Misc bugfixes and improvements

README.md

@@ -184,6 +184,8 @@ Special Properties
 ------------------
 Properties used internally by the framework.
 
+	initialized = false,
+	activated = false,
 	properties = {textures=textures},
 	npcf_id = id,
 	owner = owner,
@@ -198,31 +200,27 @@ where it may be desireable update the statically saved position.
 Callbacks
 ---------
 Additional callbacks provided by the framework.
-
-### on_construct = function(self)
-This is called before the slightly delayed inbuilt on_activate callback.
-Please note that the self.npc_id, self.owner and self.origin properties
-may not be available or nil at the time of construction.
-
-### on_destruct = function(self, hitter)
-Called when an NPC is destroyed by punching. Can be used to unload the NPC when defeated by a player.
-See the Guard NPC for an example.
-
-### on_update = function(npc)
-Called every time an NPC object is updated (NPCF_UPDATE_TIME) even when the LuaEntitySAO is not loaded.
 Note that 'npc' is a NPC object reference, not a LuaEntitySAO reference. The latter can be obtained from
 npc.object but only when the LuaEntitySAO is loaded.
 
-## on_tell = function(npc, sender, message)
-Called when the 'tell' chat command is issued. Once again here, 'npc' is a NPC object reference rather
-than a LuaEntitySAO reference. A LuaEntitySAO reference is available when loaded.
-This Behavior diverges from version 0.1.0, however, it does now allow for interaction even when the
-associated LuaEntitySAO not loaded.
+### on_construct = function(npc)
+Called when the NPC object is first created.
+
+### on_update = function(npc)
+Called every time an NPC object is updated (NPCF_UPDATE_TIME) even when the LuaEntitySAO is not loaded.
+
+### on_tell = function(npc, sender, message)
+Called when the 'tell' chat command is issued. Note that this Behavior diverges from version 0.1.0,
+however, it does now allow for interaction even when the associated LuaEntitySAO not loaded.
 
 ### on_receive_fields = function(self, fields, sender)
 Called when a button is pressed in the NPC's formspec. text fields, dropdown,
 list and checkbox selections are automatically stored in the metadata table.
 
+### on_destruct = function(self, hitter)
+Called when an NPC is destroyed by punching. Can be used to unload the NPC when defeated by a player.
+See the Guard NPC for an example.
+
 npcf
 ----
 The global NPC framework namespace.
@@ -241,17 +239,17 @@ The global NPC framework namespace.
 All of the above can be overridden by including a npcf.conf file in the npcf directory.
 See: npcf.conf.example
 
-## npcf.index
+### npcf.index
 
 Ownership table of all spawned NPCs (loaded or unloaded)
 
 	npcf.index[id] = owner -- owner's name
 
-## npcf.npcs
+### npcf.npcs
 
 Table of loaded NPC object references.
 
-## npcf.npc
+### npcf.npc
 
 NPC object prototype.
 
@@ -259,7 +257,7 @@ NPC object prototype.
 	timer = 0,
 	object = nil -- LuaEntitySAO added as required
 
-## npcf.npc:new(ref)
+### npcf.npc:new(ref)
 
 Create a new NPC object instance.
 
@@ -282,7 +280,7 @@ Create a new NPC object instance.
 If used directly then it is the caller's resposibilty to store the reference and update the index.
 Use: npcf:add_npc(ref) instead to have this done automatically by the framework.
 
-## npc:update()
+### npc:update()
 
 Update the NPC object. Adds a LuaEntitySAO when in range of players (NPCF_RELOAD_DISTANCE)
 Called automatically on global step (NPCF_UPDATE_TIME) for all loaded NPC objects.

npcf/init.lua

@@ -104,3 +104,9 @@ minetest.register_globalstep(function(dtime)
 	end
 end)
 
+minetest.register_on_shutdown(function()
+	for id, npc in pairs(npcf.npcs) do
+		npcf:save(id)
+	end
+end)
+

