tnt = {}
--- Default to enabled in singleplayer and disabled in multiplayer
-local singleplayer = minetest.is_singleplayer()
-local setting = minetest.setting_getbool("enable_tnt")
-if (not singleplayer and setting ~= true) or
- (singleplayer and setting == false) then
- return
+
+-- Default to enabled when in singleplayer
+local enable_tnt = minetest.settings:get_bool("enable_tnt")
+if enable_tnt == nil then
+ enable_tnt = minetest.is_singleplayer()
end
-- loss probabilities array (one in X will be lost)
loss_prob["default:cobble"] = 3
loss_prob["default:dirt"] = 4
-local radius = tonumber(minetest.setting_get("tnt_radius") or 3)
+local tnt_radius = tonumber(minetest.settings:get("tnt_radius") or 3)
-- Fill a list with data for content IDs, after all nodes are registered
local cid_data = {}
local function eject_drops(drops, pos, radius)
local drop_pos = vector.new(pos)
for _, item in pairs(drops) do
- local count = item:get_count()
- local take_est = math.log(count * count) + math.random(0,4) - 2
+ local count = math.min(item:get_count(), item:get_stack_max())
while count > 0 do
- local take = math.max(1,math.min(take_est,
- item:get_count(),
+ local take = math.max(1,math.min(radius * radius,
+ count,
item:get_stack_max()))
rand_pos(pos, drop_pos, radius)
- local obj = minetest.add_item(drop_pos, item:get_name() .. " " .. take)
+ local dropitem = ItemStack(item)
+ dropitem:set_count(take)
+ local obj = minetest.add_item(drop_pos, dropitem)
if obj then
obj:get_luaentity().collect = true
obj:setacceleration({x = 0, y = -10, z = 0})
end
end
-
-local function destroy(drops, npos, cid, c_air, c_fire, on_blast_queue, ignore_protection, ignore_on_blast)
- if not ignore_protection and minetest.is_protected(npos, "") then
+local basic_flame_on_construct -- cached value
+local function destroy(drops, npos, cid, c_air, c_fire,
+ on_blast_queue, on_construct_queue,
+ ignore_protection, ignore_on_blast, owner)
+ if not ignore_protection and minetest.is_protected(npos, owner) then
return cid
end
-
+
local def = cid_data[cid]
if not def then
return c_air
elseif not ignore_on_blast and def.on_blast then
- on_blast_queue[#on_blast_queue + 1] = {pos = vector.new(npos), on_blast = def.on_blast}
+ on_blast_queue[#on_blast_queue + 1] = {
+ pos = vector.new(npos),
+ on_blast = def.on_blast
+ }
return cid
elseif def.flammable then
+ on_construct_queue[#on_construct_queue + 1] = {
+ fn = basic_flame_on_construct,
+ pos = vector.new(npos)
+ }
return c_fire
else
local node_drops = minetest.get_node_drops(def.name, "")
- for _, item in ipairs(node_drops) do
+ for _, item in pairs(node_drops) do
add_drop(drops, item)
end
return c_air
end
end
-
local function calc_velocity(pos1, pos2, old_vel, power)
+ -- Avoid errors caused by a vector of zero length
+ if vector.equals(pos1, pos2) then
+ return old_vel
+ end
+
local vel = vector.direction(pos1, pos2)
vel = vector.normalize(vel)
vel = vector.multiply(vel, power)
-- Add old velocity
vel = vector.add(vel, old_vel)
+ -- randomize it a bit
+ vel = vector.add(vel, {
+ x = math.random() - 0.5,
+ y = math.random() - 0.5,
+ z = math.random() - 0.5,
+ })
+
-- Limit to terminal velocity
dist = vector.length(vel)
if dist > 250 then
return vel
end
-local function entity_physics(pos, radius)
+local function entity_physics(pos, radius, drops)
local objs = minetest.get_objects_inside_radius(pos, radius)
for _, obj in pairs(objs) do
local obj_pos = obj:getpos()
