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change.log

@@ -1,3 +1,24 @@
 
 v 0.1.0
 *	initial release
+
+
+v0.1.1
+*	Fixed receiving digilines message on "" channel.
+*	Added siren.
+*	Made digilines optional for solid conductor blocks.
+*	Fixed lighting
+*	Added puncher
+
+
+v0.1.2
+*	Added support for hopper as optional dependency for droppers, dispensers
+	and collectors.
+*	Added digilines message to punchers when something is punched.
+
+
+v0.1.3
+*	Added hp and height info from detector.
+*	Added dispensers spawn if spawner with optional dependency on mobs mod.
+	If mobs:egg is dispensed 10% change a chicken is dispensed instead.
+*	Added player_button.

collector.lua

@@ -20,7 +20,7 @@ local function send_collect_message (pos, name, count)
 
 			if channel:len () > 0 then
 				utils.digilines_receptor_send (pos,
-														 digiline.rules.default,
+														 utils.digilines_default_rules,
 														 channel,
 														 { action = "collect",
 															name = name,
@@ -389,7 +389,7 @@ local function digilines_support ()
 		{
 			wire =
 			{
-				rules = digiline.rules.default,
+				rules = utils.digilines_default_rules,
 			},
 
 			effector =
@@ -400,7 +400,7 @@ local function digilines_support ()
 					if meta then
 						local this_channel = meta:get_string ("channel")
 
-						if this_channel == channel then
+						if this_channel ~= "" and this_channel == channel then
 							local m = { }
 							for w in string.gmatch(msg, "[^%s]+") do
 								m[#m + 1] = w
@@ -432,7 +432,7 @@ minetest.register_node("lwcomponents:collector", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	floodable = false,
 	drop = "lwcomponents:collector",
@@ -458,7 +458,7 @@ minetest.register_node("lwcomponents:collector_locked", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	floodable = false,
 	drop = "lwcomponents:collector_locked",
@@ -484,7 +484,7 @@ minetest.register_node("lwcomponents:collector_on", {
 	is_ground_content = false,
 	groups = { cracky = 3, not_in_creative_inventory = 1 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	floodable = false,
 	drop = "lwcomponents:collector",
@@ -510,7 +510,7 @@ minetest.register_node("lwcomponents:collector_locked_on", {
 	is_ground_content = false,
 	groups = { cracky = 3, not_in_creative_inventory = 1 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	floodable = false,
 	drop = "lwcomponents:collector_locked",
@@ -529,6 +529,38 @@ minetest.register_node("lwcomponents:collector_locked_on", {
 
 
 
+utils.hopper_add_container({
+	{"top", "lwcomponents:collector", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:collector", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:collector", "main"}, -- insert items from hopper at side
+})
+
+
+
+utils.hopper_add_container({
+	{"top", "lwcomponents:collector_locked", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:collector_locked", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:collector_locked", "main"}, -- insert items from hopper at side
+})
+
+
+
+utils.hopper_add_container({
+	{"top", "lwcomponents:collector_on", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:collector_on", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:collector_on", "main"}, -- insert items from hopper at side
+})
+
+
+
+utils.hopper_add_container({
+	{"top", "lwcomponents:collector_locked_on", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:collector_locked_on", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:collector_locked_on", "main"}, -- insert items from hopper at side
+})
+
+
+
 end -- utils.digilines_supported
 
 

crafting.lua

@@ -58,6 +58,42 @@ minetest.register_craft( {
 	},
 })
 
+
+minetest.register_craft( {
+	output = "lwcomponents:siren",
+	recipe = {
+		{ "group:wood", "default:chest" },
+		{ "default:copper_ingot", "default:steel_ingot" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:siren_locked",
+	recipe = {
+		{ "group:wood", "default:chest_locked" },
+		{ "default:copper_ingot", "default:steel_ingot" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:puncher",
+	recipe = {
+		{ "default:chest", "default:sword_stone" },
+		{ "default:copper_ingot", "default:steel_ingot" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:puncher_locked",
+	recipe = {
+		{ "default:chest_locked", "default:sword_stone" },
+		{ "default:copper_ingot", "default:steel_ingot" },
+	},
+})
+
 end -- utils.digilines_supported or utils.mesecon_supported
 
 
@@ -85,6 +121,21 @@ end -- utils.digilines_supported
 
 
 
+if utils.digilines_supported and utils.digistuff_supported then
+
+
+minetest.register_craft({
+	output = "lwcomponents:player_button",
+	recipe = {
+		{ "mesecons_button:button_off", "digilines:wire_std_00000000" }
+	},
+})
+
+
+end -- utils.digilines_supported and utils.digistuff_supported
+
+
+
 if utils.mesecon_supported and mesecon.mvps_push then
 
 minetest.register_craft ({
@@ -115,7 +166,7 @@ end -- utils.digilines_supported and utils.mesecon_supported
 
 
 
-if utils.unifieddyes_supported and utils.mesecon_supported and utils.digilines_supported then
+if utils.unifieddyes_supported and utils.mesecon_supported then
 
 minetest.register_craft ({
 	output = "lwcomputers:solid_conductor_off 3",
@@ -134,7 +185,7 @@ minetest.register_craft ({
 	},
 })
 
-end -- utils.unifieddyes_supported and utils.mesecon_supported and utils.digilines_supported then
+end -- utils.unifieddyes_supported and utils.mesecon_supported then
 
 
 

depends.txt

@@ -4,3 +4,6 @@ mesecons?
 digilines?
 unifieddyes?
 intllib?
+hopper?
+mobs?
+digistuff?

detector.lua

@@ -60,7 +60,7 @@ end
 
 
 
-local function send_detect_message (pos, item_type, name, label, item_pos, count)
+local function send_detect_message (pos, item_type, name, label, item_pos, count, hp, height)
 	if utils.digilines_supported then
 		local meta = minetest.get_meta (pos)
 
@@ -69,14 +69,16 @@ local function send_detect_message (pos, item_type, name, label, item_pos, count
 
 			if channel:len () > 0 then
 				utils.digilines_receptor_send (pos,
-														 digiline.rules.default,
+														 utils.digilines_default_rules,
 														 channel,
 														 { action = "detect",
 															type = item_type,
 															name = name,
 															label = label,
 															pos = to_relative_coords (pos, item_pos),
-															count = count })
+															count = count,
+															hp = hp,
+															height = height })
 			end
 		end
 	end
@@ -132,6 +134,33 @@ end
 
 
 
