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breaker.lua

@@ -138,9 +138,9 @@ local function can_break_node (pos, breakpos)
 			if node_def then
 				-- try tool first
 				local tool = get_tool (pos)
+				local dig_params = nil
 
 				if tool then
-					local dig_params = nil
 					local tool_def = minetest.registered_items[tool:get_name ()]
 
 					if tool_def then
@@ -222,6 +222,35 @@ end
 
 
 
+local function eject_item (pos, stack, eject_pos)
+	if utils.pipeworks_supported then
+		local node = utils.get_far_node (eject_pos)
+
+		if node and minetest.get_item_group (node.name, "tube") > 0 then
+			local owner = nil
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				local o = meta:get_string ("owner")
+
+				if o ~= "" then
+					owner = o
+				end
+			end
+
+			local vel = vector.subtract (eject_pos, pos)
+
+			pipeworks.tube_inject_item (pos, pos, vel, stack, owner)
+
+			return
+		end
+	end
+
+	utils.item_drop (stack, nil, eject_pos)
+end
+
+
+
 local function break_node (pos, range)
 	local node = minetest.get_node_or_nil (pos)
 
@@ -242,7 +271,7 @@ local function break_node (pos, range)
 						local eject_pos = get_breaker_side (pos, node.param2, "back")
 
 						for i = 1, #drops do
-							utils.item_drop (drops[i], nil, eject_pos)
+							eject_item (pos, drops[i], eject_pos)
 						end
 
 						add_wear (pos, wear)
@@ -324,7 +353,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local spec =
 	"formspec_version[3]\n"..
@@ -342,6 +371,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("tool", 1)
 	inv:set_width ("tool", 1)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
 
 	-- If return true no item is taken from itemstack
 	return false
@@ -350,7 +386,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -359,6 +395,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Breaker (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -577,12 +615,126 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "tool",
+			connect_sides = { left = 1, right = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("tool", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				if stack and not stack:is_empty () then
+					local def = utils.find_item_def (stack:get_name ())
+
+					if def and def.tool_capabilities then
+						local meta = minetest.get_meta (pos)
+						local inv = (meta and meta:get_inventory ()) or nil
+
+						if inv then
+							return inv:room_for_item ("tool", stack)
+						end
+					end
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("tool")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("tool", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("tool")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("tool", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("tool", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("tool", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local breaker_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	breaker_groups.tubedevice = 1
+	breaker_groups.tubedevice_receiver = 1
+end
+
+
+
+local breaker_on_groups = { cracky = 3, not_in_creative_inventory = 1 }
+if utils.pipeworks_supported then
+	breaker_on_groups.tubedevice = 1
+	breaker_on_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:breaker", {
 	description = S("Breaker"),
 	tiles = { "lwbreaker.png", "lwbreaker.png", "lwbreaker.png",
 				 "lwbreaker.png", "lwbreaker_rear.png", "lwbreaker_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (breaker_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -594,9 +746,11 @@ minetest.register_node("lwcomponents:breaker", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node,
 	on_blast = on_blast,
 	on_timer = on_timer,
@@ -611,7 +765,7 @@ minetest.register_node("lwcomponents:breaker_locked", {
 	tiles = { "lwbreaker.png", "lwbreaker.png", "lwbreaker.png",
 				 "lwbreaker.png", "lwbreaker_rear.png", "lwbreaker_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (breaker_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -623,9 +777,11 @@ minetest.register_node("lwcomponents:breaker_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node_locked,
 	on_blast = on_blast,
 	on_timer = on_timer,
@@ -641,7 +797,7 @@ minetest.register_node("lwcomponents:breaker_on", {
 	tiles = { "lwbreaker.png", "lwbreaker.png", "lwbreaker.png",
 				 "lwbreaker.png", "lwbreaker_rear.png", "lwbreaker_face_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (breaker_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -654,9 +810,11 @@ minetest.register_node("lwcomponents:breaker_on", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node,
 	on_blast = on_blast,
 	on_timer = on_timer,
@@ -671,7 +829,7 @@ minetest.register_node("lwcomponents:breaker_locked_on", {
 	tiles = { "lwbreaker.png", "lwbreaker.png", "lwbreaker.png",
 				 "lwbreaker.png", "lwbreaker_rear.png", "lwbreaker_face_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (breaker_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -684,9 +842,11 @@ minetest.register_node("lwcomponents:breaker_locked_on", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node_locked,
 	on_blast = on_blast,
 	on_timer = on_timer,

camera.lua

@@ -0,0 +1,440 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported then
+
+
+
+local function get_entity_dims (obj)
+	local dims = { -0.5, 0, -0.5, 0.5, 2, 0.5 }
+	local found = false
+
+	if obj.get_luaentity then
+		local entity = obj:get_luaentity ()
+
+		if entity and entity.name then
+			local def = minetest.registered_entities[entity.name]
+
+			if def and type (def.collisionbox) == "table" then
+
+				dims = { def.collisionbox[1] or -0.5,
+							def.collisionbox[2] or -0.5,
+							def.collisionbox[3] or -0.5,
+							def.collisionbox[4] or 0.5,
+							def.collisionbox[5] or 0.5,
+							def.collisionbox[6] or 0.5 }
+
+				found = true
+			end
+		end
+	end
+
+	if not found then
+		local props = obj:get_properties ()
+		if props and props.collisionbox and type (props.collisionbox) == "table" then
+
+			dims = { props.collisionbox[1] or -0.5,
+						props.collisionbox[2] or -0.5,
+						props.collisionbox[3] or -0.5,
+						props.collisionbox[4] or 0.5,
+						props.collisionbox[5] or 0.5,
+						props.collisionbox[6] or 0.5 }
+		end
+	end
+
+	dims[1] = math.min (dims[1], dims[3])
+	dims[3] = dims[1]
+	dims[4] = math.max (dims[4], dims[6])
+	dims[6] = dims[4]
+
+	if (dims[3] - dims[1]) < 1 then
+		dims[1] = -0.5
+		dims[3] = -0.5
+		dims[4] = 0.5
+		dims[6] = 0.5
+	end
+
+	return dims
+end
+
+
+
+local function get_entity (pos)
+	local objects = minetest.get_objects_inside_radius (pos, 2.0)
+
+	if #objects > 0 then
+		for _, obj in ipairs (objects) do
+			if obj.get_pos then
+				if obj:is_player () then
+					local epos =  vector.round (obj:get_pos ())
+
+					if epos.x == pos.x and epos.z == pos.z and
+							(epos.y == pos.y or epos.y == pos.y - 1) then
+						return 1
+					end
+				end
+
+				if not utils.is_drop (obj) then
+					local epos =  vector.new (obj:get_pos ())
+					local dims = get_entity_dims (obj)
+
+					if pos.x >= (epos.x + dims[1]) and pos.x <= (epos.x + dims[4]) and
+							pos.y >= (epos.y + dims[2]) and pos.y <= (epos.y + dims[5]) and
+							pos.z >= (epos.z + dims[3]) and pos.z <= (epos.z + dims[6]) then
+						return 2
+					end
+				end
+			end
+		end
+	end
+
+	return nil
+end
+
+
+
+local function camera_scan (pos, resolution, distance)
+	local node = utils.get_far_node (pos)
+	local image = { }
+
+	for y = 1, resolution, 1 do
+		image[y] = { }
+
+		for x = 1, resolution, 1 do
+			image[y][x] = "000000"
+		end
+	end
+
+	if node then
+		local dir = vector.multiply (minetest.facedir_to_dir (node.param2), -1)
+		local last_pos = nil
+		local last_color = "000000"
+		local view = (distance * 1.414213562) / resolution
+
+		for dist = distance, 1, -1 do
+			local scale = dist / distance
+
+			for y = 1, resolution, 1 do
+				for x = 1, resolution, 1 do
+					local horz = (x - (resolution / 2)) * scale * view
+					local vert = (y - (resolution / 2)) * scale * view
+
+					local tpos = nil
+					if dir.x ~= 0 then
+						tpos = vector.round ({ x = (dist * dir.x) + pos.x, y = pos.y - vert, z = horz + pos.z })
+					else
+						tpos = vector.round ({ x = horz + pos.x, y = pos.y - vert, z = (dist * dir.z) + pos.z })
+					end
+
+					if last_pos and vector.equals (last_pos, tpos) then
+						if last_color then
+							image[y][x] = last_color
+						end
+					else
+						local entity = get_entity (tpos)
+
+						if entity == 1 then
+							local color = (((distance - dist) / distance) * 98) + 30
+
+							last_color = string.format ("00%02X00", color)
+							image[y][x] = last_color
+						elseif entity == 2 then
+							local color = (((distance - dist) / distance) * 98) + 30
+
+							last_color = string.format ("0000%02X", color)
+							image[y][x] = last_color
+						else
+							local node = utils.get_far_node (tpos)
+
+							if node and node.name ~= "air" then
+								local color = (((distance - dist) / distance) * 98) + 30
+
+								last_color = string.format ("%02X%02X%02X", color, color, color)
+								image[y][x] = last_color
+							else
+								last_color = nil
+							end
+						end
+					end
+
+					last_pos = tpos
+				end
+			end
+		end
+	end
+
+	return image
+end
+
+
+
+local function send_scan (pos)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local channel = meta:get_string ("channel")
+
+		if channel:len () > 0 then
+			local image = camera_scan (pos,
+												tonumber (meta:get_string ("resolution")),
+												tonumber (meta:get_string ("distance")))
+
+			utils.digilines_receptor_send (pos,
+													 utils.digilines_default_rules,
+													 channel,
+													 image)
+		end
+	end
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+	local spec =
+	"formspec_version[3]"..
+	"size[8.5,5.5;true]"..
+	"field[1.0,1.0;4.0,0.8;channel;Channel;${channel}]"..
+	"button[5.5,1.0;2.0,0.8;setchannel;Set]"..
+	"field[1.0,2.5;4.0,0.8;distance;Distance;${distance}]"..
+	"button[5.5,2.5;2.0,0.8;setdistance;Set]"..
+	"field[1.0,4.0;4.0,0.8;resolution;Resolution;${resolution}]"..
+	"button[5.5,4.0;2.0,0.8;setresolution;Set]"
+
+	meta:set_string ("formspec", spec)
+	meta:set_string ("distance", "5")
+	meta:set_string ("resolution", "16")
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
+	after_place_node (pos, placer, itemstack, pointed_thing)
+
+	if placer and placer:is_player () then
+		local meta = minetest.get_meta (pos)
+
+		meta:set_string ("owner", placer:get_player_name ())
+		meta:set_string ("infotext", "Camera (owned by "..placer:get_player_name ()..")")
+	end
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function on_receive_fields (pos, formname, fields, sender)
+	if not utils.can_interact_with_node (pos, sender) then
+		return
+	end
+
+	if fields.setchannel then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			meta:set_string ("channel", fields.channel)
+		end
+	end
+
+	if fields.setdistance then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local distance = math.min (math.max (tonumber (fields.distance) or 1, 1), 16)
+			fields.distance = tostring (distance)
+
+			meta:set_string ("distance", tostring (distance))
+		end
+	end
+
+	if fields.setresolution then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local resolution = math.min (math.max (tonumber (fields.resolution) or 1, 1), 128)
+			fields.resolution = tostring (resolution)
+
+			meta:set_string ("resolution", tostring (resolution))
+		end
+	end
+end
+
+
+
+local function can_dig (pos, player)
+	if not utils.can_interact_with_node (pos, player) then
+		return false
+	end
+
+	return true
+end
+
+
+
+local function on_blast (pos, intensity)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		if intensity >= 1.0 then
+			minetest.remove_node (pos)
+
+		else -- intensity < 1.0
+			local node = minetest.get_node_or_nil (pos)
+			if node then
+				local items = minetest.get_node_drops (node, nil)
+
+				if items and #items > 0 then
+					local stack = ItemStack (items[1])
+
+					if stack then
+						preserve_metadata (pos, node, meta, { stack })
+						utils.item_drop (stack, nil, pos)
+						minetest.remove_node (pos)
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function on_rightclick (pos, node, clicker, itemstack, pointed_thing)
+	if not utils.can_interact_with_node (pos, clicker) then
+		if clicker and clicker:is_player () then
+			local owner = "<unknown>"
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				owner = meta:get_string ("owner")
+			end
+
+			local spec =
+			"formspec_version[3]"..
+			"size[8.0,4.0,false]"..
+			"label[1.0,1.0;Owned by "..minetest.formspec_escape (owner).."]"..
+			"button_exit[3.0,2.0;2.0,1.0;close;Close]"
+
+			minetest.show_formspec (clicker:get_player_name (),
+											"lwcomponents:component_privately_owned",
+											spec)
+		end
+	end
+
+	return itemstack
+end
+
+
+
+local function digilines_support ()
+	if utils.digilines_supported then
+		return
+		{
+			wire =
+			{
+				rules = utils.digilines_default_rules,
+			},
+
+			effector =
+			{
+				action = function (pos, node, channel, msg)
+					local meta = minetest.get_meta(pos)
+
+					if meta then
+						local this_channel = meta:get_string ("channel")
+
+						if this_channel ~= "" and this_channel == channel and
+							type (msg) == "string" then
+
+							local m = { }
+							for w in string.gmatch(msg, "[^%s]+") do
+								m[#m + 1] = w
+							end
+
+							if m[1] == "scan" then
+								send_scan (pos)
+
+							elseif m[1] == "distance" then
+								local distance = math.min (math.max (tonumber (m[2] or 5) or 5, 1), 16)
+								meta:set_string ("distance", tostring (distance))
+
+							elseif m[1] == "resolution" then
+								local resolution = math.min (math.max (tonumber (m[2] or 16) or 16, 1), 128)
+								meta:set_string ("resolution", tostring (resolution))
+
+							end
+						end
+					end
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+minetest.register_node("lwcomponents:camera", {
+	description = S("Camera"),
+	tiles = { "lwcamera.png", "lwcamera.png", "lwcamera.png",
+				 "lwcamera.png", "lwcamera.png", "lwcamera_lens.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:camera",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	digiline = digilines_support (),
+
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:camera_locked", {
+	description = S("Camera (locked)"),
+	tiles = { "lwcamera.png", "lwcamera.png", "lwcamera.png",
+				 "lwcamera.png", "lwcamera.png", "lwcamera_lens.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:camera_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	digiline = digilines_support (),
+
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node_locked,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick
+})
+
+
+
+end -- utils.digilines_supported
+
+
+
+--

cannon_shell.lua

@@ -0,0 +1,297 @@
+local utils = ...
+local S = utils.S
+
+
+
+--[[
+on_step info
+
+info.touching_ground = bool
+info.standing_on_object = bool
+info.collides = bool
+
+
+info.collisions[n].type = "node"
+info.collisions[n].node_pos = vector
+info.collisions[n].old_velocity = vector
+info.collisions[n].now_velocity = vector
+info.collisions[n].axis = "x" | "y" | "z" - axis hit
+
+or
+
+info.collisions[n].type = "object"
+info.collisions[n].object = userdata
+info.collisions[n].old_velocity = vector
+info.collisions[n].now_velocity = vector
+info.collisions[n].axis = "x" | "y" | "z" - axis hit
+]]
+
+
+
+local function get_adjacent_node (collision_info, spawn_pos)
+	if vector.equals (collision_info.node_pos, spawn_pos) then
+		return collision_info.node_pos
+	end
+
+	local adj = { x = 0, y = 0, z = 0 }
+
+	if collision_info.axis == "x" then
+		adj.x = (collision_info.old_velocity.x > 0 and -1) or 1
+	elseif collision_info.axis == "y" then
+		adj.y = (collision_info.old_velocity.y > 0 and -1) or 1
+	elseif collision_info.axis == "z" then
+		adj.z = (collision_info.old_velocity.z > 0 and -1) or 1
+	end
+
+	local pos = vector.new (collision_info.node_pos)
+	local node = utils.get_far_node (pos)
+	local def = minetest.registered_nodes[node and node.name or nil]
+
+	while (node and node.name ~= "air") and (def and not def.buildable_to) do
+		local next_pos = vector.add (pos, adj)
+
+		if vector.equals (next_pos, spawn_pos) then
+			return pos
+		end
+
+		pos = next_pos
+		node = utils.get_far_node (pos)
+		def = minetest.registered_nodes[node and node.name or nil]
+	end
+
+	return pos
+end
+
+
+
+local function register_shell (name, description, texture, inventory_image,
+										 stack_max, shell_speed, explode_func)
+
+	minetest.register_entity (name.."_entity", {
+		initial_properties = {
+			physical = true,
+			collide_with_objects = true,
+			collisionbox = { -0.25, -0.125, -0.25, 0.25, 0.125, 0.25 },
+			pointable = false,
+			visual_size = { x = 0.7, y = 0.7, z = 0.7 },
+			visual = "mesh",
+			mesh = "lwcomponents_shell.obj",
+			textures = { texture },
+			use_texture_alpha = false,
+			is_visible = true,
+			makes_footstep_sound = false,
+			automatic_face_movement_dir = false,
+			automatic_face_movement_max_rotation_per_sec = false,
+			automatic_rotate = 0,
+			backface_culling = true,
+			damage_texture_modifier = "",
+			glow = 0,
+			static_save = false,
+			shaded = true,
+			show_on_minimap = false,
+		},
+
+		on_activate = function (self, staticdata, dtime_s)
+			if not self.spawn_pos then
+				self.spawn_pos = vector.new (self.object:get_pos ())
+			end
+
+			if not self.time_lived then
+				self.time_lived = 0
+			end
+
+			if not self.shell_speed then
+				self.shell_speed = shell_speed
+			end
+
+			self.staticdata = staticdata
+		end,
+
+		get_staticdata = function (self)
+			return self.staticdata
+		end,
+
+		on_step = function (self, dtime, info)
+			local explode_pos = nil
+
+			self.object:set_rotation (vector.dir_to_rotation (self.object:get_velocity ()))
+
+			if self.time_lived then
+				self.time_lived = self.time_lived + dtime
+
+				if self.time_lived > self.shell_speed then
+					self.object:remove ()
+
+					return
+				end
+			end
+
+			if info.collides then
+				--For each collision that was found in reverse order
+				for i = #info.collisions, 1, -1 do
+					local c = info.collisions[i]
+
+					if c.type == "node" then
+						local node = utils.get_far_node (c.node_pos)
+
+						if node and node.name ~= "air" then
+							local def = minetest.registered_nodes[node.name]
+
+							if def and def.walkable then
+								-- adjacent for explosion
+								explode_pos = get_adjacent_node (c, self.spawn_pos)
+
+--minetest.log ("action", "Shell on node "..node.name.." at "..minetest.pos_to_string (explode_pos)..
+							--" node at "..minetest.pos_to_string (c.node_pos))
+
+								break
+							end
+						end
+
+						if not explode_pos then
+							self.object:set_velocity (c.old_velocity)
+						end
+
+					elseif c.type == "object" then
+						local c_name = (c.object.get_luaentity and
+											 c.object:get_luaentity () and
+											 c.object:get_luaentity ().name) or ""
+						local s_name = (self.name) or ""
+
+						-- explode at this pos
+						if c.object:get_armor_groups ().immortal or s_name == c_name then
+							self.object:set_velocity (c.old_velocity)
+						else
+							explode_pos = vector.new (c.object:get_pos ())
+
+--minetest.log ("action", "Shell on entity "..c.object:get_luaentity ().name.." at "..minetest.pos_to_string (explode_pos))
+
+							break
+						end
+					end
+				end
+			end
+
+			if explode_pos then
+				self.object:remove ()
+
+				explode_func (explode_pos)
+			end
+		end,
+
+		on_punch = function (self, puncher, time_from_last_punch, tool_capabilities, dir)
+			return true
+		end,
+	})
+
+	minetest.register_craftitem (name, {
+		description = description,
+		short_description = description,
+		groups = { },
+		inventory_image = inventory_image,
+		wield_image = inventory_image,
+		stack_max = stack_max,
+	})
+
+
+	lwcomponents.register_spawner (name,
+	function (spawn_pos, itemstack, owner, spawner_pos, spawner_dir, force)
+		if not itemstack:is_empty() then
+			local def = minetest.registered_entities[name.."_entity"]
+
+			if def then
+				local obj = minetest.add_entity (spawn_pos, name.."_entity")
+
+				if obj then
+					obj:set_acceleration ({ x = 0, y = -9.81, z = 0 })
+					obj:set_rotation (vector.dir_to_rotation (vector.multiply (spawner_dir, shell_speed)))
+					obj:set_velocity (vector.multiply (spawner_dir, shell_speed))
+
+					local luaent = obj:get_luaentity ()
+
+					if luaent then
+						luaent.spawn_pos = { x = spawn_pos.x, y = spawn_pos.y, z = spawn_pos.z }
+						luaent.time_lived = 0
+						luaent.shell_speed = shell_speed
+					end
+
+					return obj, false
+				end
+			end
+		end
+
+		return nil, false
+	end)
+end
+
+
+register_shell ("lwcomponents:cannon_shell",
+	S("Shell"),
+	"lwcannon_shell.png",
+	"lwcannon_shell_item.png",
+	99,
+	25,
+	function (pos)
+		utils.boom (pos,
+						2, -- node_radius
+						70, -- node_chance in 100
+						2, -- fire_radius
+						5, -- fire_chance in 100
+						4, -- entity_radius
+						20, -- entity_damage
+						false, -- disable_drops
+						nil, -- node_filter
+						false, -- burn_all
+						nil) -- sound
+	end)
+
+
+register_shell ("lwcomponents:cannon_soft_shell",
+	S("Soft Shell"),
+	"lwcannon_soft_shell.png",
+	"lwcannon_soft_shell_item.png",
+	99,
+	25,
+	function (pos)
+		utils.boom (pos,
+						 2, -- node_radius
+						 50, -- node_chance in 100
+						 2, -- fire_radius
+						 5, -- fire_chance in 100
+						 4, -- entity_radius
+						 20, -- entity_damage
+						 false, -- disable_drops
+						 {
+							 buildable_to = true,
+							 buildable_to_undefined = false,
+						 }, -- node_filter
+						 false, -- burn_all
+						 nil) -- sound
+	end)
+
+
+if minetest.global_exists ("fire") then
+register_shell ("lwcomponents:cannon_fire_shell",
+	S("Fire Shell"),
+	"lwcannon_fire_shell.png",
+	"lwcannon_fire_shell_item.png",
+	99,
+	25,
+	function (pos)
+		utils.boom (pos,
+						2, -- node_radius
+						0, -- node_chance in 100
+						2, -- fire_radius
+						70, -- fire_chance in 100
+						4, -- entity_radius
+						20, -- entity_damage
+						false, -- disable_drops
+						nil, -- node_filter
+						true, -- burn_all
+						nil) -- sound
+	end)
+end
+
+
+
+--

