forked from VoxeLibre/VoxeLibre
640 lines
19 KiB
Lua
640 lines
19 KiB
Lua
-- Global namespace for functions
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mcl_fire = {}
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local modpath = minetest.get_modpath(minetest.get_current_modname())
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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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local has_mcl_portals = minetest.get_modpath("mcl_portals")
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local set_node = minetest.set_node
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local get_node = minetest.get_node
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local add_node = minetest.add_node
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local remove_node = minetest.remove_node
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local swap_node = minetest.swap_node
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local get_node_or_nil = minetest.get_node_or_nil
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local find_nodes_in_area = minetest.find_nodes_in_area
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local find_node_near = minetest.find_node_near
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local get_item_group = minetest.get_item_group
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local get_connected_players = minetest.get_connected_players
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local vector = vector
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local math = math
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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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-- 3 exptime variants because the animation is not tied to particle expiration time.
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-- 3 colorized variants to imitate minecraft's
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local smoke_pdef_base = {
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amount = 0.001,
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time = 0,
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-- minpos = vector.add(pos, { x = -0.45, y = -0.45, z = -0.45 }),
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-- maxpos = vector.add(pos, { x = 0.45, y = 0.45, z = 0.45 }),
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minvel = { x = -0.1, y = 0.3, z = -0.1 },
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maxvel = { x = 0.1, y = 1.6, z = 0.1 },
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-- minexptime = 3 exptime variants,
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-- maxexptime = 3 exptime variants
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minsize = 4.0,
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maxsize = 4.5,
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-- texture = "mcl_particles_smoke_anim.png^[colorize:#000000:(3 colourize variants)",
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animation = {
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type = "vertical_frames",
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aspect_w = 8,
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aspect_h = 8,
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-- length = 3 exptime variants
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},
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collisiondetection = true,
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}
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local smoke_pdef_cached = {}
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local spawn_smoke = function(pos)
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local min = math.min
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local new_minpos = vector.add(pos, { x = -0.45, y = -0.45, z = -0.45 })
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local new_maxpos = vector.add(pos, { x = 0.45, y = 0.45, z = 0.45 })
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-- populate the cache
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if not next(smoke_pdef_cached) then
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-- the last frame plays for 1/8 * N seconds, so we can take advantage of it
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-- to have varying exptime for each variant.
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local exptimes = { 0.75, 1.5, 4.0 }
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local colorizes = { "199", "209", "243" } -- round(78%, 82%, 90% of 256) - 1
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local id = 1
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for _,exptime in ipairs(exptimes) do
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for _,colorize in ipairs(colorizes) do
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smoke_pdef_base.minpos = new_minpos
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smoke_pdef_base.maxpos = new_maxpos
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smoke_pdef_base.maxexptime = exptime
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smoke_pdef_base.animation.length = exptime + 0.1
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-- minexptime must be set such that the last frame is actully rendered,
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-- even if its very short. Larger exptime -> larger range
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smoke_pdef_base.minexptime = min(exptime, (7.0/8.0 * (exptime + 0.1) + 0.1))
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smoke_pdef_base.texture = "mcl_particles_smoke_anim.png^[colorize:#000000:" ..colorize
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smoke_pdef_cached[id] = table.copy(smoke_pdef_base)
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mcl_particles.add_node_particlespawner(pos, smoke_pdef_cached[id], "high")
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id = id + 1
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end
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end
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-- cache already populated
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else
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for i, smoke_pdef in ipairs(smoke_pdef_cached) do
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smoke_pdef.minpos = new_minpos
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smoke_pdef.maxpos = new_maxpos
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mcl_particles.add_node_particlespawner(pos, smoke_pdef, "high")
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end
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end
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--[[ Old smoke pdef
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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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time = 0,
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minpos = vector.add(pos, { x = -0.45, y = -0.45, z = -0.45 }),
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maxpos = vector.add(pos, { x = 0.45, y = 0.45, z = 0.45 }),
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minvel = { x = 0, y = 0.5, z = 0 },
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maxvel = { x = 0, y = 0.6, z = 0 },
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minexptime = 2.0,
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maxexptime = 2.0,
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minsize = 3.0,
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maxsize = 4.0,
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texture = "mcl_particles_smoke_anim.png^[colorize:#000000:127",
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animation = {
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type = "vertical_frames",
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aspect_w = 8,
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aspect_h = 8,
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length = 2.1,
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},
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}, "high")
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-- ]]
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end
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--
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-- Items
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--
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-- Flame nodes
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-- Fire settings
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-- When enabled, fire destroys other blocks.
