mods/tnt/init.lua

   1 -- tnt/init.lua
   2
   3 tnt = {}
   4
   5 -- Load support for MT game translation.
   6 local S = minetest.get_translator("tnt")
   7
   8
   9 -- Default to enabled when in singleplayer
  10 local enable_tnt = minetest.settings:get_bool("enable_tnt")
  11 if enable_tnt == nil then
  12         enable_tnt = minetest.is_singleplayer()
  13 end
  14
  15 -- loss probabilities array (one in X will be lost)
  16 local loss_prob = {}
  17
  18 loss_prob["default:cobble"] = 3
  19 loss_prob["default:dirt"] = 4
  20
  21 local tnt_radius = tonumber(minetest.settings:get("tnt_radius") or 3)
  22
  23 -- Fill a list with data for content IDs, after all nodes are registered
  24 local cid_data = {}
  25 minetest.register_on_mods_loaded(function()
  26         for name, def in pairs(minetest.registered_nodes) do
  27                 cid_data[minetest.get_content_id(name)] = {
  28                         name = name,
  29                         drops = def.drops,
  30                         flammable = def.groups.flammable,
  31                         on_blast = def.on_blast,
  32                 }
  33         end
  34 end)
  35
  36 local function rand_pos(center, pos, radius)
  37         local def
  38         local reg_nodes = minetest.registered_nodes
  39         local i = 0
  40         repeat
  41                 -- Give up and use the center if this takes too long
  42                 if i > 4 then
  43                         pos.x, pos.z = center.x, center.z
  44                         break
  45                 end
  46                 pos.x = center.x + math.random(-radius, radius)
  47                 pos.z = center.z + math.random(-radius, radius)
  48                 def = reg_nodes[minetest.get_node(pos).name]
  49                 i = i + 1
  50         until def and not def.walkable
  51 end
  52
  53 local function eject_drops(drops, pos, radius)
  54         local drop_pos = vector.new(pos)
  55         for _, item in pairs(drops) do
  56                 local count = math.min(item:get_count(), item:get_stack_max())
  57                 while count > 0 do
  58                         local take = math.max(1,math.min(radius * radius,
  59                                         count,
  60                                         item:get_stack_max()))
  61                         rand_pos(pos, drop_pos, radius)
  62                         local dropitem = ItemStack(item)
  63                         dropitem:set_count(take)
  64                         local obj = minetest.add_item(drop_pos, dropitem)
  65                         if obj then
  66                                 obj:get_luaentity().collect = true
  67                                 obj:set_acceleration({x = 0, y = -10, z = 0})
  68                                 obj:set_velocity({x = math.random(-3, 3),
  69                                                 y = math.random(0, 10),
  70                                                 z = math.random(-3, 3)})
  71                         end
  72                         count = count - take
  73                 end
  74         end
  75 end
  76
  77 local function add_drop(drops, item)
  78         item = ItemStack(item)
  79         local name = item:get_name()
  80         if loss_prob[name] ~= nil and math.random(1, loss_prob[name]) == 1 then
  81                 return
  82         end
  83
  84         local drop = drops[name]
  85         if drop == nil then
  86                 drops[name] = item
  87         else
  88                 drop:set_count(drop:get_count() + item:get_count())
  89         end
  90 end
  91
  92 local basic_flame_on_construct -- cached value
  93 local function destroy(drops, npos, cid, c_air, c_fire,
  94                 on_blast_queue, on_construct_queue,
  95                 ignore_protection, ignore_on_blast, owner)
  96         if not ignore_protection and minetest.is_protected(npos, owner) then
  97                 return cid
  98         end
  99
 100         local def = cid_data[cid]
 101
 102         if not def then
 103                 return c_air
 104         elseif not ignore_on_blast and def.on_blast then
 105                 on_blast_queue[#on_blast_queue + 1] = {
 106                         pos = vector.new(npos),
 107                         on_blast = def.on_blast
 108                 }
 109                 return cid
 110         elseif def.flammable then
 111                 on_construct_queue[#on_construct_queue + 1] = {
 112                         fn = basic_flame_on_construct,
 113                         pos = vector.new(npos)
 114                 }
 115                 return c_fire
 116         else
 117                 local node_drops = minetest.get_node_drops(def.name, "")
 118                 for _, item in pairs(node_drops) do
 119                         add_drop(drops, item)
 120                 end
 121                 return c_air
 122         end
 123 end
 124
