Add files via upload

breaker.lua

@@ -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 +1,452 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported then
+
+
+
+local function is_drop (obj)
+	if obj then
+		local entity = obj.get_luaentity and obj:get_luaentity ()
+
+		return (entity and entity.name and entity.name == "__builtin:item")
+	end
+
+	return false
+end
+
+
+
+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 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.lua

@@ -395,7 +395,7 @@ 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)
 
 	meta:set_string ("sensitive", "true")
@@ -407,6 +407,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	inv:set_width ("main", 1)
 
 	meta:set_string ("formspec", get_formspec (pos))
+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
@@ -415,7 +422,7 @@ 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)
@@ -424,6 +431,8 @@ local function after_place_node_locked (pos, placer, itemstack, pointed_thing)
 		meta:set_string ("infotext", "Cannon (owned by "..placer:get_player_name ()..")")
 	end
 
+	utils.pipeworks_after_place (pos)
+
 	-- If return true no item is taken from itemstack
 	return false
 end
@@ -838,6 +847,106 @@ 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 },
+
+			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 cannon_groups = { cracky = 3 }
+if utils.pipeworks_supported then
+	cannon_groups.tubedevice = 1
+	cannon_groups.tubedevice_receiver = 1
+end
+
+
+
 minetest.register_node("lwcomponents:cannon_blank", {
 	description = S("Cannon blank"),
 	drawtype = "airlike",
@@ -917,7 +1026,7 @@ minetest.register_node("lwcomponents:cannon", {
 	wield_image = "lwcannon_item.png",
 	inventory_image = "lwcannon_item.png",
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (cannon_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "light",
 	paramtype2 = "facedir",
@@ -928,12 +1037,14 @@ minetest.register_node("lwcomponents:cannon", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_construct = on_construct,
 	on_destruct = on_destruct,
 	on_place = on_place,
 	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_rightclick = on_rightclick,
@@ -979,7 +1090,7 @@ minetest.register_node("lwcomponents:cannon_locked", {
 	wield_image = "lwcannon_item.png",
 	inventory_image = "lwcannon_item.png",
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (cannon_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "light",
 	paramtype2 = "facedir",
@@ -990,12 +1101,14 @@ minetest.register_node("lwcomponents:cannon_locked", {
 
 	mesecons = mesecon_support (),
 	digiline = digilines_support (),
+	tube = pipeworks_support (),
 
 	on_construct = on_construct,
 	on_destruct = on_destruct,
 	on_place = on_place_locked,
 	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_rightclick = on_rightclick,

change.log

@@ -74,3 +74,64 @@ v0.1.12
 *	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.

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

@@ -12,6 +12,10 @@ local conduit_interval = 1.0
 local conduit_connections = utils.connections:new (mod_storage, "conduit_connections")
 
 
+-- forward declare
+local run_initialize_forward = nil
+
+
 
 local function get_target_list (pos)
 	local tlist = conduit_connections:get_connected_ids (pos)
@@ -62,15 +66,18 @@ 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 tmeta = minetest.get_meta (transfer_data[slot].pos)
+				local tnode = utils.get_far_node (transfer_data[slot].pos)
 
-				if tmeta then
-					local tinv = tmeta:get_inventory ()
+				if tnode and (tnode.name == "lwcomponents:conduit" or
+								  tnode.name == "lwcomponents:conduit_locked") then
+					local tmeta = minetest.get_meta (transfer_data[slot].pos)
 
-					if tinv then
-						tinv:add_item ("main", item)
+					if tmeta then
+						local tinv = tmeta:get_inventory ()
 
-						--send_conduit_message (pos, target, slot)
+						if tinv then
+							tinv:add_item ("main", item)
+						end
 					end
 				end
 			end
@@ -138,7 +145,7 @@ end
 
 
 
-local function delivered_earliest (pos)
+local function deliver_earliest (pos)
 	local meta = minetest.get_meta (pos)
 
 	if meta then
@@ -194,7 +201,8 @@ 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 +218,11 @@ 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_forward (pos)
 		end
 	end
 end
@@ -292,8 +296,6 @@ 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
@@ -309,20 +311,42 @@ end
 
 
 
-local function run_conduit (pos)
+local function run_conduit (pos, id)
+	local node = utils.get_far_node (pos)
+
+	if node and (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
+	end
+end
+
+
+
+local function run_initialize (pos)
 	local meta = minetest.get_meta (pos)
-	local automatic = false
 
 	if meta then
-		automatic = meta:get_string ("automatic") == "true"
+		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
-
-	if automatic then
-		send_to_target (pos)
-	end
-
-	return run_deliveries (pos) or automatic
 end
+run_initialize_forward = run_initialize
 
 
 
@@ -362,7 +386,7 @@ 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]"..
@@ -374,6 +398,7 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 	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 ()
 
@@ -382,6 +407,13 @@ local function after_place_node (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("transfer", 32)
 	inv:set_width ("transfer", 8)
+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
@@ -390,7 +422,7 @@ 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 +431,8 @@ 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
@@ -492,11 +526,7 @@ 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 not timer:is_started () then
-				timer:start (conduit_interval)
-			end
+			run_initialize (pos)
 		end
 	end
 end
@@ -592,12 +622,6 @@ end
 
 
 
-local function on_timer (pos, elapsed)
-	return run_conduit (pos)
-end
-
-
-
 local function digilines_support ()
 	if utils.digilines_supported then
 		return
@@ -671,12 +695,112 @@ 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" },
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -687,14 +811,15 @@ 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
 })
 
@@ -705,7 +830,7 @@ minetest.register_node("lwcomponents:conduit_locked", {
 	drawtype = "glasslike_framed",
 	tiles = { "lwconduit_edge.png", "lwconduit.png" },
 	is_ground_content = false,
-	groups = { cracky = 3 },
+	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
 	paramtype = "none",
 	param1 = 0,
@@ -716,14 +841,15 @@ 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
 })
 
