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minetest_game/mods/fire/init.lua
Lars Hofhansl 8715b83ff0 Fire: Make explosions remove flames
TNT removes flammable nodes from the destruction radius and should
remove flames within it too because they lose their fuel and would
be removed by ABM later anyway.
2017-01-15 04:24:01 +00:00

360 lines
8.4 KiB
Lua

-- Global namespace for functions
fire = {}
--
-- Items
--
-- Flame nodes
minetest.register_node("fire:basic_flame", {
drawtype = "firelike",
tiles = {
{
name = "fire_basic_flame_animated.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 1
},
},
},
inventory_image = "fire_basic_flame.png",
paramtype = "light",
light_source = 13,
walkable = false,
buildable_to = true,
sunlight_propagates = true,
damage_per_second = 4,
groups = {igniter = 2, dig_immediate = 3, not_in_creative_inventory = 1},
on_timer = function(pos)
local f = minetest.find_node_near(pos, 1, {"group:flammable"})
if not f then
minetest.remove_node(pos)
return
end
-- Restart timer
return true
end,
drop = "",
on_construct = function(pos)
minetest.get_node_timer(pos):start(math.random(30, 60))
end,
})
minetest.register_node("fire:permanent_flame", {
description = "Permanent Flame",
drawtype = "firelike",
tiles = {
{
name = "fire_basic_flame_animated.png",
animation = {
type = "vertical_frames",
aspect_w = 16,
aspect_h = 16,
length = 1
},
},
},
inventory_image = "fire_basic_flame.png",
paramtype = "light",
light_source = 13,
walkable = false,
buildable_to = true,
sunlight_propagates = true,
damage_per_second = 4,
groups = {igniter = 2, dig_immediate = 3},
drop = "",
})
-- Flint and steel
minetest.register_tool("fire:flint_and_steel", {
description = "Flint and Steel",
inventory_image = "fire_flint_steel.png",
sound = {breaks = "default_tool_breaks"},
on_use = function(itemstack, user, pointed_thing)
local pt = pointed_thing
minetest.sound_play(
"fire_flint_and_steel",
{pos = pt.above, gain = 0.5, max_hear_distance = 8}
)
if pt.type == "node" then
local node_under = minetest.get_node(pt.under).name
local nodedef = minetest.registered_nodes[node_under]
if not nodedef then
return
end
local player_name = user:get_player_name()
if minetest.is_protected(pt.under, player_name) then
minetest.chat_send_player(player_name, "This area is protected")
return
end
if nodedef.on_ignite then
nodedef.on_ignite(pt.under, user)
elseif minetest.get_item_group(node_under, "flammable") >= 1
and minetest.get_node(pt.above).name == "air" then
minetest.set_node(pt.above, {name = "fire:basic_flame"})
end
end
if not minetest.setting_getbool("creative_mode") then
-- Wear tool
local wdef = itemstack:get_definition()
itemstack:add_wear(1000)
-- Tool break sound
if itemstack:get_count() == 0 and wdef.sound and wdef.sound.breaks then
minetest.sound_play(wdef.sound.breaks, {pos = pt.above, gain = 0.5})
end
return itemstack
end
end
})
minetest.register_craft({
output = "fire:flint_and_steel",
recipe = {
{"default:flint", "default:steel_ingot"}
}
})
-- Override coalblock to enable permanent flame above
-- Coalblock is non-flammable to avoid unwanted basic_flame nodes
minetest.override_item("default:coalblock", {
after_destruct = function(pos, oldnode)
pos.y = pos.y + 1
if minetest.get_node(pos).name == "fire:permanent_flame" then
minetest.remove_node(pos)
end
end,
on_ignite = function(pos, igniter)
local flame_pos = {x = pos.x, y = pos.y + 1, z = pos.z}
if minetest.get_node(flame_pos).name == "air" then
minetest.set_node(flame_pos, {name = "fire:permanent_flame"})
end
end,
})
--
-- Sound
--
local flame_sound = minetest.setting_getbool("flame_sound")
if flame_sound == nil then
-- Enable if no setting present
flame_sound = true
end
if flame_sound then
local handles = {}
local timer = 0
-- Parameters
local radius = 8 -- Flame node search radius around player
local cycle = 3 -- Cycle time for sound updates
-- Update sound for player
function fire.update_player_sound(player)
local player_name = player:get_player_name()
-- Search for flame nodes in radius around player
local ppos = player:getpos()
local areamin = vector.subtract(ppos, radius)