 125 local function calc_velocity(pos1, pos2, old_vel, power)
 126         -- Avoid errors caused by a vector of zero length
 127         if vector.equals(pos1, pos2) then
 128                 return old_vel
 129         end
 130
 131         local vel = vector.direction(pos1, pos2)
 132         vel = vector.normalize(vel)
 133         vel = vector.multiply(vel, power)
 134
 135         -- Divide by distance
 136         local dist = vector.distance(pos1, pos2)
 137         dist = math.max(dist, 1)
 138         vel = vector.divide(vel, dist)
 139
 140         -- Add old velocity
 141         vel = vector.add(vel, old_vel)
 142
 143         -- randomize it a bit
 144         vel = vector.add(vel, {
 145                 x = math.random() - 0.5,
 146                 y = math.random() - 0.5,
 147                 z = math.random() - 0.5,
 148         })
 149
 150         -- Limit to terminal velocity
 151         dist = vector.length(vel)
 152         if dist > 250 then
 153                 vel = vector.divide(vel, dist / 250)
 154         end
 155         return vel
 156 end
 157
 158 local function entity_physics(pos, radius, drops)
 159         local objs = minetest.get_objects_inside_radius(pos, radius)
 160         for _, obj in pairs(objs) do
 161                 local obj_pos = obj:get_pos()
 162                 local dist = math.max(1, vector.distance(pos, obj_pos))
 163
 164                 local damage = (4 / dist) * radius
 165                 if obj:is_player() then
 166                         local dir = vector.normalize(vector.subtract(obj_pos, pos))
 167                         local moveoff = vector.multiply(dir, 2 / dist * radius)
 168                         obj:add_player_velocity(moveoff)
 169
 170                         obj:set_hp(obj:get_hp() - damage)
 171                 else
 172                         local luaobj = obj:get_luaentity()
 173
 174                         -- object might have disappeared somehow
 175                         if luaobj then
 176                                 local do_damage = true
 177                                 local do_knockback = true
 178                                 local entity_drops = {}
 179                                 local objdef = minetest.registered_entities[luaobj.name]
 180
 181                                 if objdef and objdef.on_blast then
 182                                         do_damage, do_knockback, entity_drops = objdef.on_blast(luaobj, damage)
 183                                 end
 184
 185                                 if do_knockback then
 186                                         local obj_vel = obj:get_velocity()
 187                                         obj:set_velocity(calc_velocity(pos, obj_pos,
 188                                                         obj_vel, radius * 10))
 189                                 end
 190                                 if do_damage then
 191                                         if not obj:get_armor_groups().immortal then
 192                                                 obj:punch(obj, 1.0, {
 193                                                         full_punch_interval = 1.0,
 194                                                         damage_groups = {fleshy = damage},
 195                                                 }, nil)
 196                                         end
 197                                 end
 198                                 for _, item in pairs(entity_drops) do
 199                                         add_drop(drops, item)
 200                                 end
 201                         end
 202                 end
 203         end
 204 end
 205
 206 local function add_effects(pos, radius, drops)
 207         minetest.add_particle({
 208                 pos = pos,
 209                 velocity = vector.new(),
 210                 acceleration = vector.new(),
 211                 expirationtime = 0.4,
 212                 size = radius * 10,
 213                 collisiondetection = false,
 214                 vertical = false,
 215                 texture = "tnt_boom.png",
 216                 glow = 15,
 217         })
 218         minetest.add_particlespawner({
 219                 amount = 64,
 220                 time = 0.5,
 221                 minpos = vector.subtract(pos, radius / 2),
 222                 maxpos = vector.add(pos, radius / 2),
 223                 minvel = {x = -10, y = -10, z = -10},
 224                 maxvel = {x = 10, y = 10, z = 10},
 225                 minacc = vector.new(),
 226                 maxacc = vector.new(),
 227                 minexptime = 1,
 228                 maxexptime = 2.5,
 229                 minsize = radius * 3,
 230                 maxsize = radius * 5,
 231                 texture = "tnt_smoke.png",
 232         })
 233
 234         -- we just dropped some items. Look at the items entities and pick
 235         -- one of them to use as texture
