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https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-12-12 11:39:32 +01:00
223 lines
6 KiB
Lua
223 lines
6 KiB
Lua
--
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-- Snowballs and other throwable items
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--
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local GRAVITY = tonumber(minetest.setting_get("movement_gravity"))
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local entity_mapping = {
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["mcl_throwing:snowball"] = "mcl_throwing:snowball_entity",
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["mcl_throwing:egg"] = "mcl_throwing:egg_entity",
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["mcl_throwing:ender_pearl"] = "mcl_throwing:ender_pearl_entity",
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}
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local velocities = {
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["mcl_throwing:snowball_entity"] = 22,
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["mcl_throwing:egg_entity"] = 22,
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["mcl_throwing:ender_pearl_entity"] = 22,
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}
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mcl_throwing.throw = function(throw_item, pos, dir, velocity)
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if velocity == nil then
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velocity = velocities[entity_name]
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end
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if velocity == nil then
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velocity = 22
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end
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local itemstring = ItemStack(throw_item):get_name()
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local obj = minetest.add_entity(pos, entity_mapping[itemstring])
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obj:setvelocity({x=dir.x*velocity, y=dir.y*velocity, z=dir.z*velocity})
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obj:setacceleration({x=dir.x*-3, y=-GRAVITY, z=dir.z*-3})
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return obj
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end
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-- Throw item
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local throw_function = function(entity_name, velocity)
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local func = function(item, player, pointed_thing)
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local playerpos = player:getpos()
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local dir = player:get_look_dir()
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local obj = mcl_throwing.throw(item, {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, velocity)
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obj:get_luaentity()._thrower = player:get_player_name()
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if not minetest.setting_getbool("creative_mode") then
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item:take_item()
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end
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return item
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end
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return func
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end
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-- Staticdata handling because objects may want to be reloaded
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local get_staticdata = function(self)
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local data = {
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_lastpos = self._lastpos,
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_thrower = self._thrower,
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}
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return minetest.serialize(data)
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end
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local on_activate = function(self, staticdata, dtime_s)
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local data = minetest.deserialize(staticdata)
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if data then
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self._lastpos = data._lastpos
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self._thrower = data._thrower
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end
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end
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-- The snowball entity
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local snowball_ENTITY={
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physical = false,
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timer=0,
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textures = {"mcl_throwing_snowball.png"},
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visual_size = {x=0.5, y=0.5},
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collisionbox = {0,0,0,0,0,0},
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get_staticdata = get_staticdata,
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on_activate = on_activate,
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_lastpos={},
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}
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local egg_ENTITY={
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physical = false,
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timer=0,
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textures = {"mcl_throwing_egg.png"},
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visual_size = {x=0.45, y=0.45},
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collisionbox = {0,0,0,0,0,0},
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get_staticdata = get_staticdata,
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on_activate = on_activate,
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_lastpos={},
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}
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-- Ender pearl entity
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local pearl_ENTITY={
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physical = false,
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timer=0,
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textures = {"mcl_throwing_ender_pearl.png"},
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visual_size = {x=0.9, y=0.9},
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collisionbox = {0,0,0,0,0,0},
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get_staticdata = get_staticdata,
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on_activate = on_activate,
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_lastpos={},
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_thrower = nil, -- Player ObjectRef of the player who threw the ender pearl
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}
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-- Snowball on_step()--> called when snowball is moving.
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local snowball_on_step = function(self, dtime)
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self.timer=self.timer+dtime
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local pos = self.object:getpos()
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local node = minetest.get_node(pos)
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local def = minetest.registered_nodes[node.name]
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-- Destroy when hitting a solid node
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if self._lastpos.x~=nil then
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if (def and def.walkable) or not def then
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self.object:remove()
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return
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end
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end
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self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set _lastpos-->Node will be added at last pos outside the node
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end
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-- Movement function of egg
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local egg_on_step = function(self, dtime)
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self.timer=self.timer+dtime
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local pos = self.object:getpos()
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local node = minetest.get_node(pos)
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local def = minetest.registered_nodes[node.name]
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-- Destroy when hitting a solid node
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if self._lastpos.x~=nil then
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if (def and def.walkable) or not def then
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-- 1/8 chance to spawn a chick
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-- FIXME: Spawn chicks instead of chickens
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-- FIXME: Chicks have a quite good chance to spawn in walls
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local r = math.random(1,8)
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if r == 1 then
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minetest.add_entity(self._lastpos, "mobs_mc:chicken")
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-- BONUS ROUND: 1/32 chance to spawn 3 additional chicks
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local r = math.random(1,32)
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if r == 1 then
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local offsets = {
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{ x=0.7, y=0, z=0 },
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{ x=-0.7, y=0, z=-0.7 },
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{ x=-0.7, y=0, z=0.7 },
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}
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for o=1, 3 do
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local pos = vector.add(self._lastpos, offsets[o])
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minetest.add_entity(pos, "mobs_mc:chicken")
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end
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end
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end
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self.object:remove()
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return
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end
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end
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self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
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end
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-- Movement function of ender pearl
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local pearl_on_step = function(self, dtime)
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self.timer=self.timer+dtime
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local pos = self.object:getpos()
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local node = minetest.get_node(pos)
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local def = minetest.registered_nodes[node.name]
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-- Destroy when hitting a solid node
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if self._lastpos.x~=nil then
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if (def and def.walkable) or not def then
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local player = minetest.get_player_by_name(self._thrower)
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if player then
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-- Teleport and hurt player
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player:setpos(pos)
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player:set_hp(player:get_hp() - 5)
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end
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self.object:remove()
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return
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end
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end
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self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
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end
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snowball_ENTITY.on_step = snowball_on_step
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egg_ENTITY.on_step = egg_on_step
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pearl_ENTITY.on_step = pearl_on_step
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minetest.register_entity("mcl_throwing:snowball_entity", snowball_ENTITY)
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minetest.register_entity("mcl_throwing:egg_entity", egg_ENTITY)
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minetest.register_entity("mcl_throwing:ender_pearl_entity", pearl_ENTITY)
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-- Snowball
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minetest.register_craftitem("mcl_throwing:snowball", {
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description = "Snowball",
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inventory_image = "mcl_throwing_snowball.png",
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stack_max = 16,
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on_use = throw_function("mcl_throwing:snowball_entity"),
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on_construct = function(pos)
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pos.y = pos.y - 1
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if minetest.get_node(pos).name == "default:dirt_with_grass" then
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minetest.set_node(pos, {name="default:dirt_with_snow"})
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end
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end,
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})
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-- Egg
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minetest.register_craftitem("mcl_throwing:egg", {
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description = "Egg",
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inventory_image = "mcl_throwing_egg.png",
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stack_max = 16,
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on_use = throw_function("mcl_throwing:egg_entity"),
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groups = { craftitem = 1 },
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})
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-- Ender Pearl
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minetest.register_craftitem("mcl_throwing:ender_pearl", {
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description = "Ender Pearl",
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wield_image = "mcl_throwing_ender_pearl.png",
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inventory_image = "mcl_throwing_ender_pearl.png",
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stack_max = 16,
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on_use = throw_function("mcl_throwing:ender_pearl_entity"),
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})
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