change.log

@@ -53,8 +53,111 @@ v0.1.8
 *	Made changes to lwcomponents.register_spawner api - called function
 	must now set velocity, can use force parameter.
 *	Removed spawning from this mod. Created lwcomponents_spawners to
-	register spawers.
+	register spawners.
 
 
 v0.1.9
 *	Fixed infotext on various nodes.
+
+
+v0.1.10
+*	Added cannons.
+
+
+v0.1.11
+*	Fix to breakers (?).
+*	Added position aiming to cannons.
+
+
+v0.1.12
+*	Added sensitivity option for game controller in cannons.
+*	Added cannon shells.
+*	Fixed bug in utils.is_creative.
+*	Increased cannon pitch to -20 to 70.
+
+
+v0.1.13
+*	Removed optional dependency lwdrops.
+
+
+v0.1.14
+*	Calls on_drop when item is dropped.
+
+
+v0.1.15
+*	Fixed bug call to clear_map in fan on_blast.
+*	Added pistons.
+
+
+v0.1.16
+*	Fixed piston interaction with non-walkable nodes.
+
+
+v0.1.17
+*	Fixed unintended global variable in pistons.lua.
+
+
+v0.1.18
+*	Added mesecons through wire.
+
+
+v0.1.19
+*	Added camera.
+
+
+v0.1.20
+*	Valid distance and resolution for camera set by digilines message.
+*	Imposed maximum resolution of 128 for cameras.
+
+
+v0.1.21
+*	Minor bug fix, movefloor global.
+*	Fixed movefloor so player doesn't fall through floor.
+*	Transfer timer in moved nodes for pistons.
+
+
+v0.1.22
+*	Added storage.
+
+
+v0.1.23
+*	Fixed storage indexer not taking items from storage properly.
+*	Added pipeworks support for:
+		Storage Indexer
+		Dropper
+		Collector
+		Dispenser
+		Breaker
+		Deployer
+		Cannon
+		Conduit
+*	Conduits now work in unloaded blocks.
+*	Fixed conduits sending items in groups.
+*	Fixed player attached to controller moving forever when they get blown up.
+*	Fixed pistons being powered from the pusher side.
+
+
+v0.1.24
+*	Limited requested count from storage indexer from digilines message to max stack.
+*	Fixed receptor state in detector.
+*	Fixed receptor state in digiswitch.
+*	Fixed bug in utils.is_same_item ().
+*	Added force field generators.
+*	Removed immortal from cannon shells (shells test for same type of shell and ignore).
+
+
+v0.1.25
+*	Added hoppers.
+*	Added "inventory" message to conduits.
+*	Removed digilines or mesecons requirement for conduits.
+*	Improved unescaping item description.
+*	Fixed custom item output from storage.
+*	Added filtering to conduit forms.
+
+
+v0.1.26
+*	Added support for stickblocks to pistons.
+*	Changed description of hoppers to avoid confusion.
+*	Added destroyer.
+*	Cleaned up hopper code.
+*	Fixed recipe for solid conductor blocks.

collector.lua

@@ -148,7 +148,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local is_off = itemstack and (itemstack:get_name () == "lwcomponents:collector" or
 											itemstack:get_name () == "lwcomponents:collector_locked")
@@ -162,6 +162,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	inv:set_width ("main", 4)
 	inv:set_size ("filter", 8)
 	inv:set_width ("filter", 2)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
 
 	-- If return true no item is taken from itemstack
 	return false
@@ -170,7 +177,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -179,6 +186,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Collector (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -427,12 +436,120 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "main",
+			connect_sides = { left = 1, right = 1, front = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("main", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("main", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("main", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("main", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local collector_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	collector_groups.tubedevice = 1
+	collector_groups.tubedevice_receiver = 1
+end
+
+
+
+local collector_on_groups = { cracky = 3, not_in_creative_inventory = 1 }
+if utils.pipeworks_supported then
+	collector_on_groups.tubedevice = 1
+	collector_on_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:collector", {
 	description = S("Collector"),
 	tiles = { "lwcollector.png", "lwcollector.png", "lwcollector.png",
 				 "lwcollector.png", "lwcollector.png", "lwcollector.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (collector_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -441,11 +558,13 @@ minetest.register_node("lwcomponents:collector", {
 	_digistuff_channelcopier_fieldname = "channel",
 
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick
@@ -458,7 +577,7 @@ minetest.register_node("lwcomponents:collector_locked", {
 	tiles = { "lwcollector.png", "lwcollector.png", "lwcollector.png",
 				 "lwcollector.png", "lwcollector.png", "lwcollector.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (collector_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -467,11 +586,13 @@ minetest.register_node("lwcomponents:collector_locked", {
 	_digistuff_channelcopier_fieldname = "channel",
 
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick
@@ -484,7 +605,7 @@ minetest.register_node("lwcomponents:collector_on", {
 	tiles = { "lwcollector_on.png", "lwcollector_on.png", "lwcollector_on.png",
 				 "lwcollector_on.png", "lwcollector_on.png", "lwcollector_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (collector_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -493,11 +614,13 @@ minetest.register_node("lwcomponents:collector_on", {
 	_digistuff_channelcopier_fieldname = "channel",
 
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick
@@ -510,7 +633,7 @@ minetest.register_node("lwcomponents:collector_locked_on", {
 	tiles = { "lwcollector_on.png", "lwcollector_on.png", "lwcollector_on.png",
 				 "lwcollector_on.png", "lwcollector_on.png", "lwcollector_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (collector_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -519,11 +642,13 @@ minetest.register_node("lwcomponents:collector_locked_on", {
 	_digistuff_channelcopier_fieldname = "channel",
 
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick

conduit.lua

@@ -3,15 +3,15 @@ local S = utils.S
 
 
 
-if utils.digilines_supported or utils.mesecon_supported then
-
-
-
 local transfer_rate = 0.1
 local conduit_interval = 1.0
 local conduit_connections = utils.connections:new (mod_storage, "conduit_connections")
 
 
+-- forward declare
+local run_initialize = nil
+
+
 
 local function get_target_list (pos)
 	local tlist = conduit_connections:get_connected_ids (pos)
@@ -51,6 +51,34 @@ end
 
 
 
+local function get_target_for_item (meta, inv, stack)
+	if meta then
+		if inv then
+			local slots = inv:get_size ("filter")
+
+			for slot = 1, slots, 1 do
+				local s = inv:get_stack ("filter", slot)
+
+				if s and not s:is_empty () and utils.is_same_item (s, stack) then
+					local target = meta:get_string ("target"..slot)
+
+					if target ~= "" then
+						return target
+					end
+				end
+			end
+		end
+
+		if meta:get_string ("target") ~= "" then
+			return meta:get_string ("target")
+		end
+	end
+
+	return nil
+end
+
+
+
 local function deliver_slot (pos, slot)
 	local meta = minetest.get_meta (pos)
 
@@ -62,6 +90,10 @@ local function deliver_slot (pos, slot)
 			local item = inv:get_stack ("transfer", slot)
 
 			if transfer_data[slot] and item and not item:is_empty () then
+				local tnode = utils.get_far_node (transfer_data[slot].pos)
+
+				if tnode and (tnode.name == "lwcomponents:conduit" or
+								  tnode.name == "lwcomponents:conduit_locked") then
 					local tmeta = minetest.get_meta (transfer_data[slot].pos)
 
 					if tmeta then
@@ -69,8 +101,7 @@ local function deliver_slot (pos, slot)
 
 						if tinv then
 							tinv:add_item ("main", item)
-
-						--send_conduit_message (pos, target, slot)
+						end
 					end
 				end
 			end
@@ -138,7 +169,7 @@ end
 
 
 
-local function delivered_earliest (pos)
+local function deliver_earliest (pos)
 	local meta = minetest.get_meta (pos)
 
 	if meta then
@@ -194,7 +225,8 @@ local function add_to_send_list (pos, item, destpos, distance)
 	local slot = get_transfer_free_slot (pos)
 
 	while slot < 1 do
-		delivered_earliest (pos)
+		deliver_earliest (pos)
+		slot = get_transfer_free_slot (pos)
 	end
 
 	local meta = minetest.get_meta (pos)
@@ -210,15 +242,11 @@ local function add_to_send_list (pos, item, destpos, distance)
 				due = minetest.get_us_time () + (transfer_rate * 1000000 * distance)
 			}
 
-			inv:add_item ("transfer", item)
+			inv:set_stack ("transfer", slot, item)
 
 			meta:set_string ("transfer_data", minetest.serialize (transfer_data))
 
-			local timer = minetest.get_node_timer (pos)
-
-			if not timer:is_started () then
-				timer:start (conduit_interval)
-			end
+			run_initialize (pos)
 		end
 	end
 end
@@ -231,9 +259,7 @@ local function send_to_target (pos, target, slot)
 	if meta then
 		local inv = meta:get_inventory ()
 
-		target = (target and tostring (target)) or meta:get_string ("target")
-
-		if inv and target:len () > 0 then
+		if inv then
 			if not slot then
 				local slots = inv:get_size ("main")
 
@@ -241,10 +267,12 @@ local function send_to_target (pos, target, slot)
 					local stack = inv:get_stack ("main", i)
 
 					if not stack:is_empty () and stack:get_count () > 0 then
+						if target or get_target_for_item (meta, inv, stack) then
 							slot = i
 							break
 						end
 					end
+				end
 
 			elseif type (slot) == "string" then
 				local name = slot
@@ -271,11 +299,14 @@ local function send_to_target (pos, target, slot)
 			if slot then
 				local stack = inv:get_stack ("main", slot)
 
-				if not stack:is_empty () and stack:get_count () > 0 then
+				if stack and not stack:is_empty () then
 					local name = stack:get_name ()
 					local item = ItemStack (stack)
 
-					if item then
+					target = (target and tostring (target)) or
+								get_target_for_item (meta, inv, stack)
+
+					if item and target then
 						item:set_count (1)
 
 						local tpos, distance = conduit_connections:is_connected (pos, target)
@@ -292,8 +323,6 @@ local function send_to_target (pos, target, slot)
 									stack:set_count (stack:get_count () - 1)
 									inv:set_stack ("main", slot, stack)
 
-									--send_conduit_message (pos, target, slot)
-
 									return true, target, slot
 								end
 							end
@@ -309,42 +338,173 @@ end
 
 
 
-local function run_conduit (pos)
-	local meta = minetest.get_meta (pos)
-	local automatic = false
-
-	if meta then
-		automatic = meta:get_string ("automatic") == "true"
-	end
-
-	if automatic then
-		send_to_target (pos)
-	end
-
-	return run_deliveries (pos) or automatic
-end
-
-
-
 local function get_formspec (pos)
 	local meta = minetest.get_meta (pos)
 	local automatic = "false"
+	local filters = ""
 
 	if meta then
 		automatic = meta:get_string ("automatic")
 	end
 
+	for i = 1, 8, 1 do
+		filters = string.format ("%sfield[12.7,%0.2f;3.0,0.8;target%d;;${target%d}]"..
+										 "button[15.9,%0.2f;1.5,0.8;settarget%d;Set]",
+										 filters,
+										 (i * 1.25) + 0.35,
+										 i,
+										 i,
+										 (i * 1.25) + 0.35,
+										 i)
+	end
+
 	return
-		"formspec_version[3]\n"..
-		"size[11.75,12.25;true]\n"..
-		"field[1.0,1.5;3.0,0.8;channel;Channel;${channel}]\n"..
-		"button[4.2,1.5;1.5,0.8;setchannel;Set]\n"..
-		"field[1.0,3.0;3.0,0.8;target;Target;${target}]\n"..
-		"button[4.2,3.0;1.5,0.8;settarget;Set]\n"..
-		"checkbox[1.0,4.5;automatic;Automatic;"..automatic.."]\n"..
-		"list[context;main;6.0,1.0;4,4;]\n"..
-		"list[current_player;main;1.0,6.5;8,4;]\n"..
-		"listring[]"
+		"formspec_version[3]"..
+		"size[18.4,12.25;true]"..
+		"field[1.0,1.5;3.0,0.8;channel;Channel;${channel}]"..
+		"button[4.2,1.5;1.5,0.8;setchannel;Set]"..
+		"field[1.0,3.0;3.0,0.8;target;Target;${target}]"..
+		"button[4.2,3.0;1.5,0.8;settarget;Set]"..
+		"checkbox[1.0,4.5;automatic;Automatic;"..automatic.."]"..
+		"list[context;main;6.0,1.0;4,4;]"..
+		"list[current_player;main;1.0,6.5;8,4;]"..
+		"listring[]"..
+		"label[11.5,1.25;Filter]"..
+		"list[context;filter;11.5,1.5;1,8;]"..
+		filters
+end
+
+
+
+local function run_conduit (pos, id)
+	local node = utils.get_far_node (pos)
+
+	if node then
+		if node.name == "lwcomponents:conduit" or
+				node.name == "lwcomponents:conduit_locked" then
+			local meta = minetest.get_meta (pos)
+
+			if meta and id == meta:get_int ("conduit_id") then
+				local automatic = meta:get_string ("automatic") == "true"
+
+				if automatic then
+					send_to_target (pos)
+				end
+
+				if run_deliveries (pos) or automatic then
+					minetest.after (conduit_interval, run_conduit, pos, id)
+				else
+					meta:set_int ("run_active", 0)
+				end
+			end
+		else
+			conduit_connections:remove_node (pos)
+		end
+	end
+end
+
+
+
+run_initialize = function (pos)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		if meta:get_int ("run_active") == 0 then
+			meta:set_int ("run_active", 1)
+			minetest.after (conduit_interval, run_conduit, pos, meta:get_int ("conduit_id"))
+		end
+	end
+end
+
+
+
+local function count_table_keys (t)
+	local count = 0
+
+	for k, v in pairs (t) do
+		count = count + 1
+	end
+
+	return count
+end
+
+
+
+local function send_inventory_message (pos)
+	if utils.digilines_supported then
+		local meta = minetest.get_meta (pos)
+		local inv = (meta and meta:get_inventory ()) or nil
+
+		if meta and inv then
+			local channel = meta:get_string ("channel")
+
+			if channel:len () > 0 then
+				local inventory = { }
+				local slots = inv:get_size ("main")
+
+				for slot = 1, slots, 1 do
+					local stack = inv:get_stack ("main", slot)
+
+					if stack and not stack:is_empty () then
+						local name = stack:get_name ()
+						local description = nil
+						local custom = false
+						local pallet_index = nil
+						local tstack = stack:to_table ()
+
+						if tstack and tstack.meta and count_table_keys (tstack.meta) > 0 then
+							custom = true
+
+							pallet_index = tstack.meta.palette_index
+						end
+
+						if stack:get_short_description () ~= "" then
+							description = stack:get_short_description ()
+						elseif stack:get_description () ~= "" then
+							description = stack:get_description ()
+						else
+							description = name
+
+							local def = utils.find_item_def (name)
+
+							if def then
+								if def.short_description then
+									description = def.short_description
+								elseif def.description then
+									description = def.description
+								end
+							end
+						end
+
+						inventory[slot] =
+						{
+							name = stack:get_name (),
+							description = utils.unescape_description (description),
+							count = stack:get_count (),
+							custom = custom,
+							pallet_index = pallet_index,
+						}
+					else
+						inventory[slot] =
+						{
+							name = "",
+							description = "",
+							count = 0,
+							custom = false,
+							pallet_index = nil,
+						}
+					end
+				end
+
+				utils.digilines_receptor_send (pos,
+														 utils.digilines_default_rules,
+														 channel,
+														 { action = "inventory",
+															inventory = inventory })
+			end
+		end
+	end
+
 end
 
