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NO11 merged 31 commits from MineClone5/MineClone5:master into master 2022-01-31 17:38:38 +01:00
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1 changed files with 103 additions and 149 deletions
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252
mods/ITEMS/mcl_fire/init.lua
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@ -37,7 +37,7 @@ local lava_fire=
{ x = 1, y = 1, z = 0},
{ x = 1, y = 1, z = 1}
}
local alldirs=
local adjacents =
{
{ x =-1, y = 0, z = 0},
{ x = 1, y = 0, z = 0},
@ -87,7 +87,7 @@ else
end
local function fire_timer(pos)
minetest.get_node_timer(pos):start(math.random(3, 7))
minetest.get_node_timer(pos):start(math.random(15, 45))
end
local function spawn_fire(pos, age)
@ -95,6 +95,23 @@ local function spawn_fire(pos, age)
minetest.check_single_for_falling({x=pos.x, y=pos.y+1, z=pos.z})
end
local function shuffle_adjacents()
for i = #adjacents, 1, -1 do
local r = math.random(i)
adjacents[i], adjacents[r] = adjacents[r], adjacents[i]
end
end
local function has_flammable(pos)
for k,v in pairs(adjacents) do
local p=vector.add(pos,v)
local n=minetest.get_node_or_nil(p)
if n and minetest.get_item_group(n.name, "flammable") ~= 0 then
return p
end
end
end
minetest.register_node("mcl_fire:fire", {
description = S("Fire"),
_doc_items_longdesc = fire_help,
@ -125,80 +142,12 @@ minetest.register_node("mcl_fire:fire", {
end
end,
on_timer = function(pos)
local node = get_node(pos)
-- Age is a number from 0 to 15 and is increased every timer step.
-- "old" fire is more likely to be extinguished
local age = node.param2
local flammables = 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"})
local below = get_node({x=pos.x, y=pos.z-1, z=pos.z})
local below_is_flammable = get_item_group(below.name, "flammable") > 0
-- Extinguish fire
if (not fire_enabled) and (math.random(1,3) == 1) then
remove_node(pos)
local p=has_flammable(pos)
if not p or minetest.get_item_group(minetest.get_node(p).name, "flammable") == -1 then
minetest.remove_node(pos)
return
end
if age == 15 and not below_is_flammable then
remove_node(pos)
return
elseif age > 3 and #flammables == 0 and not below_is_flammable and math.random(1,4) == 1 then
remove_node(pos)
return
end
local age_add = 1
-- If fire spread is disabled, we have to skip the "destructive" code
if (not fire_enabled) then
if age + age_add <= 15 then
node.param2 = age + age_add
set_node(pos, node)
end
-- Restart timer
fire_timer(pos)
return
end
-- Spawn fire to nearby flammable nodes
local is_next_to_flammable = find_node_near(pos, 2, {"group:flammable"}) ~= nil
if is_next_to_flammable and math.random(1,2) == 1 then
-- The fire we spawn copies the age of this fire.
-- This prevents fire from spreading infinitely far as the fire fire dies off
-- quicker the further it has spreaded.
local age_next = math.min(15, age + math.random(0, 1))
-- Select random type of fire spread
local burntype = math.random(1,2)
if burntype == 1 then
-- Spawn fire in air
local nodes = 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"})
while #nodes > 0 do
local r = math.random(1, #nodes)
if find_node_near(nodes[r], 1, {"group:flammable"}) then
spawn_fire(nodes[r], age_next)
break
else
table.remove(nodes, r)
end
end
else
-- Burn flammable block
local nodes = 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"})
if #nodes > 0 then
local r = math.random(1, #nodes)
local nn = get_node(nodes[r]).name
local ndef = minetest.registered_nodes[nn]
local fgroup = get_item_group(nn, "flammable")
if ndef and ndef._on_burn then
ndef._on_burn(nodes[r])
elseif fgroup ~= -1 then
spawn_fire(nodes[r], age_next)
end
end
end
end
-- Regular age increase
if age + age_add <= 15 then
node.param2 = age + age_add
set_node(pos, node)
end
-- Restart timer
fire_timer(pos)
return true --restart timer
end,
drop = "",
sounds = {},
@ -254,29 +203,8 @@ minetest.register_node("mcl_fire:eternal_fire", {
minetest.sound_play("fire_extinguish_flame", {pos = pos, gain = 0.25, max_hear_distance = 16}, true)
end
end,
on_timer = function(pos)
if fire_enabled then
local airs = 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"})
while #airs > 0 do
local r = math.random(1, #airs)
if find_node_near(airs[r], 1, {"group:flammable"}) then
local node = get_node(airs[r])
local age = node.param2
local age_next = math.min(15, age + math.random(0, 1))
spawn_fire(airs[r], age_next)
break
else
table.remove(airs, r)
end
end
end
-- Restart timer
fire_timer(pos)
end,
-- Start burning timer and light Nether portal (if possible)
-- light Nether portal (if possible)
on_construct = function(pos)
fire_timer(pos)
if has_mcl_portals then --Calling directly minetest.get_modpath consumes 4x more compute time
mcl_portals.light_nether_portal(pos)
end
@ -421,21 +349,39 @@ minetest.register_abm({
end,
})
--- Fire spread logic
-- Enable the following ABMs according to 'enable fire' setting
-- A fire that is not adjacent to any flammable block does not spread, even to another flammable block within the normal range.