+local function get_entity_height (objref)
+	if objref.get_luaentity then
+		entity = objref:get_luaentity ()
+
+		if entity and entity.name then
+			def = minetest.registered_entities[entity.name]
+
+			if def and type (def.collisionbox) == "table" and
+				type (def.collisionbox[5]) == "number" then
+
+				return def.collisionbox[5]
+			end
+		end
+	end
+
+	local props = objref:get_properties ()
+	if props and props.collisionbox and type (props.collisionbox) == "table" and
+		type (props.collisionbox[5]) == "number" then
+
+		return props.collisionbox[5]
+	end
+
+	return 0
+end
+
+
+
 local function detect (pos)
 	local meta = minetest.get_meta (pos)
 	local detected = false
@@ -153,7 +182,9 @@ local function detect (pos)
 												object[i]:get_player_name (),
 												object[i]:get_player_name (),
 												object[i]:get_pos (),
-												1)
+												1,
+												object[i]:get_hp (),
+												get_entity_height (object[i]))
 
 					detected = true
 				end
@@ -174,7 +205,9 @@ local function detect (pos)
 													stack:get_name (),
 													stack:get_name (),
 													object[i]:get_pos (),
-													stack:get_count ())
+													stack:get_count (),
+													0,
+													0)
 
 						detected = true
 					end
@@ -203,7 +236,9 @@ local function detect (pos)
 												name,
 												label,
 												object[i]:get_pos (),
-												1)
+												1,
+												object[i]:get_hp (),
+												get_entity_height (object[i]))
 
 					detected = true
 
@@ -228,7 +263,9 @@ local function detect (pos)
 														node.name,
 														node.name,
 														testpos,
-														1)
+														1,
+														0,
+														0)
 
 							detected = true
 						end
@@ -565,7 +602,7 @@ local function digilines_support ()
 		{
 			wire =
 			{
-				rules = digiline.rules.default,
+				rules = utils.digilines_default_rules,
 			},
 
 			effector =
@@ -576,7 +613,7 @@ local function digilines_support ()
 					if meta then
 						local this_channel = meta:get_string ("channel")
 
-						if this_channel == channel then
+						if this_channel ~= "" and this_channel == channel then
 							local m = { }
 							for w in string.gmatch(msg, "[^%s]+") do
 								m[#m + 1] = w
@@ -666,7 +703,7 @@ minetest.register_node("lwcomponents:detector", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -695,7 +732,7 @@ minetest.register_node("lwcomponents:detector_locked", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -724,7 +761,7 @@ minetest.register_node("lwcomponents:detector_on", {
 	is_ground_content = false,
 	groups = { cracky = 3, not_in_creative_inventory = 1 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -753,7 +790,7 @@ minetest.register_node("lwcomponents:detector_locked_on", {
 	is_ground_content = false,
 	groups = { cracky = 3, not_in_creative_inventory = 1 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,

digiswitch.lua

@@ -71,7 +71,7 @@ local function digilines_support ()
 				if meta then
 					local mychannel = meta:get_string ("channel")
 
-					if mychannel == channel then
+					if mychannel ~= "" and mychannel == channel then
 						if type (msg) == "string" then
 							local words = { }
 

dispenser.lua

@@ -52,7 +52,7 @@ local function send_dispense_message (pos, slot, name)
 
 			if channel:len () > 0 then
 				utils.digilines_receptor_send (pos,
-														 digiline.rules.default,
+														 utils.digilines_default_rules,
 														 channel,
 														 { action = "dispense",
 															name = name,
@@ -64,6 +64,90 @@ end
 
 
 
+local function try_spawn (pos, node, item)
+	if utils.mobs_supported then
+		local mob = item:get_name ()
+		local item_def = minetest.registered_craftitems[mob]
+		local spawn_pos = dispense_pos (pos, node)
+
+		if item_def and item_def.groups and item_def.groups.spawn_egg then
+			if mob:sub (mob:len () - 4) == "_set" then
+				mob = mob:sub (1, mob:len () - 5)
+
+				if minetest.registered_entities[mob] then
+					local data = item:get_metadata ()
+					local smob = minetest.add_entity (spawn_pos, mob, data)
+					local ent = smob and smob:get_luaentity ()
+
+					if ent then
+						local meta = minetest.get_meta (pos)
+
+						if meta then
+							local owner = meta:get_string ("owner")
+
+							-- set owner if not a monster
+							if owner:len () > 0 and ent.type ~= "monster" then
+								ent.owner = owner
+								ent.tamed = true
+							end
+						end
+					end
+
+					return smob
+				end
+
+			else
+				if minetest.registered_entities[mob] then
+					local smob = minetest.add_entity (spawn_pos, mob)
+					local ent = smob and smob:get_luaentity ()
+
+					if ent then
+						local meta = minetest.get_meta (pos)
+
+						if meta then
+							local owner = meta:get_string ("owner")
+
+							-- set owner if not a monster
+							if owner:len () > 0 and ent.type ~= "monster" then
+								ent.owner = owner
+								ent.tamed = true
+							end
+						end
+					end
+
+					return smob
+				end
+
+			end
+
+		elseif mob == "mobs:egg" then
+			if math.random (1, 10) == 1 then
+				local smob = minetest.add_entity (spawn_pos, "mobs_animal:chicken")
+				local ent = smob and smob:get_luaentity ()
+
+				if ent then
+					local meta = minetest.get_meta (pos)
+
+					if meta then
+						local owner = meta:get_string ("owner")
+
+						-- set owner if not a monster
+						if owner:len () > 0 and ent.type ~= "monster" then
+							ent.owner = owner
+							ent.tamed = true
+						end
+					end
+				end
+
+				return smob
+			end
+		end
+	end
+
+	return nil
+end
+
+
 -- slot:
 --    nil - next item, no dispense if empty
 --    number - 1 item from slot, no dispense if empty
@@ -119,7 +203,11 @@ local function dispense_item (pos, node, slot)
 					if item then
 						item:set_count (1)
 
-						local obj = minetest.add_item (dispense_pos (pos, node), item)
+						local obj = try_spawn (pos, node, item)
+
+						if not obj then
+							obj = minetest.add_item (dispense_pos (pos, node), item)
+						end
 
 						if obj then
 							obj:set_velocity (dispense_velocity (node))
@@ -314,7 +402,7 @@ local function digilines_support ()
 		{
 			wire =
 			{
-				rules = digiline.rules.default,
+				rules = utils.digilines_default_rules,
 			},
 
 			effector =
@@ -325,7 +413,7 @@ local function digilines_support ()
 					if meta then
 						local this_channel = meta:get_string ("channel")
 
-						if this_channel == channel then
+						if this_channel ~= "" and this_channel == channel then
 							local m = { }
 							for w in string.gmatch(msg, "[^%s]+") do
 								m[#m + 1] = w
@@ -377,7 +465,7 @@ minetest.register_node("lwcomponents:dispenser", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -403,7 +491,7 @@ minetest.register_node("lwcomponents:dispenser_locked", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -422,6 +510,22 @@ minetest.register_node("lwcomponents:dispenser_locked", {
 
 
 