@@ -745,4 +871,60 @@ utils.hopper_add_container({
 
 
 
+-- 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
+			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 (9) / 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)
+
+
+
 end -- utils.digilines_supported or utils.mesecon_supported

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

@@ -23,6 +23,44 @@ minetest.register_craft( {
 })
 
 
+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:cannon_shell 10",
 	recipe = {
@@ -49,7 +87,21 @@ minetest.register_craft( {
 		{ "default:iron_lump", "default:coalblock" },
 	},
 })
-end
+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
 
 
 
@@ -218,6 +270,26 @@ minetest.register_craft( {
 	},
 })
 
+
+minetest.register_craft({
+	output = "lwcomponents:piston 2",
+	recipe = {
+		{ "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:piston_sticky",
+	recipe = {
+		{"group:sapling"},
+		{"lwcomponents:piston"},
+	}
+})
+
+
 end -- utils.digilines_supported or utils.mesecon_supported
 
 
@@ -261,6 +333,24 @@ 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
 
 
@@ -280,7 +370,7 @@ 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",
@@ -291,7 +381,7 @@ minetest.register_craft ({
    }
 })
 
-end -- utils.mesecon_supported and mesecon.mvps_push
+end -- utils.mesecon_supported
 
 
 

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
+
+		return true
 	end
 
-	return true
+	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,

detector.lua

@@ -130,7 +130,7 @@ 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 +165,7 @@ 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 +410,6 @@ 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")

dispenser.lua

@@ -182,7 +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"..
@@ -200,6 +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
@@ -208,7 +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)
@@ -217,6 +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
@@ -412,12 +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,
@@ -428,10 +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
 })
@@ -443,7 +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,
@@ -454,10 +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

@@ -5,7 +5,8 @@ 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.
+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)

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

@@ -10,10 +10,13 @@ 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.
 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.
 
 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/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/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/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 +1,31 @@
+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.
+
+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 +1,102 @@
+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.
+
+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.
+
+
+"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 in the following manner: from a custom
+			description in metadata; if none then the short description from
+			the item's definition; if none then the description from the item's
+			definition; 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
 })

explode.lua

@@ -70,21 +70,21 @@ end
 
 
 
-local function is_same_item (stack1, stack2)
-	local copy1 = ItemStack (stack1)
-	local copy2 = ItemStack (stack2)
+--local function is_same_item (stack1, stack2)
+	--local copy1 = ItemStack (stack1)
+	--local copy2 = ItemStack (stack2)
 
-	if copy1 and copy2 then
-		copy1:set_count (1)
-		copy2:set_count (1)
+	--if copy1 and copy2 then
+		--copy1:set_count (1)
+		--copy2:set_count (1)
 
-		if copy1:to_string () == copy2:to_string () then
-			return true
-		end
-	end
+		--if copy1:to_string () == copy2:to_string () then
+			--return true
+		--end
+	--end
 
-	return false
-end
+	--return false
+--end
 
 
 
@@ -143,7 +143,7 @@ local function add_drops (drops, drop)
 			if item and not item:is_empty () then
 				local existing = drops[item:get_name ()]
 
-				if existing and is_same_item (item, existing) then
+				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
@@ -228,48 +228,74 @@ end
 local function explode_entities (pos, radius, damage, drops)
 	local objs = minetest.get_objects_inside_radius (pos, radius)
 
-	for _, obj in pairs (objs) do
-		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)
+	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
+			if entity_is_drop (obj) then
 				obj:add_velocity (vel)
 
-				obj:set_hp (obj:get_hp() - ent_damage, reason)
+			elseif not obj:get_armor_groups ().immortal then
 
-			else
-				local luaobj = obj:get_luaentity()
+				local ent_damage = ((radius - dist) / radius * damage / 2) + (damage / 2)
+				local reason = { type = "set_hp", from = "lwcomponents" }
 
-				-- object might have disappeared somehow
-				if luaobj then
-					local do_damage = true
-					local do_knockback = true
-					local entity_drops = {}
-					local objdef = minetest.registered_entities[luaobj.name]
+				if obj:is_player() then
+					local parent = obj:get_attach ()
 
-					if objdef and objdef.on_blast then
-						do_damage, do_knockback, entity_drops = objdef.on_blast (luaobj, ent_damage)
+					if parent then
+						obj:set_detach ()
 					end
 
-					if do_knockback then
-						obj:add_velocity (vel)
-					end
+					obj:add_velocity (vel)
+					obj:set_hp (obj:get_hp () - ent_damage, reason)
 
-					if do_damage then
-						obj:set_hp (obj:get_hp() - ent_damage, reason)
-					end
+				else
+					local luaobj = obj:get_luaentity ()
 
-					add_drops (drops, entity_drops)
+					-- 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
@@ -404,7 +430,7 @@ function utils.boom (pos,									-- center of explosion
 	if not utils.is_protected (pos, nil) then
 		local center_node = utils.get_far_node (pos)
 
-		if not node or node.name == "air" then
+		if not center_node or center_node.name == "air" then
 			center_free = true
 		end
 	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)

init.lua

@@ -1,4 +1,4 @@
-local version = "0.1.12"
+local version = "0.1.23"
 local mod_storage = minetest.get_mod_storage ()
 