 
@@ -362,7 +522,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local spec =
 	"formspec_version[3]"..
@@ -370,10 +530,11 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	"field[0.5,1.0;6.0,0.8;channel;Channel;${channel}]"..
 	"button[2.0,2.3;3.0,0.8;setchannel;Set]"
 
-	meta:set_string ("inventory", "{ main = { }, transfer = { } }")
+	meta:set_string ("inventory", "{ main = { }, transfer = { }, filter = { } }")
 	meta:set_string ("formspec", spec)
 	meta:set_string ("transfer_data", minetest.serialize({ }))
 	meta:set_string ("automatic", "false")
+	meta:set_int ("conduit_id", math.random (1000000))
 
 	local inv = meta:get_inventory ()
 
@@ -383,6 +544,16 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	inv:set_size ("transfer", 32)
 	inv:set_width ("transfer", 8)
 
+	inv:set_size ("filter", 8)
+	inv:set_width ("filter", 1)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -390,7 +561,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -399,6 +570,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Conduit (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -492,10 +665,22 @@ local function on_receive_fields (pos, formname, fields, sender)
 			meta:set_string ("automatic", fields.automatic)
 			meta:set_string ("formspec", get_formspec (pos))
 
-			local timer = minetest.get_node_timer (pos)
+			if fields.automatic == "true" then
+				meta:set_int ("run_active", 0)
+			end
 
-			if not timer:is_started () then
-				timer:start (conduit_interval)
+			run_initialize (pos)
+		end
+	end
+
+	for i = 1, 8, 1 do
+		if fields[string.format ("settarget%d", i)] then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				local name = string.format ("target%d", i)
+
+				meta:set_string (name, fields[name])
 			end
 		end
 	end
@@ -592,8 +777,83 @@ end
 
 
 
-local function on_timer (pos, elapsed)
-	return run_conduit (pos)
+local function allow_metadata_inventory_put (pos, listname, index, stack, player)
+	if listname == "filter" then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local inv = meta:get_inventory ()
+
+			if inv then
+				inv:set_stack ("filter", index, ItemStack (stack:get_name ()))
+			end
+		end
+
+		return 0
+	end
+
+	return stack:get_stack_max ()
+end
+
+
+
+local function allow_metadata_inventory_take (pos, listname, index, stack, player)
+	if listname == "filter" then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local inv = meta:get_inventory ()
+
+			if inv then
+				inv:set_stack ("filter", index, nil)
+			end
+		end
+
+		return 0
+	end
+
+	return stack:get_stack_max ()
+end
+
+
+
+local function allow_metadata_inventory_move (pos, from_list, from_index,
+															 to_list, to_index, count, player)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local inv = meta:get_inventory ()
+
+		if inv then
+			if from_list == "filter" then
+				if to_list == "filter" then
+					return 1
+				end
+
+				inv:set_stack ("filter", from_index, nil)
+
+				return 0
+
+			elseif to_list == "filter" then
+				local stack = inv:get_stack (from_list, from_index)
+
+				if stack and not stack:is_empty () then
+					inv:set_stack ("filter", to_index, ItemStack (stack:get_name ()))
+				end
+
+				return 0
+
+			else
+				local stack = inv:get_stack (from_list, from_index)
+
+				if stack and not stack:is_empty () then
+					return stack:get_stack_max ()
+				end
+			end
+		end
+	end
+
+	return utils.settings.default_stack_max
 end
 
 
@@ -631,6 +891,9 @@ local function digilines_support ()
 								elseif m[1] == "transfer" then
 									send_to_target (pos)
 
+								elseif m[1] == "inventory" then
+									send_inventory_message (pos)
+
 								end
 
 							elseif type (msg) == "table" then
@@ -671,14 +934,150 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "main",
+			connect_sides = { left = 1, right = 1, front = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("main", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("main", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("main", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("main", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local conduit_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	conduit_groups.tubedevice = 1
+	conduit_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:conduit", {
 	description = S("Conduit"),
-	drawtype = "glasslike_framed",
-	tiles = { "lwconduit_edge.png", "lwconduit.png" },
+	tiles = { "lwconduit.png" },
+	drawtype = "nodebox",
+	node_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	connect_sides = { "top", "bottom", "front", "back", "left", "right" },
+	connects_to = { "lwcomponents:conduit", "lwcomponents:conduit_locked",
+						 "lwcomponents:hopper", "lwcomponents:hopper_horz",
+						 "hopper:hopper", "hopper:hopper_side",
+						 "group:tube", "pipeworks:filter", "pipeworks:mese_filter",
+						 "pipeworks:digiline_filter" },
+	selection_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	collision_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "none",
+	paramtype = "light",
 	param1 = 0,
 	paramtype2 = "none",
 	param2 = 0,
@@ -687,27 +1086,68 @@ minetest.register_node("lwcomponents:conduit", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_construct = on_construct,
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
-	on_timer = on_timer,
-	on_rightclick = on_rightclick
+	on_rightclick = on_rightclick,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	allow_metadata_inventory_move = allow_metadata_inventory_move
+
 })
 
 
 
 minetest.register_node("lwcomponents:conduit_locked", {
 	description = S("Conduit (locked)"),
-	drawtype = "glasslike_framed",
-	tiles = { "lwconduit_edge.png", "lwconduit.png" },
+	tiles = { "lwconduit.png" },
+	drawtype = "nodebox",
+	node_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	connect_sides = { "top", "bottom", "front", "back", "left", "right" },
+	connects_to = { "lwcomponents:conduit", "lwcomponents:conduit_locked",
+						 "lwcomponents:hopper", "lwcomponents:hopper_horz",
+						 "hopper:hopper", "hopper:hopper_side",
+						 "group:tube", "pipeworks:filter", "pipeworks:mese_filter",
+						 "pipeworks:digiline_filter" },
+	selection_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	collision_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "none",
+	paramtype = "light",
 	param1 = 0,
 	paramtype2 = "none",
 	param2 = 0,
@@ -716,15 +1156,19 @@ minetest.register_node("lwcomponents:conduit_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_construct = on_construct,
 	on_destruct = on_destruct,
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
-	on_timer = on_timer,
-	on_rightclick = on_rightclick
+	on_rightclick = on_rightclick,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	allow_metadata_inventory_move = allow_metadata_inventory_move
 })
 
 
@@ -745,4 +1189,79 @@ utils.hopper_add_container({
 
 
 
-end -- utils.digilines_supported or utils.mesecon_supported
+-- legacy code v0.1.23 (24-2-22)
+local function convert_conduits ()
+	local list = conduit_connections:get_full_list ()
+
+	for _, data in ipairs (list) do
+		local node = utils.get_far_node (data.pos)
+
+		if node and (node.name == "lwcomponents:conduit" or
+						 node.name == "lwcomponents:conduit_locked") then
+			local meta = minetest.get_meta (data.pos)
+
+			if meta then
+				if meta:get_int ("conduit_id") == 0 then
+					meta:set_int ("conduit_id", math.random (1000000))
+
+					if meta:get_string ("automatic") == "true" then
+						meta:set_int ("run_active", 1)
+					else
+						local inv = meta:get_inventory ()
+
+						if inv and not inv:is_empty ("transfer") then
+							meta:set_int ("run_active", 1)
+						end
+					end
+				end
+
+				-- added v0.1.25 (2-3-22)
+				local tmeta = meta:to_table ()
+
+				if tmeta and tmeta.inventory then
+					if not tmeta.inventory.filter then
+						tmeta.inventory.filter =
+						{
+							[1] = "", [2] = "", [3] = "", [4] = "",
+							[5] = "", [6] = "", [7] = "", [8] = ""
+						}
+
+						meta:from_table (tmeta)
+
+						if meta:get_string ("channel") ~= "" then
+							meta:set_string ("formspec", get_formspec (data.pos))
+						end
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function restart_conduits ()
+	convert_conduits ()
+
+	local list = conduit_connections:get_id_list ()
+
+	for _, data in ipairs (list) do
+		local meta = minetest.get_meta (data.pos)
+
+		if meta and meta:get_int ("run_active") ~= 0 then
+			minetest.after (conduit_interval + (math.random (10) / 10),
+								 run_conduit, data.pos, meta:get_int ("conduit_id"))
+		end
+	end
+
+end
+
+
+
+minetest.register_on_mods_loaded (function ()
+	minetest.after (3.0, restart_conduits)
+end)
+
+
+
+--

connections.lua

@@ -293,6 +293,40 @@ end
 
 
 
+function connections:get_id_list ()
+	local list = { }
+
+	for spos, data in pairs (self.connector_list) do
+		if data.id then
+			list[#list + 1] =
+			{
+				pos = minetest.string_to_pos (spos),
+				id = data.id
+			}
+		end
+	end
+
+	return list
+end
+
+
+
+function connections:get_full_list ()
+	local list = { }
+
+	for spos, data in pairs (self.connector_list) do
+		list[#list + 1] =
+		{
+			pos = minetest.string_to_pos (spos),
+			id = data.id
+		}
+	end
+
+	return list
+end
+
+
+
 return connections
 
 

crafting.lua

@@ -3,6 +3,172 @@ local S = utils.S
 
 
 
+minetest.register_craft( {
+	output = "lwcomponents:cannon",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+		{ "default:chest", "default:wood", "" },
+		{ "default:copper_ingot", "default:stone", "" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:cannon_locked",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+		{ "default:chest_locked", "default:wood", "" },
+		{ "default:copper_ingot", "default:stone", "" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:storage_unit 2",
+	recipe = {
+		{ "default:steel_ingot", "group:wood", "group:wood" },
+		{ "group:wood", "", "group:wood" },
+		{ "group:wood", "group:wood", "default:chest" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:storage_unit_locked 2",
+	recipe = {
+		{ "default:steel_ingot", "group:wood", "group:wood" },
+		{ "group:wood", "", "group:wood" },
+		{ "group:wood", "group:wood", "default:chest_locked" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:storage_indexer",
+	recipe = {
+		{ "default:steel_ingot", "group:wood" },
+		{ "group:wood", "default:chest" }
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:storage_indexer_locked",
+	recipe = {
+		{ "default:steel_ingot", "group:wood" },
+		{ "group:wood", "default:chest_locked" }
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:force_field",
+	recipe = {
+		{ "default:steel_ingot", "default:mese_crystal", "group:wood" },
+		{ "default:mese_crystal", "default:diamondblock", "default:mese_crystal" },
+		{ "default:stone", "default:mese_crystal", "default:chest" }
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:force_field_locked",
+	recipe = {
+		{ "default:steel_ingot", "default:mese_crystal", "group:wood" },
+		{ "default:mese_crystal", "default:diamondblock", "default:mese_crystal" },
+		{ "default:stone", "default:mese_crystal", "default:chest_locked" }
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:conduit 5",
+	recipe = {
+		{ "default:stone", "", "default:stone" },
+		{ "", "default:chest", "" },
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:conduit_locked 5",
+	recipe = {
+		{ "default:stone", "", "default:stone" },
+		{ "", "default:chest_locked", "" },
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:destroyer",
+	recipe = {
+		{ "default:stone", "", "group:wood" },
+		{ "", "default:steel_ingot", "" },
+		{ "group:wood", "", "default:stone" }
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:cannon_shell 10",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot" },
+		{ "", "default:coalblock" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:cannon_soft_shell 10",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot" },
+		{ "default:copper_lump", "default:coalblock" },
+	},
+})
+
+
+if minetest.global_exists ("fire") then
+
+minetest.register_craft( {
+	output = "lwcomponents:cannon_fire_shell 10",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot" },
+		{ "default:iron_lump", "default:coalblock" },
+	},
+})
+
+end -- minetest.global_exists ("fire")
+
+
+
+if utils.mesecon_supported then
+
+minetest.register_craft( {
+	output = "lwcomponents:through_wire_off 2",
+	recipe = {
+		{ "", "mesecons:wire_00000000_off" },
+		{ "mesecons:wire_00000000_off", "" },
+	},
+})
+
+end -- utils.mesecon_supported
+
+
+if utils.hopper_supported then
+
+minetest.register_craft( {
+	output = "lwcomponents:hopper",
+	recipe = {
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+		{ "", "default:stone", "" },
+	},
+})
+
+end
+
+
 if utils.digilines_supported or utils.mesecon_supported then
 
 minetest.register_craft( {
@@ -149,25 +315,25 @@ minetest.register_craft( {
 })
 
 
-minetest.register_craft( {
-	output = "lwcomponents:conduit 5",
+minetest.register_craft({
+	output = "lwcomponents:piston 2",
 	recipe = {
-		{ "default:stone", "", "default:stone" },
-		{ "", "default:chest", "" },
-		{ "default:stone", "default:steel_ingot", "default:stone" },
-	},
+		{ "group:wood", "group:wood", "group:wood" },
+		{ "default:cobble", "default:steel_ingot", "default:cobble" },
+		{ "default:stone", "default:copper_ingot", "default:stone" },
+	}
 })
 
 
-minetest.register_craft( {
-	output = "lwcomponents:conduit_locked 5",
+minetest.register_craft({
+	output = "lwcomponents:piston_sticky",
 	recipe = {
-		{ "default:stone", "", "default:stone" },
-		{ "", "default:chest_locked", "" },
-		{ "default:stone", "default:steel_ingot", "default:stone" },
-	},
+		{"group:sapling"},
+		{"lwcomponents:piston"},
+	}
 })
 
+
 end -- utils.digilines_supported or utils.mesecon_supported
 
 
@@ -211,6 +377,24 @@ minetest.register_craft( {
 	},
 })
 
+
+minetest.register_craft( {
+	output = "lwcomponents:camera",
+	recipe = {
+		{ "default:copper_ingot", "default:iron_lump" },
+		{ "default:chest", "default:stone" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:camera_locked",
+	recipe = {
+		{ "default:copper_ingot", "default:iron_lump" },
+		{ "default:chest_locked", "default:stone" },
+	},
+})
+
 end -- utils.digilines_supported
 
 
@@ -230,7 +414,7 @@ end -- utils.digilines_supported and utils.digistuff_supported
 
 
 
-if utils.mesecon_supported and mesecon.mvps_push then
+if utils.mesecon_supported then
 
 minetest.register_craft ({
    output = "lwcomponents:movefloor",
@@ -241,7 +425,7 @@ minetest.register_craft ({
    }
 })
 
-end -- utils.mesecon_supported and mesecon.mvps_push
+end -- utils.mesecon_supported
 
 
 
@@ -263,7 +447,7 @@ end -- utils.digilines_supported and utils.mesecon_supported
 if utils.unifieddyes_supported and utils.mesecon_supported then
 
 minetest.register_craft ({
-	output = "lwcomputers:solid_conductor_off 3",
+	output = "lwcomponents:solid_conductor_off 3",
 	recipe = {
 		{ "default:mese_crystal_fragment", "group:wood", ""},
 		{ "group:wood", "group:wood", "dye:white" },
@@ -272,7 +456,7 @@ minetest.register_craft ({
 
 
 minetest.register_craft ({
-	output = "lwcomputers:solid_horizontal_conductor_off 3",
+	output = "lwcomponents:solid_horizontal_conductor_off 3",
 	recipe = {
 		{ "group:wood", "group:wood", ""},
 		{ "default:mese_crystal_fragment", "group:wood", "dye:white" },

depends.txt

@@ -1,8 +1,8 @@
 default
-lwdrops?
 mesecons?
 digilines?
 unifieddyes?
 intllib?
 hopper?
 digistuff?
+pipeworks?

deployer.lua

@@ -73,7 +73,7 @@ end
 
 
 
-local function place_node (itemname, pos)
+local function place_node (item, pos)
 	local node = minetest.get_node_or_nil ({ x = pos.x, y = pos.y - 1, z = pos.z })
 
 	if not node then
@@ -100,8 +100,8 @@ local function place_node (itemname, pos)
 		end
 	end
 
-	local stack = ItemStack (itemname)
-	local itemdef = utils.find_item_def (itemname)
+	local stack = ItemStack (item)
+	local itemdef = utils.find_item_def (stack:get_name ())
 
 	if stack and itemdef then
 		local placed = false
@@ -122,23 +122,23 @@ local function place_node (itemname, pos)
 		end
 
 		if itemdef and itemdef.on_place then
-			local result, msg = pcall (itemdef.on_place, stack, nil, pointed_thing)
+			local result, leftover = pcall (itemdef.on_place, stack, nil, pointed_thing)
 
 			placed = result
 
 			if not placed then
 				if utils.settings.alert_handler_errors then
-					minetest.log ("error", "on_place handler for "..itemname.." crashed - "..msg)
+					minetest.log ("error", "on_place handler for "..stack:get_name ().." crashed - "..leftover)
 				end
 			end
 		end
 
 		if not placed then
-			if not minetest.registered_nodes[itemname] then
+			if not minetest.registered_nodes[stack:get_name ()] then
 				return false
 			end
 
-			minetest.set_node (pos, { name = itemname, param1 = 0, param2 = 0 })
+			minetest.set_node (pos, { name = stack:get_name (), param1 = 0, param2 = 0 })
 
 			if itemdef and itemdef.after_place_node then
 				local result, msg = pcall (itemdef.after_place_node, pos, nil, stack, pointed_thing)
@@ -154,9 +154,11 @@ local function place_node (itemname, pos)
 				pcall (minetest.sound_play, itemdef.sounds.place, { pos = pos })
 			end
 		end
-	end
 
 		return true
+	end
+
+	return false
 end
 
 
@@ -219,7 +221,7 @@ local function deploy_item (pos, node, slot, range)
 					local deploypos = get_deploy_pos (pos, node.param2, range)
 
 					if item and deploypos then
-						if place_node (name, deploypos) then
+						if place_node (stack, deploypos) then
 							stack:set_count (stack:get_count () - 1)
 							inv:set_stack ("main", slot, stack)
 
@@ -290,7 +292,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local spec =
 	"formspec_version[3]\n"..
@@ -308,6 +310,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("main", 16)
 	inv:set_width ("main", 4)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
 
