491 lines
14 KiB
Lua
491 lines
14 KiB
Lua
-- Global namespace for functions
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mcl_fire = {}
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local modname = minetest.get_current_modname()
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local modpath = minetest.get_modpath(modname)
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local S = minetest.get_translator(modname)
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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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local adjacents = {
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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 function shuffle_table(t)
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for i = #t, 1, -1 do
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local r = math.random(i)
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t[i], t[r] = t[r], t[i]
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end
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end
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shuffle_table(adjacents)
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local function has_flammable(pos)
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for k,v in pairs(adjacents) do
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local p=vector.add(pos,v)
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local n=minetest.get_node_or_nil(p)
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if n and minetest.get_item_group(n.name, "flammable") ~= 0 then
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return p
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end
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end
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end
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local smoke_pdef = {
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amount = 0.009,
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maxexptime = 4.0,
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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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minsize = 4.0,
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maxsize = 4.5,
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minrelpos = { x = -0.45, y = -0.45, z = -0.45 },
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maxrelpos = { x = 0.45, y = 0.45, z = 0.45 },
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}
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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 function spawn_fire(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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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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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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mcl_particles.spawn_smoke(pos, "fire", smoke_pdef)
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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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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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-- Start burning timer and light Nether portal (if possible)
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on_construct = function(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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mcl_particles.spawn_smoke(pos, "fire", smoke_pdef)
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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,
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to_player = player_name,
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gain = math.min(0.06 * (1 + flames * 0.125), 0.18),
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max_hear_distance = 32,
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loop = true, -- In case of lag
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}
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)
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-- Store sound handle for this player
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if handle then
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handles[player_name] = handle
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end
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end
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end
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-- Cycle for updating players sounds
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minetest.register_globalstep(function(dtime)
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timer = timer + dtime
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if timer < cycle then
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return
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end
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timer = 0
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local players = get_connected_players()
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for n = 1, #players do
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mcl_fire.update_player_sound(players[n])
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end
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end)
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-- Stop sound and clear handle on player leave
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minetest.register_on_leaveplayer(function(player)
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local player_name = player:get_player_name()
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if handles[player_name] then
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minetest.sound_stop(handles[player_name])
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handles[player_name] = nil
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end
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end)
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end
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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 check_aircube(p1,p2)
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local nds=minetest.find_nodes_in_area(p1,p2,{"air"})
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shuffle_table(nds)
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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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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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--
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-- ABMs
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--
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-- Extinguish all flames quickly with water and such
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minetest.register_abm({
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label = "Extinguish fire",
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nodenames = {"mcl_fire:fire", "mcl_fire:eternal_fire"},
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neighbors = {"group:puts_out_fire"},
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interval = 3,
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chance = 1,
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catch_up = false,
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action = function(pos, node, active_object_count, active_object_count_wider)
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minetest.remove_node(pos)
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minetest.sound_play("fire_extinguish_flame",
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{pos = pos, max_hear_distance = 16, gain = 0.15}, true)
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end,
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})
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-- Enable the following ABMs according to 'enable fire' setting
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if not fire_enabled then
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-- Occasionally remove fire if fire disabled
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-- NOTE: Fire is normally extinguished in timer function
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minetest.register_abm({
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label = "Remove disabled fire",
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nodenames = {"mcl_fire:fire"},
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interval = 10,
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chance = 10,
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catch_up = false,
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action = minetest.remove_node,
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})
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else -- Fire enabled
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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 ={"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 = get_ignitable(pos)
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if p then
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spawn_fire(p)
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shuffle_table(adjacents)
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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 = {"group:flammable"},
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interval = 15,
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chance = 9,
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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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spawn_fire(p)
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end
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end,
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})
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minetest.register_abm({
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label = "Remove fires",
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nodenames = {"mcl_fire:fire"},
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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=has_flammable(pos)
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if p then
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local n=minetest.get_node_or_nil(p)
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if n and minetest.get_item_group(n.name, "flammable") < 1 then
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minetest.remove_node(pos)
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end
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else
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minetest.remove_node(pos)
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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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nodenames = {"mcl_fire:fire","mcl_fire:eternal_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 = has_flammable(pos)
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if not p then
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return
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end
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local nn = minetest.get_node(p).name
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local def = minetest.registered_nodes[nn]
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local fgroup = minetest.get_item_group(nn, "flammable")
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if def and def._on_burn then
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def._on_burn(p)
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elseif fgroup ~= -1 then
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spawn_fire(p)
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minetest.check_for_falling(p)
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end
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end
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})
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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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function mcl_fire.set_fire(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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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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local n_pointed = minetest.get_node(pointed_thing.under)
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if allow_on_fire == false and get_item_group(n_pointed.name, "fire") ~= 0 then
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return
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end
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local n_fire_pos = minetest.get_node(pointed_thing.above)
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if n_fire_pos.name ~= "air" then
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return
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end
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local n_below = minetest.get_node(vector.offset(pointed_thing.above, 0, -1, 0))
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if minetest.get_item_group(n_below.name, "water") ~= 0 then
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return
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end
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add_node(pointed_thing.above, {name="mcl_fire:fire"})
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end
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minetest.register_lbm({
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label = "Smoke particles from fire",
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name = "mcl_fire:smoke",
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nodenames = {"group:fire"},
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run_at_every_load = true,
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action = function(pos, node)
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mcl_particles.spawn_smoke(pos, "fire", smoke_pdef)
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end,
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})
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minetest.register_alias("mcl_fire:basic_flame", "mcl_fire:fire")
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minetest.register_alias("fire:basic_flame", "mcl_fire:fire")
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minetest.register_alias("fire:permanent_flame", "mcl_fire:eternal_fire")
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dofile(modpath.."/flint_and_steel.lua")
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dofile(modpath.."/fire_charge.lua")
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