npcf/npcf.lua

@@ -148,6 +148,7 @@ function npcf:add_entity(ref)
 			entity.var = ref.var
 			entity.owner = ref.owner
 			entity.origin = ref.origin
+			entity.initialized = true
 			return object
 		end
 	end
@@ -158,21 +159,28 @@ function npcf:add_npc(ref)
 		ref.name = NPCF_ALIAS[ref.name] or ref.name
 		local def = deepcopy(minetest.registered_entities[ref.name])
 		if def then
-			for k, v in pairs(def.metadata) do
-				if ref.metadata[k] == nil then
-					ref.metadata[k] = v
+			ref.metadata = ref.metadata or {}
+			if type(def.metadata) == "table" then
+				for k, v in pairs(def.metadata) do
+					if ref.metadata[k] == nil then
+						ref.metadata[k] = v
+					end
 				end
 			end
 			ref.yaw = ref.yaw or {x=0, y=0, z=0}
 			ref.title = ref.title or def.title
 			ref.properties = {textures=ref.textures or def.textures}
-			ref.metadata = ref.metadata
 			ref.var = ref.var or def.var
-			ref.origin = {
-				pos = ref.pos,
-				yaw = ref.yaw,
-			}
+			if not ref.origin then
+				ref.origin = {
+					pos = ref.pos,
+					yaw = ref.yaw,
+				}
+			end
 			local npc = npcf.npc:new(ref)
+			if type(def.on_construct) == "function" then
+				def.on_construct(npc)
+			end
 			npcf.npcs[ref.id] = npc
 			npcf.index[ref.id] = ref.owner
 			return npc
@@ -188,6 +196,8 @@ function npcf:register_npc(name, def)
 			ref[k] = v
 		end
 	end
+	ref.initialized = false
+	ref.activated = false
 	ref.on_activate = function(self, staticdata)
 		if staticdata == "expired" then
 			self.object:remove()
@@ -196,14 +206,6 @@ function npcf:register_npc(name, def)
 		if self.object then
 			self.object:set_armor_groups(def.armor_groups)
 		end
-		if type(ref.on_construct) == "function" then
-			ref.on_construct(self)
-		end
-		if type(def.on_activate) == "function" then
-			minetest.after(0.5, function()
-				def.on_activate(self)
-			end)
-		end
 	end
 	ref.on_rightclick = function(self, clicker)
 		local id = self.npc_id
@@ -234,9 +236,18 @@ function npcf:register_npc(name, def)
 		end
 	end
 	ref.on_step = function(self, dtime)
-		self.timer = self.timer + dtime
-		if type(def.on_step) == "function" then
-			def.on_step(self, dtime)
+		if self.initialized == true then
+			if self.activated == true then
+				if type(def.on_step) == "function" then
+					self.timer = self.timer + dtime
+					def.on_step(self, dtime)
+				end
+			else
+				if type(def.on_activate) == "function" then
+					def.on_activate(self)
+				end
+				self.activated = true
+			end
 		end
 	end
 	ref.get_staticdata = function(self)
@@ -338,8 +349,8 @@ function npcf:load(id)
 		local ref = minetest.deserialize(input:read('*all'))
 		io.close(input)
 		ref.id = id
-		ref.pos = ref.origin.pos
-		ref.yaw = ref.origin.yaw
+		ref.pos = ref.pos or ref.origin.pos
+		ref.yaw = ref.yaw or ref.origin.yaw
 		return npcf:add_npc(ref)
 	end
 	minetest.log("error", "Failed to laod NPC: "..id)
@@ -349,6 +360,8 @@ function npcf:save(id)
 	local npc = self.npcs[id]
 	if npc then
 		local ref = {
+			pos = npc.pos,
+			yaw = npc.yaw,
 			name = npc.name,
 			owner = npc.owner,
 			title = {

npcf_builder/init.lua

@@ -152,15 +152,13 @@ npcf:register_npc("npcf_builder:npc" ,{
 	},
 	stepheight = 1.1,
 	inventory_image = "npcf_builder_inv.png",
-	on_construct = function(self)
-		self.metadata.building = false
+	on_activate = function(self)
 		self.object:setvelocity({x=0, y=0, z=0})
 		self.object:setacceleration({x=0, y=-10, z=0})
+		self.metadata.building = false
 		if self.metadata.schematic and self.metadata.build_pos then
 			load_schematic(self, self.metadata.schematic)
 		end
-	end,
-	on_activate = function(self)
 		local inv = minetest.create_detached_inventory("npcf_"..self.npc_id, {
 			on_put = function(inv, listname, index, stack, player)
 				local player_name = player:get_player_name()

npcf_deco/init.lua

@@ -67,12 +67,10 @@ npcf:register_npc("npcf_deco:npc" ,{
 	},
 	stepheight = 1.1,
 	inventory_image = "npcf_deco_inv.png",
-	on_construct = function(self)
+	on_activate = function(self)
 		self.object:setvelocity({x=0, y=0, z=0})
 		self.object:setacceleration({x=0, y=-10, z=0})
 		npcf:set_animation(self, ANIMATION[self.metadata.anim_stop].state)
-	end,
-	on_activate = function(self)
 		if self.metadata.follow_players == "true" then
 			self.var.target = get_target_player(self)
 		end

npcf_mob/init.lua

@@ -71,7 +71,6 @@ end
 
 npcf:register_npc("npcf_mob:npc", {
 	description = "Mob NPC",
-	mesh = "npcf_mob.b3d",
 	textures = {"npcf_mob_skin.png"},
 	collisionbox = {-0.35,-1.0,-0.35, 0.35,0.5,0.35},
 	animation_speed = 25,
@@ -97,7 +96,7 @@ npcf:register_npc("npcf_mob:npc", {
 			end
 		end
 	end,
-	on_construct = function(self)
+	on_activate = function(self)
 		self.object:setvelocity({x=0, y=0, z=0})
 		self.object:setacceleration({x=0, y=-10, z=0})
 	end,

npcf_trader/init.lua

@@ -91,7 +91,6 @@ end
 
 npcf:register_npc("npcf_trader:npc" ,{
 	description = "Trader NPC",
-	mesh = "npcf_trader.x",
 	textures = {"npcf_trader_skin.png"},
 	metadata = {
 		trades = {},