mirror of
https://github.com/luanti-org/minetest_game.git
synced 2025-10-30 23:25:33 +01:00
a2d4e57716
This will make sand and gravel blocks on top of TNT actually fly in the air. https://youtu.be/4omndVZijLc
501 lines
13 KiB
Lua
501 lines
13 KiB
Lua
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
|
|
end
|
|
|
|
-- loss probabilities array (one in X will be lost)
|
|
local loss_prob = {}
|
|
|
|
loss_prob["default:cobble"] = 3
|
|
loss_prob["default:dirt"] = 4
|
|
|
|
local radius = tonumber(minetest.setting_get("tnt_radius") or 3)
|
|
|
|
-- Fill a list with data for content IDs, after all nodes are registered
|
|
local cid_data = {}
|
|
minetest.after(0, function()
|
|
for name, def in pairs(minetest.registered_nodes) do
|
|
cid_data[minetest.get_content_id(name)] = {
|
|
name = name,
|
|
drops = def.drops,
|
|
flammable = def.groups.flammable,
|
|
on_blast = def.on_blast,
|
|
}
|
|
end
|
|
end)
|
|
|
|
local function rand_pos(center, pos, radius)
|
|
local def
|
|
local reg_nodes = minetest.registered_nodes
|
|
local i = 0
|
|
repeat
|
|
-- Give up and use the center if this takes too long
|
|
if i > 4 then
|
|
pos.x, pos.z = center.x, center.z
|
|
break
|
|
end
|
|
pos.x = center.x + math.random(-radius, radius)
|
|
pos.z = center.z + math.random(-radius, radius)
|
|
def = reg_nodes[minetest.get_node(pos).name]
|
|
i = i + 1
|
|
until def and not def.walkable
|
|
end
|
|
|
|
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
|
|
while count > 0 do
|
|
local take = math.max(1,math.min(take_est,
|
|
item:get_count(),
|
|
item:get_stack_max()))
|
|
rand_pos(pos, drop_pos, radius)
|
|
local obj = minetest.add_item(drop_pos, item:get_name() .. " " .. take)
|
|
if obj then
|
|
obj:get_luaentity().collect = true
|
|
obj:setacceleration({x = 0, y = -10, z = 0})
|
|
obj:setvelocity({x = math.random(-3, 3),
|
|
y = math.random(0, 10),
|
|
z = math.random(-3, 3)})
|
|
end
|
|
count = count - take
|
|
end
|
|
end
|
|
end
|
|
|
|
local function add_drop(drops, item)
|
|
item = ItemStack(item)
|
|
local name = item:get_name()
|
|
if loss_prob[name] ~= nil and math.random(1, loss_prob[name]) == 1 then
|
|
return
|
|
end
|
|
|
|
local drop = drops[name]
|
|
if drop == nil then
|
|
drops[name] = item
|
|
else
|
|
drop:set_count(drop:get_count() + item:get_count())
|
|
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
|
|
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}
|
|
return cid
|
|
elseif def.flammable then
|
|
return c_fire
|
|
else
|
|
local node_drops = minetest.get_node_drops(def.name, "")
|
|
for _, item in ipairs(node_drops) do
|
|
add_drop(drops, item)
|
|
end
|
|
return c_air
|
|
end
|
|
end
|
|
|
|
|
|
local function calc_velocity(pos1, pos2, old_vel, power)
|
|
local vel = vector.direction(pos1, pos2)
|
|
vel = vector.normalize(vel)
|
|
vel = vector.multiply(vel, power)
|
|
|
|
-- Divide by distance
|
|
local dist = vector.distance(pos1, pos2)
|
|
dist = math.max(dist, 1)
|
|
vel = vector.divide(vel, dist)
|
|
|
|
-- Add old velocity
|
|
vel = vector.add(vel, old_vel)
|
|
|
|
-- Limit to terminal velocity
|
|
dist = vector.length(vel)
|
|
if dist > 250 then
|
|
vel = vector.divide(vel, dist / 250)
|
|
end
|
|
return vel
|
|
end
|
|
|
|
local function entity_physics(pos, radius)
|
|
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)
|
|
end
|
|
end
|
|
|
|
local function add_effects(pos, radius, drops)
|
|
minetest.add_particlespawner({
|
|
amount = 128,
|
|
time = 1,
|
|
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},
|
|
minacc = vector.new(),
|
|
maxacc = vector.new(),
|
|
minexptime = 1,
|
|
maxexptime = 3,
|
|
minsize = 8,
|
|
maxsize = 16,
|
|
texture = "tnt_smoke.png",
|
|
})
|
|
|
|
-- we just dropped some items. Look at the items entities and pick
|
|
-- one of them to use as texture
|
|
local texture = "tnt_blast.png" --fallback texture
|
|
local most = 0
|
|
for name, stack in pairs(drops) do
|
|
local count = stack:get_count()
|
|
if count > most then
|
|
most = count
|
|
local def = minetest.registered_nodes[name]
|
|
if def and def.tiles and def.tiles[1] then
|
|
texture = def.tiles[1]
|
|
end
|
|
end
|
|
end
|
|
|
|
minetest.add_particlespawner({
|
|
amount = 64,
|
|
time = 0.1,
|
|
minpos = vector.subtract(pos, radius / 2),
|
|
maxpos = vector.add(pos, radius / 2),
|
|
minvel = {x = -3, y = 0, z = -3},
|
|
maxvel = {x = 3, y = 5, z = 3},
|
|
minacc = {x = 0, y = -10, z = 0},
|
|
maxacc = {x = 0, y = -10, z = 0},
|
|
minexptime = 0.8,
|
|
maxexptime = 2.0,
|
|
minsize = 2,
|
|
maxsize = 6,
|
|
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
|
|
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 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()