+utils.hopper_add_container({
+	{"top", "lwcomponents:dispenser", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:dispenser", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:dispenser", "main"}, -- insert items from hopper at side
+})
+
+
+
+utils.hopper_add_container({
+	{"top", "lwcomponents:dispenser_locked", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:dispenser_locked", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:dispenser_locked", "main"}, -- insert items from hopper at side
+})
+
+
+
 end -- utils.digilines_supported or utils.mesecon_supported
 
 

dropper.lua

@@ -32,7 +32,7 @@ local function send_drop_message (pos, slot, name)
 
 			if channel:len () > 0 then
 				utils.digilines_receptor_send (pos,
-														 digiline.rules.default,
+														 utils.digilines_default_rules,
 														 channel,
 														 { action = "drop",
 															name = name,
@@ -290,7 +290,7 @@ local function digilines_support ()
 		{
 			wire =
 			{
-				rules = digiline.rules.default,
+				rules = utils.digilines_default_rules,
 			},
 
 			effector =
@@ -301,7 +301,7 @@ local function digilines_support ()
 					if meta then
 						local this_channel = meta:get_string ("channel")
 
-						if this_channel == channel then
+						if this_channel ~= "" and this_channel == channel then
 							local m = { }
 							for w in string.gmatch(msg, "[^%s]+") do
 								m[#m + 1] = w
@@ -353,7 +353,7 @@ minetest.register_node("lwcomponents:dropper", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -379,7 +379,7 @@ minetest.register_node("lwcomponents:dropper_locked", {
 	is_ground_content = false,
 	groups = { cracky = 3 },
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "light",
+	paramtype = "none",
 	param1 = 0,
 	paramtype2 = "facedir",
 	param2 = 1,
@@ -398,6 +398,21 @@ minetest.register_node("lwcomponents:dropper_locked", {
 
 
 
+utils.hopper_add_container({
+	{"top", "lwcomponents:dropper", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:dropper", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:dropper", "main"}, -- insert items from hopper at side
+})
+
+
+
+utils.hopper_add_container({
+	{"top", "lwcomponents:dropper_locked", "main"}, -- take items from above into hopper below
+	{"bottom", "lwcomponents:dropper_locked", "main"}, -- insert items below from hopper above
+	{"side", "lwcomponents:dropper_locked", "main"}, -- insert items from hopper at side
+})
+
+
 end -- utils.digilines_supported or utils.mesecon_supported
 
 

init.lua

@@ -1,4 +1,4 @@
-local version = "0.1.0"
+local version = "0.1.3"
 local mod_storage = minetest.get_mod_storage ()
 
 
@@ -20,6 +20,9 @@ loadfile (modpath.."/dropper.lua") (utils)
 loadfile (modpath.."/collector.lua") (utils)
 loadfile (modpath.."/dispenser.lua") (utils)
 loadfile (modpath.."/detector.lua") (utils)
+loadfile (modpath.."/siren.lua") (utils)
+loadfile (modpath.."/puncher.lua") (utils)
+loadfile (modpath.."/player_button.lua") (utils)
 loadfile (modpath.."/extras.lua") (utils)
 loadfile (modpath.."/digiswitch.lua") (utils)
 loadfile (modpath.."/movefloor.lua") (utils)

license.txt

@@ -14,8 +14,59 @@ See the GNU Lesser General Public License for more details:
 https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 
 
+
+lwsiren-buzz.ogg
+----------------
+derived from https://www.freesoundslibrary.com/alarm-sound-effect/
+
+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.
+https://creativecommons.org/licenses/by/4.0/
+
+
+
+lwsiren-horn.ogg
+----------------
+derived from https://www.freesoundslibrary.com/ahooga-horn/
+
+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.
+https://creativecommons.org/licenses/by/4.0/
+
+
+
+lwsiren-siren.ogg
+------------------
+https://www.freesoundslibrary.com/cop-siren/
+
+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.
+https://creativecommons.org/licenses/by/4.0/
+
+
+
+lwsiren-raid.ogg
+-----------------
+derived from https://www.freesoundslibrary.com/space-ship-siren-sound/
+
+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.
+https://creativecommons.org/licenses/by/4.0/
+
+
+
 Media license
 -------------
+siren images derived from images from https://openclipart.org, which is
+public domain.
+
+player button images derived from mesecons button image.
+
+All other media, or media not covered by a licence, is licensed
 Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
 
 You are free to:

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
+optional_depends = lwdrops, mesecons, digilines, unifieddyes, intllib, hopper, mobs, digistuff