 	-- If return true no item is taken from itemstack
 	return false
@@ -316,7 +325,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -325,6 +334,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Deployer (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -528,12 +539,120 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "main",
+			connect_sides = { left = 1, right = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("main", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("main", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("main", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("main", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local deployer_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	deployer_groups.tubedevice = 1
+	deployer_groups.tubedevice_receiver = 1
+end
+
+
+
+local deployer_on_groups = { cracky = 3, not_in_creative_inventory = 1 }
+if utils.pipeworks_supported then
+	deployer_on_groups.tubedevice = 1
+	deployer_on_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:deployer", {
 	description = S("Deployer"),
 	tiles = { "lwdeployer.png", "lwdeployer.png", "lwdeployer.png",
 				 "lwdeployer.png", "lwdeployer.png", "lwdeployer_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (deployer_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -544,10 +663,12 @@ minetest.register_node("lwcomponents:deployer", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick
@@ -560,7 +681,7 @@ minetest.register_node("lwcomponents:deployer_locked", {
 	tiles = { "lwdeployer.png", "lwdeployer.png", "lwdeployer.png",
 				 "lwdeployer.png", "lwdeployer.png", "lwdeployer_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (deployer_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -571,10 +692,12 @@ minetest.register_node("lwcomponents:deployer_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_timer = on_timer,
 	on_rightclick = on_rightclick
@@ -588,7 +711,7 @@ minetest.register_node("lwcomponents:deployer_on", {
 	tiles = { "lwdeployer.png", "lwdeployer.png", "lwdeployer.png",
 				 "lwdeployer.png", "lwdeployer.png", "lwdeployer_face_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (deployer_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -601,9 +724,11 @@ minetest.register_node("lwcomponents:deployer_on", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node,
 	on_blast = on_blast,
 	on_timer = on_timer,
@@ -617,7 +742,7 @@ minetest.register_node("lwcomponents:deployer_locked_on", {
 	tiles = { "lwdeployer.png", "lwdeployer.png", "lwdeployer.png",
 				 "lwdeployer.png", "lwdeployer.png", "lwdeployer_face_on.png"},
 	is_ground_content = false,
-	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	groups = table.copy (deployer_on_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -630,9 +755,11 @@ minetest.register_node("lwcomponents:deployer_locked_on", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	after_place_node = after_place_node_locked,
 	on_blast = on_blast,
 	on_timer = on_timer,

destroyer.lua

@@ -0,0 +1,164 @@
+local utils = ...
+local S = utils.S
+
+
+
+local function trash (pos)
+	local meta = minetest.get_meta (pos)
+	local inv = (meta and meta:get_inventory ()) or nil
+
+	if inv then
+		local stack = inv:get_stack ("trash", 1)
+
+		if stack and not stack:is_empty () then
+			utils.on_destroy (stack)
+
+			inv:set_stack ("trash", 1, nil)
+		end
+	end
+end
+
+
+
+local function trash_delayed (pos)
+	minetest.after (0.1, trash, pos)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local inv = meta:get_inventory ()
+
+		if inv then
+			meta:set_string ("inventory", "{ trash = { [1] = '' } }")
+			meta:set_string ("formspec",
+				"formspec_version[3]"..
+				"size[11.75,8.5,false]"..
+				"label[5.15,1.0;Destroy]"..
+				"list[context;trash;5.3,1.25;1,1;]"..
+				"list[current_player;main;1.0,2.75;8,4;]"..
+				"listring[]")
+
+			inv:set_size ("trash", 1)
+			inv:set_width ("trash", 1)
+		end
+	end
+
+	utils.pipeworks_after_place (pos)
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function on_metadata_inventory_put (pos, listname, index, stack, player)
+	if listname == "trash" then
+		trash_delayed (pos)
+	end
+end
+
+
+
+local function on_metadata_inventory_move (pos, from_list, from_index,
+														 to_list, to_index, count, player)
+	if to_list == "trash" then
+		trash_delayed (pos)
+	end
+end
+
+
+
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "trash",
+			connect_sides = { left = 1, right = 1, front = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					trash_delayed (pos)
+
+					return inv:add_item ("trash", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("trash", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				return stack
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local destroyer_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	destroyer_groups.tubedevice = 1
+	destroyer_groups.tubedevice_receiver = 1
+end
+
+
+
+minetest.register_node("lwcomponents:destroyer", {
+	description = S("Destroyer"),
+	drawtype = "normal",
+	tiles = { "lwcomponents_destroyer_top.png", "lwcomponents_destroyer_top.png",
+				 "lwcomponents_destroyer_side.png", "lwcomponents_destroyer_side.png",
+				 "lwcomponents_destroyer_side.png", "lwcomponents_destroyer_side.png" },
+	is_ground_content = false,
+	groups = table.copy (destroyer_groups),
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "none",
+	param2 = 0,
+	floodable = false,
+
+	tube = pipeworks_support (),
+
+	after_place_node = after_place_node,
+	after_dig_node = utils.pipeworks_after_dig,
+	on_metadata_inventory_put = on_metadata_inventory_put,
+	on_metadata_inventory_move = on_metadata_inventory_move,
+})
+
+
+
+utils.hopper_add_container({
+	{"bottom", "lwcomponents:destroyer", "trash"}, -- insert items below from hopper above
+	{"side", "lwcomponents:destroyer", "trash"}, -- insert items from hopper at side
+})
+
+
+
+--

detector.lua

@@ -18,6 +18,12 @@ local function mesecons_on (pos)
 		if meta:get_int ("power_on") == 0 then
 			utils.mesecon_receptor_on (pos, utils.mesecon_default_rules)
 			meta:set_int ("power_on", 1)
+			local node = utils.get_far_node (pos)
+
+			if node then
+				node.param1 = 1
+				minetest.swap_node (pos, node)
+			end
 		end
 	end
 end
@@ -31,6 +37,12 @@ local function mesecons_off (pos)
 		if meta:get_int ("power_on") ~= 0 then
 			utils.mesecon_receptor_off (pos, utils.mesecon_default_rules)
 			meta:set_int ("power_on", 0)
+			local node = utils.get_far_node (pos)
+
+			if node then
+				node.param1 = 0
+				minetest.swap_node (pos, node)
+			end
 		end
 	end
 end
@@ -130,7 +142,7 @@ end
 
 local function get_entity_height (objref)
 	if objref.get_luaentity then
-		entity = objref:get_luaentity ()
+		local entity = objref:get_luaentity ()
 
 		if entity and entity.name then
 			def = minetest.registered_entities[entity.name]
@@ -165,7 +177,7 @@ local function detect (pos)
 		local object = minetest.get_objects_inside_radius (pos, radius + 0.5)
 		local detected_list = { }
 
-		for i = 1, #object do
+		for i = 1, #object, 1 do
 			if object[i]:is_player () then
 
 				-- player
@@ -410,7 +422,6 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	local is_off = itemstack and (itemstack:get_name () == "lwcomponents:detector" or
 											itemstack:get_name () == "lwcomponents:detector_locked")
 
-	meta:set_string ("inventory", "{ main = { }, filter = { } }")
 	meta:set_string ("formspec", get_form_spec (is_off, 1, 0, 0, 0, 0, 1))
 
 	meta:set_string ("entities", "false")
@@ -693,8 +704,10 @@ local function mesecon_support ()
 		{
 			receptor =
 			{
-				state = utils.mesecon_state_off,
-				rules = utils.mesecon_default_rules
+				state = utils.mesecon_state_on,
+				rules = function (node)
+					return (node.param1 == 0 and { }) or utils.mesecon_default_rules
+				end
 			}
 		}
 	end

digiswitch.lua

@@ -13,7 +13,7 @@ local function get_mesecon_rule_for_side (side)
 	if side == "white" then
 		return { { x = 0, y = 1, z = 0 } }
 	elseif side == "black" then
-		return { { x = 0, y = -1, z = 0 } } -- down doesn't work
+		return { { x = 0, y = -1, z = 0 } }
 	elseif side == "red" then
 		return { { x = -1, y = 0, z = 0 } }
 	elseif side == "green" then
@@ -32,13 +32,106 @@ local function get_mesecon_rule_for_side (side)
 			{ x =  0, y =  0, z =  1 },
 			{ x =  0, y =  0, z = -1 },
 			{ x =  0, y =  1, z =  0 },
-			{ x =  0, y = -1, z =  0 }, -- down doesn't work
+			{ x =  0, y = -1, z =  0 },
 		}
 	end
 end
 
 
 
+local side_bits =
+{
+	["white"]	= 0,
+	["black"]	= 1,
+	["red"]		= 2,
+	["green"]	= 3,
+	["blue"]		= 4,
+	["yellow"]	= 5
+}
+
+
+
+local function get_side_bit (side)
+	if side then
+		if side == "switch" then
+			return 64
+		end
+
+		local bit = side_bits[side]
+
+		if bit then
+			return math.pow (2, bit)
+		end
+	end
+
+	return 63
+end
+
+
+
+local function is_side_on (bits, side)
+	local bit = get_side_bit (side)
+
+	for i = 0, 6, 1 do
+		if (bit % 2) == 1 and (bits % 2) ~= 1 then
+			return false
+		end
+
+		bit = math.floor (bit / 2)
+		bits = math.floor (bits / 2)
+	end
+
+	return true
+end
+
+
+
+local function set_side_bit (bits, side, on)
+	local bit = get_side_bit (side)
+	local result = 0
+
+	for i = 0, 6, 1 do
+		if (bit % 2) == 1 then
+			if on then
+				result = result + math.pow (2, i)
+			end
+		elseif (bits % 2) == 1 then
+			result = result + math.pow (2, i)
+		end
+
+		bit = math.floor (bit / 2)
+		bits = math.floor (bits / 2)
+	end
+
+	return result
+end
+
+
+
+local function switch_on (pos, side)
+	utils.mesecon_receptor_on (pos, get_mesecon_rule_for_side (side))
+
+	local node = utils.get_far_node (pos)
+	if node then
+		node.param1 = set_side_bit (node.param1, side, true)
+		minetest.swap_node (pos, node)
+	end
+end
+
+
+
+local function switch_off (pos, side)
+	utils.mesecon_receptor_off (pos, get_mesecon_rule_for_side (side))
+
+	local node = utils.get_far_node (pos)
+	if node then
+		node.param1 = set_side_bit (node.param1, side, false)
+		minetest.swap_node (pos, node)
+	end
+end
+
+
+
 local function digilines_support ()
 	return
 	{
@@ -80,9 +173,9 @@ local function digilines_support ()
 							end
 
 							if words[1] == "on" then
-								utils.mesecon_receptor_on (pos, get_mesecon_rule_for_side (words[2]))
+								switch_on (pos, words[2])
 							elseif words[1] == "off" then
-								utils.mesecon_receptor_off (pos, get_mesecon_rule_for_side (words[2]))
+								switch_off (pos, words[2])
 							end
 						end
 					end
@@ -99,16 +192,32 @@ local function mesecon_support ()
 	{
 		receptor =
 		{
-			state = mesecon.state.off,
-			rules =
+			state = mesecon.state.on,
+
+			rules = function (node)
+				if is_side_on (node.param1, "switch") then
+					return utils.mesecon_default_rules
+				end
+
+				local r = { }
+				local sides =
 				{
-				{ x =  1, y =  0, z =  0 },
-				{ x = -1, y =  0, z =  0 },
-				{ x =  0, y =  0, z =  1 },
-				{ x =  0, y =  0, z = -1 },
-				{ x =  0, y =  1, z =  0 },
-				{ x =  0, y = -1, z =  0 }, -- down doesn't work
+					"white",
+					"black",
+					"red",
+					"green",
+					"blue",
+					"yellow",
 				}
+
+				for _, side in ipairs (sides) do
+					if is_side_on (node.param1, side) then
+						r[#r + 1] = get_mesecon_rule_for_side (side)[1]
+					end
+				end
+
+				return r
+			end
 		},
 	}
 end
@@ -124,7 +233,7 @@ local function on_construct (pos)
 		local formspec =
 		"formspec_version[3]\n"..
 		"size[6.0,4.0]\n"..
-		"field[1.0,0.8;4.0,1.0;channel;Channel;]\n"..
+		"field[1.0,0.8;4.0,1.0;channel;Channel;${channel}]\n"..
 		"button_exit[2.0,2.5;2.0,1.0;set;Set]\n"
 
 		meta:set_string ("formspec", formspec)
@@ -145,14 +254,6 @@ local function on_receive_fields (pos, formname, fields, sender)
 
 		if meta then
 			meta:set_string ("channel", fields.channel or "")
-
-			local formspec =
-			"formspec_version[3]\n"..
-			"size[6.0,4.0]\n"..
-			"field[1.0,0.8;4.0,1.0;channel;Channel;"..minetest.formspec_escape (meta:get_string ("channel")).."]\n"..
-			"button_exit[2.0,2.5;2.0,1.0;set;Set]\n"
-
-			meta:set_string ("formspec", formspec)
 		end
 	end
 end
@@ -172,6 +273,8 @@ minetest.register_node ("lwcomponents:digiswitch", {
          {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
       }
    },
+	paramtype = "none",
+	param1 = 0,
 	groups = { cracky = 2, oddly_breakable_by_hand = 2 },
 	sounds = default.node_sound_stone_defaults (),
 	mesecons = mesecon_support (),

dispenser.lua

@@ -158,11 +158,12 @@ local function dispense_item (pos, node, slot)
 						if not obj then
 							obj = minetest.add_item (spawn_pos, item)
 
+							if obj then
 								obj:set_velocity (dispense_velocity (node))
 							end
+						end
 
 						if obj then
-
 							stack:set_count (stack:get_count () - 1)
 							inv:set_stack ("main", slot, stack)
 
@@ -181,7 +182,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local spec =
 	"formspec_version[3]\n"..
@@ -199,6 +200,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("main", 16)
 	inv:set_width ("main", 4)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
 
 	-- If return true no item is taken from itemstack
 	return false
@@ -207,7 +215,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -216,6 +224,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Dispenser (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -411,12 +421,112 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "main",
+			connect_sides = { left = 1, right = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("main", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("main", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("main", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("main", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local dispenser_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	dispenser_groups.tubedevice = 1
+	dispenser_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:dispenser", {
 	description = S("Dispenser"),
 	tiles = { "lwdispenser.png", "lwdispenser.png", "lwdispenser.png",
 				 "lwdispenser.png", "lwdispenser.png", "lwdispenser_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (dispenser_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -427,10 +537,12 @@ minetest.register_node("lwcomponents:dispenser", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_rightclick = on_rightclick
 })
@@ -442,7 +554,7 @@ minetest.register_node("lwcomponents:dispenser_locked", {
 	tiles = { "lwdispenser.png", "lwdispenser.png", "lwdispenser.png",
 				 "lwdispenser.png", "lwdispenser.png", "lwdispenser_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (dispenser_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -453,10 +565,12 @@ minetest.register_node("lwcomponents:dispenser_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_rightclick = on_rightclick
 })

docs/breaker.txt

@@ -3,11 +3,13 @@ Breaker
 * This block is only available if digilines and/or mesecons are loaded.
 
 Breakers dig the node up to 5 nodes directly in front of them and drop
-the item at the back of them. The node is only dug if the breaker has a
-tool that can dig it or if it can be dug by hand, and there are no nodes
-before of it. ie. cannot dig 2nd node if 1st node has something in it.
-The tool is worn if used. Also acts as a digilines conductor. If the
-hopper mod is loaded, will take tools from the top and sides.
+the item at the back of them, or into a pipeworks tube if one is placed
+behind it. The node is only dug if the breaker has a tool that can dig it
+or if it can be dug by hand, and there are no nodes before of it. ie.
+cannot dig 2nd node if 1st node has something in it. The tool is worn if
+used. Also acts as a digilines conductor. If the hopper mod is loaded,
+will take tools from the top and sides. Pipeworks tubes can push items
+into and pull items from the inventory.
 
 Only the owner can dig or access the form of the locked version.
 

docs/camera.txt

@@ -0,0 +1,41 @@
+Camera
+------
+* This block is only available if digilines is loaded.
+
+Cameras take an image in the direction they are facing. The colors in the
+image represent what is being viewed. Nodes are gray, entities are blue and
+players are green. The closer they are to the camera the brighter the color.
+The viewing distance of the camera is 1 to 16 nodes. Also acts as a
+digilines conductor.
+
+Only the owner can dig or access the form of the locked version.
+
+UI
+
+Channel - digilines channel of camera.
+Distance - the viewing distance forward from the camera (1 to 16).
+Resolution - the image resolution (for both width and height, 1 to 128).
+
+Digilines messages
+
+"scan"
+	Sends a digilines message with the camera's channel and a table of the
+	image as the message (see below).
+
+"distance n"
+	Sets the viewing distance of the camera. Will be clipped between 1 and
+	16.
+
+"resolution n"
+	Sets the image resolution of the camera.
+
+The image is an indexed table of indexed tables. Each inner table is one
+line of the image ordered top to bottom. There are resolution number of
+lines. Each line has a string value for each pixel of that line left to
+right. The string is a hex color string eg. "00FF00". There are resolution
+number of pixels per line.
+
+The image format is compatible with digistuff's digiscreens and lwcomputers'
+digiscreens and digipanels. It is best to set the resolution of the camera
+to the resolution of the display, then the image from the camera can be sent
+straight to the display device.

docs/cannon.txt

@@ -0,0 +1,104 @@
+Cannon
+------
+This item is available without digilines or mesecons as it can be used
+manually.
+
+Contains a single inventory slot and shoots an item on command.
+If the hopper mod is loaded, will take items from the top and sides, and
+release them from the bottom. Pipeworks tubes can push items into and pull
+items from the inventory.
+
+Cannon rotation range:
+side to side - +/-60 degrees (- = left, + = right)
+down to up: -20 to 70 degrees (- = down, + = up)
+
+To spawn entities from cannons include the lwcomponents_spawners mod.
+
+Only the owner can dig or access the form of the locked version.
+
+UI
+
+Channel - digilines channel of cannon.
+Hide - hides the form so the cannon can be used manually, double right click
+		 any other face besides the rear to bring up the form.
+Controller - digistuff game controller digilines channel.
+Sensitive - if checked game controller movements have a x3 sensitivity.
+Top 1 slot inventory - storage of items to shoot.
+Bottom 32 slot inventory - player's inventory.
+
+Manual control
+Place some items in the single slot, and click the Hide button. On the
+rear panel their are 4 gray buttons. Right clicking them turns the barrel
+in that direction 10 degrees. aux + right click turns 1 degree. Clicking
+the red button fires an item. To bring up the form again double right click
+any other face besides the rear.
+
+Digistuff game controller
+Connect a game controller to the cannon with digilines cable. Enter the
+game controller's channel in the Controller field of the cannon's form
+(click Set). Your turning movements turn the cannon's barrel in the
+direction the cannon is facing. If Sensitive is checked the movements
+have an increased sensitivity (x3) to try and keep the target in your view,
+otherwise x1. Punching shoots an item. The game controller updates every
+0.2 seconds, so a quick punch may not register. A locked cannon can only
+be controlled by it's owner with a game controller.
+
+Mesecons
+	Shoots an item when power is turned on.
+
+Digilines messages
+
+"pitch <n>"
+	Sets the pitch of the barrel. n should be between -20 to 70, and will
+	be clipped to this range.
+	eg. "pitch 22"
+
+"rotation <n>"
+	Sets the rotation of the barrel. n should be between -60 to 60, and will
+	be clipped to this range.
+	eg. "rotation 45"
+
+table - aim position
+{
+	action = "aim",
+	aim = { x, y, z }
+}
+	x is the horizontal left (negative) to right. 0 is straight ahead.
+	y is the vertical down (negative) to up. 0 is straight ahead.
+	z is the depth. Must be > 0 or ignored. 1 is the position directly in
+	front of the cannon.
+	*	The cannon barrel's height is 0.65 above the cannon's placed position.
+		When aiming for height, if the cannon's base height is taken as -0.5,
+		and consider height from there. This allows for the barrel height
+		and a little drop in the projectile at close range.
+
+"fire"
+	Shoots an item.
+
+*	Note: turning the barrel is animated and takes 0.1 seconds per 10
+			degrees of movement. A fire command while moving is ignored.
+
+
+Three shells are provided for cannons.
+
+Shell
+This shell has a 70% chance of destroying a node within a radius of 2 from
+the impact, a 5% chance a flammable node will be set on fire within a
+radius of 2 (if fire is installed), and damages players and entities within
+a radius of 4 with a maximum of 20 damage points.
+
+
+Soft Shell
+This shell has a 50% chance of destroying only soft (buildable_to) nodes,
+such as grass, within a radius of 2 from the impact, a 5% chance a flammable
+node will be set on fire within a radius of 2 (if fire is installed), and
+damages players and entities within a radius of 4 with a maximum of 20
+damage points.
+
+
+Fire Shell
+* This item is only available if fire is installed.
+This shell does not destroying nodes, has a 70% chance of setting a node
+on fire, whether its flammable or not within a radius of 2, and damages
+players and entities within a radius of 4 with a maximum of 20 damage
+points.

docs/collector.txt

@@ -4,7 +4,8 @@ Collector
 
 Picks up dropped items in adjacent block, with optional filtering. Also
 acts as a digilines conductor. If the hopper mod is loaded, will take items
-from the top and sides, and release them from the bottom.
+from the top and sides, and release them from the bottom. Pipeworks tubes
+can push items into and pull items from the inventory.
 