- local obj_vel = obj:getvelocity()
local dist = math.max(1, vector.distance(pos, obj_pos))
- if obj_vel ~= nil then
- obj:setvelocity(calc_velocity(pos, obj_pos,
- obj_vel, radius * 10))
- end
-
local damage = (4 / dist) * radius
- obj:set_hp(obj:get_hp() - damage)
+ if obj:is_player() then
+ -- currently the engine has no method to set
+ -- player velocity. See #2960
+ -- instead, we knock the player back 1.0 node, and slightly upwards
+ local dir = vector.normalize(vector.subtract(obj_pos, pos))
+ local moveoff = vector.multiply(dir, dist + 1.0)
+ local newpos = vector.add(pos, moveoff)
+ newpos = vector.add(newpos, {x = 0, y = 0.2, z = 0})
+ obj:setpos(newpos)
+
+ obj:set_hp(obj:get_hp() - damage)
+ else
+ local do_damage = true
+ local do_knockback = true
+ local entity_drops = {}
+ local luaobj = obj:get_luaentity()
+ local objdef = minetest.registered_entities[luaobj.name]
+
+ if objdef and objdef.on_blast then
+ do_damage, do_knockback, entity_drops = objdef.on_blast(luaobj, damage)
+ end
+
+ if do_knockback then
+ local obj_vel = obj:getvelocity()
+ obj:setvelocity(calc_velocity(pos, obj_pos,
+ obj_vel, radius * 10))
+ end
+ if do_damage then
+ if not obj:get_armor_groups().immortal then
+ obj:punch(obj, 1.0, {
+ full_punch_interval = 1.0,
+ damage_groups = {fleshy = damage},
+ }, nil)
+ end
+ end
+ for _, item in pairs(entity_drops) do
+ add_drop(drops, item)
+ end
+ end
end
end
local function add_effects(pos, radius, drops)
+ minetest.add_particle({
+ pos = pos,
+ velocity = vector.new(),
+ acceleration = vector.new(),
+ expirationtime = 0.4,
+ size = radius * 10,
+ collisiondetection = false,
+ vertical = false,
+ texture = "tnt_boom.png",
+ glow = 15,
+ })
minetest.add_particlespawner({
- amount = 128,
- time = 1,
+ amount = 64,
+ time = 0.5,
minpos = vector.subtract(pos, radius / 2),
maxpos = vector.add(pos, radius / 2),
- minvel = {x = -20, y = -20, z = -20},
- maxvel = {x = 20, y = 20, z = 20},
+ minvel = {x = -10, y = -10, z = -10},
+ maxvel = {x = 10, y = 10, z = 10},
minacc = vector.new(),
maxacc = vector.new(),
minexptime = 1,
- maxexptime = 3,
- minsize = 8,
- maxsize = 16,
+ maxexptime = 2.5,
+ minsize = radius * 3,
+ maxsize = radius * 5,
texture = "tnt_smoke.png",
})
maxacc = {x = 0, y = -10, z = 0},
minexptime = 0.8,
maxexptime = 2.0,
- minsize = 2,
- maxsize = 6,
+ minsize = radius * 0.66,
+ maxsize = radius * 2,
texture = texture,
collisiondetection = true,
})
end
-function tnt.burn(pos)
- local name = minetest.get_node(pos).name
- local group = minetest.get_item_group(name, "tnt")
- if group > 0 then
+function tnt.burn(pos, nodename)
+ local name = nodename or minetest.get_node(pos).name
+ local def = minetest.registered_nodes[name]
+ if not def then
+ return
+ elseif def.on_ignite then
+ def.on_ignite(pos)
+ elseif minetest.get_item_group(name, "tnt") > 0 then
+ minetest.swap_node(pos, {name = name .. "_burning"})
minetest.sound_play("tnt_ignite", {pos = pos})
- minetest.set_node(pos, {name = name .. "_burning"})
minetest.get_node_timer(pos):start(1)
- elseif name == "tnt:gunpowder" then
- minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
end
end
-local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast)
- local pos = vector.round(pos)
+local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast, owner, explode_center)
+ pos = vector.round(pos)
+ -- scan for adjacent TNT nodes first, and enlarge the explosion
+ local vm1 = VoxelManip()