player_button.lua

@@ -0,0 +1,232 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported and utils.digistuff_supported then
+
+
+
+local function on_contruct (pos)
+	local meta = minetest.get_meta(pos)
+	local spec =
+	"size[7.5,3]"..
+	"field[1,1;6,2;channel;Channel;${channel}]"..
+	"button_exit[2.5,2;3,1;submit;Set]"
+
+	meta:set_string("formspec", spec)
+end
+
+
+
+local function on_receive_fields (pos, formname, fields, sender)
+	local meta = minetest.get_meta(pos)
+
+	if fields.submit then
+		if fields.channel ~= "" then
+			meta:set_string ("channel", fields.channel)
+			meta:set_string ("formspec", "")
+			minetest.swap_node (pos, { name = "lwcomponents:player_button_off",
+												param2 = minetest.get_node(pos).param2 })
+		else
+			minetest.chat_send_player (sender:get_player_name(), "Please set a channel!")
+		end
+	end
+end
+
+
+
+local function player_button_push (pos, node, player)
+	local meta = minetest.get_meta (pos)
+
+	if player and player:is_player () then
+		local channel = meta:get_string ("channel")
+		local formspec = meta:get_string ("formspec")
+
+		if channel:len () > 0 and formspec:len () == 0 then
+			utils.digilines_receptor_send (pos,
+													 digistuff.button_get_rules (node),
+													 channel,
+													 { action = "player",
+														name = player:get_player_name () })
+		end
+	end
+
+	if node.name == "lwcomponents:player_button_off" then
+		node.name = "lwcomponents:player_button_on"
+
+		minetest.swap_node(pos, node)
+
+		if digistuff.mesecons_installed then
+			minetest.sound_play ("mesecons_button_push", { pos = pos })
+		end
+
+		minetest.get_node_timer (pos):start (0.25)
+	end
+end
+
+
+
+local function player_button_turnoff (pos)
+	local node = minetest.get_node(pos)
+	local meta = minetest.get_meta(pos)
+
+	if node.name == "lwcomponents:player_button_on" then
+		node.name = "lwcomponents:player_button_off"
+
+		minetest.swap_node (pos, node)
+
+		if digistuff.mesecons_installed then
+			minetest.sound_play ("mesecons_button_pop", { pos = pos })
+		end
+	end
+end
+
+
+
+minetest.register_node ("lwcomponents:player_button", {
+	description = "Player Button",
+	drawtype = "nodebox",
+	tiles = {
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button.png"
+	},
+	paramtype = "light",
+	paramtype2 = "facedir",
+	legacy_wallmounted = true,
+	walkable = false,
+	sunlight_propagates = true,
+	drop = "lwcomponents:player_button",
+	selection_box = {
+	type = "fixed",
+		fixed = { -6/16, -6/16, 5/16, 6/16, 6/16, 8/16 }
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -6/16, -6/16, 6/16, 6/16, 6/16, 8/16 },	-- the thin plate behind the button
+			{ -4/16, -2/16, 4/16, 4/16, 2/16, 6/16 }	-- the button itself
+		}
+	},
+	groups = { dig_immediate = 2, digiline_receiver = 1 },
+	_digistuff_channelcopier_fieldname = "channel",
+	sounds = default and default.node_sound_stone_defaults(),
+
+	digiline =
+	{
+		receptor = {},
+		wire = {
+			rules = digistuff.button_get_rules,
+		},
+	},
+
+	on_construct = on_contruct,
+	after_place_node = digistuff.place_receiver,
+	after_destruct = digistuff.remove_receiver,
+	on_receive_fields = on_receive_fields,
+})
+
+
+
+minetest.register_node ("lwcomponents:player_button_off", {
+	description = "Player Button",
+	drawtype = "nodebox",
+	tiles = {
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button.png"
+	},
+	paramtype = "light",
+	paramtype2 = "facedir",
+	legacy_wallmounted = true,
+	walkable = false,
+	sunlight_propagates = true,
+	drop = "lwcomponents:player_button",
+	selection_box = {
+	type = "fixed",
+		fixed = { -6/16, -6/16, 5/16, 6/16, 6/16, 8/16 }
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -6/16, -6/16, 6/16, 6/16, 6/16, 8/16 },	-- the thin plate behind the button
+			{ -4/16, -2/16, 4/16, 4/16, 2/16, 6/16 }	-- the button itself
+		}
+	},
+	groups = { dig_immediate = 2, digiline_receiver = 1, not_in_creative_inventory = 1 },
+	_digistuff_channelcopier_fieldname = "channel",
+	sounds = default and default.node_sound_stone_defaults(),
+
+	digiline =
+	{
+		receptor = {},
+		wire = {
+			rules = digistuff.button_get_rules,
+		},
+		effector = {
+			action = digistuff.button_handle_digilines,
+		},
+	},
+
+	after_destruct = digistuff.remove_receiver,
+	on_rightclick = player_button_push,
+})
+
+
+
+minetest.register_node ("lwcomponents:player_button_on", {
+	description = "Player Button",
+	drawtype = "nodebox",
+	tiles = {
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_side.png",
+	"lwplayer_button_on.png"
+	},
+	paramtype = "light",
+	paramtype2 = "facedir",
+	legacy_wallmounted = true,
+	walkable = false,
+	sunlight_propagates = true,
+	light_source = 7,
+	drop = "lwcomponents:player_button",
+	selection_box = {
+		type = "fixed",
+		fixed = { -6/16, -6/16, 5/16, 6/16, 6/16, 8/16 }
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -6/16, -6/16,  6/16, 6/16, 6/16, 8/16 },
+			{ -4/16, -2/16, 11/32, 4/16, 2/16, 6/16 }
+		}
+	},
+	groups = { dig_immediate = 2, digiline_receiver = 1, not_in_creative_inventory = 1 },
+	_digistuff_channelcopier_fieldname = "channel",
+	sounds = default and default.node_sound_stone_defaults(),
+
+	digiline =
+	{
+		receptor = {},
+		wire = {
+			rules = digistuff.button_get_rules,
+		},
+	},
+
+	after_destruct = digistuff.remove_receiver,
+--	on_rightclick = player_button_push,
+	on_timer = player_button_turnoff,
+})
+
+
+
+end -- utils.digilines_supported and utils.digistuff_supported

