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Reimplement basic Minecraft-like fire spread
This commit is contained in:
cora
Nils Dagsson Moskopp
parent
4deca628dc
commit
c12076e74d
1 changed files with 39 additions and 91 deletions
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@ -5,29 +5,6 @@ mcl_fire = {}
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local S = minetest.get_translator("mcl_fire")
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local N = function(s) return s end
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-- inverse pyramid pattern above lava source, floor 1 of 2:
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local lava_fire=
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{
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{ x =-1, y = 1, z =-1},
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{ x =-1, y = 1, z = 0},
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{ x =-1, y = 1, z = 1},
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{ x = 0, y = 1, z =-1},
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{ x = 0, y = 1, z = 0},
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{ x = 0, y = 1, z = 1},
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{ x = 1, y = 1, z =-1},
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{ x = 1, y = 1, z = 0},
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{ x = 1, y = 1, z = 1}
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}
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local alldirs=
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{
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{ x =-1, y = 0, z = 0},
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{ x = 1, y = 0, z = 0},
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{ x = 0, y =-1, z = 0},
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{ x = 0, y = 1, z = 0},
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{ x = 0, y = 0, z =-1},
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{ x = 0, y = 0, z = 1}
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}
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local spawn_smoke = function(pos)
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mcl_particles.add_node_particlespawner(pos, {
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amount = 0.1,
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@ -359,16 +336,28 @@ minetest.register_abm({
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-- Enable the following ABMs according to 'enable fire' setting
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-- [...]a fire that is not adjacent to any flammable block does not spread, even to another flammable block within the normal range.
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-- https://minecraft.fandom.com/wiki/Fire#Spread
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local function has_flammable(pos)
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local npos, node
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for n, v in ipairs(alldirs) do
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npos = vector.add(pos, v)
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node = minetest.get_node_or_nil(npos)
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if node and node.name and minetest.get_item_group(node.name, "flammable") ~= 0 then
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return npos
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end
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return minetest.find_node_near(pos, 1, {"group:flammable"})
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end
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local function check_aircube(p1,p2)
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local nds=minetest.find_nodes_in_area(p1,p2,{"air"})
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for k,v in pairs(nds) do
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if has_flammable(v) then return v end
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end
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return false
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end
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-- [...] a fire block can turn any air block that is adjacent to a flammable block into a fire block. This can happen at a distance of up to one block downward, one block sideways (including diagonals), and four blocks upward of the original fire block (not the block the fire is on/next to).
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local function get_ignitable(pos)
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return check_aircube(vector.add(pos,vector.new(-1,-1,-1)),vector.add(pos,vector.new(1,4,1)))
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end
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-- Fire spreads from a still lava block similarly: any air block one above and up to one block sideways (including diagonals) or two above and two blocks sideways (including diagonals) that is adjacent to a flammable block may be turned into a fire block.
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local function get_ignitable_by_lava(pos)
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return check_aircube(vector.add(pos,vector.new(-1,1,-1)),vector.add(pos,vector.new(1,1,1))) or check_aircube(vector.add(pos,vector.new(-2,2,-2)),vector.add(pos,vector.new(2,2,2))) or nil
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end
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if not fire_enabled then
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@ -386,78 +375,37 @@ if not fire_enabled then
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else -- Fire enabled
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-- Set fire to air nodes
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minetest.register_abm({
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label = "Ignite fire by lava",
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nodenames = {"group:lava"},
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neighbors = {"air"},
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interval = 7,
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chance = 3,
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catch_up = false,
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action = function(pos)
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local i, dir, target, node, i2, f
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i = math.random(1,9)
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dir = lava_fire[i]
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target = {x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}
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node = minetest.get_node(target)
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if not node or node.name ~= "air" then
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i = ((i + math.random(0,7)) % 9) + 1
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dir = lava_fire[i]
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target = {x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}
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node = minetest.get_node(target)
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if not node or node.name ~= "air" then
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return
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end
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end
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i2 = math.random(1,15)
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if i2 < 10 then
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local dir2, target2, node2
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dir2 = lava_fire[i2]
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target2 = {x=target.x+dir2.x, y=target.y+dir2.y, z=target.z+dir2.z}
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node2 = minetest.get_node(target2)
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if node2 and node2.name == "air" then
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f = has_flammable(target2)
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if f then
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minetest.after(1, spawn_fire, {x=target2.x, y=target2.y, z=target2.z})
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minetest.add_particle({
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pos = vector.new({x=pos.x, y=pos.y+0.5, z=pos.z}),
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velocity={x=f.x-pos.x, y=math.max(f.y-pos.y,0.7), z=f.z-pos.z},
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expirationtime=1, size=1.5, collisiondetection=false,
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glow=minetest.LIGHT_MAX, texture="mcl_particles_flame.png"
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})
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return
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end
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end
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end
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f = has_flammable(target)
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if f then
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minetest.after(1, spawn_fire, {x=target.x, y=target.y, z=target.z})
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minetest.add_particle({
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pos = vector.new({x=pos.x, y=pos.y+0.5, z=pos.z}),
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velocity={x=f.x-pos.x, y=math.max(f.y-pos.y,0.25), z=f.z-pos.z},
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expirationtime=1, size=1, collisiondetection=false,
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glow=minetest.LIGHT_MAX, texture="mcl_particles_flame.png"
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})
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end
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end,
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})
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-- Ignite neighboring nodes, add basic flames
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-- Fire Spread
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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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nodenames ={"mcl_fire:fire","mcl_fire:eternal_fire"},
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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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local p = get_ignitable(pos)
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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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--lava fire spread
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minetest.register_abm({
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label = "Ignite fire by lava",
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nodenames = {"mcl_core:lava_source","mcl_nether:nether_lava_source"},
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neighbors = {"air","group:flammable"},
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interval = 7,
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chance = 3,
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catch_up = false,
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action = function(pos)
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local p=get_ignitable_by_lava(pos)
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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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-- 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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