Snow golems use mcl_throwing snowball

mods/ENTITIES/mobs_mc/snowman.lua

@@ -55,7 +55,7 @@ mobs:register_mob("mobs_mc:snowman", {
 	arrow = "mcl_throwing:snowball_entity",
 	shoot_arrow = function(self, pos, dir)
 		if mod_throwing then
-			mcl_throwing.throw("mcl_throwing:snowball", pos, dir)
+			mcl_throwing.throw("mcl_throwing:snowball", pos, dir, nil, self.object)
 		end
 	end,
 	shoot_interval = 1,

mods/ITEMS/mcl_fishing/init.lua

@@ -146,8 +146,7 @@ local fish = function(itemstack, player)
 		if noent == true then
 			local playerpos = player:get_pos()
 			local dir = player:get_look_dir()
-			local obj = mcl_throwing.throw("mcl_throwing:flying_bobber", {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, 15)
+			local obj = mcl_throwing.throw("mcl_throwing:flying_bobber", {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, 15, player:get_player_name())
-			obj:get_luaentity()._thrower = player:get_player_name()
 		end
 end
 

mods/ITEMS/mcl_throwing/init.lua

@@ -24,7 +24,7 @@ local velocities = {
 	["mcl_throwing:ender_pearl_entity"] = 22,
 }
 
-mcl_throwing.throw = function(throw_item, pos, dir, velocity)
+mcl_throwing.throw = function(throw_item, pos, dir, velocity, thrower)
 	if velocity == nil then
 		velocity = velocities[throw_item]
 	end
@@ -36,16 +36,18 @@ mcl_throwing.throw = function(throw_item, pos, dir, velocity)
 	local obj = minetest.add_entity(pos, entity_mapping[itemstring])
 	obj:set_velocity({x=dir.x*velocity, y=dir.y*velocity, z=dir.z*velocity})
 	obj:set_acceleration({x=dir.x*-3, y=-GRAVITY, z=dir.z*-3})
+	if thrower then
+		obj:get_luaentity()._thrower = thrower
+	end
 	return obj
 end
 
 -- Throw item
-local throw_function = function(entity_name, velocity)
+local player_throw_function = function(entity_name, velocity)
 	local func = function(item, player, pointed_thing)
 		local playerpos = player:get_pos()
 		local dir = player:get_look_dir()
-		local obj = mcl_throwing.throw(item, {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, velocity)
+		local obj = mcl_throwing.throw(item, {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, velocity, player:get_player_name())
-		obj:get_luaentity()._thrower = player:get_player_name()
 		if not minetest.settings:get_bool("creative_mode") then
 			item:take_item()
 		end
@@ -62,9 +64,14 @@ end
 
 -- Staticdata handling because objects may want to be reloaded
 local get_staticdata = function(self)
+	local thrower
+	-- Only save thrower if it's a player name
+	if type(self._thrower) == "string" then
+		thrower = self._thrower
+	end
 	local data = {
 		_lastpos = self._lastpos,
-		_thrower = self._thrower,
+		_thrower = thrower,
 	}
 	return minetest.serialize(data)
 end
@@ -88,6 +95,7 @@ local snowball_ENTITY={
 
 	get_staticdata = get_staticdata,
 	on_activate = on_activate,
+	_thrower = nil,
 
 	_lastpos={},
 }
@@ -101,6 +109,7 @@ local egg_ENTITY={
 
 	get_staticdata = get_staticdata,
 	on_activate = on_activate,
+	_thrower = nil,
 
 	_lastpos={},
 }
@@ -136,6 +145,38 @@ local flying_bobber_ENTITY={
 	objtype="fishing",
 }
 
+local check_object_hit = function(self, pos, mob_damage)
+	for _,object in pairs(minetest.get_objects_inside_radius(pos, 1.5)) do
+
+		local entity = object:get_luaentity()
+
+		if entity
+		and entity.name ~= self.object:get_luaentity().name then
+
+			if object:is_player() and self._thrower ~= object:get_player_name() then
+				-- TODO: Deal knockback
+				self.object:remove()
+				return true
+			elseif entity._cmi_is_mob == true and (self._thrower ~= object) then
+				local dmg = {}
+				if mob_damage then
+					dmg = mob_damage(entity.name)
+				end
+
+				-- FIXME: Knockback is broken
+				object:punch(self.object, 1.0, {
+					full_punch_interval = 1.0,
+					damage_groups = dmg,
+				}, nil)
+
+				self.object:remove()
+				return true
+			end
+		end
+	end
+	return false
+end
+
 -- Snowball on_step()--> called when snowball is moving.
 local snowball_on_step = function(self, dtime)
 	self.timer=self.timer+dtime
@@ -150,6 +191,19 @@ local snowball_on_step = function(self, dtime)
 			return
 		end
 	end
+
+	local mob_damage = function(mobname)
+		if mobname == "mobs_mc:blaze" then
+			return {fleshy = 3}
+		else
+			return {}
+		end
+	end
+
+	if check_object_hit(self, pos, mob_damage) then
+		return
+	end
+
 	self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set _lastpos-->Node will be added at last pos outside the node
 end
 
@@ -160,7 +214,7 @@ local egg_on_step = function(self, dtime)
 	local node = minetest.get_node(pos)
 	local def = minetest.registered_nodes[node.name]
 
-	-- Destroy when hitting a solid node
+	-- Destroy when hitting a solid node with chance to spawn chicks
 	if self._lastpos.x~=nil then
 		if (def and def.walkable) or not def then
 			-- 1/8 chance to spawn a chick
@@ -204,6 +258,12 @@ local egg_on_step = function(self, dtime)
 			return
 		end
 	end
+
+	-- Destroy when hitting a mob or player (no chick spawning)
+	if check_object_hit(self, pos) then
+		return
+	end
+
 	self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
 end
 
@@ -347,7 +407,7 @@ minetest.register_craftitem("mcl_throwing:snowball", {
 	inventory_image = "mcl_throwing_snowball.png",
 	stack_max = 16,
 	groups = { weapon_ranged = 1 },
-	on_use = throw_function("mcl_throwing:snowball_entity"),
+	on_use = player_throw_function("mcl_throwing:snowball_entity"),
 	_on_dispense = dispense_function,
 })
 
@@ -358,7 +418,7 @@ minetest.register_craftitem("mcl_throwing:egg", {
 	_doc_items_usagehelp = how_to_throw,
 	inventory_image = "mcl_throwing_egg.png",
 	stack_max = 16,
-	on_use = throw_function("mcl_throwing:egg_entity"),
+	on_use = player_throw_function("mcl_throwing:egg_entity"),
 	_on_dispense = dispense_function,
 	groups = { craftitem = 1 },
 })
@@ -371,7 +431,7 @@ minetest.register_craftitem("mcl_throwing:ender_pearl", {
 	wield_image = "mcl_throwing_ender_pearl.png",
 	inventory_image = "mcl_throwing_ender_pearl.png",
 	stack_max = 16,
-	on_use = throw_function("mcl_throwing:ender_pearl_entity"),
+	on_use = player_throw_function("mcl_throwing:ender_pearl_entity"),
 	groups = { transport = 1 },
 })