 236         local texture = "tnt_blast.png" --fallback texture
 237         local most = 0
 238         for name, stack in pairs(drops) do
 239                 local count = stack:get_count()
 240                 if count > most then
 241                         most = count
 242                         local def = minetest.registered_nodes[name]
 243                         if def and def.tiles and def.tiles[1] then
 244                                 texture = def.tiles[1]
 245                         end
 246                 end
 247         end
 248
 249         minetest.add_particlespawner({
 250                 amount = 64,
 251                 time = 0.1,
 252                 minpos = vector.subtract(pos, radius / 2),
 253                 maxpos = vector.add(pos, radius / 2),
 254                 minvel = {x = -3, y = 0, z = -3},
 255                 maxvel = {x = 3, y = 5,  z = 3},
 256                 minacc = {x = 0, y = -10, z = 0},
 257                 maxacc = {x = 0, y = -10, z = 0},
 258                 minexptime = 0.8,
 259                 maxexptime = 2.0,
 260                 minsize = radius * 0.66,
 261                 maxsize = radius * 2,
 262                 texture = texture,
 263                 collisiondetection = true,
 264         })
 265 end
 266
 267 function tnt.burn(pos, nodename)
 268         local name = nodename or minetest.get_node(pos).name
 269         local def = minetest.registered_nodes[name]
 270         if not def then
 271                 return
 272         elseif def.on_ignite then
 273                 def.on_ignite(pos)
 274         elseif minetest.get_item_group(name, "tnt") > 0 then
 275                 minetest.swap_node(pos, {name = name .. "_burning"})
 276                 minetest.sound_play("tnt_ignite", {pos = pos}, true)
 277                 minetest.get_node_timer(pos):start(1)
 278         end
 279 end
 280
 281 local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast, owner, explode_center)
 282         pos = vector.round(pos)
 283         -- scan for adjacent TNT nodes first, and enlarge the explosion
 284         local vm1 = VoxelManip()
 285         local p1 = vector.subtract(pos, 2)
 286         local p2 = vector.add(pos, 2)
 287         local minp, maxp = vm1:read_from_map(p1, p2)
 288         local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
 289         local data = vm1:get_data()
 290         local count = 0
 291         local c_tnt
 292         local c_tnt_burning = minetest.get_content_id("tnt:tnt_burning")
 293         local c_tnt_boom = minetest.get_content_id("tnt:boom")
 294         local c_air = minetest.get_content_id("air")
 295         if enable_tnt then
 296                 c_tnt = minetest.get_content_id("tnt:tnt")
 297         else
 298                 c_tnt = c_tnt_burning -- tnt is not registered if disabled
 299         end
 300         -- make sure we still have explosion even when centre node isnt tnt related
 301         if explode_center then
 302                 count = 1
 303         end
 304
 305         for z = pos.z - 2, pos.z + 2 do
 306         for y = pos.y - 2, pos.y + 2 do
 307                 local vi = a:index(pos.x - 2, y, z)
 308                 for x = pos.x - 2, pos.x + 2 do
 309                         local cid = data[vi]
 310                         if cid == c_tnt or cid == c_tnt_boom or cid == c_tnt_burning then
 311                                 count = count + 1
 312                                 data[vi] = c_air
 313                         end
 314                         vi = vi + 1
 315                 end
 316         end
 317         end
 318
 319         vm1:set_data(data)
 320         vm1:write_to_map()
 321
 322         -- recalculate new radius
 323         radius = math.floor(radius * math.pow(count, 1/3))
 324
 325         -- perform the explosion
 326         local vm = VoxelManip()
 327         local pr = PseudoRandom(os.time())
 328         p1 = vector.subtract(pos, radius)
 329         p2 = vector.add(pos, radius)
 330         minp, maxp = vm:read_from_map(p1, p2)
 331         a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
 332         data = vm:get_data()
 333
 334         local drops = {}
 335         local on_blast_queue = {}
 336         local on_construct_queue = {}
 337         basic_flame_on_construct = minetest.registered_nodes["fire:basic_flame"].on_construct
 338
 339         local c_fire = minetest.get_content_id("fire:basic_flame")
 340         for z = -radius, radius do
 341         for y = -radius, radius do
 342         local vi = a:index(pos.x + (-radius), pos.y + y, pos.z + z)
 343         for x = -radius, radius do
 344                 local r = vector.length(vector.new(x, y, z))
 345                 if (radius * radius) / (r * r) >= (pr:next(80, 125) / 100) then
 346                         local cid = data[vi]
 347                         local p = {x = pos.x + x, y = pos.y + y, z = pos.z + z}