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local fire_enabled = minetest.settings:get_bool("enable_fire", true)
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-- Enable sound
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local flame_sound = minetest.settings:get_bool("flame_sound", true)
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-- Help texts
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local fire_help, eternal_fire_help
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if fire_enabled then
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fire_help = S("Fire is a damaging and destructive but short-lived kind of block. It will destroy and spread towards near flammable blocks, but fire will disappear when there is nothing to burn left. It will be extinguished by nearby water and rain. Fire can be destroyed safely by punching it, but it is hurtful if you stand directly in it. If a fire is started above netherrack or a magma block, it will immediately turn into an eternal fire.")
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else
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fire_help = S("Fire is a damaging but non-destructive short-lived kind of block. It will disappear when there is no flammable block around. Fire does not destroy blocks, at least not in this world. It will be extinguished by nearby water and rain. Fire can be destroyed safely by punching it, but it is hurtful if you stand directly in it. If a fire is started above netherrack or a magma block, it will immediately turn into an eternal fire.")
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end
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if fire_enabled then
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eternal_fire_help = S("Eternal fire is a damaging block that might create more fire. It will create fire around it when flammable blocks are nearby. Eternal fire can be extinguished by punches and nearby water blocks. Other than (normal) fire, eternal fire does not get extinguished on its own and also continues to burn under rain. Punching eternal fire is safe, but it hurts if you stand inside.")
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else
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eternal_fire_help = S("Eternal fire is a damaging block. Eternal fire can be extinguished by punches and nearby water blocks. Other than (normal) fire, eternal fire does not get extinguished on its own and also continues to burn under rain. Punching eternal fire is safe, but it hurts if you stand inside.")
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end
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local fire_death_messages = {
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N("@1 has been cooked crisp."),
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N("@1 felt the burn."),
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N("@1 died in the flames."),
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N("@1 died in a fire."),
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}
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local fire_timer = function(pos)
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minetest.get_node_timer(pos):start(math.random(3, 7))
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end
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local spawn_fire = function(pos, age)
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set_node(pos, {name="mcl_fire:fire", param2 = age})
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minetest.check_single_for_falling({x=pos.x, y=pos.y+1, z=pos.z})
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end
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minetest.register_node("mcl_fire:fire", {
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description = S("Fire"),
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_doc_items_longdesc = fire_help,
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drawtype = "firelike",
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tiles = {
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{
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name = "fire_basic_flame_animated.png",
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animation = {
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type = "vertical_frames",
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aspect_w = 16,
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aspect_h = 16,
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length = 1
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},
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},
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},
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inventory_image = "fire_basic_flame.png",
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paramtype = "light",
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light_source = minetest.LIGHT_MAX,
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walkable = false,
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buildable_to = true,
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sunlight_propagates = true,
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damage_per_second = 1,
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_mcl_node_death_message = fire_death_messages,
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groups = {fire = 1, dig_immediate = 3, not_in_creative_inventory = 1, dig_by_piston=1, destroys_items=1, set_on_fire=8},
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floodable = true,
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on_flood = function(pos, oldnode, newnode)
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if get_item_group(newnode.name, "water") ~= 0 then
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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 = 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 = 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 = get_node({x=pos.x, y=pos.z-1, z=pos.z})
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local below_is_flammable = 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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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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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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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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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 = 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 = 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 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 = 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 = get_node(nodes[r]).name