puncher.lua

@@ -0,0 +1,614 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported or utils.mesecon_supported then
+
+
+
+local function send_punch_message (pos, item_type, name, label)
+	if utils.digilines_supported then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local channel = meta:get_string ("channel")
+
+			if channel:len () > 0 then
+				utils.digilines_receptor_send (pos,
+														 utils.digilines_default_rules,
+														 channel,
+														 { action = "punch",
+															type = item_type,
+															name = name,
+															label = label })
+			end
+		end
+	end
+end
+
+
+
+local function direction_vector (pos)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local mode = meta:get_int ("mode")
+
+		if mode == 2 then
+			return { x = 0, y = 1, z = 0 }
+		elseif mode == 3 then
+			return { x = 0, y = -1, z = 0 }
+		else
+			local node = minetest.get_node (pos)
+
+			if node then
+				if node.param2 == 0 then
+					return { x = 0, y = 0, z = -1 }
+				elseif node.param2 == 1 then
+					return { x = -1, y = 0, z = 0 }
+				elseif node.param2 == 2 then
+					return { x = 0, y = 0, z = 1 }
+				elseif node.param2 == 3 then
+					return { x = 1, y = 0, z = 0 }
+				end
+			end
+		end
+	end
+
+	return { x = 0, y = 0, z = 0 }
+end
+
+
+
+local function punch (pos)
+	local meta = minetest.get_meta (pos)
+	local node = minetest.get_node (pos)
+
+	if meta and node and
+		(node.name == "lwcomponents:puncher_on" or
+		 node.name == "lwcomponents:puncher_locked_on") then
+
+		local reach = tonumber (meta:get_string ("reach")) or 1
+		local dir = direction_vector (pos)
+		local punched = false
+
+		for r = 1, reach do
+			local tpos = vector.add (pos, vector.multiply (dir, r))
+			local object = minetest.get_objects_inside_radius (tpos, 0.68)
+
+			for i = 1, #object do
+				if object[i]:is_player () then
+
+					-- player
+					if meta:get_string ("players") == "true" then
+
+						object[i]:punch (object[i],
+											  1.0,
+											  { full_punch_interval = 1.0,
+												 damage_groups = { fleshy = 4 } },
+												vector.direction (pos, object[i]:get_pos ()))
+
+						send_punch_message (pos,
+												  "player",
+												  object[i]:get_player_name (),
+												  object[i]:get_player_name ())
+
+						punched = true
+					end
+
+				elseif object[i].get_luaentity and object[i]:get_luaentity () and
+						 object[i]:get_luaentity ().name and
+						 object[i]:get_luaentity ().name == "__builtin:item" then
+
+					-- don't punch drops
+
+				elseif object[i].get_pos and object[i]:get_pos () then
+
+					-- entity
+					if meta:get_string ("entities") == "true" then
+						local name = object[i]:get_nametag_attributes ()
+						local label = ""
+
+						if type (name) == "table" then
+							label = tostring (name.text or "")
+						end
+
+						name = (object[i].get_luaentity and
+								  object[i]:get_luaentity () and
+								  object[i]:get_luaentity ().name) or ""
+
+						object[i]:punch (object[i],
+											  1.0,
+											  { full_punch_interval = 1.0,
+												 damage_groups = { fleshy = 4 } },
+												vector.direction (pos, object[i]:get_pos ()))
+
+						send_punch_message (pos,
+												  "entity",
+												  name,
+												  label)
+
+						punched = true
+					end
+
+				end
+
+			end
+
+			if punched then
+				break
+			end
+		end
+	end
+end
+
+
+
+local function get_form_spec (is_off, mode, entities, players)
+	return
+	"formspec_version[3]\n"..
+	"size[11.75,7.0;true]\n"..
+	"field[1.0,1.0;4.0,0.8;channel;Channel;${channel}]\n"..
+	"button[5.5,1.0;2.0,0.8;setchannel;Set]\n"..
+	"button[8.25,1.0;2.5,0.8;"..((is_off and "start;Start") or "stop;Stop").."]\n"..
+	"field[1.0,2.5;4.0,0.8;reach;Reach;${reach}]\n"..
+	"button[5.5,2.5;2.0,0.8;setreach;Set]\n"..
+	"checkbox[1.0,4.4;entities;Entities;"..entities.."]\n"..
+	"checkbox[1.0,5.4;players;Players;"..players.."]\n"..
+	"textlist[4.875,4.0;5.875,2.0;mode;Forward,Up,Down;"..tostring (mode)..";false]"
+end
+
+
+
+local function update_form_spec (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		local is_off = node.name == "lwcomponents:puncher" or
+							node.name == "lwcomponents:puncher_locked"
+
+		meta:set_string ("formspec", get_form_spec (is_off,
+																  meta:get_int ("mode"),
+																  meta:get_string ("entities"),
+																  meta:get_string ("players")))
+	end
+end
+
+
+
+local function start_puncher (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:puncher" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:puncher_on"
+
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		elseif node.name == "lwcomponents:puncher_locked" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:puncher_locked_on"
+
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		end
+	end
+end
+
+
+
+local function stop_puncher (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:puncher_on" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:puncher"
+
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		elseif node.name == "lwcomponents:puncher_locked_on" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:puncher_locked"
+
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		end
+	end
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+	local is_off = itemstack and (itemstack:get_name () == "lwcomponents:puncher" or
+											itemstack:get_name () == "lwcomponents:puncher_locked")
+
+	meta:set_string ("formspec", get_form_spec (is_off, 1, "false", "false"))
+
+	meta:set_string ("reach", "1")
+	meta:set_int ("mode", 1)
+	meta:set_string ("entities", "false")
+	meta:set_string ("players", "false")
+
+	-- 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", "Puncher (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.setreach then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local reach = math.min (math.max (tonumber (fields.reach) or 1, 1), 5)
+
+			meta:set_string ("reach", tostring (reach))
+		end
+	end
+
+	if fields.start then
+		start_puncher (pos)
+	end
+
+	if fields.stop then
+		stop_puncher (pos)
+	end
+
+	if fields.entities ~= nil then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			meta:set_string ("entities", fields.entities)
+			update_form_spec (pos)
+		end
+	end
+
+	if fields.players ~= nil then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			meta:set_string ("players", fields.players)
+			update_form_spec (pos)
+		end
+	end
+
+	if fields.mode then
+		local event = minetest.explode_textlist_event (fields.mode)
+
+		if event.type == "CHG" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				meta:set_int ("mode", event.index)
+				update_form_spec (pos)
+			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_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 then
+							local m = { }
+							for w in string.gmatch(msg, "[^%s]+") do
+								m[#m + 1] = w
+							end
+
+							if m[1] == "start" then
+								start_puncher (pos)
+
+							elseif m[1] == "stop" then
+								stop_puncher (pos)
+
+							elseif m[1] == "reach" then
+								local reach = math.min (math.max (tonumber (m[2]) or 1, 1), 5)
+
+								meta:set_string ("reach", tostring (reach))
+
+							elseif m[1] == "entities" then
+								meta:set_string ("entities", ((m[2] == "true") and "true") or "false")
+								update_form_spec (pos)
+
+							elseif m[1] == "players" then
+								meta:set_string ("players", ((m[2] == "true") and "true") or "false")
+								update_form_spec (pos)
+
+
+							elseif m[1] == "mode" then
+								if m[2] == "forward" then
+									meta:set_int ("mode", 1)
+									update_form_spec (pos)
+
+								elseif m[2] == "up" then
+									meta:set_int ("mode", 2)
+									update_form_spec (pos)
+
+								elseif m[2] == "down" then
+									meta:set_int ("mode", 3)
+									update_form_spec (pos)
+
+								end
+
+							elseif m[1] == "punch" then
+								punch (pos)
+
+							end
+						end
+					end
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+local function mesecon_support ()
+	if utils.mesecon_supported then
+		return
+		{
+			effector =
+			{
+				rules = utils.mesecon_default_rules,
+
+				action_on = function (pos, node)
+					-- do something to turn the effector on
+					punch (pos)
+				end
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+minetest.register_node("lwcomponents:puncher", {
+	description = S("Puncher"),
+	tiles = { "lwpuncher_face.png", "lwpuncher_face.png", "lwpuncher.png",
+				 "lwpuncher.png", "lwpuncher.png", "lwpuncher_face.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 1,
+	floodable = false,
+	drop = "lwcomponents:puncher",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	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:puncher_locked", {
+	description = S("Puncher (locked)"),
+	tiles = { "lwpuncher_face.png", "lwpuncher_face.png", "lwpuncher.png",
+				 "lwpuncher.png", "lwpuncher.png", "lwpuncher_face.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 1,
+	floodable = false,
+	drop = "lwcomponents:puncher_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	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
+})
+
+
+
+minetest.register_node("lwcomponents:puncher_on", {
+	description = S("Puncher"),
+	tiles = { "lwpuncher_face_on.png", "lwpuncher_face_on.png", "lwpuncher.png",
+				 "lwpuncher.png", "lwpuncher.png", "lwpuncher_face_on.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 1,
+	floodable = false,
+	drop = "lwcomponents:puncher",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	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:puncher_locked_on", {
+	description = S("Puncher (locked)"),
+	tiles = { "lwpuncher_face_on.png", "lwpuncher_face_on.png", "lwpuncher.png",
+				 "lwpuncher.png", "lwpuncher.png", "lwpuncher_face_on.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 1,
+	floodable = false,
+	drop = "lwcomponents:puncher_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	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 or utils.mesecon_supported
+
+
+
+--

readme.txt

@@ -13,7 +13,7 @@ CC BY-SA 3.0
 
 Version
 =======
-0.1.0
+0.1.3
 
 
 Minetest Version
@@ -33,6 +33,9 @@ mesecons
 digilines
 unifieddyes
 intllib
+hopper
+mobs
+digistuff
 
 
 Installation
@@ -56,7 +59,8 @@ Dropper
 * This block is only available if digilines and/or mesecons are loaded.
 