local areamax = vector.add(ppos, radius)
local fpos, num = minetest.find_nodes_in_area(
areamin,
areamax,
{"fire:basic_flame", "fire:permanent_flame"}
)
-- Total number of flames in radius
local flames = (num["fire:basic_flame"] or 0) +
(num["fire:permanent_flame"] or 0)
-- Stop previous sound
if handles[player_name] then
minetest.sound_stop(handles[player_name])
handles[player_name] = nil
end
-- If flames
if flames > 0 then
-- Find centre of flame positions
local fposmid = fpos[1]
-- If more than 1 flame
if #fpos > 1 then
local fposmin = areamax
local fposmax = areamin
for i = 1, #fpos do
local fposi = fpos[i]
if fposi.x > fposmax.x then
fposmax.x = fposi.x
end
if fposi.y > fposmax.y then
fposmax.y = fposi.y
end
if fposi.z > fposmax.z then
fposmax.z = fposi.z
end
if fposi.x < fposmin.x then
fposmin.x = fposi.x
end
if fposi.y < fposmin.y then
fposmin.y = fposi.y
end
if fposi.z < fposmin.z then
fposmin.z = fposi.z
end
end
fposmid = vector.divide(vector.add(fposmin, fposmax), 2)
end
-- Play sound
local handle = minetest.sound_play(
"fire_fire",
{
pos = fposmid,
to_player = player_name,
gain = math.min(0.06 * (1 + flames * 0.125), 0.18),
max_hear_distance = 32,
loop = true, -- In case of lag
}
)
-- Store sound handle for this player
if handle then
handles[player_name] = handle
end
end
end
-- Cycle for updating players sounds
minetest.register_globalstep(function(dtime)
timer = timer + dtime
if timer < cycle then
return
end
timer = 0
local players = minetest.get_connected_players()
for n = 1, #players do
fire.update_player_sound(players[n])
end
end)
-- Stop sound and clear handle on player leave
minetest.register_on_leaveplayer(function(player)
local player_name = player:get_player_name()
if handles[player_name] then
minetest.sound_stop(handles[player_name])
handles[player_name] = nil
end
end)
end
-- Deprecated function kept temporarily to avoid crashes if mod fire nodes call it
function fire.update_sounds_around(pos)
end
--
-- ABMs
--
-- Extinguish all flames quickly with water, snow, ice
minetest.register_abm({
label = "Extinguish flame",
nodenames = {"fire:basic_flame", "fire:permanent_flame"},
neighbors = {"group:puts_out_fire"},
interval = 3,
chance = 1,
catch_up = false,
action = function(pos, node, active_object_count, active_object_count_wider)
minetest.remove_node(pos)
minetest.sound_play("fire_extinguish_flame",
{pos = pos, max_hear_distance = 16, gain = 0.15})
end,
})
-- Enable the following ABMs according to 'enable fire' setting
local fire_enabled = minetest.setting_getbool("enable_fire")
if fire_enabled == nil then
-- New setting not specified, check for old setting.
-- If old setting is also not specified, 'not nil' is true.
fire_enabled = not minetest.setting_getbool("disable_fire")
end
if not fire_enabled then
-- Remove basic flames only if fire disabled
minetest.register_abm({
label = "Remove disabled fire",
nodenames = {"fire:basic_flame"},
interval = 7,
chance = 1,
catch_up = false,
action = minetest.remove_node,
})
else -- Fire enabled
-- Ignite neighboring nodes, add basic flames
minetest.register_abm({
label = "Ignite flame",
nodenames = {"group:flammable"},
neighbors = {"group:igniter"},
interval = 7,
chance = 12,
catch_up = false,
action = function(pos, node, active_object_count, active_object_count_wider)
-- If there is water or stuff like that around node, don't ignite
if minetest.find_node_near(pos, 1, {"group:puts_out_fire"}) then
return
end
local p = minetest.find_node_near(pos, 1, {"air"})
if p then
minetest.set_node(p, {name = "fire:basic_flame"})
end
end,
})
-- Remove flammable nodes around basic flame
minetest.register_abm({
label = "Remove flammable nodes",
nodenames = {"fire:basic_flame"},
neighbors = "group:flammable",
interval = 5,
chance = 18,
catch_up = false,
action = function(pos, node, active_object_count, active_object_count_wider)
local p = minetest.find_node_near(pos, 1, {"group:flammable"})
if p then
local flammable_node = minetest.get_node(p)
local def = minetest.registered_nodes[flammable_node.name]
if def.on_burn then
def.on_burn(p)
else
minetest.remove_node(p)
minetest.check_for_falling(p)
end
end
end,
})
end