 348                         if cid ~= c_air then
 349                                 data[vi] = destroy(drops, p, cid, c_air, c_fire,
 350                                         on_blast_queue, on_construct_queue,
 351                                         ignore_protection, ignore_on_blast, owner)
 352                         end
 353                 end
 354                 vi = vi + 1
 355         end
 356         end
 357         end
 358
 359         vm:set_data(data)
 360         vm:write_to_map()
 361         vm:update_map()
 362         vm:update_liquids()
 363
 364         -- call check_single_for_falling for everything within 1.5x blast radius
 365         for y = -radius * 1.5, radius * 1.5 do
 366         for z = -radius * 1.5, radius * 1.5 do
 367         for x = -radius * 1.5, radius * 1.5 do
 368                 local rad = {x = x, y = y, z = z}
 369                 local s = vector.add(pos, rad)
 370                 local r = vector.length(rad)
 371                 if r / radius < 1.4 then
 372                         minetest.check_single_for_falling(s)
 373                 end
 374         end
 375         end
 376         end
 377
 378         for _, queued_data in pairs(on_blast_queue) do
 379                 local dist = math.max(1, vector.distance(queued_data.pos, pos))
 380                 local intensity = (radius * radius) / (dist * dist)
 381                 local node_drops = queued_data.on_blast(queued_data.pos, intensity)
 382                 if node_drops then
 383                         for _, item in pairs(node_drops) do
 384                                 add_drop(drops, item)
 385                         end
 386                 end
 387         end
 388
 389         for _, queued_data in pairs(on_construct_queue) do
 390                 queued_data.fn(queued_data.pos)
 391         end
 392
 393         minetest.log("action", "TNT owned by " .. owner .. " detonated at " ..
 394                 minetest.pos_to_string(pos) .. " with radius " .. radius)
 395
 396         return drops, radius
 397 end
 398
 399 function tnt.boom(pos, def)
 400         def = def or {}
 401         def.radius = def.radius or 1
 402         def.damage_radius = def.damage_radius or def.radius * 2
 403         local meta = minetest.get_meta(pos)
 404         local owner = meta:get_string("owner")
 405         if not def.explode_center then
 406                 minetest.set_node(pos, {name = "tnt:boom"})
 407         end
 408         local sound = def.sound or "tnt_explode"
 409         minetest.sound_play(sound, {pos = pos, gain = 2.5,
 410                         max_hear_distance = math.min(def.radius * 20, 128)}, true)
 411         local drops, radius = tnt_explode(pos, def.radius, def.ignore_protection,
 412                         def.ignore_on_blast, owner, def.explode_center)
 413         -- append entity drops
 414         local damage_radius = (radius / math.max(1, def.radius)) * def.damage_radius
 415         entity_physics(pos, damage_radius, drops)
 416         if not def.disable_drops then
 417                 eject_drops(drops, pos, radius)
 418         end
 419         add_effects(pos, radius, drops)
 420         minetest.log("action", "A TNT explosion occurred at " .. minetest.pos_to_string(pos) ..
 421                 " with radius " .. radius)
 422 end
 423
 424 minetest.register_node("tnt:boom", {
 425         drawtype = "airlike",
 426         light_source = default.LIGHT_MAX,
 427         walkable = false,
 428         drop = "",
 429         groups = {dig_immediate = 3},
 430         -- unaffected by explosions
 431         on_blast = function() end,
 432 })
 433
 434 minetest.register_node("tnt:gunpowder", {
 435         description = S("Gun Powder"),
 436         drawtype = "raillike",
 437         paramtype = "light",
 438         is_ground_content = false,
 439         sunlight_propagates = true,
 440         walkable = false,
 441         tiles = {
 442                 "tnt_gunpowder_straight.png",
 443                 "tnt_gunpowder_curved.png",
 444                 "tnt_gunpowder_t_junction.png",
 445                 "tnt_gunpowder_crossing.png"
 446         },
 447         inventory_image = "tnt_gunpowder_inventory.png",
 448         wield_image = "tnt_gunpowder_inventory.png",
 449         selection_box = {
 450                 type = "fixed",
 451                 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 452         },
 453         groups = {dig_immediate = 2, attached_node = 1, flammable = 5,
 454                 connect_to_raillike = minetest.raillike_group("gunpowder")},
 455         sounds = default.node_sound_leaves_defaults(),
 456
 457         on_punch = function(pos, node, puncher)
 458                 if puncher:get_wielded_item():get_name() == "default:torch" then
 459                         minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
 460                         minetest.log("action", puncher:get_player_name() ..