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local ndef = minetest.registered_nodes[nn]
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local fgroup = 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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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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on_construct = function(pos)
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local bpos = {x=pos.x, y=pos.y-1, z=pos.z}
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local under = get_node(bpos).name
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local dim = mcl_worlds.pos_to_dimension(bpos)
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if under == "mcl_nether:magma" or under == "mcl_nether:netherrack" or (under == "mcl_core:bedrock" and dim == "end") then
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swap_node(pos, {name = "mcl_fire:eternal_fire"})
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end
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if has_mcl_portals then
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mcl_portals.light_nether_portal(pos)
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end
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fire_timer(pos)
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spawn_smoke(pos)
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end,
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on_destruct = function(pos)
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mcl_particles.delete_node_particlespawners(pos)
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end,
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_mcl_blast_resistance = 0,
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})
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minetest.register_node("mcl_fire:eternal_fire", {
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description = S("Eternal Fire"),
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_doc_items_longdesc = eternal_fire_help,
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drawtype = "firelike",
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tiles = {
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{
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name = "fire_basic_flame_animated.png",
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animation = {
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type = "vertical_frames",
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aspect_w = 16,
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aspect_h = 16,
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length = 1
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},
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},
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},
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inventory_image = "fire_basic_flame.png",
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paramtype = "light",
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light_source = minetest.LIGHT_MAX,
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walkable = false,
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buildable_to = true,
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sunlight_propagates = true,
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damage_per_second = 1,
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_mcl_node_death_message = fire_death_messages,
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groups = {fire = 1, dig_immediate = 3, not_in_creative_inventory = 1, dig_by_piston = 1, destroys_items = 1, set_on_fire=8},
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floodable = true,
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on_flood = function(pos, oldnode, newnode)
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if get_item_group(newnode.name, "water") ~= 0 then
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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 = 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 find_node_near(airs[r], 1, {"group:flammable"}) then
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local node = 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 has_mcl_portals then --Calling directly minetest.get_modpath consumes 4x more compute time
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mcl_portals.light_nether_portal(pos)
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end
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spawn_smoke(pos)
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end,
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on_destruct = function(pos)
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mcl_particles.delete_node_particlespawners(pos)
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end,
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sounds = {},
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drop = "",
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_mcl_blast_resistance = 0,
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})
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--
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-- Sound
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--
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if flame_sound then
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local handles = {}
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local timer = 0
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-- Parameters
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local radius = 8 -- Flame node search radius around player
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local cycle = 3 -- Cycle time for sound updates
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-- Update sound for player
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function mcl_fire.update_player_sound(player)
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local player_name = player:get_player_name()
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-- Search for flame nodes in radius around player
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local ppos = player:get_pos()
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local areamin = vector.subtract(ppos, radius)
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local areamax = vector.add(ppos, radius)
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local fpos, num = find_nodes_in_area(
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areamin,
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areamax,
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{"mcl_fire:fire", "mcl_fire:eternal_fire"}