+ local p1 = vector.subtract(pos, 2)
+ local p2 = vector.add(pos, 2)
+ local minp, maxp = vm1:read_from_map(p1, p2)
+ local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
+ local data = vm1:get_data()
+ local count = 0
+ local c_tnt = minetest.get_content_id("tnt:tnt")
+ local c_tnt_burning = minetest.get_content_id("tnt:tnt_burning")
+ local c_tnt_boom = minetest.get_content_id("tnt:boom")
+ local c_air = minetest.get_content_id("air")
+ -- make sure we still have explosion even when centre node isnt tnt related
+ if explode_center then
+ count = 1
+ end
+
+ for z = pos.z - 2, pos.z + 2 do
+ for y = pos.y - 2, pos.y + 2 do
+ local vi = a:index(pos.x - 2, y, z)
+ for x = pos.x - 2, pos.x + 2 do
+ local cid = data[vi]
+ if cid == c_tnt or cid == c_tnt_boom or cid == c_tnt_burning then
+ count = count + 1
+ data[vi] = c_air
+ end
+ vi = vi + 1
+ end
+ end
+ end
+
+ vm1:set_data(data)
+ vm1:write_to_map()
+
+ -- recalculate new radius
+ radius = math.floor(radius * math.pow(count, 1/3))
+
+ -- perform the explosion
local vm = VoxelManip()
local pr = PseudoRandom(os.time())
- local p1 = vector.subtract(pos, radius)
- local p2 = vector.add(pos, radius)
- local minp, maxp = vm:read_from_map(p1, p2)
- local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
- local data = vm:get_data()
+ p1 = vector.subtract(pos, radius)
+ p2 = vector.add(pos, radius)
+ minp, maxp = vm:read_from_map(p1, p2)
+ a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
+ data = vm:get_data()
local drops = {}
local on_blast_queue = {}
+ local on_construct_queue = {}
+ basic_flame_on_construct = minetest.registered_nodes["fire:basic_flame"].on_construct
- local c_air = minetest.get_content_id("air")
local c_fire = minetest.get_content_id("fire:basic_flame")
for z = -radius, radius do
for y = -radius, radius do
local p = {x = pos.x + x, y = pos.y + y, z = pos.z + z}
if cid ~= c_air then
data[vi] = destroy(drops, p, cid, c_air, c_fire,
- on_blast_queue, ignore_protection,
- ignore_on_blast)
+ on_blast_queue, on_construct_queue,
+ ignore_protection, ignore_on_blast, owner)
end
end
vi = vi + 1
vm:update_map()
vm:update_liquids()
- -- call nodeupdate for everything within 1.5x blast radius
+ -- call check_single_for_falling for everything within 1.5x blast radius
+ for y = -radius * 1.5, radius * 1.5 do
for z = -radius * 1.5, radius * 1.5 do
for x = -radius * 1.5, radius * 1.5 do
- for y = -radius * 1.5, radius * 1.5 do
- local s = vector.add(pos, {x = x, y = y, z = z})
- local r = vector.distance(pos, s)
+ local rad = {x = x, y = y, z = z}
+ local s = vector.add(pos, rad)
+ local r = vector.length(rad)
if r / radius < 1.4 then
- nodeupdate(s)
+ minetest.check_single_for_falling(s)
end
end
end
end
- for _, data in ipairs(on_blast_queue) do
- local dist = math.max(1, vector.distance(data.pos, pos))
+ for _, queued_data in pairs(on_blast_queue) do
+ local dist = math.max(1, vector.distance(queued_data.pos, pos))
local intensity = (radius * radius) / (dist * dist)
- local node_drops = data.on_blast(data.pos, intensity)
+ local node_drops = queued_data.on_blast(queued_data.pos, intensity)
if node_drops then
- for _, item in ipairs(node_drops) do
+ for _, item in pairs(node_drops) do
add_drop(drops, item)
end
end
end
- return drops
+ for _, queued_data in pairs(on_construct_queue) do
+ queued_data.fn(queued_data.pos)
+ end
+
+ minetest.log("action", "TNT owned by " .. owner .. " detonated at " ..