 461                                 " ignites tnt:gunpowder at " ..
 462                                 minetest.pos_to_string(pos))
 463                 end
 464         end,
 465         on_blast = function(pos, intensity)
 466                 minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
 467         end,
 468         on_burn = function(pos)
 469                 minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
 470         end,
 471         on_ignite = function(pos, igniter)
 472                 minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
 473         end,
 474 })
 475
 476 minetest.register_node("tnt:gunpowder_burning", {
 477         drawtype = "raillike",
 478         paramtype = "light",
 479         sunlight_propagates = true,
 480         walkable = false,
 481         light_source = 5,
 482         tiles = {{
 483                 name = "tnt_gunpowder_burning_straight_animated.png",
 484                 animation = {
 485                         type = "vertical_frames",
 486                         aspect_w = 16,
 487                         aspect_h = 16,
 488                         length = 1,
 489                 }
 490         },
 491         {
 492                 name = "tnt_gunpowder_burning_curved_animated.png",
 493                 animation = {
 494                         type = "vertical_frames",
 495                         aspect_w = 16,
 496                         aspect_h = 16,
 497                         length = 1,
 498                 }
 499         },
 500         {
 501                 name = "tnt_gunpowder_burning_t_junction_animated.png",
 502                 animation = {
 503                         type = "vertical_frames",
 504                         aspect_w = 16,
 505                         aspect_h = 16,
 506                         length = 1,
 507                 }
 508         },
 509         {
 510                 name = "tnt_gunpowder_burning_crossing_animated.png",
 511                 animation = {
 512                         type = "vertical_frames",
 513                         aspect_w = 16,
 514                         aspect_h = 16,
 515                         length = 1,
 516                 }
 517         }},
 518         selection_box = {
 519                 type = "fixed",
 520                 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 521         },
 522         drop = "",
 523         groups = {
 524                 dig_immediate = 2,
 525                 attached_node = 1,
 526                 connect_to_raillike = minetest.raillike_group("gunpowder")
 527         },
 528         sounds = default.node_sound_leaves_defaults(),
 529         on_timer = function(pos, elapsed)
 530                 for dx = -1, 1 do
 531                 for dz = -1, 1 do
 532                         if math.abs(dx) + math.abs(dz) == 1 then
 533                                 for dy = -1, 1 do
 534                                         tnt.burn({
 535                                                 x = pos.x + dx,
 536                                                 y = pos.y + dy,
 537                                                 z = pos.z + dz,
 538                                         })
 539                                 end
 540                         end
 541                 end
 542                 end
 543                 minetest.remove_node(pos)
 544         end,
 545         -- unaffected by explosions
 546         on_blast = function() end,
 547         on_construct = function(pos)
 548                 minetest.sound_play("tnt_gunpowder_burning", {pos = pos,
 549                         gain = 2}, true)
 550                 minetest.get_node_timer(pos):start(1)
 551         end,
 552 })
 553
 554 minetest.register_craft({
 555         output = "tnt:gunpowder 5",
 556         type = "shapeless",
 557         recipe = {"default:coal_lump", "default:gravel"}
 558 })
 559
 560 minetest.register_craftitem("tnt:tnt_stick", {
 561         description = S("TNT Stick"),
 562         inventory_image = "tnt_tnt_stick.png",
 563         groups = {flammable = 5},
 564 })
 565
 566 if enable_tnt then
 567         minetest.register_craft({
 568                 output = "tnt:tnt_stick 2",
 569                 recipe = {
 570                         {"tnt:gunpowder", "", "tnt:gunpowder"},
 571                         {"tnt:gunpowder", "default:paper", "tnt:gunpowder"},
 572                         {"tnt:gunpowder", "", "tnt:gunpowder"},
 573                 }
 574         })
 575
 576         minetest.register_craft({
 577                 output = "tnt:tnt",
 578                 recipe = {
 579                         {"tnt:tnt_stick", "tnt:tnt_stick", "tnt:tnt_stick"},
 580                         {"tnt:tnt_stick", "tnt:tnt_stick", "tnt:tnt_stick"},
 581                         {"tnt:tnt_stick", "tnt:tnt_stick", "tnt:tnt_stick"}
 582                 }
 583         })
 584
 585         minetest.register_abm({
 586                 label = "TNT ignition",
 587                 nodenames = {"group:tnt", "tnt:gunpowder"},
 588                 neighbors = {"fire:basic_flame", "default:lava_source", "default:lava_flowing"},
 589                 interval = 4,
