Replace MineClone2 fire with Minetest Game ABMs
ABMs have better performance than the laggy timer-based implementation.
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@ -124,82 +124,6 @@ minetest.register_node("mcl_fire:fire", {
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minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16}, true)
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end
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end,
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on_timer = function(pos)
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local node = minetest.get_node(pos)
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-- Age is a number from 0 to 15 and is increased every timer step.
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-- "old" fire is more likely to be extinguished
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local age = node.param2
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local flammables = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"group:flammable"})
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local below = minetest.get_node({x=pos.x, y=pos.z-1, z=pos.z})
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local below_is_flammable = minetest.get_item_group(below.name, "flammable") > 0
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-- Extinguish fire
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if (not fire_enabled) and (math.random(1,3) == 1) then
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minetest.remove_node(pos)
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return
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end
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if age == 15 and not below_is_flammable then
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minetest.remove_node(pos)
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return
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elseif age > 3 and #flammables == 0 and not below_is_flammable and math.random(1,4) == 1 then
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minetest.remove_node(pos)
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return
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end
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local age_add = 1
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-- If fire spread is disabled, we have to skip the "destructive" code
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if (not fire_enabled) then
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if age + age_add <= 15 then
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node.param2 = age + age_add
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minetest.set_node(pos, node)
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end
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-- Restart timer
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fire_timer(pos)
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return
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end
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-- Spawn fire to nearby flammable nodes
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local is_next_to_flammable = minetest.find_node_near(pos, 2, {"group:flammable"}) ~= nil
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if is_next_to_flammable and math.random(1,2) == 1 then
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-- The fire we spawn copies the age of this fire.
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-- This prevents fire from spreading infinitely far as the fire fire dies off
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-- quicker the further it has spreaded.
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local age_next = math.min(15, age + math.random(0, 1))
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-- Select random type of fire spread
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local burntype = math.random(1,2)
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if burntype == 1 then
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-- Spawn fire in air
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local nodes = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"air"})
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while #nodes > 0 do
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local r = math.random(1, #nodes)
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if minetest.find_node_near(nodes[r], 1, {"group:flammable"}) then
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spawn_fire(nodes[r], age_next)
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break
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else
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table.remove(nodes, r)
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end
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end
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else
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-- Burn flammable block
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local nodes = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"group:flammable"})
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if #nodes > 0 then
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local r = math.random(1, #nodes)
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local nn = minetest.get_node(nodes[r]).name
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local ndef = minetest.registered_nodes[nn]
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local fgroup = minetest.get_item_group(nn, "flammable")
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if ndef and ndef._on_burn then
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ndef._on_burn(nodes[r])
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elseif fgroup ~= -1 then
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spawn_fire(nodes[r], age_next)
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end
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end
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end
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end
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-- Regular age increase
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if age + age_add <= 15 then
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node.param2 = age + age_add
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minetest.set_node(pos, node)
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end
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-- Restart timer
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fire_timer(pos)
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end,
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drop = "",
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sounds = {},
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-- Turn into eternal fire on special blocks, light Nether portal (if possible), start burning timer
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@ -255,29 +179,7 @@ minetest.register_node("mcl_fire:eternal_fire", {
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minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16}, true)
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end
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end,
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on_timer = function(pos)
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if fire_enabled then
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local airs = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"air"})
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while #airs > 0 do
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local r = math.random(1, #airs)
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if minetest.find_node_near(airs[r], 1, {"group:flammable"}) then
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local node = minetest.get_node(airs[r])
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local age = node.param2
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local age_next = math.min(15, age + math.random(0, 1))
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spawn_fire(airs[r], age_next)
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break
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else
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table.remove(airs, r)
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end
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end
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end
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-- Restart timer
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fire_timer(pos)
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end,
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-- Start burning timer and light Nether portal (if possible)
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on_construct = function(pos)
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fire_timer(pos)
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if minetest.get_modpath("mcl_portals") then
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mcl_portals.light_nether_portal(pos)
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end
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@ -402,6 +304,31 @@ if flame_sound then
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end
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-- Set pointed_thing on (normal) fire.
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-- * pointed_thing: Pointed thing to ignite
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-- * player: Player who sets fire or nil if nobody
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-- * allow_on_fire: If false, can't ignite fire on fire (default: true)
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mcl_fire.set_fire = function(pointed_thing, player, allow_on_fire)
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local pname
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if player == nil then
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pname = ""
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else
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pname = player:get_player_name()
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end
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local n = minetest.get_node(pointed_thing.above)
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local nu = minetest.get_node(pointed_thing.under)
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if allow_on_fire == false and minetest.get_item_group(nu.name, "fire") ~= 0 then
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return
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end
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if minetest.is_protected(pointed_thing.above, pname) then
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minetest.record_protection_violation(pointed_thing.above, pname)
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return
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end
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if n.name == "air" then
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minetest.add_node(pointed_thing.above, {name="mcl_fire:fire"})
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end
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end
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--
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-- ABMs
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--
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@ -508,31 +435,45 @@ else -- Fire enabled
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end,
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})
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end
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-- Ignite neighboring nodes, add basic flames
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minetest.register_abm({
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label = "Ignite flame",
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nodenames = {"group:flammable"},
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neighbors = {"mcl_fire:fire","mcl_fire:eternal_fire","mcl_core:lava_source","mcl_core:lava_flowing","mcl_nether:nether_lava_source","mcl_nether:nether_lava_flowing",},
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interval = 7,
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chance = 12,
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catch_up = false,
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action = function(pos)
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local p = minetest.find_node_near(pos, 1, {"air"})
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if p then
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minetest.set_node(p, {name = "mcl_fire:fire"})
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end
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end
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})
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-- Set pointed_thing on (normal) fire.
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-- * pointed_thing: Pointed thing to ignite
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-- * player: Player who sets fire or nil if nobody
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-- * allow_on_fire: If false, can't ignite fire on fire (default: true)
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mcl_fire.set_fire = function(pointed_thing, player, allow_on_fire)
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local pname
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if player == nil then
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pname = ""
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-- Remove flammable nodes around basic flame
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minetest.register_abm({
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label = "Remove flammable nodes",
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nodenames = {"mc_fire:fire"},
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neighbors = "group:flammable",
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interval = 5,
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chance = 18,
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catch_up = false,
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action = function(pos)
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local p = minetest.find_node_near(pos, 1, {"group:flammable"})
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if not p then
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return
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end
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local flammable_node = minetest.get_node(p)
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local def = minetest.registered_nodes[flammable_node.name]
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if def.on_burn then
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def.on_burn(p)
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else
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pname = player:get_player_name()
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minetest.remove_node(p)
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minetest.check_for_falling(p)
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end
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local n = minetest.get_node(pointed_thing.above)
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local nu = minetest.get_node(pointed_thing.under)
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if allow_on_fire == false and minetest.get_item_group(nu.name, "fire") ~= 0 then
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return
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end
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if minetest.is_protected(pointed_thing.above, pname) then
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minetest.record_protection_violation(pointed_thing.above, pname)
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return
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end
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if n.name == "air" then
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minetest.add_node(pointed_thing.above, {name="mcl_fire:fire"})
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end
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})
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end
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minetest.register_lbm({
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