diff --git a/mods/ITEMS/mcl_monster_spawner/init.lua b/mods/ITEMS/mcl_monster_spawner/init.lua index f29e771650..0d952146ca 100644 --- a/mods/ITEMS/mcl_monster_spawner/init.lua +++ b/mods/ITEMS/mcl_monster_spawner/init.lua @@ -37,6 +37,8 @@ local function set_doll_properties(doll, mob) doll:get_luaentity()._mob = mob end + + --[[ Public function: Setup the spawner at pos. This function blindly assumes there's actually a spawner at pos. If not, then the results are undefined. @@ -75,6 +77,121 @@ function mcl_monster_spawner.setup_spawner(pos, Mob, MinLight, MaxLight, MaxMobs -- Create doll local doll = minetest.add_entity({x=pos.x, y=pos.y-0.3, z=pos.z}, "mcl_monster_spawner:doll") set_doll_properties(doll, Mob) + + -- Start spawning very soon + local t = minetest.get_node_timer(pos) + t:start(2) +end + +-- Spawn monsters around pos +-- NOTE: The node is timer-based, rather than ABM-based. +local spawn_monsters = function(pos, elapsed) + + -- get meta + local meta = minetest.get_meta(pos) + local active = meta:get_int("active") + if active == 0 then + -- Spawner not active yet, do nothing + return + end + + -- get settings + local mob = meta:get_string("Mob") + local mlig = meta:get_int("MinLight") + local xlig = meta:get_int("MaxLight") + local num = meta:get_int("MaxMobsInArea") + local pla = meta:get_int("PlayerDistance") + local yof = meta:get_int("YOffset") + + -- if amount is 0 then do nothing + if num == 0 then + return + end + + -- are we spawning a registered mob? + if not mobs.spawning_mobs[mob] then + minetest.log("error", "[mobs] Monster Spawner: Mob doesn't exist: "..mob) + return + end + + -- check objects inside 8×8 area around spawner + local objs = minetest.get_objects_inside_radius(pos, 8) + local count = 0 + local ent = nil + + + local timer = minetest.get_node_timer(pos) + + -- spawn mob if player detected and in range + if pla > 0 then + + local in_range = 0 + local objs = minetest.get_objects_inside_radius(pos, pla) + + for _,oir in pairs(objs) do + + if oir:is_player() then + + in_range = 1 + + break + end + end + + -- player not found + if in_range == 0 then + -- Try again quickly + timer:start(2) + return + end + end + + -- count mob objects of same type in area + for k, obj in ipairs(objs) do + + ent = obj:get_luaentity() + + if ent and ent.name and ent.name == mob then + count = count + 1 + end + end + + -- Are there too many of same type? then fail + if count >= num then + timer:start(math.random(5, 20)) + return + end + + -- find air blocks within 8×3×8 nodes of spawner + local air = minetest.find_nodes_in_area( + {x = pos.x - 4, y = pos.y - 1 + yof, z = pos.z - 4}, + {x = pos.x + 4, y = pos.y + 1 + yof, z = pos.z + 4}, + {"air"}) + + -- spawn up to 4 mobs in random air blocks + if air then + for a=1, 4 do + if #air <= 0 then + -- We're out of space! Stop spawning + break + end + local air_index = math.random(#air) + local pos2 = air[air_index] + local lig = minetest.get_node_light(pos2) or 0 + + pos2.y = pos2.y + 0.5 + + -- only if light levels are within range + if lig >= mlig and lig <= xlig then + minetest.add_entity(pos2, mob) + end + table.remove(air, air_index) + end + end + + -- Spawn attempt done. Next spawn attempt much later + timer:start(math.random(10, 39.95)) + end minetest.register_node("mcl_monster_spawner:spawner", { @@ -112,6 +229,8 @@ minetest.register_node("mcl_monster_spawner:spawner", { end end, + on_timer = spawn_monsters, + on_receive_fields = function(pos, formname, fields, sender) if not fields.text or fields.text == "" then @@ -200,118 +319,3 @@ minetest.register_entity("mcl_monster_spawner:doll", doll_def) -local max_per_block = tonumber(minetest.setting_get("max_objects_per_block") or 99) - --- spawner abm -minetest.register_abm({ - label = "Monster Spawner spawning a monster", - nodenames = {"mcl_monster_spawner:spawner"}, - interval = 10, - chance = 4, - catch_up = false, - - action = function(pos, node, active_object_count, active_object_count_wider) - - -- return if too many entities already - if active_object_count_wider >= max_per_block then - return - end - - -- get meta and command - local meta = minetest.get_meta(pos) - local active = meta:get_int("active") - if active == 0 then - -- Spawner not active yet, do nothing - return - end - - -- get settings - local mob = meta:get_string("Mob") - local mlig = meta:get_int("MinLight") - local xlig = meta:get_int("MaxLight") - local num = meta:get_int("MaxMobsInArea") - local pla = meta:get_int("PlayerDistance") - local yof = meta:get_int("YOffset") - - -- if amount is 0 then do nothing - if num == 0 then - return - end - - -- are we spawning a registered mob? - if not mobs.spawning_mobs[mob] then - minetest.log("error", "[mobs] Monster Spawner: Mob doesn't exist: "..mob) - return - end - - -- check objects inside 8×8 area around spawner - local objs = minetest.get_objects_inside_radius(pos, 8) - local count = 0 - local ent = nil - - -- count mob objects of same type in area - for k, obj in ipairs(objs) do - - ent = obj:get_luaentity() - - if ent and ent.name and ent.name == mob then - count = count + 1 - end - end - - -- is there too many of same type? - if count >= num then - return - end - - -- spawn mob if player detected and in range - if pla > 0 then - - local in_range = 0 - local objs = minetest.get_objects_inside_radius(pos, pla) - - for _,oir in pairs(objs) do - - if oir:is_player() then - - in_range = 1 - - break - end - end - - -- player not found - if in_range == 0 then - return - end - end - - -- find air blocks within 8×3×8 nodes of spawner - local air = minetest.find_nodes_in_area( - {x = pos.x - 4, y = pos.y - 1 + yof, z = pos.z - 4}, - {x = pos.x + 4, y = pos.y + 1 + yof, z = pos.z + 4}, - {"air"}) - - -- spawn up to 4 mobs in random air blocks - if air then - for a=1, 4 do - if #air <= 0 then - -- We're out of space! Stop spawning - break - end - local air_index = math.random(#air) - local pos2 = air[air_index] - local lig = minetest.get_node_light(pos2) or 0 - - pos2.y = pos2.y + 0.5 - - -- only if light levels are within range - if lig >= mlig and lig <= xlig then - minetest.add_entity(pos2, mob) - end - table.remove(air, air_index) - end - end - - end -})