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 --inner and outer part of square donut radius
   6 local inner = 24
   7 local outer = 80
   8 --the height in which the game will search the x and z chosen (NUMBER up, NUMBER down)
   9 local find_node_height = 32
  10
  11 --for debug testing to isolate mobs
  12 local spawn = true
  13
  14 local spawn_table = {"pig"}
  15 local dark_spawn_table = {"creeper","spider","big_slime","medium_slime","small_slime"}
  16 local nether_spawn_table = {"nitro_creeper"}
  17 local aether_spawn_table = {"phyg"}
  18
  19 local function spawn_mobs()
  20         print("---------------------------------------------")
  21         if spawn and global_mob_amount < mob_limit then
  22                 --check through players
  23                 for _,player in ipairs(minetest.get_connected_players()) do
  24                         local int = {-1,1}
  25                         local pos = vector.floor(vector.add(player:get_pos(),0.5))
  26
  27                         local x,z
  28
  29                         --this is used to determine the axis buffer from the player
  30                         local axis = math.random(0,1)
  31
  32                         --cast towards the direction
  33                         if axis == 0 then --x
  34                                 x = pos.x + math.random(inner,outer)*int[math.random(1,2)]
  35                                 z = pos.z + math.random(-outer,outer)
  36                         else --z
  37                                 z = pos.z + math.random(inner,outer)*int[math.random(1,2)]
  38                                 x = pos.x + math.random(-outer,outer)
  39                         end
  40
  41                         local spawner = {}
  42                         if pos.y >= 21000 then
  43                                 spawner = minetest.find_nodes_in_area_under_air(vector.new(x,pos.y-find_node_height,z), vector.new(x,pos.y+find_node_height,z), {"aether:grass"})
  44                         elseif pos.y <= -10033 and pos.y >= -20112 then
  45                                 spawner = minetest.find_nodes_in_area_under_air(vector.new(x,pos.y-find_node_height,z), vector.new(x,pos.y+find_node_height,z), {"nether:netherrack"})
  46                         else
  47                                 spawner = minetest.find_nodes_in_area_under_air(vector.new(x,pos.y-find_node_height,z), vector.new(x,pos.y+find_node_height,z), {"main:grass","main:sand","main:water"})
  48                         end
  49
  50                         --print(dump(spawner))
  51                         if table.getn(spawner) > 0 then
  52                                 local mob_pos = spawner[1]
  53                                 mob_pos.y = mob_pos.y + 1
  54                                 --aether spawning
  55                                 if mob_pos.y >= 21000 then
  56                                         local mob_spawning = aether_spawn_table[math.random(1,table.getn(aether_spawn_table))]
  57                                         print("Aether Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  58                                         minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  59                                 elseif mob_pos.y <= -10033 and mob_pos.y >= -20112 then
  60                                         local mob_spawning = nether_spawn_table[math.random(1,table.getn(nether_spawn_table))]
  61                                         print("Nether Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  62                                         minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  63                                 else
  64                                         local light_level = minetest.get_node_light(spawner[1])
  65                                         if light_level < 10 then
  66                                                 local mob_spawning = dark_spawn_table[math.random(1,table.getn(dark_spawn_table))]
  67                                                 print("Dark Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  68                                                 minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  69                                         else
  70                                                 local mob_spawning = spawn_table[math.random(1,table.getn(spawn_table))]
  71                                                 print("Light Spawning "..mob_spawning.." at: "..minetest.pos_to_string(mob_pos))
  72                                                 minetest.add_entity(mob_pos,"mob:"..mob_spawning)
  73                                         end
  74                                 end
  75                         end
  76                 end
  77         end
  78         minetest.after(6, function()
  79                 spawn_mobs()
  80         end)
  81 end
  82
  83 spawn_mobs()