423 lines
12 KiB
Lua
423 lines
12 KiB
Lua
-- Global namespace for functions
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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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--
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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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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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-- Real light level: 15 (but Minetest caps at 14)
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light_source = 14,
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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 },
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floodable = true,
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on_flood = function(pos, oldnode, newnode)
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if minetest.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})
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end
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end,
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on_timer = function(pos)
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local airs = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"air"})
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if (#airs == 0) or ((not fire_enabled) and math.random(1,3) == 1) then
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minetest.remove_node(pos)
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return
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end
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if (not fire_enabled) then
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-- Restart timer
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minetest.get_node_timer(pos):start(math.random(3, 7))
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return
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end
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local burned = false
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if math.random(1,2) == 1 then
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while #airs > 0 do
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local r = math.random(1, #airs)
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if minetest.find_node_near(airs[r], 1, {"group:flammable"}) then
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minetest.set_node(airs[r], {name="mcl_fire:fire"})
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burned = true
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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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if not burned then
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if math.random(1,3) == 1 then
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minetest.remove_node(pos)
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return
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end
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end
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-- Restart timer
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minetest.get_node_timer(pos):start(math.random(3, 7))
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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 = minetest.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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minetest.swap_node(pos, {name = "mcl_fire:eternal_fire"})
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end
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if minetest.get_modpath("mcl_portals") then
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mcl_portals.light_nether_portal(pos)
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end
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minetest.get_node_timer(pos):start(math.random(3, 7))
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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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-- Real light level: 15 (but Minetest caps at 14)
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light_source = 14,
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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},
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floodable = true,
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on_flood = function(pos, oldnode, newnode)
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if minetest.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})
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end
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end,
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on_timer = function(pos)
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if fire_enabled then
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local airs = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y-1, z=pos.z-1}, {x=pos.x+1, y=pos.y+4, z=pos.z+1}, {"air"})
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while #airs > 0 do
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local r = math.random(1, #airs)
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if minetest.find_node_near(airs[r], 1, {"group:flammable"}) then
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minetest.set_node(airs[r], {name="mcl_fire:fire"})
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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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minetest.get_node_timer(pos):start(math.random(3, 7))
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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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minetest.get_node_timer(pos):start(math.random(3, 7))
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if minetest.get_modpath("mcl_portals") then
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mcl_portals.light_nether_portal(pos)
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end
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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 = minetest.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 = minetest.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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--
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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 flame",
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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})
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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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-- Set fire to air nodes (inverse pyramid pattern) above lava source
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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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interval = 7,
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chance = 2,
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catch_up = false,
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action = function(pos)
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local node = minetest.get_node(pos)
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local def = minetest.registered_nodes[node.name]
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-- Check if liquid source node
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if def and def.liquidtype ~= "source" then
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return
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end
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local function try_ignite(airs)
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while #airs > 0 do
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local r = math.random(1, #airs)
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if minetest.find_node_near(airs[r], 1, {"group:flammable"}) then
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minetest.set_node(airs[r], {name="mcl_fire:fire"})
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return true
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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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return false
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end
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local airs1 = minetest.find_nodes_in_area({x=pos.x-1, y=pos.y+1, z=pos.z-1}, {x=pos.x+1, y=pos.y+1, z=pos.z+1}, {"air"})
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local ok = try_ignite(airs1)
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if not ok then
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local airs2 = minetest.find_nodes_in_area({x=pos.x-2, y=pos.y+2, z=pos.z-2}, {x=pos.x+2, y=pos.y+2, z=pos.z+2}, {"air"})
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try_ignite(airs2)
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end
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end,
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})
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-- Turn flammable nodes around fire into fire
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minetest.register_abm({
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label = "Remove flammable nodes",
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nodenames = {"group: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, node, active_object_count, active_object_count_wider)
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local p = minetest.find_node_near(pos, 1, {"group:flammable"})
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if p then
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local flammable_node = minetest.get_node(p)
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local def = minetest.registered_nodes[flammable_node.name]
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if def.on_burn then
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def.on_burn(p)
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else
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minetest.set_node(p, {name="mcl_fire:fire"})
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minetest.check_for_falling(p)
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end
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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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mcl_fire.set_fire = function(pointed_thing, player)
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local pname
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if player == nil then
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pname = ""
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else
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pname = player:get_player_name()
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end
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local n = minetest.get_node(pointed_thing.above)
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if minetest.is_protected(pointed_thing.above, pname) then
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minetest.record_protection_violation(pointed_thing.above, pname)
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return
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end
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if n.name == "air" then
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minetest.add_node(pointed_thing.above, {name="mcl_fire:fire"})
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end
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end
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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_flame")
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dofile(minetest.get_modpath(minetest.get_current_modname()).."/flint_and_steel.lua")
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dofile(minetest.get_modpath(minetest.get_current_modname()).."/fire_charge.lua")
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