a715f96818
Adds a minor helper function that allows efficient retrieval of several inventories from a node inventory. We use this helper to quickly retrieve the items in chests, vessel shelves, book shelves and furnaces, and return these with the nodes itself to the TNT caller. The TNT caller then performs the entity physics, and we don't need to do anything else. We disable TNT doing anything with bones. We expose a bug in the code that drops the items - metadata was lost entirely. This patch corrects that by properly copying the metadata and creating the drops list inclusive metadata.
503 lines
13 KiB
Lua
503 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 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})
|
|
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,
|
|
})
|
|
|