 
@@ -34,6 +34,10 @@ loadfile (modpath.."/fan.lua") (utils)
 loadfile (modpath.."/conduit.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.."/extras.lua") (utils)
 loadfile (modpath.."/digiswitch.lua") (utils)
 loadfile (modpath.."/movefloor.lua") (utils)

license.txt

@@ -13,6 +13,8 @@ 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.
+
 
 
 lwsiren-buzz.ogg
@@ -59,6 +61,16 @@ 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.
+
+
+
 Media license
 -------------
 siren images derived from images from https://openclipart.org, which is
@@ -67,6 +79,12 @@ 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),
@@ -74,6 +92,8 @@ 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/piston_normal_1.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_normal_1.mtl
+o cube
+v 0.500000 -0.500000 0.500000
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+usemtl m_7
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+f 1/1/1 2/2/1 3/3/1 4/4/1
+f 5/5/2 1/6/2 4/7/2 6/8/2
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+f 2/21/6 1/1/6 5/22/6 7/23/6
+o cube.000
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+usemtl m_7
+s 1
+f 9/24/7 10/25/7 11/26/7 12/27/7
+f 13/28/8 9/29/8 12/30/8 14/31/8
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+f 16/40/11 14/41/11 12/42/11 11/43/11
+f 10/44/12 9/45/12 13/46/12 15/47/12
+o cube.001
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+usemtl m_7
+s 1
+f 17/48/13 18/49/13 19/50/13 20/51/13
+f 21/52/14 17/53/14 20/54/14 22/55/14
+f 23/56/15 21/57/15 22/58/15 24/59/15
+f 18/60/16 23/61/16 24/62/16 19/63/16
+f 24/64/17 22/65/17 20/66/17 19/67/17
+f 18/68/18 17/69/18 21/70/18 23/71/18

models/piston_normal_2.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_normal_2.mtl
+o cube.011
+v 0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 -0.312500
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+usemtl m_0.001
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+f 1/1/1 2/2/1 3/3/1 4/4/1
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+f 8/17/5 6/18/5 4/19/5 3/20/5
+f 2/21/6 1/1/6 5/22/6 7/23/6
+o cube.012
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models/piston_sticky_1.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_sticky_1.mtl
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+vt 0.666667 0.333333
+vt 1.000000 0.333333
+vt 1.000000 0.666667
+vt 0.666667 0.666667
+vn 0.0000 -1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 0.0000 1.0000
+usemtl m_7.001
+s 1
+f 9/24/7 10/25/7 11/26/7 12/27/7
+f 13/28/8 9/29/8 12/30/8 14/31/8
+f 15/32/9 13/33/9 14/34/9 16/35/9
+f 10/36/10 15/37/10 16/38/10 11/39/10
+f 16/40/11 14/41/11 12/42/11 11/43/11
+f 10/44/12 9/45/12 13/46/12 15/47/12
+o cube.004
+v 0.125000 -0.125000 0.375000
+v -0.125000 -0.125000 0.375000
+v -0.125000 -0.125000 -1.375000
+v 0.125000 -0.125000 -1.375000
+v 0.125000 0.125000 0.375000
+v 0.125000 0.125000 -1.375000
+v -0.125000 0.125000 0.375000
+v -0.125000 0.125000 -1.375000
+vt 0.125000 0.354167
+vt 0.208333 0.354167
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.354167
+vt 0.208333 0.354167
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.354167
+vt 0.208333 0.354167
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.354167
+vt 0.208333 0.354167
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.458333 0.130208
+vt 0.541667 0.130208
+vt 0.541667 0.213542
+vt 0.458333 0.213542
+vt 0.791667 0.463542
+vt 0.875000 0.463542
+vt 0.875000 0.546875
+vt 0.791667 0.546875
+vn 0.0000 -1.0000 -0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 0.0000 1.0000
+usemtl m_7.001
+s 1
+f 17/48/13 18/49/13 19/50/13 20/51/13
+f 21/52/14 17/53/14 20/54/14 22/55/14
+f 23/56/15 21/57/15 22/58/15 24/59/15
+f 18/60/16 23/61/16 24/62/16 19/63/16
+f 24/64/17 22/65/17 20/66/17 19/67/17
+f 18/68/18 17/69/18 21/70/18 23/71/18