 Only the owner can dig or access the form of the locked version.
 

docs/conduit.txt

@@ -1,32 +1,47 @@
 Conduit
 -------
-* This block is only available if digilines and/or mesecons are loaded.
 
 Conduits are connected in a circuit, and can move items from their
 inventory to another conduit in the same circuit.
 
 When a conduit node is placed it has a simple form that asks for a channel.
 This channel is both the digilines' channel and the target id of this
-conduit within the circuit. A conduit does not have to be given a name.
+conduit within the circuit. A conduit does not have to be given a channel.
 Most of them are just used to connect other conduits together.
 
-Transfer of items takes 0.1 seconds per conduit node moved.
+Transfer of items takes 0.1 seconds per conduit node moved, and will work
+in unloaded blocks.
+
+Filtering of items can be done by placing an item into a filter slot and
+setting a target for that item. If an item is not filtered it is sent to
+the main target. Filtering can also be implemented through digilines.
+
+Conduits also act as a digilines conductor. If the hopper mod is loaded,
+the conduit will take items from the top and sides, and release them from
+the bottom. Be aware that hoppers from the hopper mod have some deficits
+that can cause some nodes from this mod to not function correctly in
+multi-player environments. The hoppers from this mod are more compatible.
+Pipeworks tubes can push items into and pull items from the inventory.
+
+Note that if a sending conduit is moved (as with a piston) while in the
+process of sending items, when the conduit is moved back into a circuit
+a duplicate of the last sent item/s can be resent.
 
-Also acts as a digilines conductor. If the hopper mod is loaded, will
-take items from the top and sides, and release them from the bottom.
 
 Only the owner can dig or access the form of the locked version.
 
 UI
 
-Channel - digilines channel/target id of circuit.
-Target - target id/channel of circuit this circuit will transfer to.
+Channel - digilines channel/target id of conduit.
+Target - target id/channel of conduit this conduit will transfer to.
 Automatic - if checked transfers next item every second without command.
-Top right 16 slot inventory - storage of items.
+Top center 16 slot inventory - storage of items.
 Bottom 32 slot inventory - player's inventory.
+Filter - 8 vertical slot inventory on the right, each with their accompanying
+			target field.
 
 Mesecons
-	Transfers the next item when power is turned on to the target circuit.
+	Transfers the next item when power is turned on to the target conduit.
 
 Digilines messages
 "target <id>"
@@ -44,7 +59,7 @@ Digilines messages
 
 "transfer"
 	Simple transfer. Transfers the next item in the inventory to the target
-	circuit (same as mesecons power).
+	conduit (same as mesecons power).
 
 table message
 {
@@ -54,13 +69,41 @@ table message
 	item = "<itemname>"
 }
 
-	If target is not given, the circuit's set target is used.
+	If target is not given, the conduit determines the target from it's
+	own settings.
 
 	slot should be a number between 1 to 16. If the slot is empty nothing
 	is transferred.
 
-	item should be the registered item name. If the circuit's inventory
+	item should be the registered item name. If the conduit's inventory
 	does not contain any nothing is transferred.
 
 	Only slot or item should be given. If both are given slot is used. If
 	neither are given the next item in the inventory is transferred.
+
+"inventory"
+	Sends a digilines message with it's own channel in the following form:
+	{
+		action = "inventory",
+		inventory = {
+			<items>
+		}
+	}
+		The inventory key is an indexed list of items in the conduit in slot
+		order. Each item entry is a table with the following keys:
+		{
+			name -- string, the name of the item, as <mod>:<name>
+			description -- string, description of the item, same as in UI
+			count -- number, the total number of this item in storage
+			custom -- true if a custom item (has metadata), false if not
+			pallet_index -- string if the item has a pallet index, otherwise nil
+		}
+			The description is derived from the short description, if none
+			then the description, and if none then the item's name, as
+			<mod>:<name>.
+
+Note: When sending transfer messages the simple item name, as <mod>:<name>,
+will work for most items, but not for custom items. With custom items, or
+to play it safe, use the table form of the transfer message and use the
+index for the item from an inventory message as the slot for the transfer
+message.

docs/deployer.txt

@@ -7,6 +7,7 @@ node is only placed if there are no nodes before of it which are not
 replaceable. ie. cannot place 2nd node if 1st node has something in it.
 Also acts as a digilines conductor. If the hopper mod is loaded, will
 take items from the top and sides, and release them from the bottom.
+Pipeworks tubes can push items into and pull items from the inventory.
 
 Only the owner can dig or access the form of the locked version.
 

docs/destroyer.txt

@@ -0,0 +1,11 @@
+Destroyer
+---------
+
+Destroyers dispose of items placed in their single slot inventory (basically
+a trash). Items can be push into destroyers with tubes from pipeworks or
+hoppers attached to the top or sides, so they are suitable for automation.
+Items cannot be pulled out of destroyers.
+
+Note that destroyers act when an item is placed in their inventory, as with
+storage indexers it is best to use the hopper from this mod to feed them
+in multi-player games.

docs/digistuff-touchscreen.txt

@@ -0,0 +1,160 @@
+
+1st right click - set channel, can't be changed after that.
+Following right clicks displays touchscreen form.
+
+Sent message as a table. Each command can be sent individually or as
+indexes of a table to run as batch.
+
+
+Clears the current form.
+{
+	command = "clear"
+}
+
+
+Adds elements to the form. The form is size[10,8]. The parameters are as
+for formspec (see api docs). No version is specified.
+
+{
+	command = "realcoordinates",
+	enabled = true or false
+}
+
+{
+	command = "addimage",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	texture_name = string
+}
+
+{
+	command = "addfield",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	label = string,
+	default = string
+}
+
+{
+	command = "addpwdfield",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	label = string
+}
+
+{
+	command = "addtextarea",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	label = string,
+	default = string
+}
+
+{
+	command = "addlabel",
+	X = n,
+	Y = n,
+	label = string
+}
+
+{
+	command = "addvertlabel",
+	X = n,
+	Y = n,
+	label = string
+}
+
+{
+	command = "addbutton",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	label = string
+}
+
+{
+	command = "addbutton_exit",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	label = string
+}
+
+{
+	command = "addimage_button",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	image = string,
+	name = string,
+	label = string
+}
+
+{
+	command = "addimage_button_exit",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	image = string,
+	name = string,
+	label = string
+}
+
+{
+	command = "adddropdown",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	name = string,
+	selected_id = n,
+	choices = { string [, string ... ] }
+}
+
+{
+	command = "addtextlist",
+	X = n,
+	Y = n,
+	W = n,
+	H = n,
+	transparent = true/false,
+	name = string,
+	selected_id = n,
+	listelements = { string [, string ... ] }
+}
+
+
+If unlocked ignores protection.
+
+{
+	command = "lock"
+}
+
+
+{
+	command = "locked"
+}
+
+
+
+When the touchscreen form is accessed a message is sent with the
+touchscreen's channel with the 'fields' parameter from the on_receive_fields
+handler, with an additional field 'clicker' with the name of the player
+that accessed the form.

docs/dispenser.txt

@@ -4,7 +4,8 @@ Dispenser
 
 Contains an inventory and dispenses (with velocity) an item on command.
 Also acts as a digilines conductor. If the hopper mod is loaded, will take
-items from the top and sides, and release them from the bottom.
+items from the top and sides, and release them from the bottom. Pipeworks
+tubes can push items into and pull items from the inventory.
 
 To spawn entities from dispensers include the lwcomponents_spawners mod.
 

docs/dropper.txt

@@ -4,7 +4,8 @@ Dropper
 
 Contains an inventory and drops an item on command. Also acts as a
 digilines conductor. If the hopper mod is loaded, will take items from the
-top and sides, and release them from the bottom.
+top and sides, and release them from the bottom. Pipeworks tubes can push
+items into and pull items from the inventory.
 
 Only the owner can dig or access the form of the locked version.
 

docs/force_field_generator.txt

@@ -0,0 +1,67 @@
+Force Field Generator
+---------------------
+
+Force field generators repel players and mobs within a given radius from
+the generator. The radius can be 5 to 25 and is in all directions. An
+'electric dome' appears marking the field. The generator consumes fuel
+relative to the radius. A radius of 25 uses 1 coal in 10 seconds, 5 uses
+1 coal in 50 seconds. Each time an entity is repelled it cost 1 fuel value
+(1/40 of a coal). Any players or mobs permitted inside the field can be
+added to the Permit list. Each entry must be on a new line with no extra
+spaces. Empty lines (not even a space) are ignored. The mob's registered
+name or tag can be used. The owner of a locked generator will not be
+repelled. When something is repelled it takes a small amount of damage.
+
+Only the owner can dig or access the form of the locked version.
+
+UI
+Channel - digilines channel of generator.
+Radius - the node radius to repel, in every direction. 5 to 25.
+Permit - list of players or mobs to allow within field. Mobs can be registered
+			entity name or tag.
+Start/Stop button - starts and stops the field.
+Fuel - single slot inventory.
+Player inventor - 32 slot inventory at bottom.
+
+
+Mesecons
+	Turns the generator on and off.
+
+
+Digilines messages
+
+"start"
+	Start the generator.
+
+"stop"
+	Stop the generator.
+
+"radius n"
+	Set the radius to n, where n is a number between 5 to 25.
+
+"add <name>"
+	Add a name to the permit list.
+
+"remove <name>"
+	Remove a name from the permit list.
+
+"status"
+	Query the status of the generator. The generator will send a digilines
+	message with its own channel as the following table:
+	{
+		action = "status",
+		state = "on" | "off",
+		radius = n, -- radius as number
+		permit =
+		{
+			<list of names>
+		},
+		fuel =
+		{
+			name = name, -- eg. "default:coal_lump", will be "" if empty
+			count = n, -- count of fuel
+		}
+	}
+
+
+Hoppers and pipeworks tubes can be used to push or pull the fuel.

docs/hopper.txt

@@ -0,0 +1,12 @@
+Hopper
+------
+* This block is only available if the hopper mod is loaded.
+
+This version of a hopper will transfer items from a drop or inventory in
+the node at the wide end of the hopper to the inventory in the node at the
+narrow end of the hopper. The hopper has no inventory itself, and always
+moves items one at a time, every second. These hoppers cannot be chained
+to transfer items, but work in unloaded blocks. This hopper uses the
+hopper mod's registered list of nodes, and should work with nodes with
+hopper support. These hoppers can be rotated with a screwdriver, but
+function as their typical placement when rotated.

docs/movefloor.txt

@@ -1,6 +1,6 @@
 MoveFloor
 ---------
-* This block is only available if mesecons and mesecons_mvps is loaded.
+* This block is only available if mesecons is loaded.
 
 The MoveFloor block responds to a mesecons power source in the 4 horizontal
 directions. If the power source is one higher the MoveFloor moves up to

docs/pistons.txt

@@ -0,0 +1,43 @@
+Pistons and sticky pistons
+--------------------------
+* These blocks are only available if digilines and/or mesecons are loaded.
+
+Pistons push up to the setting Maximum piston nodes (default 15) in front
+of the pusher when extended. Sticky piston draw back a single node in
+front of the pusher when retracted. Piston also act as a digilines
+conductor.
+
+Sticky blocks are also supported. Any sticky block structure attached to
+the pusher will also be pushed, up to the maximum setting. Any free blocks
+(not attached to the sticky blocks) in front will be pushed up to the
+maximum setting. This limit is from the pusher, not the sticky block. When
+retracting a maximum of one free block depth will be pulled. Any sticky
+block structure extending laterally by more than half the maximum limit
+will not be pushed.
+
+Any entities in front of or standing on a moving node are pushed/pulled,
+if nothing is in the way of their base position. Any entities against a
+sticky face are not pulled.
+
+UI
+
+Channel - digilines channel of piston.
+Single move - pusher extends 1 node if checked, otherwise 2 nodes.
+
+Mesecons
+	Piston extends while power is turned on.
+
+Digilines messages
+
+"extend n"
+	Extends the piston pusher to extent n (0, 1 or 2). If n is not given
+	pusher extends to maximum extent. 0 is retracted.
+
+"retract"
+	Same as 'extend 0'.
+
+"single"
+	Sets piston to single move mode.
+
+"double"
+	Sets piston to double move mode.

docs/storage.txt

@@ -0,0 +1,105 @@
+Storage
+-------
+
+Storage is accommodated with two nodes, Storage Unit and Storage Indexer.
+Storage units can be interacted with like a basic chest, each with 32 slots,
+and visually join together when placed adjacent to each other. Units are
+generally accessed via indexers, which action all adjoining units as a
+single storage block. Multiple indexers can action a single storage block.
+
+Only the owner can dig or access the form of the locked versions.
+
+Unowned indexers can only access unowned units. Owned indexers can access
+units of the same owner or unowned units.
+
+UI
+Search - top left.
+List - left.
+Channel - digilines channel of indexer.
+Input - middle.
+Output - top right.
+Filter - center right.
+Player inventor - lower right.
+
+When the UI is accessed the storage is scanned, and its contents are
+displayed in the list. The list contains the following columns:
+Item button - pressing will place one of these items from storage into the
+				  output.
+10 button - pressing will place 10 of the item.
+<stack> button - pressing places a full stack.
+Count - the total number of this item in storage.
+Description - description of the item.
+
+Note that the 10 and stack buttons may vary in number or not appear
+depending on the requirements of that item.
+
+The form does not update while open. A request for more items than in
+storage will only deliver the amount in storage.
+
+Terms can be entered into the search field, and when enter is pressed or
+the Search button is pressed, only items whose description contains these
+terms are shown in the list. That is if they match any of the space
+separated terms.
+
+Any items placed into the input are placed into storage. If the filter
+is clear all items are accepted. If the filter contains items only these
+items will be accepted. Any items not accepted or that do not fit into
+storage are placed into the output.
+
+When items are placed into the filter a copy is used and the item returns
+to where it was taken from. When items are removed from the filter they
+are disposed of.
+
+Hoppers placed to the top or sides of an indexer will feed items into the
+input. Hoppers placed below an indexer will take items from the output.
+Note, when a hopper from the hopper mod is used to place items into the
+input, if the player that placed the hopper leaves the game the input will
+not be pulled into storage.
+
+Pipeworks tubes can push items into the input, and pull items from the
+output.
+
+Every 20 inputs the storage is consolidated to minimize fragmentation.
+
+
+Digilines messages
+
+"output <item> <count>"
+or
+{
+	action = "output",
+	item = "<item>",
+	count = <count>
+}
+	Moves the item/s to the output. If count is omitted defaults to 1. If
+	the requested amount is greater than in storage, only the stored amount
+	is moved. If the requested amount is greater than a full stack of the
+	item a full stack is moved.
+
+
+"inventory"
+	Sends a digilines message with it's own channel in the following form:
+	{
+		action = "inventory",
+		inventory = {
+			<items>
+		}
+	}
+		The inventory key is an indexed list of items in storage. Each item
+		entry is a table with the following keys:
+		{
+			name -- string, the name of the item, as <mod>:<name>
+			description -- string, description of the item, same as in UI
+			count -- number, the total number of this item in storage
+			custom -- true if a custom item (has metadata), false if not
+			pallet_index -- string if the item has a pallet index, otherwise nil
+			id -- string, unique id of the item in storage
+		}
+			The description is derived from the short description, if none
+			then the description, and if none then the item's name, as
+			<mod>:<name>.
+
+Note: When sending output messages the simple item name, as <mod>:<name>,
+will work for most items, but not for custom items. With custom items, or
+to play it safe, use the table form of the output message and set the item
+field with the id field for the item from a returned inventory.

docs/through_wire.txt

@@ -0,0 +1,7 @@
+Mesecons Through Wire
+---------------------
+* This block is only available if mesecons is loaded.
+
+Will transmit mesecons power when placed one to two blocks apart opposing
+each other, through solid blocks or open space. Can also be used as a mesecons
+crossover.

dropper.lua

@@ -118,7 +118,7 @@ end
 
 
 
-local function after_place_node (pos, placer, itemstack, pointed_thing)
+local function after_place_base (pos, placer, itemstack, pointed_thing)
 	local meta = minetest.get_meta (pos)
 	local spec =
 	"formspec_version[3]\n"..
@@ -136,6 +136,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("main", 16)
 	inv:set_width ("main", 4)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
+	utils.pipeworks_after_place (pos)
 
 	-- If return true no item is taken from itemstack
 	return false
@@ -144,7 +151,7 @@ end
 
 
 local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
-	after_place_node (pos, placer, itemstack, pointed_thing)
+	after_place_base (pos, placer, itemstack, pointed_thing)
 
 	if placer and placer:is_player () then
 		local meta = minetest.get_meta (pos)
@@ -153,6 +160,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Dropper (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -348,12 +357,112 @@ end
 
 
 