 Contains an inventory and drops an item on command. Also acts as a
-digilines conductor.
+digilines conductor. If the hopper mod is loaded, will take items from the
+top and sides, and release them from the bottom.
 
 UI
 
@@ -96,7 +100,14 @@ Dispenser
 * This block is only available if digilines and/or mesecons are loaded.
 
 Contains an inventory and dispenses (with velocity) an item on command.
-Also acts as a digilines conductor.
+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.
+
+Dispensers support mobs mod if loaded. Will spawn the entity from an 'egg'
+if possible, or the 'egg' is dispensed. If a chicken egg is dispensed a
+10% chance a chicken is dispensed instead. If the spawned entity can be
+owned (or tamed) and the dispenser is owned the owner of the dispenser is
+set as the owner of the entity.
 
 UI
 
@@ -137,7 +148,8 @@ Collector
 * This block is only available if digilines is loaded.
 
 Picks up dropped items in adjacent block, with optional filtering. Also
-acts as a digilines conductor.
+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.
 
 UI
 
@@ -230,7 +242,9 @@ message is a table with the following keys:
 	name = "<name>",
 	label = "<label>",
 	pos = { x = n, y = n, z = n },
-	count = <count>
+	count = <count>,
+	hp = <number>,
+	height = <number>
 }
 
 type
@@ -261,6 +275,148 @@ pos
 count
 	The count of items for a "drop", or 1 for everything else.
 
+hp
+	Health points for players and entities. Zero for everything else.
+
+height
+	Height for players and entities. Zero for everything else. This is simply
+	the top position of the object's collision box.
+
+
+Siren
+-----
+* This block is only available if digilines and/or mesecons are loaded.
+
+Plays a sound repeatedly while active. Also acts as a digilines conductor.
+
+UI
+
+Channel - digilines channel of siren.
+Distance - block distance the sound can be heard (range 0 to 100).
+Volume - volume the sound is played.
+Sound - select Buzzer, Horn, Raid or Siren.
+
+Mesecons
+	Sound plays while mesecons power is applied.
+
+Digilines messages
+
+"start"
+	Start the siren (turn on).
+
+"stop"
+	Stop the siren (turn off).
+
+"distance <n>"
+	Set block distance the sound can be heard. <n> should be a number
+	from 1 to 100, and is trimmed to this range.
+
+"volume <n>"
+	Set the sound volume. <n> should be a number from 1 to 100, and is
+	trimmed to this range.
+
+"sound buzzer"
+"sound horn"
+"sound raid"
+"sound siren"
+	Set the sound of the siren.
+
+"siren on"
+	Activate the siren, if its on.
+
+"siren off"
+	deactivate the siren.
+
+
+
+Puncher
+-------
+* This block is only available if digilines and/or mesecons are loaded.
+
+Punches players or entities within a given reach. Also acts as a
+digilines conductor.
+
+UI
+
+Channel - digilines channel of detector.
+Reach - block distance from puncher to punch.
+Entities - if checked punches entities.
+Players - if checked punches players.
+
+mode:
+	Forward - punches to reach extent directly in front of the puncher (one block high).
+	Up - detects to reach extent directly above the puncher (one block wide).
+	Down - detects to reach extent directly below the puncher (one block wide).
+
+Mesecons
+	Punches the next item when power is turned on.
+
+Digilines messages
+
+"start"
+	Start the puncher.
+
+"stop"
+	Stop the puncher.
+
+"reach <n>"
+	Set reach of the puncher. <n> should be a number from 1 to 5, and is
+	trimmed to this range.
+
+"entities <true|false>"
+	Set punching of entities on or off.
+
+"players <true|false>"
+	Set punching of players on or off.
+
+"mode forward"
+"mode up"
+"mode down"
+	Set the puncher's mode.
+
+"punch"
+	Action a single punch if the puncher is turned on.
+
+When a player or entity is punched a digilines message is sent with the
+puncher's channel. The message is a table with the following keys:
+{
+	action = "punch",
+	type = "<type>", -- will be "entity" or "player"
+	name = "<name>",
+	label = "<label>"
+}
+
+type
+	Will be "entity" or "player".
+
+name
+	For "entity" the registered entity name.
+	For "player" the player's name.
+
+label
+	For "entity" the name tag text.
+	For "player" the player's name.
+
+
+
+Player Button
+-------------
+* This block is only available if both digilines and digistuff are loaded.
+
+When pressed sends a digilines message with the name of the player that
+pressed the button.
+
+The first time the button is right clicked a form opens to set the
+digilines channel. After that right click presses the button. The
+digilines cannot be changed after its set.
+
+When the button is pressed a digilines message is sent with the button's
+channel in the form:
+{
+	action = "player",
+	name = <player name>
+}
+
 
 
 DigiSwitch
@@ -309,8 +465,7 @@ the MoveFloor will not move.
 
 Solid Color Conductors
 ----------------------
-* These blocks are only defined if mesecons, digilines, and unifieddyes are
+* These blocks are only defined if mesecons and unifieddyes are loaded.
-loaded.
 
 Provides 2 blocks that can be colored the same as Solid Color Block (with
 the air brush) and is both a mesecons and digilines conductor.