models/piston_sticky_2.obj

@@ -0,0 +1,143 @@
+# Blender v2.82 (sub 7) OBJ File: ''
+# www.blender.org
+mtllib piston_sticky_2.mtl
+o cube.008
+v 0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 -0.312500
+v 0.500000 -0.500000 -0.312500
+v 0.500000 0.500000 0.500000
+v 0.500000 0.500000 -0.312500
+v -0.500000 0.500000 0.500000
+v -0.500000 0.500000 -0.312500
+vt 0.666667 0.666667
+vt 1.000000 0.666667
+vt 1.000000 0.937500
+vt 0.666667 0.937500
+vt 0.666667 0.666667
+vt 1.000000 0.666667
+vt 1.000000 0.937500
+vt 0.666667 0.937500
+vt 0.666667 0.666667
+vt 1.000000 0.666667
+vt 1.000000 0.937500
+vt 0.666667 0.937500
+vt 0.666667 0.666667
+vt 1.000000 0.666667
+vt 1.000000 0.937500
+vt 0.666667 0.937500
+vt 0.333333 0.333333
+vt 0.666667 0.333333
+vt 0.666667 0.666667
+vt 0.333333 0.666667
+vt 0.333333 0.666667
+vt 0.666667 1.000000
+vt 0.333333 1.000000
+vn 0.0000 -1.0000 0.0000
+vn 1.0000 -0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn -1.0000 -0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 -0.0000 1.0000
+usemtl m_0
+s 1
+f 1/1/1 2/2/1 3/3/1 4/4/1
+f 5/5/2 1/6/2 4/7/2 6/8/2
+f 7/9/3 5/10/3 6/11/3 8/12/3
+f 2/13/4 7/14/4 8/15/4 3/16/4
+f 8/17/5 6/18/5 4/19/5 3/20/5
+f 2/21/6 1/1/6 5/22/6 7/23/6
+o cube.009
+v 0.500000 -0.500000 -2.312500
+v -0.500000 -0.500000 -2.312500
+v -0.500000 -0.500000 -2.500000
+v 0.500000 -0.500000 -2.500000
+v 0.500000 0.500000 -2.312500
+v 0.500000 0.500000 -2.500000
+v -0.500000 0.500000 -2.312500
+v -0.500000 0.500000 -2.500000
+vt 0.666667 0.937500
+vt 1.000000 0.937500
+vt 1.000000 1.000000
+vt 0.666667 1.000000
+vt 0.666667 0.937500
+vt 1.000000 0.937500
+vt 1.000000 1.000000
+vt 0.666667 1.000000
+vt 0.666667 0.937500
+vt 1.000000 0.937500
+vt 1.000000 1.000000
+vt 0.666667 1.000000
+vt 0.666667 0.937500
+vt 1.000000 0.937500
+vt 1.000000 1.000000
+vt 0.666667 1.000000
+vt 0.666667 0.000000
+vt 1.000000 0.000000
+vt 1.000000 0.333333
+vt 0.666667 0.333333
+vt 0.666667 0.333333
+vt 1.000000 0.333333
+vt 1.000000 0.666667
+vt 0.666667 0.666667
+vn 0.0000 -1.0000 -0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 0.0000 1.0000
+usemtl m_0
+s 1
+f 9/24/7 10/25/7 11/26/7 12/27/7
+f 13/28/8 9/29/8 12/30/8 14/31/8
+f 15/32/9 13/33/9 14/34/9 16/35/9
+f 10/36/10 15/37/10 16/38/10 11/39/10
+f 16/40/11 14/41/11 12/42/11 11/43/11
+f 10/44/12 9/45/12 13/46/12 15/47/12
+o cube.010
+v 0.125000 -0.125000 0.375000
+v -0.125000 -0.125000 0.375000
+v -0.125000 -0.125000 -2.375000
+v 0.125000 -0.125000 -2.375000
+v 0.125000 0.125000 0.375000
+v 0.125000 0.125000 -2.375000
+v -0.125000 0.125000 0.375000
+v -0.125000 0.125000 -2.375000
+vt 0.125000 0.020833
+vt 0.208333 0.020833
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.020833
+vt 0.208333 0.020833
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.020833
+vt 0.208333 0.020833
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.125000 0.020833
+vt 0.208333 0.020833
+vt 0.208333 0.979167
+vt 0.125000 0.979167
+vt 0.562500 0.229167
+vt 0.458333 0.229167
+vt 0.458333 0.125000
+vt 0.562500 0.125000
+vt 0.875000 0.458333
+vt 0.791667 0.458333
+vt 0.791667 0.541667
+vt 0.875000 0.541667
+vn 0.0000 -1.0000 -0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 0.0000 0.0000 1.0000
+usemtl m_0
+s 1
+f 17/48/13 18/49/13 19/50/13 20/51/13
+f 21/52/14 17/53/14 20/54/14 22/55/14
+f 23/56/15 21/57/15 22/58/15 24/59/15
+f 18/60/16 23/61/16 24/62/16 19/63/16
+f 24/64/17 22/65/17 20/66/17 19/67/17
+f 18/68/18 17/69/18 21/70/18 23/71/18

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,
 })
 
 