+local function pipeworks_support ()
+	if utils.pipeworks_supported then
+		return
+		{
+			priority = 100,
+			input_inventory = "main",
+			connect_sides = { left = 1, right = 1, back = 1, bottom = 1, top = 1 },
+
+			insert_object = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:add_item ("main", stack)
+				end
+
+				return stack
+			end,
+
+			can_insert = function (pos, node, stack, direction)
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					return inv:room_for_item ("main", stack)
+				end
+
+				return false
+			end,
+
+			can_remove = function (pos, node, stack, dir)
+				-- returns the maximum number of items of that stack that can be removed
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (stack, s) then
+							return s:get_count ()
+						end
+					end
+				end
+
+				return 0
+			end,
+
+			remove_items = function (pos, node, stack, dir, count)
+				-- removes count items and returns them
+				local meta = minetest.get_meta (pos)
+				local inv = (meta and meta:get_inventory ()) or nil
+				local left = count
+
+				if inv then
+					local slots = inv:get_size ("main")
+
+					for i = 1, slots, 1 do
+						local s = inv:get_stack ("main", i)
+
+						if s and not s:is_empty () and utils.is_same_item (s, stack) then
+							if s:get_count () > left then
+								s:set_count (s:get_count () - left)
+								inv:set_stack ("main", i, s)
+								left = 0
+							else
+								left = left - s:get_count ()
+								inv:set_stack ("main", i, nil)
+							end
+						end
+
+						if left == 0 then
+							break
+						end
+					end
+				end
+
+				local result = ItemStack (stack)
+				result:set_count (count - left)
+
+				return result
+			end
+		}
+	end
+
+	return nil
+end
+
+
+
+local dropper_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	dropper_groups.tubedevice = 1
+	dropper_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:dropper", {
 	description = S("Dropper"),
 	tiles = { "lwdropper.png", "lwdropper.png", "lwdropper.png",
 				 "lwdropper.png", "lwdropper.png", "lwdropper_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (dropper_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -364,10 +473,12 @@ minetest.register_node("lwcomponents:dropper", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_rightclick = on_rightclick
 })
@@ -379,7 +490,7 @@ minetest.register_node("lwcomponents:dropper_locked", {
 	tiles = { "lwdropper.png", "lwdropper.png", "lwdropper.png",
 				 "lwdropper.png", "lwdropper.png", "lwdropper_face.png"},
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (dropper_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -390,10 +501,12 @@ minetest.register_node("lwcomponents:dropper_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_receive_fields = on_receive_fields,
 	after_place_node = after_place_node_locked,
 	can_dig = can_dig,
+	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
 	on_rightclick = on_rightclick
 })

dummy_player.lua

@@ -0,0 +1,438 @@
+
+
+local function get_dummy_player (as_player, name, pos, look_dir, controls, velocity,
+											hp, armor_groups, properties, nametag, breath)
+	local obj_as_player = as_player ~= false
+	local obj_name = name or ""
+	local obj_pos = vector.new (pos or { x = 0, y = 0, z = 0 })
+	local obj_look_dir = vector.new (look_dir or { x = 0, y = 0, z = 0 })
+	local obj_controls = table.copy (controls or { })
+	local obj_velocity = vector.new (velocity or { x = 0, y = 0, z = 0 })
+	local obj_hp = hp or 20
+	local obj_armor_groups = table.copy (armor_groups or { })
+	local obj_properties = table.copy (properties or { })
+	local obj_nametag = table.copy (nametag or { })
+	local obj_breath = breath or 20
+
+	local object = { }
+
+	-- common
+	object.get_pos = function (self)
+		return vector.new (obj_pos)
+	end
+
+
+	object.set_pos = function (self, pos)
+		obj_pos = vector.new (pos)
+	end
+
+
+	object.get_velocity = function (self)
+		return vector.new (obj_velocity)
+	end
+
+
+	object.add_velocity = function (self, vel)
+		obj_velocity = vector.add (obj_velocity, vel)
+	end
+
+
+	object.move_to = function (self, pos, continuous)
+		obj_pos = vector.new (pos)
+	end
+
+
+	object.punch = function (self, puncher, time_from_last_punch, tool_capabilities, direction)
+	end
+
+
+	object.right_click = function (self, clicker)
+	end
+
+
+	object.get_hp = function (self)
+		return obj_hp
+	end
+
+
+	object.set_hp = function (self, hp, reason)
+		obj_hp = hp
+	end
+
+
+	object.get_inventory = function (self)
+		return nil
+	end
+
+
+	object.get_wield_list = function (self)
+		return nil
+	end
+
+
+	object.get_wield_index = function (self)
+		return nil
+	end
+
+
+	object.get_wielded_item = function (self)
+		return nil
+	end
+
+
+	object.set_wielded_item = function (self, item)
+	end
+
+
+	object.set_armor_groups = function (self, groups)
+		obj_armor_groups = groups
+	end
+
+
+	object.get_armor_groups = function (self)
+		return table.copy (obj_armor_groups)
+	end
+
+
+	object.set_animation = function (self, frame_range, frame_speed, frame_blend, frame_loop)
+	end
+
+
+	object.get_animation = function (self)
+		return { x = 1, y = 1 }, 15.0, 0.0, true
+	end
+
+
+	object.set_animation_frame_speed = function (self, frame_speed)
+	end
+
+
+	object.set_attach = function (self, parent, bone, position, rotation, forced_visible)
+	end
+
+
+	object.get_attach = function (self)
+		return nil
+	end
+
+
+	object.get_children = function (self)
+		return { }
+	end
+
+
+	object.set_detach = function (self)
+	end
+
+
+	object.set_bone_position = function (self, bone, position, rotation)
+	end
+
+
+	object.get_bone_position = function (self)
+		return nil
+	end
+
+
+	object.set_properties = function (self, properties)
+		obj_properties = table.copy (properties or { })
+	end
+
+
+	object.get_properties = function (self)
+		return table.copy (obj_properties)
+	end
+
+
+	object.is_player = function (self)
+		return obj_as_player
+	end
+
+
+	object.get_nametag_attributes = function (self)
+		return obj_nametag
+	end
+
+
+	object.set_nametag_attributes = function (self, attributes)
+		obj_nametag = table.copy (attributes)
+	end
+
+
+
+	-- player
+	object.get_player_name = function (self)
+		return obj_name
+	end
+
+
+	object.get_player_velocity = function (self)
+		return table.copy (obj_velocity)
+	end
+
+
+	object.add_player_velocity = function (self, vel)
+		obj_velocity =  vector.add (obj_velocity, vel)
+	end
+
+
+	object.get_look_dir = function (self)
+		return table.copy (obj_look_dir)
+	end
+
+
+	object.get_look_vertical = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).x
+	end
+
+
+	object.get_look_horizontal = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).y
+	end
+
+
+	object.set_look_vertical = function (self, radians)
+		obj_look_dir = vector.new ({ x = radians, y = obj_look_dir.y, z = obj_look_dir.z })
+	end
+
+
+	object.set_look_horizontal = function (self, radians)
+		obj_look_dir = vector.new ({ x = obj_look_dir.x, y = radians, z = obj_look_dir.z })
+	end
+
+
+	object.get_look_pitch = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).x
+	end
+
+
+	object.get_look_yaw = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).y
+	end
+
+
+	object.set_look_pitch = function (self, radians)
+		obj_look_dir = vector.new ({ x = radians, y = obj_look_dir.y, z = obj_look_dir.z })
+	end
+
+
+	object.set_look_yaw = function (self, radians)
+		obj_look_dir = vector.new ({ x = obj_look_dir.x, y = radians, z = obj_look_dir.z })
+	end
+
+
+	object.get_breath = function (self)
+		return obj_breath
+	end
+
+
+	object.set_breath = function (self, value)
+		obj_breath = value
+	end
+
+
+	object.get_fov = function (self)
+		return 0, false, 0
+	end
+
+
+	object.set_fov = function (self, fov, is_multiplier, transition_time)
+		obj_breath = value
+	end
+
+
+	object.get_attribute = function (self, attribute)
+		return nil
+	end
+
+
+	object.set_attribute = function (self, attribute, value)
+	end
+
+
+	object.get_meta = function (self)
+		return nil
+	end
+
+
+	object.set_inventory_formspec = function (self, formspec)
+	end
+
+
+	object.get_inventory_formspec = function (self)
+		return ""
+	end
+
+
+	object.set_formspec_prepend = function (self, formspec)
+	end
+
+
+	object.get_formspec_prepend = function (self)
+		return ""
+	end
+
+
+	object.get_player_control = function (self)
+		return table.copy (obj_controls)
+	end
+
+
+	object.set_physics_override = function (self, override_table)
+	end
+
+
+	object.get_physics_override = function (self)
+		return { }
+	end
+
+
+	object.hud_add = function (self, definition)
+		return nil
+	end
+
+
+	object.hud_remove = function (self, id)
+	end
+
+
+	object.hud_change = function (self, id, stat, value)
+	end
+
+
+	object.hud_get = function (self, id)
+		return nil
+	end
+
+
+	object.hud_set_flags = function (self, flags)
+	end
+
+
+	object.hud_get_flags = function (self)
+		return { }
+	end
+
+
+	object.hud_set_hotbar_itemcount = function (self, count)
+	end
+
+
+	object.hud_get_hotbar_itemcount = function (self)
+		return 0
+	end
+
+
+	object.hud_set_hotbar_image = function (self, texturename)
+	end
+
+
+	object.hud_get_hotbar_image = function (self)
+		return ""
+	end
+
+
+	object.hud_set_hotbar_selected_image = function (self, texturename)
+	end
+
+
+	object.hud_get_hotbar_selected_image = function (self)
+		return ""
+	end
+
+
+	object.set_minimap_modes = function (self, modes, selected_mode)
+	end
+
+
+	object.set_sky = function (self, sky_parameters)
+	end
+
+
+	object.get_sky = function (self)
+		return nil
+	end
+
+
+	object.get_sky_color = function (self)
+		return nil
+	end
+
+
+	object.set_sun = function (self, sun_parameters)
+	end
+
+
+	object.get_sun = function (self)
+		return { }
+	end
+
+
+	object.set_moon = function (self, moon_parameters)
+	end
+
+
+	object.get_moon = function (self)
+		return { }
+	end
+
+
+	object.set_stars = function (self, star_parameters)
+	end
+
+
+	object.get_stars = function (self)
+		return { }
+	end
+
+
+	object.set_clouds = function (self, cloud_parameters)
+	end
+
+
+	object.get_clouds = function (self)
+		return { }
+	end
+
+
+	object.override_day_night_ratio = function (self, ratio)
+	end
+
+
+	object.get_day_night_ratio = function (self)
+		return nil
+	end
+
+
+	object.set_local_animation = function (self, idle, walk, dig, walk_while_dig, frame_speed)
+	end
+
+
+	object.get_local_animation = function (self)
+		return { x = 0, y = 0 }, { x = 0, y = 0 }, { x = 0, y = 0 }, { x = 0, y = 0 }, 30
+	end
+
+
+	object.set_eye_offset = function (self, firstperson, thirdperson)
+	end
+
+
+	object.get_eye_offset = function (self)
+		return { x = 0, y = 0, z = 0 }, { x = 0, y = 0, z = 0 }
+	end
+
+
+	object.send_mapblock = function (self, blockpos)
+		return false
+	end
+
+
+	return object
+end
+
+
+
+return get_dummy_player
+
+
+--

explode.lua

@@ -0,0 +1,520 @@
+local utils = ...
+local S = utils.S
+
+
+
+
+local explode = { }
+
+
+
+if minetest.global_exists ("fire") then
+
+
+explode.fire_supported = true
+
+
+function explode.set_fire (pos, burn_all)
+	local node = utils.get_far_node (pos)
+
+	if not node then
+		return
+	end
+
+	if node.name ~= "air" then
+		local def = minetest.registered_nodes[node.name]
+
+		if not def or not def.buildable_to then
+			return
+		end
+	end
+
+	local dirs =
+	{
+		{ x = 0, y = -1, z = 0 },
+		{ x = -1, y = 0, z = 0 },
+		{ x = 0, y = 0, z = -1 },
+		{ x = 1, y = 0, z = 0 },
+		{ x = 0, y = 0, z = 1 }
+	}
+
+	for i = 1, #dirs do
+		node = utils.get_far_node (vector.add (pos, dirs[i]))
+
+		if node and node.name ~= "air" and node.name ~= "fire:basic_flame" then
+			local def = minetest.registered_nodes[node.name]
+
+			if def and def.liquidtype == "none" then
+				if (def.groups and def.groups.flammable) or burn_all then
+					minetest.set_node (pos, { name = "fire:basic_flame" })
+
+					return
+				end
+			end
+		end
+	end
+end
+
+
+else
+
+
+explode.fire_supported = false
+
+
+function explode.set_fire (pos, burn_all)
+end
+
+
+end
+
+
+
+local function dig_node (pos, toolname)
+	local node = utils.get_far_node (pos)
+	local dig = false
+	local drops = nil
+
+	if toolname == true then
+		dig = true
+		toolname = nil
+	end
+
+	if node and node.name ~= "air" then
+		local def = utils.find_item_def (node.name)
+
+		if not dig then
+			if def and def.can_dig then
+				local result, can_dig = pcall (def.can_dig, pos)
+
+				dig = ((not result) or (result and (can_dig == nil or can_dig == true)))
+			else
+				dig = true
+			end
+		end
+
+		if dig then
+			local items = minetest.get_node_drops (node, toolname)
+
+			if items then
+				drops = { }
+
+				for i = 1, #items do
+					drops[i] = ItemStack (items[i])
+				end
+
+				if def and def.preserve_metadata then
+					def.preserve_metadata (pos, node, minetest.get_meta (pos), drops)
+				end
+			end
+
+			minetest.remove_node (pos)
+		end
+	end
+
+	return drops
+end
+
+
+
+local function add_drops (drops, drop)
+	if drops and drop then
+		for i = 1, #drop do
+			local item = ItemStack (drop[i])
+
+			if item and not item:is_empty () then
+				local existing = drops[item:get_name ()]
+
+				if existing and utils.is_same_item (item, existing) then
+					existing:set_count (existing:get_count () + item:get_count ())
+				else
+					drops[item:get_name ()] = item
+				end
+			end
+		end
+	end
+end
+
+
+
+local function explode_node (pos, dig_chance, intensity, drops, filter)
+	if not utils.is_protected (pos, nil) then
+		dig_chance = math.min (math.max (dig_chance, 0), 100)
+
+		if math.random (100) <= dig_chance then
+			local node = utils.get_far_node (pos)
+			local blasted = false
+
+			if node and node.name ~= "air" then
+				local def = minetest.registered_nodes[node.name]
+
+				if def then
+					if def.diggable == false then
+						return false
+					end
+
+					for k, v in pairs (filter) do
+						if def[k] == nil then
+							if filter[k.."_undefined"] == false then
+								return false
+							end
+						elseif def[k] ~= v then
+							return false
+						end
+					end
+
+					if def.on_blast then
+						def.on_blast (pos, intensity)
+						blasted = true
+					end
+				end
+
+				if not blasted then
+					local drop = dig_node (pos, true)
+
+					add_drops (drops, drop)
+				end
+
+				minetest.check_for_falling ({ x = pos.x, y = pos.y + 1, z = pos.z })
+
+				return true
+			end
+		end
+	end
+
+	return false
+end
+
+
+
+local function burn_node (pos, fire_chance, burn_all)
+	if not utils.is_protected (pos, nil) then
+		fire_chance = math.min (math.max (fire_chance, 0), 100)
+
+		if math.random (100) <= fire_chance then
+			explode.set_fire (pos, burn_all)
+		end
+	end
+end
+
+
+
+local function entity_is_drop (obj)
+	return obj.get_luaentity and obj:get_luaentity () and
+			 obj:get_luaentity ().name and
+			 obj:get_luaentity ().name == "__builtin:item"
+end
+
+
+
+local function explode_entities (pos, radius, damage, drops)
+	local objs = minetest.get_objects_inside_radius (pos, radius)
+
+	for _, obj in ipairs (objs) do
+		-- could be detached player from controller
+		if obj.get_pos and obj:get_pos () then
+			local obj_pos = obj:get_pos ()
+			local dir = vector.direction (pos, obj_pos)
+			local dist = vector.length (vector.subtract (obj_pos, pos))
+			local vel = vector.multiply (dir, ((radius + 1) - dist) / (radius + 1) * damage * 5)
+
+			if entity_is_drop (obj) then
+				obj:add_velocity (vel)
+
+			elseif not obj:get_armor_groups ().immortal then
+
+				local ent_damage = ((radius - dist) / radius * damage / 2) + (damage / 2)
+				local reason = { type = "set_hp", from = "lwcomponents" }
+
+				if obj:is_player() then
+					local parent = obj:get_attach ()
+
+					if parent then
+						obj:set_detach ()
+					end
+
+					obj:add_velocity (vel)
+					obj:set_hp (obj:get_hp () - ent_damage, reason)
+
+				else
+					local luaobj = obj:get_luaentity ()
+
+					-- object might have disappeared somehow
+					if luaobj then
+						if luaobj.name == "digistuff:controller_entity" then
+							for _, child in ipairs (obj:get_children ()) do
+								if child:is_player () then
+									local def = utils.find_item_def ("digistuff:controller_programmed")
+
+									if def and def.on_rightclick then
+										def.on_rightclick (obj:get_pos (), ItemStack (), child)
+
+										local ent_damage = ((radius - dist) / radius * damage / 2) + (damage / 2)
+										local reason = { type = "set_hp", from = "lwcomponents" }
+
+										child:add_velocity (vel)
+										child:set_hp (child:get_hp () - ent_damage, reason)
+									end
+								end
+							end
+						else
+							local do_damage = true
+							local do_knockback = true
+							local entity_drops = {}
+							local objdef = minetest.registered_entities[luaobj.name]
+
+							if objdef and objdef.on_blast then
+								do_damage, do_knockback, entity_drops = objdef.on_blast (luaobj, ent_damage)
+							end
+
+							if do_knockback then
+								obj:add_velocity (vel)
+							end
+
+							if do_damage then
+								obj:set_hp (obj:get_hp() - ent_damage, reason)
+							end
+
+							add_drops (drops, entity_drops)
+						end
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function spray_drops (pos, drops, damage)
+	local max_vel = damage * 2.5
+
+	for k, stack in pairs (drops) do
+		local vel =
+		{
+			x = math.random (max_vel) - (max_vel / 2),
+			y = math.random (max_vel) - (max_vel / 2),
+			z = math.random (max_vel) - (max_vel / 2)
+		}
+
+		local drop = minetest.add_item (pos, stack)
+
+		if drop then
+			drop:set_velocity (vel)
+		end
+	end
+end
+
+
+
+local function add_effects (pos, radius, drops)
+	minetest.add_particle ({
+		pos = pos,
+		velocity = vector.new (),
+		acceleration = vector.new (),
+		expirationtime = 0.4,
+		size = 30, -- radius * 10,
+		collisiondetection = false,
+		vertical = false,
+		texture = "lwcomponents_boom.png",
+		glow = 14,
+	})
+
+	minetest.add_particlespawner ({
+		amount = 64,
+		time = 0.5,
+		minpos = vector.subtract (pos, radius / 2),
+		maxpos = vector.add (pos, radius / 2),
+		minvel = {x = -10, y = -10, z = -10},
+		maxvel = {x = 10, y = 10, z = 10},
+		minacc = vector.new (),
+		maxacc = vector.new (),
+		minexptime = 1,
+		maxexptime = 2.5,
+		minsize = 9,  -- radius * 3,
+		maxsize = 15, -- radius * 5,
+		texture = "lwcomponents_smoke.png",
+	})
+
+	-- we just dropped some items. Look at the items entities and pick
+	-- one of them to use as texture
+	local texture = "lwcomponents_blast.png" --fallback texture
+	local node
+	local most = 0
+
+	if drops then
+		for name, stack in pairs (drops) do
+			local count = stack:get_count()
+			if count > most then
+				most = count
+				local def = minetest.registered_nodes[name]
+				if def then
+					node = { name = name }
+				end
+				if def and def.tiles and def.tiles[1] then
+					if type (def.tiles[1]) == "table" then
+						texture = def.tiles[1].name or "lwcomponents_blast.png"
+					elseif type (def.tiles[1]) == "string" then
+						texture = def.tiles[1]
+					end
+				end
+			end
+		end
+	end
+
+	minetest.add_particlespawner ({
+		amount = 64,
+		time = 0.1,
+		minpos = vector.subtract (pos, radius / 2),
+		maxpos = vector.add (pos, radius / 2),
+		minvel = {x = -3, y = 0, z = -3},
+		maxvel = {x = 3, y = 5,  z = 3},
+		minacc = {x = 0, y = -10, z = 0},
+		maxacc = {x = 0, y = -10, z = 0},
+		minexptime = 0.8,
+		maxexptime = 2.0,
+		minsize = 1, -- radius * 0.33,
+		maxsize = 3, -- radius,
+		texture = texture,
+		-- ^ only as fallback for clients without support for `node` parameter
+		node = node,
+		collisiondetection = true,
+	})
+end
+
+
+
+function utils.boom (pos,									-- center of explosion
+							node_radius, node_chance,		-- radius and chance in 100
+							fire_radius, fire_chance,		-- radius and chance in 100
+							entity_radius, entity_damage,	-- radius and max damage applied
+							disable_drops,						-- true to disable drops
+							node_filter,						-- node filter table as { buildable_to = true, buildable_to_undefined = false, ... }
+							burn_all,							-- true to set fire to anything, otherwise only flammable
+							sound)								-- sound on blast, if nil plays default
+
+	pos = vector.round (pos)
+	node_radius = math.floor (node_radius or 1)
+	fire_radius = math.floor (fire_radius or node_radius)
+	entity_radius = math.floor (entity_radius or node_radius * 2)
+	node_chance = node_chance or 80
+	fire_chance = fire_chance or 30
+	entity_damage = math.floor (entity_damage or entity_radius)
+	disable_drops = disable_drops == true
+	node_filter = node_filter or { }
+	burn_all = burn_all == true
+	sound = sound or "lwcannon"
+
+	local drops = { }
+	local effects_radius = (node_radius > 0 and node_radius) or entity_radius
+	local center_free = false
+
+	if not utils.is_protected (pos, nil) then
+		local center_node = utils.get_far_node (pos)
+
+		if not center_node or center_node.name == "air" then
+			center_free = true
+		end
+	end
+
+	if node_radius > 0 and node_chance > 0 then
+		local extents = node_radius * 2
+
+		for y = -extents, extents, 1 do
+			for z = -extents, extents, 1 do
+				for x = -extents, extents, 1 do
+					local node_pos = { x = x + pos.x, y = y + pos.y, z = z + pos.z }
+					local length = vector.length ({ x = x, y = y, z = z })
+
+					if node_chance > 0 and length <= node_radius then
+						if explode_node (node_pos, node_chance, 1.0, drops, node_filter) then
+							if vector.equals (pos, node_pos) then
+								center_free = true
+							end
+						end
+					end
+				end
+			end
+		end
+	end
+
+	if fire_radius > 0 and fire_chance > 0 then
+		local extents = fire_radius * 2
+
+		for y = -extents, extents, 1 do
+			for z = -extents, extents, 1 do
+				for x = -extents, extents, 1 do
+					local node_pos = { x = x + pos.x, y = y + pos.y, z = z + pos.z }
+					local length = vector.length ({ x = x, y = y, z = z })
+
+					if fire_chance > 0 and length <= fire_radius then
+						burn_node (node_pos, fire_chance, burn_all)
+					end
+				end
+			end
+		end
+	end
+
+	minetest.sound_play (sound,
+								{
+									pos = pos,
+									gain = 2.5,
+									max_hear_distance = math.min (effects_radius * 20, 128)
+								},
+								true)
+
+	if center_free then
+		minetest.set_node (pos, { name = "lwcomponents:boom" })
+	end
+
+	explode_entities (pos, entity_radius, entity_damage, drops)
+
+	if not disable_drops then
+		spray_drops (pos, drops, entity_damage)
+	end
+
+	add_effects (pos, effects_radius, drops)
+
+
+	minetest.log ("action", "A Shell explosion occurred at " .. minetest.pos_to_string (pos) ..
+									" with radius " .. entity_radius)
+end
+
+
+
+minetest.register_node ("lwcomponents:boom", {
+	description = S("Boom"),
+	drawtype = "airlike",
+	tiles = { "lwcomponents_boom.png" },
+	inventory_image = "lwcomponents_boom.png",
+	wield_image = "lwcomponents_boom.png",
+	light_source = default.LIGHT_MAX,
+	use_texture_alpha = "blend",
+	sunlight_propagates = true,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	climbable = false,
+	buildable_to = true,
+	floodable = true,
+	is_ground_content = false,
+	drop = "",
+	paramtype = "light",
+	param1 = 255,
+	post_effect_color = { a = 128, r = 255, g = 0, b = 0 },
+	groups = { dig_immediate = 3, not_in_creative_inventory = 1 },
+	on_construct = function (pos)
+		minetest.get_node_timer (pos):start (0.5)
+	end,
+	on_timer = function (pos, elapsed)
+		minetest.remove_node (pos)
+
+		return false
+	end,
+	-- unaffected by explosions
+	on_blast = function() end,
+})
+
+
+
+--

