mods/treecapitator/init.lua

   1 treecaptitator = {}
   2
   3 -- Leafdecay
   4 local function leafdecay_after_destruct(pos, oldnode, def)
   5         for _, v in pairs(minetest.find_nodes_in_area(vector.subtract(pos, def.radius),
   6                         vector.add(pos, def.radius), def.leaves)) do
   7                 local node = minetest.get_node(v)
   8                 local timer = minetest.get_node_timer(v)
   9                 if node.param2 ~= 1 and not timer:is_started() then
  10                         timer:start(math.random())
  11                 end
  12         end
  13 end
  14
  15 local function leafdecay_on_timer(pos, def)
  16         if minetest.find_node_near(pos, def.radius, def.trunks) then
  17                 return false
  18         end
  19
  20         local node = minetest.get_node(pos)
  21         local drops = minetest.get_node_drops(node.name)
  22         for _, item in ipairs(drops) do
  23                 local is_leaf
  24                 for _, v in pairs(def.leaves) do
  25                         if v == item then
  26                                 is_leaf = true
  27                         end
  28                 end
  29                 if minetest.get_item_group(item, "leafdecay_drop") ~= 0 or
  30                                 not is_leaf then
  31                         minetest.add_item({
  32                                 x = pos.x - 0.5 + math.random(),
  33                                 y = pos.y - 0.5 + math.random(),
  34                                 z = pos.z - 0.5 + math.random(),
  35                         }, item)
  36                 end
  37         end
  38
  39         minetest.remove_node(pos)
  40         minetest.check_for_falling(pos)
  41
  42         minetest.add_particlespawner({
  43                 amount = 40,
  44                 time = 0.0001,
  45                 minpos = {x=pos.x-0.5, y=pos.y-0.5, z=pos.z-0.5},
  46                 maxpos = {x=pos.x+0.5, y=pos.y+0.5, z=pos.z+0.5},
  47                 minvel = {x=0, y=0, z=0},
  48                 maxvel = {x=0, y=0, z=0},
  49                 minacc = {x=0, y=0, z=0},
  50                 maxacc = {x=0, y=0, z=0},
  51                 minexptime = 0.5,
  52                 maxexptime = 1.5,
  53                 minsize = 1,
  54                 maxsize = 2,
  55                 collisiondetection = false,
  56                 vertical = false,
  57                 texture = "treecapitator.png"
  58         })
  59 end
  60
  61 function treecaptitator.register_leafdecay(def)
  62         assert(def.leaves)
  63         assert(def.trunks)
  64         assert(def.radius)
  65         for _, v in pairs(def.trunks) do
  66                 minetest.override_item(v, {
  67                         after_destruct = function(pos, oldnode)
  68                                 leafdecay_after_destruct(pos, oldnode, def)
  69                         end,
  70                 })
  71         end
  72         for _, v in pairs(def.leaves) do
  73                 minetest.override_item(v, {
  74                         on_timer = function(pos)
  75                                 leafdecay_on_timer(pos, def)
  76                         end,
  77                 })
  78         end
  79 end
  80
  81 ----------------------------- registration
  82 treecaptitator.register_leafdecay({
  83         trunks = {"main:tree"},
  84         leaves = {"main:leaves"},
  85         radius = 2,
  86 })