+ minetest.pos_to_string(pos) .. " with radius " .. radius)
+
+ return drops, radius
end
function tnt.boom(pos, def)
- minetest.sound_play("tnt_explode", {pos = pos, gain = 1.5, max_hear_distance = 2*64})
- minetest.set_node(pos, {name = "tnt:boom"})
- minetest.get_node_timer(pos):start(0.5)
- local drops = tnt_explode(pos, def.radius, def.ignore_protection,
- def.ignore_on_blast)
- entity_physics(pos, def.damage_radius)
+ local meta = minetest.get_meta(pos)
+ local owner = meta:get_string("owner")
+ if not def.explode_center then
+ minetest.set_node(pos, {name = "tnt:boom"})
+ end
+ local sound = def.sound or "tnt_explode"
+ minetest.sound_play(sound, {pos = pos, gain = 1.5,
+ max_hear_distance = math.min(def.radius * 20, 128)})
+ local drops, radius = tnt_explode(pos, def.radius, def.ignore_protection,
+ def.ignore_on_blast, owner, def.explode_center)
+ -- append entity drops
+ local damage_radius = (radius / def.radius) * def.damage_radius
+ entity_physics(pos, damage_radius, drops)
if not def.disable_drops then
- eject_drops(drops, pos, def.radius)
+ eject_drops(drops, pos, radius)
end
- add_effects(pos, def.radius, drops)
+ add_effects(pos, radius, drops)
+ minetest.log("action", "A TNT explosion occurred at " .. minetest.pos_to_string(pos) ..
+ " with radius " .. radius)
end
minetest.register_node("tnt:boom", {
- drawtype = "plantlike",
- tiles = {"tnt_boom.png"},
+ drawtype = "airlike",
light_source = default.LIGHT_MAX,
walkable = false,
drop = "",
groups = {dig_immediate = 3},
- on_timer = function(pos, elapsed)
- minetest.remove_node(pos)
- end,
-- unaffected by explosions
on_blast = function() end,
})
is_ground_content = false,
sunlight_propagates = true,
walkable = false,
- tiles = {"tnt_gunpowder_straight.png", "tnt_gunpowder_curved.png", "tnt_gunpowder_t_junction.png", "tnt_gunpowder_crossing.png"},
+ tiles = {
+ "tnt_gunpowder_straight.png",
+ "tnt_gunpowder_curved.png",
+ "tnt_gunpowder_t_junction.png",
+ "tnt_gunpowder_crossing.png"
+ },
inventory_image = "tnt_gunpowder_inventory.png",
wield_image = "tnt_gunpowder_inventory.png",
selection_box = {
type = "fixed",
fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
},
- groups = {dig_immediate = 2, attached_node = 1, connect_to_raillike = minetest.raillike_group("gunpowder")},
+ groups = {dig_immediate = 2, attached_node = 1, flammable = 5,
+ connect_to_raillike = minetest.raillike_group("gunpowder")},
sounds = default.node_sound_leaves_defaults(),
-
+
on_punch = function(pos, node, puncher)
if puncher:get_wielded_item():get_name() == "default:torch" then
- tnt.burn(pos)
+ minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
+ minetest.log("action", puncher:get_player_name() ..
+ " ignites tnt:gunpowder at " ..
+ minetest.pos_to_string(pos))
end
end,
on_blast = function(pos, intensity)
- tnt.burn(pos)
+ minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
+ end,
+ on_burn = function(pos)
+ minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
+ end,
+ on_ignite = function(pos, igniter)
+ minetest.set_node(pos, {name = "tnt:gunpowder_burning"})
end,
})
fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
},
drop = "",
- groups = {dig_immediate = 2, attached_node = 1, connect_to_raillike = minetest.raillike_group("gunpowder")},
+ groups = {
+ dig_immediate = 2,
+ attached_node = 1,
+ connect_to_raillike = minetest.raillike_group("gunpowder")
+ },
sounds = default.node_sound_leaves_defaults(),
on_timer = function(pos, elapsed)
for dx = -1, 1 do
for dz = -1, 1 do
- for dy = -1, 1 do
- if not (dx == 0 and dz == 0) then
- tnt.burn({
- x = pos.x + dx,
- y = pos.y + dy,
- z = pos.z + dz,
- })
+ if math.abs(dx) + math.abs(dz) == 1 then
+ for dy = -1, 1 do
+ tnt.burn({
+ x = pos.x + dx,
+ y = pos.y + dy,
+ z = pos.z + dz,
+ })
+ end
end
end
end
- end