siren.lua

@@ -0,0 +1,692 @@
+local utils = ...
+local S = utils.S
+
+
+
+if utils.digilines_supported or utils.mesecon_supported then
+
+
+
+local sound_interval = 5.0
+
+
+
+local siren_sounds =
+{
+	"lwsiren-buzz",
+	"lwsiren-horn",
+	"lwsiren-raid",
+	"lwsiren-siren",
+}
+
+
+
+local function start_sound (pos)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local handle = meta:get_int ("sound_handle")
+
+		if handle ~= 0 then
+			minetest.sound_stop (handle)
+			meta:set_int ("sound_handle", 0)
+		end
+
+		local sound = siren_sounds[meta:get_int ("sound")]
+
+		if sound then
+			handle = minetest.sound_play (
+				sound,
+				{
+					pos = pos,
+					max_hear_distance = meta:get_int ("distance"),
+					gain = meta:get_int ("gain") / 100
+				})
+
+			meta:set_int ("sound_handle", handle)
+		end
+	end
+end
+
+
+
+local function stop_sound (pos)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local handle = meta:get_int ("sound_handle")
+
+		if handle ~= 0 then
+			minetest.sound_stop (handle)
+			meta:set_int ("sound_handle", 0)
+		end
+	end
+end
+
+
+
+local function get_form_spec (is_off, distance, gain, sound)
+	return
+	"formspec_version[3]\n"..
+	"size[11.75,6.0;true]\n"..
+	"field[1.0,1.0;4.0,0.8;channel;Channel;${channel}]\n"..
+	"button[5.5,1.0;2.0,0.8;setchannel;Set]\n"..
+	"button[8.25,1.0;2.5,0.8;"..((is_off and "start;Start") or "stop;Stop").."]\n"..
+	"label[1.0,2.5;Distance]\n"..
+	"scrollbaroptions[min=0;max=100;smallstep=10;largestep=10;thumbsize=10]\n"..
+	"scrollbar[1.0,2.9;6.0,0.5;horizontal;distance;"..tostring (distance).."]\n"..
+	"label[1.0,4.2;Volume]\n"..
+	"scrollbaroptions[min=0;max=100;smallstep=10;largestep=10;thumbsize=10]\n"..
+	"scrollbar[1.0,4.5;6.0,0.5;horizontal;gain;"..tostring (gain).."]\n"..
+	"textlist[7.75,2.25;3.0,2.75;sound;Buzzer,Horn,Raid,Siren;"..tostring (sound)..";false]"
+end
+
+
+
+local function update_form_spec (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		local is_off = node.name == "lwcomponents:siren" or
+							node.name == "lwcomponents:siren_locked"
+
+		meta:set_string ("formspec",
+							  get_form_spec (is_off,
+												  meta:get_int ("distance"),
+												  meta:get_int ("gain"),
+												  meta:get_int ("sound")))
+	end
+end
+
+
+
+local function start_siren (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:siren" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_on"
+
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		elseif node.name == "lwcomponents:siren_locked" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_locked_on"
+
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		end
+	end
+end
+
+
+
+local function stop_siren (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:siren_on" or
+			node.name == "lwcomponents:siren_alarm" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren"
+
+				minetest.get_node_timer (pos):stop ()
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		elseif node.name == "lwcomponents:siren_locked_on" or
+				 node.name == "lwcomponents:siren_locked_alarm" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_locked"
+
+				minetest.get_node_timer (pos):stop ()
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+				update_form_spec (pos)
+			end
+
+		end
+	end
+end
+
+
+
+local function start_alarm (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:siren_on" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_alarm"
+
+				minetest.get_node_timer (pos):start (sound_interval)
+				start_sound (pos)
+				minetest.swap_node (pos, node)
+			end
+
+		elseif node.name == "lwcomponents:siren_locked_on" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_locked_alarm"
+
+				minetest.get_node_timer (pos):start (sound_interval)
+				start_sound (pos)
+				minetest.swap_node (pos, node)
+			end
+
+		end
+	end
+end
+
+
+
+local function stop_alarm (pos)
+	local node = minetest.get_node (pos)
+	local meta = minetest.get_meta (pos)
+
+	if node and meta then
+		if node.name == "lwcomponents:siren_alarm" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_on"
+
+				minetest.get_node_timer (pos):stop ()
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+			end
+
+		elseif node.name == "lwcomponents:siren_locked_alarm" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				node.name = "lwcomponents:siren_locked_on"
+
+				minetest.get_node_timer (pos):stop ()
+				stop_sound (pos)
+				minetest.swap_node (pos, node)
+			end
+
+		end
+	end
+end
+
+
+
+local function on_destruct (pos)
+	minetest.get_node_timer (pos):stop ()
+	stop_sound (pos)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+	local is_off = itemstack and (itemstack:get_name () == "lwcomponents:siren" or
+											itemstack:get_name () == "lwcomponents:siren_locked")
+
+	meta:set_string ("formspec", get_form_spec (is_off, 10, 50, 1))
+
+	meta:set_int ("sound", 1)
+	meta:set_int ("distance", 10)
+	meta:set_int ("gain", 50)
+	meta:set_int ("sound_handle", 0)
+
+	-- 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", "Detector (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.start then
+		start_siren (pos)
+	end
+
+	if fields.stop then
+		stop_siren (pos)
+	end
+
+	if fields.sound then
+		local event = minetest.explode_textlist_event (fields.sound)
+
+		if event.type == "CHG" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				meta:set_int ("sound", event.index)
+			end
+		end
+	end
+
+	if fields.gain then
+		local event = minetest.explode_scrollbar_event (fields.gain)
+
+		if event.type == "CHG" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				meta:set_int ("gain", event.value)
+			end
+		end
+	end
+
+	if fields.distance then
+		local event = minetest.explode_scrollbar_event (fields.distance)
+
+		if event.type == "CHG" then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				meta:set_int ("distance", event.value)
+			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_blast (pos, intensity)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		if intensity >= 1.0 then
+			on_destruct (pos)
+			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)
+						on_destruct (pos)
+						minetest.remove_node (pos)
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function on_timer (pos, elapsed)
+	start_sound (pos)
+
+	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
+
+	else
+		update_form_spec (pos)
+	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 then
+							local m = { }
+							for w in string.gmatch(msg, "[^%s]+") do
+								m[#m + 1] = w
+							end
+
+							if m[1] == "start" then
+								start_siren (pos)
+
+							elseif m[1] == "stop" then
+								stop_siren (pos)
+
+							elseif m[1] == "siren" then
+								if m[2] == "on" then
+									start_alarm (pos)
+
+								elseif m[2] == "off" then
+									stop_alarm (pos)
+
+								end
+
+							elseif m[1] == "distance" then
+								local distance = math.min (math.max (tonumber (m[2] or 1) or 1, 1), 100)
+
+								meta:set_int ("distance", distance)
+
+							elseif m[1] == "volume" then
+								local volume = math.min (math.max (tonumber (m[2] or 1) or 1, 1), 100)
+
+								meta:set_int ("gain", volume)
+
+							elseif m[1] == "sound" then
+								if m[2] == "buzzer" then
+									meta:set_int ("sound", 1)
+									update_form_spec (pos)
+
+								elseif m[2] == "horn" then
+									meta:set_int ("sound", 2)
+									update_form_spec (pos)
+
+								elseif m[2] == "raid" then
+									meta:set_int ("sound", 3)
+									update_form_spec (pos)
+
+								elseif m[2] == "siren" then
+									meta:set_int ("sound", 4)
+									update_form_spec (pos)
+
+								end
+							end
+						end
+					end
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+local function mesecon_support ()
+	if utils.mesecon_supported then
+		return
+		{
+			effector =
+			{
+				rules = utils.mesecon_default_rules,
+
+				action_on = function (pos, node)
+					-- do something to turn the effector on
+					start_alarm (pos)
+				end,
+
+				action_off = function (pos, node)
+					-- do something to turn the effector off
+					stop_alarm (pos)
+				end,
+			}
+		}
+	end
+
+	return nil
+end
+
+
+
+minetest.register_node("lwcomponents:siren", {
+	description = S("Siren"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren.png",
+				 "lwsiren.png", "lwsiren.png", "lwsiren.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	floodable = false,
+	drop = "lwcomponents:siren",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:siren_locked", {
+	description = S("Siren (locked)"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren.png",
+				 "lwsiren.png", "lwsiren.png", "lwsiren.png"},
+	is_ground_content = false,
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	floodable = false,
+	drop = "lwcomponents:siren_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node_locked,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:siren_on", {
+	description = S("Siren"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren_on.png",
+				 "lwsiren_on.png", "lwsiren_on.png", "lwsiren_on.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	floodable = false,
+	drop = "lwcomponents:siren",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:siren_locked_on", {
+	description = S("Siren (locked)"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren_on.png",
+				 "lwsiren_on.png", "lwsiren_on.png", "lwsiren_on.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	floodable = false,
+	drop = "lwcomponents:siren_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node_locked,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:siren_alarm", {
+	description = S("Siren"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren_alarm.png",
+				 "lwsiren_alarm.png", "lwsiren_alarm.png", "lwsiren_alarm.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	light_source = 3,
+	floodable = false,
+	drop = "lwcomponents:siren",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+minetest.register_node("lwcomponents:siren_locked_alarm", {
+	description = S("Siren (locked)"),
+	tiles = { "lwsiren_base.png", "lwsiren_base.png", "lwsiren_alarm.png",
+				 "lwsiren_alarm.png", "lwsiren_alarm.png", "lwsiren_alarm.png"},
+	is_ground_content = false,
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+	paramtype = "none",
+	param1 = 0,
+	light_source = 3,
+	floodable = false,
+	drop = "lwcomponents:siren_locked",
+	_digistuff_channelcopier_fieldname = "channel",
+
+	mesecons = mesecon_support (),
+	digiline = digilines_support (),
+
+	on_destruct = on_destruct,
+	on_receive_fields = on_receive_fields,
+	can_dig = can_dig,
+	after_place_node = after_place_node_locked,
+	on_blast = on_blast,
+	on_timer = on_timer,
+	on_rightclick = on_rightclick
+})
+
+
+
+end -- utils.digilines_supported or utils.mesecon_supported
+
+
+
+--