pistons.lua

@@ -0,0 +1,970 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported or utils.mesecon_supported then
+
+
+
+local piston_interval = 0.2
+
+
+
+local function direction_vector (node)
+	local axis = math.floor (node.param2 / 4)
+	local rotate = node.param2 % 4
+	local vec = { x = 0, y = 0, z = 0 }
+
+	if rotate == 0 then
+		vec = { x = 0, y = 0, z = -1 }
+	elseif rotate == 1 then
+		vec = { x = -1, y = 0, z = 0 }
+	elseif rotate == 2 then
+		vec = { x = 0, y = 0, z = 1 }
+	elseif rotate == 3 then
+		vec = { x = 1, y = 0, z = 0 }
+	end
+
+	if axis == 1 then
+		vec = vector.rotate (vec, { x = math.pi / -2, y = 0, z = 0 })
+	elseif axis == 2 then
+		vec = vector.rotate (vec, { x = math.pi / 2, y = 0, z = 0 })
+	elseif axis == 3 then
+		vec = vector.rotate (vec, { x = 0, y = 0, z = math.pi / 2 })
+	elseif axis == 4 then
+		vec = vector.rotate (vec, { x = 0, y = 0, z = math.pi / -2 })
+	elseif axis == 5 then
+		vec = vector.rotate (vec, { x = math.pi, y = 0, z = 0 })
+	end
+
+	return vec
+end
+
+
+
+local function push_entities (pos, vec)
+	local tpos = vector.add (pos, vec)
+	local tnode = utils.get_far_node (tpos)
+	local can_move = false
+
+	if tnode then
+		if tnode.name == "air" then
+			can_move = true
+		else
+			local tdef = utils.find_item_def (tnode.name)
+
+			can_move = tdef and not tdef.walkable
+		end
+	end
+
+	if can_move then
+		local object = minetest.get_objects_inside_radius (pos, 1.5)
+
+		for j = 1, #object do
+			if object[j].get_pos then
+				local opos = object[j]:get_pos ()
+
+				if opos.x > (pos.x - 0.5) and opos.x < (pos.x + 0.5) and
+					opos.z > (pos.z - 0.5) and opos.z < (pos.z + 0.5) and
+					opos.y > (pos.y - 0.5) and opos.y < (pos.y + 0.5) then
+
+					object[j]:set_pos (vector.add (opos, vec))
+				end
+			end
+		end
+	end
+end
+
+
+
+local function push_nodes (pos, extent)
+	local node = utils.get_far_node (pos)
+
+	if node then
+		local vec = direction_vector (node)
+		local last = vector.add (pos, vector.multiply (vec, extent))
+		local maxnodes = utils.settings.max_piston_nodes + 1
+		local count = 0
+
+		for i = 1, maxnodes do
+			local tnode = utils.get_far_node (last)
+
+			if not tnode then
+				return false
+			end
+
+			local tdef = utils.find_item_def (tnode.name)
+
+			if tnode.name == "air" or (tdef and not tdef.walkable) then
+				count = i - 1
+				break
+			end
+
+			if i == maxnodes then
+				return false
+			end
+
+			last = vector.add (last, vec)
+		end
+
+		push_entities (last, vec)
+
+		for i = 1, count, 1 do
+			local cpos = vector.subtract (last, vec)
+			local cnode = utils.get_far_node (cpos)
+			local cmeta = minetest.get_meta (cpos)
+
+			if not cnode or not cmeta then
+				return false
+			end
+
+			local tmeta = cmeta:to_table ()
+			local ctimer = minetest.get_node_timer (cpos)
+			local ctimeout = (ctimer and ctimer:get_timeout ()) or 0
+			local celapsed = (ctimer and ctimer:get_elapsed ()) or 0
+
+			push_entities (cpos, vec)
+
+			minetest.remove_node (cpos)
+			minetest.set_node (last, cnode)
+
+			if tmeta then
+				cmeta = minetest.get_meta (last)
+
+				if not cmeta then
+					return false
+				end
+
+				cmeta:from_table (tmeta)
+			end
+
+			if ctimeout > 0 then
+				ctimer = minetest.get_node_timer (last)
+
+				if ctimer then
+					ctimer:set (ctimeout, celapsed)
+				end
+			end
+
+			last = cpos
+		end
+	end
+
+	return true
+end
+
+
+
+local function pull_node (pos, extent)
+	local node = utils.get_far_node (pos)
+
+	if node then
+		local vec = direction_vector (node)
+		local cpos = vector.add (pos, vector.multiply (vec, extent))
+		local cnode = utils.get_far_node (cpos)
+		local cdef = cnode and utils.find_item_def (cnode.name)
+
+		if cnode and cnode.name ~= "air" and cdef and cdef.walkable then
+
+			local cmeta = minetest.get_meta (cpos)
+
+			if cmeta then
+				local tpos = vector.subtract (cpos, vec)
+				local tmeta = cmeta:to_table ()
+				local ctimer = minetest.get_node_timer (cpos)
+				local ctimeout = (ctimer and ctimer:get_timeout ()) or 0
+				local celapsed = (ctimer and ctimer:get_elapsed ()) or 0
+
+				minetest.remove_node (cpos)
+				minetest.set_node (tpos, cnode)
+
+				if tmeta then
+					cmeta = minetest.get_meta (tpos)
+
+					if cmeta then
+						cmeta:from_table (tmeta)
+					end
+				end
+
+				if ctimeout > 0 then
+					ctimer = minetest.get_node_timer (tpos)
+
+					if ctimer then
+						ctimer:set (ctimeout, celapsed)
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function place_blank (pos, extent)
+	local node = utils.get_far_node (pos)
+
+	if node then
+		local vec = direction_vector (node)
+		local blank_pos = vector.add (pos, vector.multiply (vec, extent))
+		local blank_node = utils.get_far_node (blank_pos)
+		local blank_def = blank_node and utils.find_item_def (blank_node.name)
+
+		if blank_node and blank_node.name == "air" or
+			(blank_def and not blank_def.walkable) then
+
+			minetest.set_node (blank_pos,
+									 {
+										name = "lwcomponents:piston_blank_"..tostring (extent),
+										param2 = node.param2
+									 })
+		end
+	end
+end
+
+
+
+local function remove_blank (pos, extent)
+	local node = utils.get_far_node (pos)
+
+	if node then
+		local vec = direction_vector (node)
+		local blank_pos = vector.add (pos, vector.multiply (vec, extent))
+		local blank_node = utils.get_far_node (blank_pos)
+
+		if blank_node and
+			blank_node.name == "lwcomponents:piston_blank_"..tostring (extent) then
+
+			minetest.remove_node (blank_pos)
+		end
+	end
+end
+
+
+
+local function extend_piston (pos, extent)
+	local node = utils.get_far_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		extent = math.max (math.min (tonumber (extent or 2), meta:get_int ("max_extent")), 0)
+
+		if node.name == "lwcomponents:piston" then
+			if extent ~= 0 then
+				if push_nodes (pos, 1) then
+					node.name = "lwcomponents:piston_1"
+					minetest.swap_node (pos, node)
+					place_blank (pos, 1)
+					minetest.sound_play ("lwpiston_extend",
+												{
+													pos = pos,
+													max_hear_distance = 20,
+													gain = 0.3
+												},
+												true)
+
+					if extent == 2 then
+						meta:set_int ("extent", 2)
+						minetest.get_node_timer (pos):start (piston_interval)