fan.lua

@@ -199,14 +199,10 @@ local function on_blast (pos, intensity)
 	if meta then
 		if intensity >= 1.0 then
 
-			clear_map (pos)
-
 			minetest.remove_node (pos)
 
 		else -- intensity < 1.0
 
-			clear_map (pos)
-
 			local node = minetest.get_node_or_nil (pos)
 			if node then
 				local items = minetest.get_node_drops (node, nil)

hopper.lua

@@ -0,0 +1,459 @@
+local utils, mod_storage = ...
+local S = utils.S
+
+
+
+if utils.hopper_supported then
+
+
+
+local hopper_interval = 1.0
+
+
+
+local hopper_list = minetest.deserialize (mod_storage:get_string ("hopper_list"))
+if type (hopper_list) ~= "table" then
+	hopper_list = {}
+end
+
+
+
+local function add_hopper_to_list (pos)
+	hopper_list[minetest.pos_to_string (pos, 0)] = true
+
+	mod_storage:set_string ("hopper_list", minetest.serialize (hopper_list))
+end
+
+
+
+local function remove_hopper_from_list (pos)
+	hopper_list[minetest.pos_to_string (pos, 0)] = nil
+
+	mod_storage:set_string ("hopper_list", minetest.serialize (hopper_list))
+end
+
+
+
+local input_dir =
+{
+	[0] = { x = 0, y = 1, z = 0 },
+	{ x = 0, y = 0, z = 1 },
+	{ x = 0, y = 0, z = -1 },
+	{ x = 1, y = 0, z = 0 },
+	{ x = -1, y = 0, z = 0 },
+	{ x = 0, y = -1, z = 0 }
+}
+
+local function get_input_dir (node)
+	return input_dir[math.floor (node.param2 / 4)]
+end
+
+
+
+local function get_output_dir (node)
+	if node then
+		if node.name == "lwcomponents:hopper" then
+			return vector.multiply (get_input_dir (node), -1)
+		elseif node.name == "lwcomponents:hopper_horz" then
+			return minetest.facedir_to_dir (node.param2)
+		end
+	end
+
+	return nil
+end
+
+
+
+local function get_drop (pos)
+	local objs = minetest.get_objects_inside_radius (pos, 1)
+
+	for _, obj in pairs (objs) do
+		local obj_pos = (obj.get_pos and obj:get_pos ())
+
+		if obj_pos and utils.is_drop (obj) then
+			obj_pos = vector.round (obj_pos)
+
+			if vector.equals (pos, obj_pos) then
+				local stack = ItemStack (obj:get_luaentity ().itemstring)
+
+				if stack and not stack:is_empty () then
+					stack:set_count (1)
+
+					return stack, obj
+				end
+			end
+		end
+	end
+end
+
+
+
+local function take_drop (obj)
+	if utils.is_drop (obj) then
+		local stack = ItemStack (obj:get_luaentity ().itemstring)
+
+		if stack and not stack:is_empty () then
+			stack:set_count (stack:get_count () - 1)
+
+			if stack:is_empty () then
+				obj:get_luaentity().itemstring = ""
+				obj:remove()
+			else
+				obj:get_luaentity().itemstring = stack:to_string ()
+			end
+		end
+	end
+end
+
+
+
+local function next_item_to_take (src_pos, src_node, src_inv_name)
+	if not src_inv_name or not minetest.registered_nodes[src_node.name] then
+		return
+	end
+
+	local src_meta = minetest.get_meta (src_pos)
+	local src_inv = (src_meta and src_meta:get_inventory ()) or nil
+
+	if src_inv then
+		local slots = src_inv:get_size (src_inv_name)
+
+		for slot = 1, slots, 1 do
+			local stack = src_inv:get_stack (src_inv_name, slot)
+
+			if stack and not stack:is_empty () then
+				stack:set_count (1)
+
+				return stack, slot
+			end
+		end
+	end
+end
+
+
+
+local function take_item (src_pos, src_inv_name, slot)
+	local src_meta = minetest.get_meta (src_pos)
+	local src_inv = (src_meta and src_meta:get_inventory ()) or nil
+
+	if src_inv then
+		local stack = src_inv:get_stack (src_inv_name, slot)
+
+		if stack and not stack:is_empty () then
+			stack:set_count (stack:get_count () - 1)
+
+			src_inv:set_stack (src_inv_name, slot, stack)
+		end
+	end
+end
+
+
+
+local function call_allow_metadata_inventory_put (def, pos, listname, index, stack, placer)
+	if def.allow_metadata_inventory_put and placer then
+		local result, count = pcall (def.allow_metadata_inventory_put,
+											  pos, listname, index, stack, placer)
+
+		if result then
+			return count
+		end
+	end
+
+	return utils.settings.default_stack_max
+end
+
+
+
+local function call_on_metadata_inventory_put (def, pos, listname, index, stack, placer)
+	if def.on_metadata_inventory_put and placer then
+		pcall (def.on_metadata_inventory_put, pos, listname, index, stack, placer)
+	end
+end
+
+
+
+local function place_item (dest_pos, dest_node, dest_inv_name, stack, placer)
+	local dest_def = minetest.registered_nodes[dest_node.name]
+
+	if not dest_inv_name or not dest_def then
+		return
+	end
+
+	local dest_meta = minetest.get_meta (dest_pos)
+	local dest_inv = (dest_meta and dest_meta:get_inventory ()) or nil
+
+	if dest_inv then
+		local slots = dest_inv:get_size (dest_inv_name)
+
+		-- find existing stack
+		for slot = 1, slots, 1 do
+			local inv_stack = dest_inv:get_stack (dest_inv_name, slot)
+
+			if inv_stack and not inv_stack:is_empty () and
+				utils.is_same_item (inv_stack, stack) and
+				inv_stack:get_count () < inv_stack:get_stack_max () and
+				(call_allow_metadata_inventory_put (dest_def, dest_pos, dest_inv_name, slot, stack, placer) > 0) then
+
+				inv_stack:set_count (inv_stack:get_count () + 1)
+				dest_inv:set_stack (dest_inv_name, slot, inv_stack)
+
+				call_on_metadata_inventory_put (dest_def, dest_pos, dest_inv_name, slot, stack, placer)
+
+				return true
+			end
+		end
+
+		-- find empty slot
+		for slot = 1, slots, 1 do
+			local inv_stack = dest_inv:get_stack (dest_inv_name, slot)
+
+			if not inv_stack or inv_stack:is_empty () and
+				(call_allow_metadata_inventory_put (dest_def, dest_pos, dest_inv_name, slot, stack, placer) > 0) then
+
+				dest_inv:set_stack (dest_inv_name, slot, stack)
+
+				call_on_metadata_inventory_put (dest_def, dest_pos, dest_inv_name, slot, stack, placer)
+
+				return true
+			end
+		end
+	end
+
+	return false
+end
+
+
+
+local function get_player_object (pos)
+	local meta = minetest.get_meta (pos)
+	local placer_name = "<unknown>"
+
+	if meta then
+		placer_name = meta:get_string ("placer_name")
+		local placer = minetest.get_player_by_name (placer_name)
+
+		if placer then
+			return placer
+		end
+
+		if placer_name == "" then
+			placer_name = "<unknown>"
+		end
+	end
+
+	return utils.get_dummy_player (true, placer_name)
+end
+
+
+
+local function run_hopper_action (pos)
+	local node = utils.get_far_node (pos)
+	local dest_dir = get_output_dir (node)
+
+	if dest_dir then
+		local dest_pos = vector.add (pos, dest_dir)
+		local dest_node = utils.get_far_node (dest_pos)
+
+		if dest_node then
+			local registered_dest_invs = hopper.get_registered_inventories_for (dest_node.name)
+
+			if registered_dest_invs then
+				local placer = get_player_object (pos)
+				local src_pos = vector.add (pos, get_input_dir (node))
+				local drop = nil
+				local stack = nil
+				local slot = nil
+				local src_inv_name = nil
+
+				stack, drop = get_drop (src_pos)
+
+				if not stack then
+					local src_node = utils.get_far_node (src_pos)
+
+					if src_node then
+						local registered_src_invs = hopper.get_registered_inventories_for (src_node.name)
+
+						if registered_src_invs then
+							src_inv_name = registered_src_invs["top"]
+							stack, slot = next_item_to_take (src_pos, src_node, src_inv_name)
+						end
+					end
+				end
+
+				if stack then
+					local dest_side = (node.name == "lwcomponents:hopper" and "bottom") or "side"
+					local dest_inv_name = registered_dest_invs[dest_side]
+
+					if place_item (dest_pos, dest_node, dest_inv_name, stack, placer) then
+						if drop then
+							take_drop (drop)
+						else
+							take_item (src_pos, src_inv_name, slot)
+						end
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function on_construct (pos)
+	add_hopper_to_list (pos)
+end
+
+
+
+local function on_destruct (pos)
+	remove_hopper_from_list (pos)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+
+	meta:set_string ("placer_name", (placer and placer:get_player_name ()) or "")
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function on_place (itemstack, placer, pointed_thing)
+	if pointed_thing and pointed_thing.type == "node" then
+		local stack = ItemStack (itemstack)
+		local dir = vector.direction (pointed_thing.above, pointed_thing.under)
+
+		if dir.y == 0 then
+			minetest.item_place (ItemStack ("lwcomponents:hopper_horz"), placer, pointed_thing)
+
+			if not utils.is_creative (placer) then
+				stack:set_count (stack:get_count () - 1)
+			end
+
+			return stack
+		end
+	end
+
+	return minetest.item_place (itemstack, placer, pointed_thing)
+end
+
+
+
+minetest.register_node ("lwcomponents:hopper", {
+   description = S("Conduit Hopper"),
+   tiles = { "lwcomponents_hopper_top.png", "lwcomponents_hopper_vert_spout.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png" },
+   drawtype = "nodebox",
+   node_box = {
+      type = "fixed",
+		fixed = {
+			{-0.3125, -0.5, -0.3125, 0.3125, -0.25, 0.3125}, -- spout_vert
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, -0.3125, 0.5, 0.5}, -- funnel_1
+			{-0.5, 0, 0.3125, 0.5, 0.5, 0.5}, -- funnel_2
+			{-0.5, 0, -0.5, 0.5, 0.5, -0.3125}, -- funnel_3
+			{0.3125, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel_4
+		}
+   },
+   selection_box = {
+      type = "fixed",
+		fixed = {
+			{-0.3125, -0.5, -0.3125, 0.3125, -0.25, 0.3125}, -- spout_vert
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+		}
+   },
+   collision_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	drop = "lwcomponents:hopper",
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+
+   on_construct = on_construct,
+   on_destruct = on_destruct,
+	after_place_node = after_place_node,
+	on_place = on_place,
+})
+
+
+
+minetest.register_node ("lwcomponents:hopper_horz", {
+   description = S("Conduit Hopper"),
+   tiles = { "lwcomponents_hopper_top.png", "lwcomponents_hopper_bottom.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png",
+				 "lwcomponents_hopper_side_spout.png", "lwcomponents_hopper_side.png" },
+   drawtype = "nodebox",
+   node_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, -0.3125, 0.5, 0.5}, -- funnel_1
+			{-0.5, 0, 0.3125, 0.5, 0.5, 0.5}, -- funnel_2
+			{-0.5, 0, -0.5, 0.5, 0.5, -0.3125}, -- funnel_3
+			{0.3125, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel_4
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+   selection_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+   collision_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	drop = "lwcomponents:hopper",
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+
+   on_construct = on_construct,
+   on_destruct = on_destruct,
+	after_place_node = after_place_node,
+})
+
+
+
+local function run_hoppers ()
+	for spos, _ in pairs (hopper_list) do
+		run_hopper_action (minetest.string_to_pos (spos))
+	end
+
+	minetest.after (hopper_interval, run_hoppers)
+end
+
+
+
+minetest.register_on_mods_loaded (function ()
+	minetest.after (3.0, run_hoppers)
+end)
+
+
+
+end -- utils.hopper_supported

init.lua

@@ -1,4 +1,4 @@
-local version = "0.1.9"
+local version = "0.1.26"
 local mod_storage = minetest.get_mod_storage ()
 
 
@@ -15,8 +15,10 @@ end
 local utils = { }
 local modpath = minetest.get_modpath ("lwcomponents")
 
-loadfile (modpath.."/utils.lua") (utils, mod_storage)
 loadfile (modpath.."/settings.lua") (utils)
+utils.get_dummy_player = loadfile (modpath.."/dummy_player.lua") ()
+loadfile (modpath.."/utils.lua") (utils, mod_storage)
+loadfile (modpath.."/explode.lua") (utils)
 loadfile (modpath.."/api.lua") (utils)
 utils.connections = loadfile (modpath.."/connections.lua") ()
 loadfile (modpath.."/dropper.lua") (utils)
@@ -31,6 +33,15 @@ loadfile (modpath.."/breaker.lua") (utils)
 loadfile (modpath.."/deployer.lua") (utils)
 loadfile (modpath.."/fan.lua") (utils)
 loadfile (modpath.."/conduit.lua") (utils, mod_storage)
+loadfile (modpath.."/hopper.lua") (utils, mod_storage)
+loadfile (modpath.."/cannon.lua") (utils)
+loadfile (modpath.."/cannon_shell.lua") (utils)
+loadfile (modpath.."/pistons.lua") (utils)
+loadfile (modpath.."/through_wire.lua") (utils)
+loadfile (modpath.."/camera.lua") (utils)
+loadfile (modpath.."/storage.lua") (utils)
+loadfile (modpath.."/force_field.lua") (utils)
+loadfile (modpath.."/destroyer.lua") (utils)
 loadfile (modpath.."/extras.lua") (utils)
 loadfile (modpath.."/digiswitch.lua") (utils)
 loadfile (modpath.."/movefloor.lua") (utils)

license.txt

@@ -13,6 +13,10 @@ without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 See the GNU Lesser General Public License for more details:
 https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 
+Mesecons through wire code was adapted from mesecons_receiver.
+
+Fragments of code were gleaned from tnt mod.
+
 
 
 lwsiren-buzz.ogg
@@ -59,6 +63,24 @@ https://creativecommons.org/licenses/by/4.0/
 
 
 
+lwmovefloor.ogg
+---------------
+https://www.freesoundslibrary.com/elevator-sound-effect-elevator-ride-doors-closing-and-opening/
+
+License: Attribution 4.0 International (CC BY 4.0). You are allowed to use
+sound effects free of charge and royalty free in your multimedia projects
+for commercial or non-commercial purposes.
+
+
+lwforce_field_zap.ogg
+---------------------
+https://orangefreesounds.com/electricity-zap/
+
+Licence: The sound effect is permitted for non-commercial use under license
+Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
+
+
+
 Media license
 -------------
 siren images derived from images from https://openclipart.org, which is
@@ -67,8 +89,21 @@ public domain.
 fan images derived from images from https://openclipart.org, which is
 public domain.
 