solid_conductor.lua

@@ -3,7 +3,7 @@ local S = utils.S
 
 
 
-if utils.unifieddyes_supported and utils.mesecon_supported and utils.digilines_supported then
+if utils.unifieddyes_supported and utils.mesecon_supported then
 
 
 
@@ -17,7 +17,7 @@ mesecon.register_node (":lwcomponents:solid_conductor",
 		palette = "unifieddyes_palette_extended.png",
 		on_rotate = false,
 		drop = "lwcomponents:solid_conductor_off",
-		digiline = { wire = { rules = mesecon.rules.default } },
+		digiline = { wire = { rules = utils.digilines_default_rules } },
 		on_construct = unifieddyes.on_construct,
 		on_dig = unifieddyes.on_dig,
 	},
@@ -27,8 +27,8 @@ mesecon.register_node (":lwcomponents:solid_conductor",
 		{
 			conductor =
 			{
-				rules = mesecon.rules.default,
+				rules = utils.mesecon_default_rules,
-				state = mesecon.state.off,
+				state = utils.mesecon_state_off,
 				onstate = "lwcomponents:solid_conductor_on",
 			}
 		},
@@ -43,8 +43,8 @@ mesecon.register_node (":lwcomponents:solid_conductor",
 		{
 			conductor =
 			{
-				rules = mesecon.rules.default,
+				rules = utils.mesecon_default_rules,
-				state = mesecon.state.on,
+				state = utils.mesecon_state_on,
 				offstate = "lwcomponents:solid_conductor_off",
 			}
 		},
@@ -83,7 +83,7 @@ mesecon.register_node (":lwcomponents:solid_horizontal_conductor",
 		palette = "unifieddyes_palette_extended.png",
 		on_rotate = false,
 		drop = "lwcomponents:solid_horizontal_conductor_off",
-		digiline = { wire = { rules = mesecon.rules.flat } },
+		digiline = { wire = { rules = utils.digilines_flat_rules } },
 		on_construct = unifieddyes.on_construct,
 		on_dig = unifieddyes.on_dig,
 	},
@@ -93,8 +93,8 @@ mesecon.register_node (":lwcomponents:solid_horizontal_conductor",
 		{
 			conductor =
 			{
-				rules = mesecon.rules.flat,
+				rules = utils.mesecon_flat_rules,
-				state = mesecon.state.off,
+				state = utils.mesecon_state_off,
 				onstate = "lwcomponents:solid_horizontal_conductor_on",
 			}
 		},
@@ -109,8 +109,8 @@ mesecon.register_node (":lwcomponents:solid_horizontal_conductor",
 		{
 			conductor =
 			{
-				rules = mesecon.rules.flat,
+				rules = utils.mesecon_flat_rules,
-				state = mesecon.state.on,
+				state = utils.mesecon_state_on,
 				offstate = "lwcomponents:solid_horizontal_conductor_off",
 			}
 		},
@@ -139,4 +139,4 @@ unifieddyes.register_color_craft ({
 
 
 
-end -- utils.unifieddyes_supported and utils.mesecon_supported and utils.digilines_supported then
+end -- utils.unifieddyes_supported and utils.mesecon_supported then

utils.lua

@@ -47,9 +47,18 @@ end
 -- check for digilines
 if minetest.global_exists ("digilines") then
 	utils.digilines_supported = true
+	utils.digilines_default_rules = digiline.rules.default
+	utils.digilines_flat_rules = {
+		{ x =  1, y = 0, z =  0 },
+		{ x = -1, y = 0, z =  0 },
+		{ x =  0, y = 0, z =  1 },
+		{ x =  0, y = 0, z = -1 },
+	}
 	utils.digilines_receptor_send = digilines.receptor_send
 else
 	utils.digilines_supported = false
+	utils.digilines_default_rules = { }
+	utils.digilines_flat_rules = { }
 
 	-- dummy
 	utils.digilines_receptor_send = function (pos, rules, channel, msg)
@@ -104,6 +113,40 @@ end
 
 
 
+-- check for hopper
+if minetest.global_exists ("hopper") then
+	utils.hopper_supported = true
+
+	utils.hopper_add_container = function (list)
+		hopper:add_container (list)
+	end
+else
+	utils.hopper_supported = false
+
+	utils.hopper_add_container = function (list)
+	end
+end
+
+
+
+-- check for mobs
+if minetest.global_exists ("mobs") then
+	utils.mobs_supported = true
+else
+	utils.mobs_supported = false
+end
+
+
+
+-- check for digistuff
+if minetest.global_exists ("digistuff") then
+	utils.digistuff_supported = true
+else
+	utils.digistuff_supported = false
+end
+
+
+
 function utils.can_interact_with_node (pos, player)
 	if not player or not player:is_player () then
 		return false