+
+						return true
+					end
+				end
+			end
+
+		elseif node.name == "lwcomponents:piston_1" then
+			if extent == 0 then
+				remove_blank (pos, 1)
+				node.name = "lwcomponents:piston"
+				minetest.swap_node (pos, node)
+				minetest.sound_play ("lwpiston_retract",
+											{
+												pos = pos,
+												max_hear_distance = 20,
+												gain = 0.3
+											},
+											true)
+
+			elseif extent == 2 then
+				if push_nodes (pos, 2) then
+					node.name = "lwcomponents:piston_2"
+					minetest.swap_node (pos, node)
+					place_blank (pos, 2)
+					minetest.sound_play ("lwpiston_extend",
+												{
+													pos = pos,
+													max_hear_distance = 20,
+													gain = 0.3
+												},
+												true)
+				end
+			end
+
+		elseif node.name == "lwcomponents:piston_2" then
+			if extent ~= 2 then
+				remove_blank (pos, 2)
+				node.name = "lwcomponents:piston_1"
+				minetest.swap_node (pos, node)
+				minetest.sound_play ("lwpiston_retract",
+											{
+												pos = pos,
+												max_hear_distance = 20,
+												gain = 0.3
+											},
+											true)
+
+				if extent == 0 then
+					meta:set_int ("extent", 0)
+					minetest.get_node_timer (pos):start (piston_interval)
+
+					return true
+				end
+			end
+
+		elseif node.name == "lwcomponents:piston_sticky" then
+			if extent ~= 0 then
+				if push_nodes (pos, 1) then
+					node.name = "lwcomponents:piston_sticky_1"
+					minetest.swap_node (pos, node)
+					place_blank (pos, 1)
+					minetest.sound_play ("lwpiston_extend",
+												{
+													pos = pos,
+													max_hear_distance = 20,
+													gain = 0.3
+												},
+												true)
+
+					if extent == 2 then
+						meta:set_int ("extent", 2)
+						minetest.get_node_timer (pos):start (piston_interval)
+
+						return true
+					end
+				end
+			end
+
+
+		elseif node.name == "lwcomponents:piston_sticky_1" then
+			if extent == 0 then
+				remove_blank (pos, 1)
+				node.name = "lwcomponents:piston_sticky"
+				minetest.swap_node (pos, node)
+				pull_node (pos, 2)
+				minetest.sound_play ("lwpiston_retract",
+											{
+												pos = pos,
+												max_hear_distance = 20,
+												gain = 0.3
+											},
+											true)
+
+			elseif extent == 2 then
+				if push_nodes (pos, 2) then
+					node.name = "lwcomponents:piston_sticky_2"
+					minetest.swap_node (pos, node)
+					place_blank (pos, 2)
+					minetest.sound_play ("lwpiston_extend",
+												{
+													pos = pos,
+													max_hear_distance = 20,
+													gain = 0.3
+												},
+												true)
+				end
+			end
+
+		elseif node.name == "lwcomponents:piston_sticky_2" then
+			if extent ~= 2 then
+				remove_blank (pos, 2)
+				node.name = "lwcomponents:piston_sticky_1"
+				minetest.swap_node (pos, node)
+				pull_node (pos, 3)
+				minetest.sound_play ("lwpiston_retract",
+											{
+												pos = pos,
+												max_hear_distance = 20,
+												gain = 0.3
+											},
+											true)
+
+				if extent == 0 then
+					meta:set_int ("extent", 0)
+					minetest.get_node_timer (pos):start (piston_interval)
+
+					return true
+				end
+			end
+		end
+	end
+
+	return false
+end
+
+
+
+local function on_destruct_1 (pos)
+	remove_blank (pos, 1)
+end
+
+
+
+local function on_destruct_2 (pos)
+	remove_blank (pos, 2)
+	remove_blank (pos, 1)
+end
+
+
+
+local function on_place (itemstack, placer, pointed_thing)
+	local param2 = 0
+
+	if placer and placer:is_player () then
+		param2 = minetest.dir_to_facedir (placer:get_look_dir (), true)
+	elseif pointed_thing and pointed_thing.type == "node" then
+		param2 = minetest.dir_to_facedir (vector.subtract (pointed_thing.under, pointed_thing.above), true)
+	end
+
+	return minetest.item_place (itemstack, placer, pointed_thing, param2)
+end
+
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+	local spec =
+	"size[7,3.3]"..
+	"field[1,1;4,2;channel;Channel;${channel}]"..
+	"button_exit[4.6,1.15;1.5,1;submit;Set]"..
+	"checkbox[1,2;single;Single move;false]"
+
+	meta:set_string ("formspec", spec)
+	meta:set_int ("max_extent", 2)
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function on_receive_fields (pos, formname, fields, sender)
+	if not utils.can_interact_with_node (pos, sender) then
+		return
+	end
+
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		if fields.submit then
+			meta:set_string ("channel", fields.channel)
+		end
+
+		if fields.single then
+			if fields.single == "true" then
+				local spec =
+				"size[7,3.3]"..
+				"field[1,1;4,2;channel;Channel;${channel}]"..
+				"button_exit[4.6,1.15;1.5,1;submit;Set]"..
+				"checkbox[1,2;single;Single move;true]"
+
+				meta:set_int ("max_extent", 1)
+				meta:set_string ("formspec", spec)
+			else
+				local spec =
+				"size[7,3.3]"..
+				"field[1,1;4,2;channel;Channel;${channel}]"..
+				"button_exit[4.6,1.15;1.5,1;submit;Set]"..
+				"checkbox[1,2;single;Single move;false]"
+
+				meta:set_int ("max_extent", 2)
+				meta:set_string ("formspec", spec)
+			end
+		end
+	end
+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 can_dig (pos, player)
+	if not utils.can_interact_with_node (pos, player) then
+		return false
+	end
+
+	return true
+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 on_timer (pos, elapsed)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		return extend_piston (pos, meta:get_int ("extent"))
+	end
+
+	return false
+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 then
+							if type (msg) == "string" then
+								local m = { }
+								for w in string.gmatch(msg, "[^%s]+") do
+									m[#m + 1] = w
+								end
+
+								if m[1] == "extend" then
+									extend_piston (pos, m[2])
+
+								elseif m[1] == "retract" then
+									extend_piston (pos, 0)
+
+								elseif m[1] == "single" then
+									local spec =
+									"size[7,3.3]"..
+									"field[1,1;4,2;channel;Channel;${channel}]"..
+									"button_exit[4.6,1.15;1.5,1;submit;Set]"..
+									"checkbox[1,2;single;Single move;true]"
+
+									meta:set_int ("max_extent", 1)
+									meta:set_string ("formspec", spec)
+
+								elseif m[1] == "double" then
