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change.log

@@ -58,3 +58,7 @@ v0.1.8
 
 v0.1.9
 *	Fixed infotext on various nodes.
+
+
+v0.1.10
+*	Added cannons.

crafting.lua

@@ -3,6 +3,27 @@ local S = utils.S
 
 
 
+minetest.register_craft( {
+	output = "lwcomponents:cannon",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+		{ "default:chest", "default:wood", "" },
+		{ "default:copper_ingot", "default:stone", "" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:cannon_locked",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+		{ "default:chest_locked", "default:wood", "" },
+		{ "default:copper_ingot", "default:stone", "" },
+	},
+})
+
+
+
 if utils.digilines_supported or utils.mesecon_supported then
 
 minetest.register_craft( {

dispenser.lua

@@ -158,11 +158,12 @@ local function dispense_item (pos, node, slot)
 						if not obj then
 							obj = minetest.add_item (spawn_pos, item)
 
-							obj:set_velocity (dispense_velocity (node))
+							if obj then
+								obj:set_velocity (dispense_velocity (node))
+							end
 						end
 
 						if obj then
-
 							stack:set_count (stack:get_count () - 1)
 							inv:set_stack ("main", slot, stack)
 

init.lua

@@ -1,4 +1,4 @@
-local version = "0.1.9"
+local version = "0.1.10"
 local mod_storage = minetest.get_mod_storage ()
 
 
@@ -31,6 +31,7 @@ loadfile (modpath.."/breaker.lua") (utils)
 loadfile (modpath.."/deployer.lua") (utils)
 loadfile (modpath.."/fan.lua") (utils)
 loadfile (modpath.."/conduit.lua") (utils, mod_storage)
+loadfile (modpath.."/cannon.lua") (utils)
 loadfile (modpath.."/extras.lua") (utils)
 loadfile (modpath.."/digiswitch.lua") (utils)
 loadfile (modpath.."/movefloor.lua") (utils)

license.txt

@@ -69,6 +69,8 @@ public domain.
 
 player button images derived from mesecons button image.
 
+cannon firing sound from tnt, released under CC BY-SA 3.0 and CC0 1.0
+
 All other media, or media not covered by a licence, is licensed
 Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
 

readme.txt

@@ -13,7 +13,7 @@ CC BY-SA 3.0
 
 Version
 =======
-0.1.9
+0.1.10
 
 
 Minetest Version
@@ -63,6 +63,7 @@ Various components for mesecons and digilines.
 *	Hologram, projects a hologram above the hologram node.
 *	Fan, blows any entity, player or drop in front of the fan.
 *	Conduit, connected in a circuit to move items.
+*	Cannons, shots an item on command with directional aiming.
 *	Digiswitch, digilines controlled mesecons power.
 *	Movefloor, similar to vertical mesecons movestone.
 *	Solid color conductor blocks, same as Solid Color Block but also mesecons
@@ -84,7 +85,7 @@ the relevant mod is loaded.
 The mod supports the following settings:
 
 Spawn mobs
-	Allow dispensers to spawn mobs instead of spawners.
+	Allow dispensers and cannons to spawn mobs instead of spawners.
 	Default: true
 
 Alert handler errors

settingtypes.txt

@@ -1,4 +1,4 @@
-# Allow dispensers to spawn mobs instead of spawners.
+# Allow dispensers and cannons to spawn mobs instead of spawners.
 lwcomponents_spawn_mobs (Spawn mobs) bool true
 
 # Issue errors when handler's of other mods fail.

utils.lua

@@ -271,4 +271,62 @@ end
 
 
 
+function utils.can_place (pos)
+	local node = minetest.get_node_or_nil (pos)
+
+	if node and node.name ~= "air" then
+		local def = minetest.registered_nodes[node.name]
+
+		if not def or not def.buildable_to then
+			return false
+		end
+	end
+
+	return true
+end
+
+
+
+function utils.is_protected (pos, player)
+	local name = (player and player:get_player_name ()) or ""
+
+	return minetest.is_protected (pos, name)
+end
+
+
+
+function utils.get_on_rightclick (pos, player)
+	local node = minetest.get_node_or_nil (pos)
+
+	if node then
+		local def = minetest.registered_nodes[node.name]
+
+		if def and def.on_rightclick and
+			not (player and player:is_player () and
+				  player:get_player_control ().sneak) then
+
+				return def.on_rightclick
+		end
+	end
+
+	return nil
+end
+
+
+
+function utils.is_creative (player)
+	if minetest.settings:get_bool ("creative_mode") then
+		return true
+	end
+
+	if player and player:is_player () then
+		return minetest.is_creative_enabled (player:get_player_name ()) or
+				 minetest.check_player_privs (placer, "creative")
+	end
+
+	return false
+end
+
+
+
 --