mods/fireworks/init.lua

   1 local colors ={
   2     "red",
   3     "white",
   4     "blue"
   5 }
   6
   7 local function fireworks_pop(pos)
   8     for _,color in pairs(colors) do
   9         minetest.add_particlespawner({
  10             amount = 15,
  11             time = 0.001,
  12             minpos = pos,
  13             maxpos = pos,
  14             minvel = vector.new(-16,-16,-16),
  15             maxvel = vector.new(16,16,16),
  16             minacc = {x=0, y=0, z=0},
  17             maxacc = {x=0, y=0, z=0},
  18             minexptime = 1.1,
  19             maxexptime = 1.5,
  20             minsize = 1,
  21             maxsize = 2,
  22             collisiondetection = false,
  23             collision_removal = false,
  24             vertical = false,
  25             texture = "smoke.png^[colorize:"..color..":255",
  26         })
  27     end
  28     minetest.sound_play("fireworks_pop",{pos=pos,pitch=math.random(80,100)/100,gain=6.0,max_hear_distance = 128})
  29 end
  30
  31
  32 minetest.register_entity("fireworks:rocket", {
  33         initial_properties = {
  34                 hp_max = 1,
  35                 physical = true,
  36                 collide_with_objects = false,
  37                 collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
  38                 visual = "sprite",
  39                 visual_size = {x = 1, y = 1},
  40                 textures = {"fireworks.png"},
  41                 is_visible = true,
  42                 pointable = true,
  43         },
  44
  45     timer = 0,
  46
  47         on_activate = function(self, staticdata, dtime_s)
  48         self.object:set_acceleration(vector.new(0,50,0))
  49         minetest.add_particlespawner({
  50             amount = 30,
  51             time = 1,
  52             minpos = pos,
  53             maxpos = pos,
  54             minvel = vector.new(0,-20,0),
  55             maxvel = vector.new(0,-20,0),
  56             minacc = {x=0, y=0, z=0},
  57             maxacc = {x=0, y=0, z=0},
  58             minexptime = 1.1,
  59             maxexptime = 1.5,
  60             minsize = 1,
  61             maxsize = 2,
  62             collisiondetection = false,
  63             collision_removal = false,
  64             vertical = false,
  65             attached = self.object,
  66             texture = "smoke.png",
  67         })
  68         minetest.sound_play("fireworks_launch",{object=self.object,pitch=math.random(80,100)/100})
  69         end,
  70
  71         sound_played = false,
  72         on_step = function(self, dtime)
  73         self.timer = self.timer + dtime
  74         if self.timer >= 1 then
  75             fireworks_pop(self.object:get_pos())
  76             self.object:remove()
  77         end
  78         end,
  79 })
  80
  81
  82 minetest.register_craftitem("fireworks:rocket", {
  83         description = "Fireworks",
  84         inventory_image = "fireworks.png",
  85         wield_image = "fireworks.png",
  86         on_place = function(itemstack, placer, pointed_thing)
  87                 if not pointed_thing.type == "node" then
  88                         return
  89                 end
  90
  91                 minetest.add_entity(pointed_thing.above, "fireworks:rocket")
  92
  93                 itemstack:take_item()
  94
  95                 return itemstack
  96         end,
  97 })
  98
  99 minetest.register_craft({
 100         type = "shapeless",
 101         output = "fireworks:rocket",
 102         recipe = {"main:paper","mob:gunpowder"},
 103 })