+									local spec =
+									"size[7,3.3]"..
+									"field[1,1;4,2;channel;Channel;${channel}]"..
+									"button_exit[4.6,1.15;1.5,1;submit;Set]"..
+									"checkbox[1,2;single;Single move;false]"
+
+									meta:set_int ("max_extent", 2)
+									meta:set_string ("formspec", spec)
+
+								end
+							end
+						end
+					end
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+local function mesecon_support ()
+	if utils.mesecon_supported then
+		return
+		{
+			effector =
+			{
+				rules = function (node)
+					local dir = vector.multiply (minetest.facedir_to_dir (node.param2), -1)
+					local rules = table.copy (utils.mesecon_default_rules)
+
+					for i = #rules, 1, -1 do
+						if vector.equals (rules[i], dir) then
+							table.remove (rules, i)
+						end
+					end
+
+					return rules
+				end,
+
+				action_on = function (pos, node)
+					-- do something to turn the effector on
+					extend_piston (pos, 2)
+				end,
+
+				action_off = function (pos, node)
+					-- do something to turn the effector off
+					extend_piston (pos, 0)
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+minetest.register_node("lwcomponents:piston_blank_1", {
+	description = S("Piston blank"),
+	drawtype = "airlike",
+	light_source = 0,
+	sunlight_propagates = true,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	climbable = false,
+	buildable_to = false,
+	floodable = false,
+	is_ground_content = false,
+	drop = "",
+	groups = { not_in_creative_inventory = 1 },
+	paramtype = "light",
+	-- unaffected by explosions
+	on_blast = function() end,
+})
+
+
+
+minetest.register_node("lwcomponents:piston_blank_2", {
+	description = S("Piston blank"),
+	drawtype = "airlike",
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -0.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -0.5, 0.5, 0.5, -0.3125},
+		},
+	},
+	light_source = 0,
+	sunlight_propagates = true,
+	walkable = true,
+	pointable = false,
+	diggable = false,
+	climbable = false,
+	buildable_to = false,
+	floodable = false,
+	is_ground_content = false,
+	drop = "",
+	groups = { not_in_creative_inventory = 1 },
+	paramtype = "light",
+	-- unaffected by explosions
+	on_blast = function() end,
+})
+
+
+
+minetest.register_node("lwcomponents:piston", {
+	description = S("Double Piston"),
+	tiles = { "lwcomponents_piston_top.png", "lwcomponents_piston_bottom.png",
+				 "lwcomponents_piston_right.png", "lwcomponents_piston_left.png",
+				 "lwcomponents_piston_base.png", "lwcomponents_piston_pusher.png" },
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_place = on_place,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+minetest.register_node("lwcomponents:piston_1", {
+	description = S("Double Piston"),
+	drawtype = "mesh",
+	mesh = "piston_normal_1.obj",
+	tiles = { "lwcomponents_piston.png" },
+	visual_scale = 1.0,
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -1.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -1.5, 0.5, 0.5, -1.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -1.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -1.5, 0.5, 0.5, -1.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	is_ground_content = false,
+	groups = { cracky = 3 , not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct_1,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+minetest.register_node("lwcomponents:piston_2", {
+	description = S("Double Piston"),
+	drawtype = "mesh",
+	mesh = "piston_normal_2.obj",
+	tiles = { "lwcomponents_piston.png" },
+	visual_scale = 1.0,
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -2.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -2.5, 0.5, 0.5, -2.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -2.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -2.5, 0.5, 0.5, -2.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	is_ground_content = false,
+	groups = { cracky = 3 , not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct_2,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+minetest.register_node("lwcomponents:piston_sticky", {
+	description = S("Double Sticky Piston"),
+	tiles = { "lwcomponents_piston_top.png", "lwcomponents_piston_bottom.png",
+				 "lwcomponents_piston_right.png", "lwcomponents_piston_left.png",
+				 "lwcomponents_piston_base.png", "lwcomponents_piston_pusher_sticky.png" },
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston_sticky",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_place = on_place,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+minetest.register_node("lwcomponents:piston_sticky_1", {
+	description = S("Double Sticky Piston"),
+	drawtype = "mesh",
+	mesh = "piston_sticky_1.obj",
+	tiles = { "lwcomponents_piston.png" },
+	visual_scale = 1.0,
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -1.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -1.5, 0.5, 0.5, -1.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -1.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -1.5, 0.5, 0.5, -1.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	is_ground_content = false,
+	groups = { cracky = 3 , not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston_sticky",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct_1,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+minetest.register_node("lwcomponents:piston_sticky_2", {
+	description = S("Double Sticky Piston"),
+	drawtype = "mesh",
+	mesh = "piston_sticky_2.obj",
+	tiles = { "lwcomponents_piston.png" },
+	visual_scale = 1.0,
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -2.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -2.5, 0.5, 0.5, -2.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {
+			{-0.125, -0.125, -2.4, 0.125, 0.125, 0.4},
+			{-0.5, -0.5, -2.5, 0.5, 0.5, -2.3125},
+			{-0.5, -0.5, -0.3125, 0.5, 0.5, 0.5},
+		},
+	},
+	is_ground_content = false,
+	groups = { cracky = 3 , not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	floodable = false,
+	drop = "lwcomponents:piston_sticky",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct_2,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_rightclick = on_rightclick,
+	on_timer = on_timer
+})
+
+
+
+end -- utils.digilines_supported or utils.mesecon_supported