minetest.remove_node(pos)
end,
-- unaffected by explosions
end,
})
-minetest.register_abm({
- nodenames = {"group:tnt", "tnt:gunpowder"},
- neighbors = {"fire:basic_flame", "default:lava_source", "default:lava_flowing"},
- interval = 4,
- chance = 1,
- action = tnt.burn,
-})
-
minetest.register_craft({
- output = "tnt:gunpowder",
+ output = "tnt:gunpowder 5",
type = "shapeless",
recipe = {"default:coal_lump", "default:gravel"}
})
-minetest.register_craft({
- output = "tnt:tnt",
- recipe = {
- {"", "group:wood", ""},
- {"group:wood", "tnt:gunpowder", "group:wood"},
- {"", "group:wood", ""}
- }
-})
+if enable_tnt then
+ minetest.register_craft({
+ output = "tnt:tnt",
+ recipe = {
+ {"group:wood", "tnt:gunpowder", "group:wood"},
+ {"tnt:gunpowder", "tnt:gunpowder", "tnt:gunpowder"},
+ {"group:wood", "tnt:gunpowder", "group:wood"}
+ }
+ })
+
+ minetest.register_abm({
+ label = "TNT ignition",
+ nodenames = {"group:tnt", "tnt:gunpowder"},
+ neighbors = {"fire:basic_flame", "default:lava_source", "default:lava_flowing"},
+ interval = 4,
+ chance = 1,
+ action = function(pos, node)
+ tnt.burn(pos, node.name)
+ end,
+ })
+end
function tnt.register_tnt(def)
- local name = ""
+ local name
if not def.name:find(':') then
name = "tnt:" .. def.name
else
local tnt_side = def.tiles.side or def.name .. "_side.png"
local tnt_burning = def.tiles.burning or def.name .. "_top_burning_animated.png"
if not def.damage_radius then def.damage_radius = def.radius * 2 end
-
- minetest.register_node(":" .. name, {
- description = def.description,
- tiles = {tnt_top, tnt_bottom, tnt_side},
- is_ground_content = false,
- groups = {dig_immediate = 2, mesecon = 2, tnt = 1},
- sounds = default.node_sound_wood_defaults(),
- on_punch = function(pos, node, puncher)
- if puncher:get_wielded_item():get_name() == "default:torch" then
- minetest.set_node(pos, {name = name .. "_burning"})
- end
- end,
- on_blast = function(pos, intensity)
- minetest.after(0.1, function()
- tnt.boom(pos, def)
- end)
- end,
- mesecons = {effector =
- {action_on =
- function(pos)
- tnt.boom(pos, def)
+
+ if enable_tnt then
+ minetest.register_node(":" .. name, {
+ description = def.description,
+ tiles = {tnt_top, tnt_bottom, tnt_side},
+ is_ground_content = false,
+ groups = {dig_immediate = 2, mesecon = 2, tnt = 1, flammable = 5},
+ sounds = default.node_sound_wood_defaults(),
+ after_place_node = function(pos, placer)
+ if placer:is_player() then
+ local meta = minetest.get_meta(pos)
+ meta:set_string("owner", placer:get_player_name())
end
- }
- },
- })
-
+ end,
+ on_punch = function(pos, node, puncher)
+ if puncher:get_wielded_item():get_name() == "default:torch" then
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
+ minetest.log("action", puncher:get_player_name() ..
+ " ignites " .. node.name .. " at " ..
+ minetest.pos_to_string(pos))
+ end
+ end,
+ on_blast = function(pos, intensity)
+ minetest.after(0.1, function()
+ tnt.boom(pos, def)
+ end)
+ end,
+ mesecons = {effector =
+ {action_on =
+ function(pos)
+ tnt.boom(pos, def)
+ end
+ }
+ },
+ on_burn = function(pos)
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
+ end,
+ on_ignite = function(pos, igniter)
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
+ end,
+ })
+ end
+
minetest.register_node(":" .. name .. "_burning", {
tiles = {
{
light_source = 5,
drop = "",
sounds = default.node_sound_wood_defaults(),
+ groups = {falling_node = 1},
on_timer = function(pos, elapsed)
tnt.boom(pos, def)
end,
on_construct = function(pos)
minetest.sound_play("tnt_ignite", {pos = pos})
minetest.get_node_timer(pos):start(4)
+ minetest.check_for_falling(pos)
end,
})
end
tnt.register_tnt({
name = "tnt:tnt",
description = "TNT",
- radius = radius,
+ radius = tnt_radius,
})
-
projects / oweals / minetest_game.git / blobdiff