 590                 chance = 1,
 591                 action = function(pos, node)
 592                         tnt.burn(pos, node.name)
 593                 end,
 594         })
 595 end
 596
 597 function tnt.register_tnt(def)
 598         local name
 599         if not def.name:find(':') then
 600                 name = "tnt:" .. def.name
 601         else
 602                 name = def.name
 603                 def.name = def.name:match(":([%w_]+)")
 604         end
 605         if not def.tiles then def.tiles = {} end
 606         local tnt_top = def.tiles.top or def.name .. "_top.png"
 607         local tnt_bottom = def.tiles.bottom or def.name .. "_bottom.png"
 608         local tnt_side = def.tiles.side or def.name .. "_side.png"
 609         local tnt_burning = def.tiles.burning or def.name .. "_top_burning_animated.png"
 610         if not def.damage_radius then def.damage_radius = def.radius * 2 end
 611
 612         if enable_tnt then
 613                 minetest.register_node(":" .. name, {
 614                         description = def.description,
 615                         tiles = {tnt_top, tnt_bottom, tnt_side},
 616                         is_ground_content = false,
 617                         groups = {dig_immediate = 2, mesecon = 2, tnt = 1, flammable = 5},
 618                         sounds = default.node_sound_wood_defaults(),
 619                         after_place_node = function(pos, placer)
 620                                 if placer:is_player() then
 621                                         local meta = minetest.get_meta(pos)
 622                                         meta:set_string("owner", placer:get_player_name())
 623                                 end
 624                         end,
 625                         on_punch = function(pos, node, puncher)
 626                                 if puncher:get_wielded_item():get_name() == "default:torch" then
 627                                         minetest.swap_node(pos, {name = name .. "_burning"})
 628                                         minetest.registered_nodes[name .. "_burning"].on_construct(pos)
 629                                         minetest.log("action", puncher:get_player_name() ..
 630                                                 " ignites " .. node.name .. " at " ..
 631                                                 minetest.pos_to_string(pos))
 632                                 end
 633                         end,
 634                         on_blast = function(pos, intensity)
 635                                 minetest.after(0.1, function()
 636                                         tnt.boom(pos, def)
 637                                 end)
 638                         end,
 639                         mesecons = {effector =
 640                                 {action_on =
 641                                         function(pos)
 642                                                 tnt.boom(pos, def)
 643                                         end
 644                                 }
 645                         },
 646                         on_burn = function(pos)
 647                                 minetest.swap_node(pos, {name = name .. "_burning"})
 648                                 minetest.registered_nodes[name .. "_burning"].on_construct(pos)
 649                         end,
 650                         on_ignite = function(pos, igniter)
 651                                 minetest.swap_node(pos, {name = name .. "_burning"})
 652                                 minetest.registered_nodes[name .. "_burning"].on_construct(pos)
 653                         end,
 654                 })
 655         end
 656
 657         minetest.register_node(":" .. name .. "_burning", {
 658                 tiles = {
 659                         {
 660                                 name = tnt_burning,
 661                                 animation = {
 662                                         type = "vertical_frames",
 663                                         aspect_w = 16,
 664                                         aspect_h = 16,
 665                                         length = 1,
 666                                 }
 667                         },
 668                         tnt_bottom, tnt_side
 669                         },
 670                 light_source = 5,
 671                 drop = "",
 672                 sounds = default.node_sound_wood_defaults(),
 673                 groups = {falling_node = 1},
 674                 on_timer = function(pos, elapsed)
 675                         tnt.boom(pos, def)
 676                 end,
 677                 -- unaffected by explosions
 678                 on_blast = function() end,
 679                 on_construct = function(pos)
 680                         minetest.sound_play("tnt_ignite", {pos = pos}, true)
 681                         minetest.get_node_timer(pos):start(4)
 682                         minetest.check_for_falling(pos)
 683                 end,
 684         })
 685 end
 686
 687 tnt.register_tnt({
 688         name = "tnt:tnt",
 689         description = S("TNT"),
 690         radius = tnt_radius,
 691 })