-- 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).
-- 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.
-- https://minecraft.fandom.com/wiki/Fire#Spread
local function has_flammable(pos)
local npos, node
for n, v in ipairs(alldirs) do
npos = vector.add(pos, v)
node = get_node_or_nil(npos)
if node and node.name and get_item_group(node.name, "flammable") ~= 0 then
return npos
end
local function check_aircube(p1,p2)
local nds=minetest.find_nodes_in_area(p1,p2,{"air"})
for k,v in pairs(nds) do
if has_flammable(v) then return v end
end
return false
end
local function get_ignitable(pos)
return check_aircube(vector.add(pos,vector.new(-1,-1,-1)),vector.add(pos,vector.new(1,4,1)))
end
local function get_ignitable_by_lava(pos)
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
end
local function add_fire_particle(pos,f)
minetest.add_particle({
pos = vector.new({x=pos.x, y=pos.y+0.5, z=pos.z}),
velocity={x=f.x-pos.x, y=math.max(f.y-pos.y,0.25), z=f.z-pos.z},
expirationtime=1, size=1, collisiondetection=false,
glow=minetest.LIGHT_MAX, texture="mcl_particles_flame.png"
})
end
-- Enable the following ABMs according to 'enable fire' setting
if not fire_enabled then
-- Occasionally remove fire if fire disabled
@ -451,62 +397,70 @@ if not fire_enabled then
else -- Fire enabled
minetest.register_abm({
label = "Ignite flame",
nodenames ={"mcl_fire:fire","mcl_fire:eternal_fire"},
interval = 7,
chance = 12,
catch_up = false,
action = function(pos)
local p = get_ignitable(pos)
if p then
add_fire_particle(p,pos)
spawn_fire(p)
shuffle_adjacents()
end
end
})
-- Set fire to air nodes
minetest.register_abm({
label = "Ignite fire by lava",
nodenames = {"group:lava"},
neighbors = {"air"},
nodenames = {"mcl_core:lava_source","mcl_nether:nether_lava_source"},
neighbors = {"air","group:flammable"},
interval = 7,
chance = 3,
catch_up = false,
action = function(pos)
local i, dir, target, node, i2, f
i = math.random(1,9)
dir = lava_fire[i]
target = {x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}
node = get_node(target)
if not node or node.name ~= "air" then
i = ((i + math.random(0,7)) % 9) + 1
dir = lava_fire[i]
target = {x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}
node = get_node(target)
if not node or node.name ~= "air" then
return
end
end
i2 = math.random(1,15)
if i2 < 10 then
local dir2, target2, node2
dir2 = lava_fire[i2]
target2 = {x=target.x+dir2.x, y=target.y+dir2.y, z=target.z+dir2.z}
node2 = get_node(target2)
if node2 and node2.name == "air" then
f = has_flammable(target2)
if f then
minetest.after(1, spawn_fire, {x=target2.x, y=target2.y, z=target2.z})
minetest.add_particle({
pos = vector.new({x=pos.x, y=pos.y+0.5, z=pos.z}),
velocity={x=f.x-pos.x, y=math.max(f.y-pos.y,0.7), z=f.z-pos.z},
expirationtime=1, size=1.5, collisiondetection=false,
glow=minetest.LIGHT_MAX, texture="mcl_particles_flame.png"
})
return
end
end
end
f = has_flammable(target)
if f then
minetest.after(1, spawn_fire, {x=target.x, y=target.y, z=target.z})
minetest.add_particle({
pos = vector.new({x=pos.x, y=pos.y+0.5, z=pos.z}),
velocity={x=f.x-pos.x, y=math.max(f.y-pos.y,0.25), z=f.z-pos.z},
expirationtime=1, size=1, collisiondetection=false,
glow=minetest.LIGHT_MAX, texture="mcl_particles_flame.png"
})
local p=get_ignitable_by_lava(pos)
if p then
add_fire_particle(p,pos)
spawn_fire(p)
end
end,
})
-- Remove flammable nodes around basic flame
minetest.register_abm({
label = "Remove flammable nodes",
nodenames = {"mcl_fire:fire","mcl_fire:eternal_fire"},
neighbors = {"group:flammable"},
interval = 5,
chance = 18,
catch_up = false,
action = function(pos)
local p = has_flammable(pos)
if not p then
return
end
local nn = minetest.get_node(p).name
local def = minetest.registered_nodes[nn]
local fgroup = minetest.get_item_group(nn, "flammable")
if def and def._on_burn then
def._on_burn(p)
elseif fgroup ~= -1 then
add_fire_particle(p,pos)
spawn_fire(p)
fire_timer(p)
minetest.check_for_falling(p)
end
end
})
end
-- Set pointed_thing on (normal) fire.