|
|
|
|
local drops = {}
|
|
local on_blast_queue = {}
|
|
|
|
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 vi = a:index(pos.x + (-radius), pos.y + y, pos.z + z)
|
|
for x = -radius, radius do
|
|
local r = vector.length(vector.new(x, y, z))
|
|
if (radius * radius) / (r * r) >= (pr:next(80, 125) / 100) then
|
|
local cid = data[vi]
|
|
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)
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
end
|
|
end
|
|
end
|
|
|
|
vm:set_data(data)
|
|
vm:write_to_map()
|
|
vm:update_map()
|
|
vm:update_liquids()
|
|
|
|
-- call nodeupdate for everything within 1.5x blast radius
|
|
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)
|
|
if r / radius < 1.4 then
|
|
nodeupdate(s)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
for _, data in ipairs(on_blast_queue) do
|
|
local dist = math.max(1, vector.distance(data.pos, pos))
|
|
local intensity = (radius * radius) / (dist * dist)
|
|
local node_drops = data.on_blast(data.pos, intensity)
|
|
if node_drops then
|
|
for _, item in ipairs(node_drops) do
|
|
add_drop(drops, item)
|
|
end
|
|
end
|
|
end
|
|
|
|
return drops
|
|
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)
|
|
if not def.disable_drops then
|
|
eject_drops(drops, pos, def.radius)
|
|
end
|
|
add_effects(pos, def.radius, drops)
|
|
end
|
|
|
|
minetest.register_node("tnt:boom", {
|
|
drawtype = "plantlike",
|
|
tiles = {"tnt_boom.png"},
|
|
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,
|
|
})
|
|
|
|
minetest.register_node("tnt:gunpowder", {
|
|
description = "Gun Powder",
|
|
drawtype = "raillike",
|
|
paramtype = "light",
|
|
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"},
|
|
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")},
|
|
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)
|
|
end
|
|
end,
|
|
on_blast = function(pos, intensity)
|
|
tnt.burn(pos)
|
|
end,
|
|
})
|
|
|
|
minetest.register_node("tnt:gunpowder_burning", {
|
|
drawtype = "raillike",
|
|
paramtype = "light",
|
|
sunlight_propagates = true,
|
|
walkable = false,
|
|
light_source = 5,
|
|
tiles = {{
|
|
name = "tnt_gunpowder_burning_straight_animated.png",
|
|
animation = {
|
|
type = "vertical_frames",
|
|
aspect_w = 16,
|
|
aspect_h = 16,
|
|
length = 1,
|
|
}
|
|
},
|
|
{
|
|
name = "tnt_gunpowder_burning_curved_animated.png",
|
|
animation = {
|
|
type = "vertical_frames",
|
|
aspect_w = 16,
|
|
aspect_h = 16,
|
|
length = 1,
|
|
}
|
|
},
|
|
{
|
|
name = "tnt_gunpowder_burning_t_junction_animated.png",
|
|
animation = {
|
|
type = "vertical_frames",
|
|
aspect_w = 16,
|
|
aspect_h = 16,
|
|
length = 1,
|
|
}
|
|
},
|
|
{
|
|
name = "tnt_gunpowder_burning_crossing_animated.png",
|
|
animation = {
|
|
type = "vertical_frames",
|
|
aspect_w = 16,
|
|
aspect_h = 16,
|
|
length = 1,
|
|
}
|
|
}},
|
|
selection_box = {
|
|
type = "fixed",
|
|
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")},
|
|
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,
|
|
})
|
|
end
|
|
end
|
|
end
|
|
end
|
|
minetest.remove_node(pos)
|
|
end,
|
|
-- unaffected by explosions
|
|
on_blast = function() end,
|
|
on_construct = function(pos)
|
|
minetest.sound_play("tnt_gunpowder_burning", {pos = pos, gain = 2})
|
|
minetest.get_node_timer(pos):start(1)
|
|
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",
|
|
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", ""}
|
|
}
|
|
})
|
|
|
|
function tnt.register_tnt(def)
|
|
local name = ""
|
|
if not def.name:find(':') then
|
|
name = "tnt:" .. def.name
|
|
else
|
|
name = def.name
|
|
def.name = def.name:match(":([%w_]+)")
|
|
end
|
|
if not def.tiles then def.tiles = {} end
|
|
local tnt_top = def.tiles.top or def.name .. "_top.png"
|
|
local tnt_bottom = def.tiles.bottom or def.name .. "_bottom.png"
|
|
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)
|
|
end
|
|
}
|
|
},
|
|
})
|
|
|
|
minetest.register_node(":" .. name .. "_burning", {
|
|
tiles = {
|
|
{
|
|
name = tnt_burning,
|
|
animation = {
|
|
type = "vertical_frames",
|
|
aspect_w = 16,
|
|
aspect_h = 16,
|
|
length = 1,
|
|
}
|
|
},
|
|
tnt_bottom, tnt_side
|
|
},
|
|
light_source = 5,
|
|
drop = "",
|
|
sounds = default.node_sound_wood_defaults(),
|
|
on_timer = function(pos, elapsed)
|
|
tnt.boom(pos, def)
|
|
end,
|
|
-- unaffected by explosions
|
|
on_blast = function() end,
|
|
on_construct = function(pos)
|
|
minetest.sound_play("tnt_ignite", {pos = pos})
|
|
minetest.get_node_timer(pos):start(4)
|
|
end,
|
|
})
|
|
end
|
|
|
|
tnt.register_tnt({
|
|
name = "tnt:tnt",
|
|
description = "TNT",
|
|
radius = radius,
|
|
})
|
|
|