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)
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-- Total number of flames in radius
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local flames = (num["mcl_fire:fire"] or 0) +
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(num["mcl_fire:eternal_fire"] or 0)
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-- Stop previous sound
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if handles[player_name] then
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minetest.sound_fade(handles[player_name], -0.4, 0.0)
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handles[player_name] = nil
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end
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-- If flames
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if flames > 0 then
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-- Find centre of flame positions
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local fposmid = fpos[1]
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-- If more than 1 flame
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if #fpos > 1 then
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local fposmin = areamax
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local fposmax = areamin
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for i = 1, #fpos do
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local fposi = fpos[i]
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if fposi.x > fposmax.x then
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fposmax.x = fposi.x
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end
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if fposi.y > fposmax.y then
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fposmax.y = fposi.y
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end
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if fposi.z > fposmax.z then
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fposmax.z = fposi.z
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end
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if fposi.x < fposmin.x then
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fposmin.x = fposi.x
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end
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if fposi.y < fposmin.y then
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fposmin.y = fposi.y
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end
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if fposi.z < fposmin.z then
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fposmin.z = fposi.z
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end
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end
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fposmid = vector.divide(vector.add(fposmin, fposmax), 2)
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end
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-- Play sound
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local handle = minetest.sound_play(
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"fire_fire",
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{
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pos = fposmid,
|
|
to_player = player_name,
|
|
gain = math.min(0.06 * (1 + flames * 0.125), 0.18),
|
|
max_hear_distance = 32,
|
|
loop = true, -- In case of lag
|
|
}
|
|
)
|
|
-- Store sound handle for this player
|
|
if handle then
|
|
handles[player_name] = handle
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Cycle for updating players sounds
|
|
|
|
minetest.register_globalstep(function(dtime)
|
|
timer = timer + dtime
|
|
if timer < cycle then
|
|
return
|
|
end
|
|
|
|
timer = 0
|
|
local players = get_connected_players()
|
|
for n = 1, #players do
|
|
mcl_fire.update_player_sound(players[n])
|
|
end
|
|
end)
|
|
|
|
-- Stop sound and clear handle on player leave
|
|
|
|
minetest.register_on_leaveplayer(function(player)
|
|
local player_name = player:get_player_name()
|
|
if handles[player_name] then
|
|
minetest.sound_stop(handles[player_name])
|
|
handles[player_name] = nil
|
|
end
|
|
end)
|
|
end
|
|
|
|
|
|
--
|
|
-- ABMs
|
|
--
|
|
|
|
-- Extinguish all flames quickly with water and such
|
|
|
|
minetest.register_abm({
|
|
label = "Extinguish fire",
|
|
nodenames = {"mcl_fire:fire", "mcl_fire:eternal_fire"},
|
|
neighbors = {"group:puts_out_fire"},
|
|
interval = 3,
|
|
chance = 1,
|
|
catch_up = false,
|
|
action = function(pos, node, active_object_count, active_object_count_wider)
|
|
remove_node(pos)
|
|
minetest.sound_play("fire_extinguish_flame",
|
|
{pos = pos, max_hear_distance = 16, gain = 0.15}, true)
|
|
end,
|
|
})
|
|
|
|
|
|
-- Enable the following ABMs according to 'enable fire' setting
|
|
|
|
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
|
|
end
|
|
return false
|
|
end
|
|
|
|
if not fire_enabled then
|
|
|
|
-- Occasionally remove fire if fire disabled
|
|
-- NOTE: Fire is normally extinguished in timer function
|
|
minetest.register_abm({
|
|
label = "Remove disabled fire",
|
|
nodenames = {"mcl_fire:fire"},
|
|
interval = 10,
|
|
chance = 10,
|
|
catch_up = false,
|
|
action = remove_node,
|
|
})
|
|
|
|
else -- Fire enabled
|
|
|
|
-- Set fire to air nodes
|
|
minetest.register_abm({
|
|
label = "Ignite fire by lava",
|
|
nodenames = {"group:lava"},
|
|
neighbors = {"air"},
|
|
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"
|
|
})
|
|
end
|
|
end,
|
|
})
|
|
|
|
end
|
|
|
|
-- Set pointed_thing on (normal) fire.
|
|
-- * pointed_thing: Pointed thing to ignite
|
|
-- * player: Player who sets fire or nil if nobody
|
|
-- * allow_on_fire: If false, can't ignite fire on fire (default: true)
|
|
mcl_fire.set_fire = function(pointed_thing, player, allow_on_fire)
|
|
local pname
|
|
if player == nil then
|
|
pname = ""
|
|
else
|
|
pname = player:get_player_name()
|
|
end
|
|
local n = get_node(pointed_thing.above)
|
|
local nu = get_node(pointed_thing.under)
|
|
if allow_on_fire == false and get_item_group(nu.name, "fire") ~= 0 then
|
|
return
|
|
end
|
|
if minetest.is_protected(pointed_thing.above, pname) then
|
|
minetest.record_protection_violation(pointed_thing.above, pname)
|
|
return
|
|
end
|
|
if n.name == "air" then
|
|
add_node(pointed_thing.above, {name="mcl_fire:fire"})
|
|
end
|
|
end
|
|
|
|
minetest.register_lbm({
|
|
label = "Smoke particles from fire",
|
|
name = "mcl_fire:smoke",
|
|
nodenames = {"group:fire"},
|
|
run_at_every_load = true,
|
|
action = function(pos, node)
|
|
spawn_smoke(pos)
|
|
end,
|
|
})
|
|
|
|
minetest.register_alias("mcl_fire:basic_flame", "mcl_fire:fire")
|
|
minetest.register_alias("fire:basic_flame", "mcl_fire:fire")
|
|
minetest.register_alias("fire:permanent_flame", "mcl_fire:eternal_fire")
|
|
|
|
dofile(modpath.."/flint_and_steel.lua")
|
|
dofile(modpath.."/fire_charge.lua")
|