player_button.lua

@@ -226,7 +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
 =======
-0.1.12
+0.1.23
 
 
 Minetest Version
@@ -28,13 +28,13 @@ default
 
 Optional Dependencies
 =====================
-lwdrops
 mesecons
 digilines
 unifieddyes
 intllib
 hopper
 digistuff
+pipeworks
 
 
 Installation
@@ -64,8 +64,12 @@ Various components for mesecons and digilines.
 *	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.
+*	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.
 
@@ -93,6 +97,9 @@ 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

@@ -3,3 +3,6 @@ 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

through_wire.lua

@@ -0,0 +1,80 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.mesecon_supported then
+
+
+
+local through_wire_get_rules = function (node)
+	local rules = { {x = -1, y = 0, z = 0},
+						 {x =  2, y = 0, z = 0},
+						 {x =  3, y = 0, z = 0} }
+
+	if node.param2 == 2 then
+		rules = mesecon.rotate_rules_left(rules)
+	elseif node.param2 == 3 then
+		rules = mesecon.rotate_rules_right(mesecon.rotate_rules_right(rules))
+	elseif node.param2 == 0 then
+		rules = mesecon.rotate_rules_right(rules)
+	end
+
+	return rules
+end
+
+
+
+mesecon.register_node ("lwcomponents:through_wire", {
+	description = S("Mesecons Through Wire"),
+	drawtype = "nodebox",
+	paramtype = "light",
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	sunlight_propagates = true,
+	walkable = false,
+	on_rotate = false,
+	selection_box = {
+		type = "fixed",
+		fixed = { -3/16, -8/16, -8/16, 3/16, 3/16, 8/16 }
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -3/16, -3/16, 13/32        , 3/16,  3/16  , 8/16        }, -- the smaller bump
+			{ -1/32, -1/32, 1/2          , 1/32,  1/32  , 3/2         }, -- the wire through the block
+			{ -2/32, -1/2 , 0.5002-3/32  , 2/32,  0     , 0.5         }, -- the vertical wire bit
+			{ -2/32, -1/2 , -16/32+0.001 , 2/32,  -14/32,  7/16+0.002 }  -- the horizontal wire
+		}
+	},
+	drop = "lwcomponents:through_wire_off",
+	sounds = default.node_sound_defaults(),
+}, {
+	tiles = { "mesecons_wire_off.png" },
+	groups = { dig_immediate = 3 },
+	mesecons = {
+		conductor = {
+			state = mesecon.state.off,
+			rules = through_wire_get_rules,
+			onstate = "lwcomponents:through_wire_on"
+		}
+	}
+}, {
+	tiles = { "mesecons_wire_on.png" },
+	groups = { dig_immediate = 3, not_in_creative_inventory = 1 },
+	mesecons = {
+		conductor = {
+			state = mesecon.state.on,
+			rules = through_wire_get_rules,
+			offstate = "lwcomponents:through_wire_off"
+		}
+	}
+})
+
+
+
+end -- utils.mesecon_supported
+
+
+
+--

utils.lua

@@ -67,43 +67,6 @@ end
 
 
 
--- check for lwdrops
-if minetest.global_exists ("lwdrops") then
-	utils.lwdrops_supported = true
-	utils.on_destroy = lwdrops.on_destroy
-	utils.item_pickup = lwdrops.item_pickup
-	utils.item_drop = lwdrops.item_drop
-else
-	utils.lwdrops_supported = false
-
-	-- dummy
-	utils.on_destroy = function (itemstack)
-	end
-
-	utils.item_pickup = function (entity, cleanup)
-		local stack = nil
-
-		if entity and entity.name and entity.name == "__builtin:item" and
-			entity.itemstring and entity.itemstring ~= "" then
-
-			stack = ItemStack (entity.itemstring)
-
-			if cleanup ~= false then
-				entity.itemstring = ""
-				entity.object:remove ()
-			end
-		end
-
-		return stack
-	end
-
-	utils.item_drop = function (itemstack, dropper, pos)
-		return minetest.item_drop (itemstack, dropper, pos)
-	end
-end
-
-
-
 -- check for unifieddyes
 if minetest.global_exists ("unifieddyes") then
 	utils.unifieddyes_supported = true
@@ -138,6 +101,68 @@ end
 
 
 
+-- check for pipeworks
+if minetest.global_exists ("pipeworks") then
+	utils.pipeworks_supported = true
+	utils.pipeworks_after_place = pipeworks.after_place
+	utils.pipeworks_after_dig = pipeworks.after_dig
+else
+	utils.pipeworks_supported = false
+	utils.pipeworks_after_place = function (pos)
+	end
+	utils.pipeworks_after_dig = function (pos)
+	end
+end
+
+
+
+function utils.on_destroy (itemstack)
+	local stack = ItemStack (itemstack)
+
+	if stack and stack:get_count () > 0 then
+		local def = utils.find_item_def (stack:get_name ())
+
+		if def and def.on_destroy then
+			def.on_destroy (stack)
+		end
+	end
+end
+
+
+
+function utils.item_pickup (entity, cleanup)
+	local stack = nil
+
+	if entity and entity.name and entity.name == "__builtin:item" and
+		entity.itemstring and entity.itemstring ~= "" then
+
+		stack = ItemStack (entity.itemstring)
+
+		if cleanup ~= false then
+			entity.itemstring = ""
+			entity.object:remove ()
+		end
+	end
+
+	return stack
+end
+
+
+
+function utils.item_drop (itemstack, dropper, pos)
+	if itemstack then
+		local def = utils.find_item_def (itemstack:get_name ())
+
+		if def and def.on_drop then
+			return def.on_drop (itemstack, dropper, pos)
+		end
+	end
+
+	return minetest.item_drop (itemstack, dropper, pos)
+end
+
+
+
 function utils.can_interact_with_node (pos, player)
 	if not player or not player:is_player () then
 		return false
@@ -200,6 +225,22 @@ end
 
 
 
+function utils.is_same_item (item1, item2)
+	local copy1 = ItemStack (stack1)
+	local copy2 = ItemStack (stack2)
+
+	if copy1 and copy2 then
+		copy1:set_count (1)
+		copy2:set_count (1)
+
+		return copy1:to_string () == copy2:to_string ()
+	end
+
+	return false
+end
+
+
+
 function utils.destroy_node (pos)
 	local node = utils.get_far_node (pos)