+camera lens images derived from images from https://openclipart.org, which
+is public domain.
+
+storage nodes images derived from images from https://openclipart.org, which
+is public domain.
+
 player button images derived from mesecons button image.
 
+cannon firing and explosion sound from tnt (TumeniNodes/steveygos93),
+released under CC0 1.0 (originally from https://freesound.org/s/80401/)
+
+boom image from tnt, released under CC BY-SA 3.0.
+
+Piston images and sounds from mesecons_pistons, released under CC-BY-SA 3.0.
+
 All other media, or media not covered by a licence, is licensed
 Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
 

mod.conf

@@ -3,4 +3,4 @@ description = Various components for mesecons and digilines.
 title = LWComponents
 name = lwcomponents
 depends = default
-optional_depends = lwdrops, mesecons, digilines, unifieddyes, intllib, hopper, digistuff
+optional_depends = mesecons, digilines, unifieddyes, intllib, hopper, digistuff, pipeworks

models/lwcomponents_cannon_barrel.obj

@@ -0,0 +1,625 @@
+# Blender v2.82 (sub 7) OBJ File: 'canon.blend'
+# www.blender.org
+mtllib lwcomponents_cannon_barrel.mtl
+o Canon
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+v -0.999994 -1.251549 1.868644
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models/lwcomponents_shell.obj

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models/piston_normal_1.obj

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models/piston_normal_2.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_normal_2.mtl
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models/piston_sticky_1.obj

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+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_sticky_1.mtl
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models/piston_sticky_2.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
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movefloor.lua

@@ -3,7 +3,7 @@ local S = utils.S
 
 
 
-if utils.mesecon_supported and mesecon.mvps_push then
+if utils.mesecon_supported then
 
 
 
@@ -21,14 +21,10 @@ local mesecon_rules =
 
 
 
--- use mesecons movestone settings
-local timer_interval = 1 / mesecon.setting ("movestone_speed", 3)
 local max_push = 3
-local max_pull = 3
 
 
 
--- helper functions:
 local function get_movefloor_direction (rulename)
 	if rulename.y > 0 then
 		return { x = 0, y = 1, z = 0 }
@@ -38,6 +34,7 @@ local function get_movefloor_direction (rulename)
 end
 
 
+
 local function add_movefloor_list (pos, list)
 	for i = 1, #list do
 		if list[i].x == pos.x and
@@ -76,10 +73,289 @@ end
 
 
 
--- copied from mesecons movestone
-local function movefloor_move (pos, node, rulename, is_sticky)
+local function get_node_height (node)
+	local height = 0
+	local def = minetest.registered_nodes[node.name]
+
+	if def and type (def.collision_box) == "table" then
+		if def.collision_box.type and def.collision_box.type == "regular" then
+			height = 1
+
+		else
+			for _, box in pairs (def.collision_box) do
+				if type (box) == "table" then
+					if type (box[5]) == "number" then
+						height = box[5]
+					else
+						for _, b in ipairs (box) do
+							if type (b[5]) == "number" and b[5] > height then
+								height = b[5]
+							end
+						end
+					end
+				end
+			end
+
+		end
+	end
+
+	return height
+end
+
+
+
+local function get_affected_nodes (floor_list)
+	local list = { }
+	local max_height = 0
+	local protected = false
+
+	for _, fpos in ipairs (floor_list) do
+		for y = 0, max_push, 1 do
+			local npos = vector.add (fpos, { x = 0, y = y, z = 0 })
+			local node = utils.get_far_node (npos)
+
+			if node and node.name ~= "air" then
+				local meta = minetest.get_meta (npos)
+				local timer = minetest.get_node_timer (npos)
+				local h = get_node_height (node) + npos.y - fpos.y - 0.5
+
+				list[#list + 1] =
+				{
+					pos = npos,
+					node = node,
+					meta = (meta and meta:to_table ()),
+					timeout = (timer and timer:get_timeout ()) or 0,
+					elapsed = (timer and timer:get_elapsed ()) or 0
+				}
+
+				if h > max_height then
+					max_height = h
+				end
+
+				if utils.is_protected (npos, nil) then
+					protected = true
+				end
+			end
+		end
+	end
+
+	return list, math.ceil (max_height), protected
+end
+
+
+
+local function get_entity_height (obj, base)
+	local height = 0
+
+	if obj.get_pos then
+		local pos = obj:get_pos ()
+
+		if obj.get_luaentity then
+			local entity = obj:get_luaentity ()
+
+			if entity and entity.name then
+				local def = minetest.registered_entities[entity.name]
+
+				if def and type (def.collisionbox) == "table" and
+					type (def.collisionbox[5]) == "number" then
+
+					height = def.collisionbox[5] + pos.y - base
+				end
+			end
+		end
+
+		local props = obj:get_properties ()
+		if props and props.collisionbox and type (props.collisionbox) == "table" and
+			type (props.collisionbox[5]) == "number" then
+
+			if props.collisionbox[5] > height then
+				height = props.collisionbox[5] + pos.y - base
+			end
+		end
+	end
+
+	return height
+end
+
+
+
+local function get_affected_entities (floor_list)
+	local list = { }
+	local max_height = 0
+
+	for _, fpos in pairs (floor_list) do
+		local min_pos = vector.subtract (fpos, { x = 0.4999, y = 0.4999, z = 0.4999 })
+		local max_pos = vector.add (fpos, { x = 0.4999, y = max_push + 0.4999, z = 0.4999 })
+
+		local objects = minetest.get_objects_in_area (min_pos, max_pos)
+
+		for _, obj in ipairs (objects) do
+			local h = get_entity_height (obj, fpos.y + 0.5)
+
+			list[#list + 1] =
+			{
+				pos = obj:get_pos (),
+				obj = obj
+			}
+
+			if h > max_height then
+				max_height = h
+			end
+		end
+	end
+
+	return list, math.ceil (max_height)
+end
+
+
+
+local function is_obstructed (floor_list, height)
+	for _, fpos in pairs (floor_list) do
+		local npos = vector.add (fpos, { x = 0, y = height, z = 0 })
+
+		if utils.is_protected (npos, nil) then
+			return true
+		end
+
+		local node = utils.get_far_node (npos)
+
+		if node and node.name ~= "air" then
+			local def = minetest.registered_nodes[node.name]
+
+			if not def or not def.buildable_to then
+				return true
+			end
+		end
+	end
+
+	return false
+end
+
+
+
+local function move_entities (list, move, players)
+	for _, entry in ipairs (list) do
+		if entry.obj then
+			if players or not entry.obj:is_player () then
+				local pos = nil
+
+				if entry.obj:is_player () then
+					pos = vector.add (entry.pos, { x = move.x, y = move.y + 0.1, z = move.z })
+				else
+					pos = vector.add (entry.pos, move)
+				end
+
+				if entry.obj.move_to then
+					entry.obj:move_to (pos)
+				elseif entry.set_pos then
+					entry.obj:set_pos (pos)
+				end
+			end
+		end
+	end
+end
+
+
+
+local function update_player_position (list)
+	for _, entry in ipairs (list) do
+		local player = minetest.get_player_by_name (entry.name)
+
+		if player then
+			local pos = player:get_pos ()
+
+			if pos.y < entry.pos.y then
+				pos.y = entry.pos.y + 0.1
+				player:set_pos (pos)
+			end
+		end
+	end
+end
+
+
+
+local function queue_player_update (list, move)
+	local players = { }
+
+	for _, entry in ipairs (list) do
+		if entry.obj and entry.obj:is_player () then
+			players[#players + 1] =
+			{
+				pos = vector.add (entry.pos, move),
+				name = entry.obj:get_player_name ()
+			}
+		end
+	end
+
+	if #players > 0 then
+		minetest.after(0.1, update_player_position, players)
+	end
+end
+
+
+
+local function move_nodes (list, move)
+	if move.y > 0 then
+		for i = #list, 1, -1 do
+			local pos = vector.add (list[i].pos, move)
+
+			minetest.remove_node (list[i].pos)
+			minetest.set_node (pos, list[i].node)
+
+			if list[i].meta then
+				local meta = minetest.get_meta (pos)
+
+				if meta then
+					meta:from_table (list[i].meta)
+				end
+			end
+
+			if list[i].timeout > 0 then
+				timer = minetest.get_node_timer (pos)
+
+				if timer then
+					timer:set (list[i].timeout, list[i].elapsed)
+				end
+			end
+		end
+	else
+		for i = 1, #list, 1 do
+			local pos = vector.add (list[i].pos, move)
+
+			minetest.remove_node (list[i].pos)
+			minetest.set_node (pos, list[i].node)
+
+			if list[i].meta then
+				local meta = minetest.get_meta (pos)
+
+				if meta then
+					meta:from_table (list[i].meta)
+				end
+			end
+
+			if list[i].timeout > 0 then
+				timer = minetest.get_node_timer (pos)
+
+				if timer then
+					timer:set (list[i].timeout, list[i].elapsed)
+				end
+			end
+		end
+	end
+end
+
+
+
+local function check_for_falling (list)
+	for _, pos in ipairs (list) do
+		minetest.check_for_falling (vector.add (pos, { x = 0, y = max_push + 1, z = 0 }))
+	end
+end
+
+
+
+local function movefloor_move (pos, node, rulename)
 	local direction = get_movefloor_direction (rulename)
-	local play_sound = false
 
 	local list =
 	{
@@ -88,68 +364,34 @@ local function movefloor_move (pos, node, rulename, is_sticky)
 
 	find_adjoining_movefloor (pos, list)
 
-	for i = 1, #list do
-		local frontpos = vector.add (list[i], direction)
-		local meta = minetest.get_meta (list[i])
-		local owner = meta:get_string ("owner")
-		local continue = true
+	local nodes, height, protected = get_affected_nodes (list)
 
-		-- ### Step 1: Push nodes in front ###
-		local success, stack, oldstack = mesecon.mvps_push (frontpos, direction, max_push, owner)
-		if not success then
-			if stack == "protected" then
-				meta:set_string ("infotext", "Can't move: protected area on the way")
-			else
-				minetest.get_node_timer (list[i]):start (timer_interval)
-				continue = false
-			end
-		end
-
-		if continue then
-			mesecon.mvps_move_objects (frontpos, direction, oldstack)
-
-			-- ### Step 2: Move the movestone ###
-			minetest.set_node (frontpos, node)
-			local meta2 = minetest.get_meta (frontpos)
-			meta2:set_string ("owner", owner)
-			minetest.remove_node (list[i])
-			mesecon.on_dignode (list[i], node)
-			mesecon.on_placenode (frontpos, node)
-			minetest.get_node_timer (frontpos):start (timer_interval)
-			play_sound = true
-
-			-- ### Step 3: If sticky, pull stack behind ###
-			if is_sticky and direction.y < 0 then
-				local backpos = vector.subtract (list[i], direction)
-				success, stack, oldstack = mesecon.mvps_pull_all (backpos, direction, max_pull, owner)
-				if success then
-					mesecon.mvps_move_objects (backpos, vector.multiply (direction, -1), oldstack, -1)
-				end
-			end
-
-			-- ### Step 4: Let things fall ###
-			minetest.check_for_falling (vector.add (list[i], { x = 0, y = 1, z = 0 }))
-		end
-	end
-
-	if play_sound then
-		minetest.sound_play("movestone", { pos = list[i], max_hear_distance = 20, gain = 0.5 }, true)
-	end
-
-end
-
-
-
-local function on_timer (pos, elapsed)
-	local sourcepos = mesecon.is_powered (pos)
-
-	if not sourcepos then
+	if protected then
 		return
 	end
 
-	local rulename = vector.subtract (sourcepos[1], pos)
+	local entities, h = get_affected_entities (list)
 
-	mesecon.activate (pos, minetest.get_node (pos), rulename, 0)
+	if h > height then
+		height = h
+	end
+
+	if is_obstructed (list, (direction.y > 0 and height + 1) or -1) then
+		return
+	end
+
+	if direction.y > 0 then
+		move_entities (entities, direction, true)
+		move_nodes (nodes, direction)
+		queue_player_update (entities, direction)
+	else
+		move_nodes (nodes, direction)
+		move_entities (entities, direction, false)
+		check_for_falling (list)
+		queue_player_update (entities, direction)
+	end
+
+	minetest.sound_play ("lwmovefloor", { pos = pos, max_hear_distance = 10, gain = 1.0 }, true)
 end
 
 
@@ -164,8 +406,8 @@ local function mesecon_support ()
 			action_on = function (pos, node, rulename)
 				-- do something to turn the effector on
 
-				if rulename and not minetest.get_node_timer (pos):is_started () then
-					movefloor_move (pos, node, rulename, true)
+				if rulename then
+					movefloor_move (pos, node, rulename)
 				end
 			end
 		}
@@ -190,8 +432,6 @@ minetest.register_node("lwcomponents:movefloor", {
 	groups = { cracky = 2 },
 	sounds = default.node_sound_wood_defaults (),
 	mesecons = mesecon_support (),
-
-	on_timer = on_timer,
 })
 
 

player_button.lua

@@ -95,6 +95,7 @@ minetest.register_node ("lwcomponents:player_button", {
 	"lwplayer_button_side.png",
 	"lwplayer_button.png"
 	},
+	use_texture_alpha = "clip",
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
@@ -143,6 +144,7 @@ minetest.register_node ("lwcomponents:player_button_off", {
 	"lwplayer_button_side.png",
 	"lwplayer_button.png"
 	},
+	use_texture_alpha = "clip",
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
@@ -192,6 +194,7 @@ minetest.register_node ("lwcomponents:player_button_on", {
 	"lwplayer_button_side.png",
 	"lwplayer_button_on.png"
 	},
+	use_texture_alpha = "clip",
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
@@ -223,7 +226,9 @@ minetest.register_node ("lwcomponents:player_button_on", {
 	},
 
 	after_destruct = digistuff.remove_receiver,
---	on_rightclick = player_button_push,
+	on_rightclick = function (pos, node, clicker, itemstack, pointed_thing)
+		-- so clicking when depressed doesn't place node
+	end,
 	on_timer = player_button_turnoff,
 })
 

readme.txt

@@ -13,7 +13,7 @@ CC BY-SA 3.0
 
 Version
 =======
-0.1.9
+0.1.26
 
 
 Minetest Version
@@ -28,13 +28,13 @@ default
 
 Optional Dependencies
 =====================
-lwdrops
 mesecons
 digilines
 unifieddyes
 intllib
 hopper
 digistuff
+pipeworks
 
 
 Installation
@@ -59,16 +59,25 @@ Various components for mesecons and digilines.
 *	Puncher, punches players or entities within a given reach.
 *	Player button, sends digilines message with player name.
 *	Breaker, digs the nodes directly in front.
-*	Deployers, places the nodes directly in front.
+*	Deployer, places the nodes directly in front.
+*	Destroyer, automated trash.
 *	Hologram, projects a hologram above the hologram node.
 *	Fan, blows any entity, player or drop in front of the fan.
 *	Conduit, connected in a circuit to move items.
+*	Cannon, shoots an item on command with directional aiming (plus 3 shells).
+*	Double (optionally single) reach pistons and sticky pistons.
 *	Digiswitch, digilines controlled mesecons power.
 *	Movefloor, similar to vertical mesecons movestone.
+*	Camera, takes a representative image.
+*	Storage, indexed storage units.
+*	Hoppers, that are more compatible with this mod.
+*	Force Field Generator, repels players and mobs within a radius.
+*	Mesecons Through Wire, transmits through 1 to 2 solid blocks.
 *	Solid color conductor blocks, same as Solid Color Block but also mesecons
 	and digilines conductor.
 
-To spawn entities from dispensers include the lwcomponents_spawners mod.
+To spawn entities from dispensers and cannons include the
+lwcomponents_spawners mod.
 
 See the docs folder for details on each item.
 
@@ -84,13 +93,16 @@ the relevant mod is loaded.
 The mod supports the following settings:
 
 Spawn mobs
-	Allow dispensers to spawn mobs instead of spawners.
+	Allow dispensers and cannons to spawn mobs instead of spawners.
 	Default: true
 
 Alert handler errors
 	Issue errors when handler's of other mods fail.
 	Default: true
 
+Maximum piston nodes
+	Maximum nodes a piston can push.
+	Default: 15
 
 
 ------------------------------------------------------------------------

settings.lua

@@ -9,6 +9,12 @@ utils.settings.spawn_mobs =
 utils.settings.alert_handler_errors =
 	minetest.settings:get_bool ("lwcomponents_alert_handler_errors", true)
 
+utils.settings.max_piston_nodes =
+	tonumber (minetest.settings:get ("lwcomponents_max_piston_nodes") or 15)
+
+utils.settings.default_stack_max =
+	tonumber (minetest.settings:get ("default_stack_max")) or 99
+
 
 
 --

settingtypes.txt

@@ -1,5 +1,8 @@
-# Allow dispensers to spawn mobs instead of spawners.
+# Allow dispensers and cannons to spawn mobs instead of spawners.
 lwcomponents_spawn_mobs (Spawn mobs) bool true
 
 # Issue errors when handler's of other mods fail.
 lwcomponents_alert_handler_errors (Alert handler errors) bool true
+
+# Maximum nodes a piston can push.
+lwcomponents_max_piston_nodes (Maximum piston nodes) int 15