forked from MineClone5/MineClone5
401 lines
11 KiB
Lua
401 lines
11 KiB
Lua
-- Global namespace for functions
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mcl_fire = {}
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--
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-- Items
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--
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-- Flame nodes
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local fire_help = "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."
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local eternal_fire_help = "Eternal fire is a damaging and destructive block. 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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minetest.register_node("mcl_fire:fire", {
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description = "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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groups = {fire = 1, dig_immediate = 3, not_in_creative_inventory = 1, dig_by_piston=1},
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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 then
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minetest.remove_node(pos)
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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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on_construct = 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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_mcl_blast_resistance = 0,
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})
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minetest.register_node("mcl_fire:eternal_fire", {
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description = "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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groups = {fire = 1, dig_immediate = 3, not_in_creative_inventory = 1, dig_by_piston = 1},
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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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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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-- 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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on_construct = 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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sounds = {},
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drop = "",
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_mcl_blast_resistance = 0,
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})
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-- Also make lava set fire to air blocks above
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minetest.override_item("mcl_core:lava_source", {
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on_timer = function(pos)
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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", "group:flammable_lava"}) 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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-- Restart timer
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minetest.get_node_timer(pos):start(math.random(5, 10))
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end,
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on_construct = function(pos)
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minetest.get_node_timer(pos):start(math.random(5, 10))
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end
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})
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--
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-- Sound
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--
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local flame_sound = minetest.setting_getbool("flame_sound")
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if flame_sound == nil then
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-- Enable if no setting present
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flame_sound = true
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end
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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:getpos()
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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_stop(handles[player_name])
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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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local fire_enabled = minetest.setting_getbool("enable_fire")
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if fire_enabled == nil then
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-- New setting not specified, check for old setting.
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-- If old setting is also not specified, 'not nil' is true.
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fire_enabled = not minetest.setting_getbool("disable_fire")
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end
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if not fire_enabled then
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-- Remove fire only if fire disabled
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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 = 7,
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chance = 1,
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catch_up = false,
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action = minetest.remove_node,
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})
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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 = {"mcl_core:lava_source"},
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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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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", "group:flammable_lava"}) 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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else -- Fire enabled
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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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-- Spawn eternal fire when using flint and steel on netherrack
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local eternal_override = {
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after_destruct = function(pos, oldnode)
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pos.y = pos.y + 1
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if minetest.get_node(pos).name == "mcl_fire:eternal_fire" then
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minetest.remove_node(pos)
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end
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end,
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_on_ignite = function(pos, player)
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local flame_pos = {x = pos.x, y = pos.y + 1, z = pos.z}
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if minetest.get_node(flame_pos).name == "air" then
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minetest.set_node(flame_pos, {name = "mcl_fire:eternal_fire"})
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end
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end,
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}
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if minetest.get_modpath("mcl_nether") then
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minetest.override_item("mcl_nether:netherrack", eternal_override)
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end
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-- Set pointed_thing on (normal) fire
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mcl_fire.set_fire = function(pointed_thing)
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local n = minetest.get_node(pointed_thing.above)
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if n.name ~= "" and n.name == "air" and not minetest.is_protected(pointed_thing.above, "fire") 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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