mods/mob/spawning.lua

   1 --this is where mob spawning is defined
   2
   3 --spawn mob in a square doughnut shaped radius
   4 local chance = 20
   5 local tick = 0.2
   6 local timer = 0
   7 --inner and outer part of square donut radius
   8 local inner = 24
   9 local outer = 128
  10
  11 --for debug testing to isolate mobs
  12 local spawn = true
  13
  14 local spawn_table = {"pig","slime"}
  15 local aether_spawn_table = {"flying_pig"}
  16 minetest.register_globalstep(function(dtime)
  17         if spawn then
  18         timer = timer + dtime
  19         if timer >= tick and math.random(1,chance) == chance then
  20                 --print("ticking")
  21                 timer = 0
  22                 --check through players
  23                 for _,player in ipairs(minetest.get_connected_players()) do
  24                         --don't spawn near dead players
  25                         if player:get_hp() > 0 then
  26
  27                                 --local mob_number = math.random(0,2)
  28
  29                                 local int = {-1,1}
  30                                 local pos = vector.floor(vector.add(player:getpos(),0.5))
  31
  32                                 local x,z
  33
  34                                 --this is used to determine the axis buffer from the player
  35                                 local axis = math.random(0,1)
  36
  37                                 --cast towards the direction
  38                                 if axis == 0 then --x
  39                                         x = pos.x + math.random(inner,outer)*int[math.random(1,2)]
  40                                         z = pos.z + math.random(-outer,outer)
  41                                 else --z
  42                                         z = pos.z + math.random(inner,outer)*int[math.random(1,2)]
  43                                         x = pos.x + math.random(-outer,outer)
  44                                 end
  45
  46                                 local spawner
  47                                 if pos.y >= 21000 then
  48                                         spawner = minetest.find_nodes_in_area_under_air(vector.new(x,pos.y-32,z), vector.new(x,pos.y+32,z), {"aether:grass"})
  49                                 else
  50                                         spawner = minetest.find_nodes_in_area_under_air(vector.new(x,pos.y-32,z), vector.new(x,pos.y+32,z), {"main:grass","main:sand","main:water"})
  51                                 end
  52
  53                                 --print(dump(spawner))
  54                                 if table.getn(spawner) > 0 then
  55                                         local mob_pos = spawner[1]
  56                                         --aether spawning
  57                                         if mob_pos.y >= 21000 then
  58                                                 mob_pos.y = mob_pos.y + 1
  59                                                 local mob_spawning = aether_spawn_table[1]
  60                                                 print("Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  61                                                 minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  62
  63                                         else
  64                                                 mob_pos.y = mob_pos.y + 1
  65                                                 local mob_spawning = spawn_table[math.random(1,2)]
  66                                                 print("Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  67                                                 minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  68                                         end
  69                                 end
  70                         end
  71                 end
  72         elseif timer > tick then
  73                 timer = 0
  74         end
  75         end
  76 end)