607 lines
16 KiB
Lua
607 lines
16 KiB
Lua
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--
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-- TNT mod
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--
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local S = minetest.get_translator("rp_tnt")
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-- Time in seconds before TNT explodes after ignited
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local TNT_TIMER = 2.0
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-- For performance debugging
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local TNT_NO_PARTICLES = false
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local TNT_NO_SOUNDS = false
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tnt = {}
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local particlespawners = {}
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-- Default to enabled in singleplayer and disabled in multiplayer
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local singleplayer = minetest.is_singleplayer()
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local setting = minetest.settings:get_bool("tnt_enable")
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local mod_attached = minetest.get_modpath("rp_attached") ~= nil
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local tnt_enable
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if (not singleplayer and setting ~= true) or (singleplayer and setting == false) then
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tnt_enable = false
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else
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tnt_enable = true
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end
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local tnt_radius = tonumber(minetest.settings:get("tnt_radius") or 3)
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-- Loss probabilities array (one in X will be lost)
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local loss_prob = {
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["rp_default:cobble"] = 3,
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["group:dirt"] = 4,
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}
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-- Fill a list with data for content IDs, after all nodes are registered
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local cid_data = {}
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local function rand_pos(center, pos, radius)
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pos.x = center.x + math.random(-radius, radius)
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pos.z = center.z + math.random(-radius, radius)
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end
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local function eject_drops(drops, pos, radius)
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local drop_pos = vector.new(pos)
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for _, item in pairs(drops) do
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local count = item:get_count()
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local max = item:get_stack_max()
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if count > max then
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item:set_count(max)
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end
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while count > 0 do
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if count < max then
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item:set_count(count)
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end
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rand_pos(pos, drop_pos, radius)
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local obj = minetest.add_item(drop_pos, item)
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if obj then
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obj:get_luaentity().collect = true
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obj:set_velocity({x=math.random(-3, 3), y=10,
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z=math.random(-3, 3)})
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end
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count = count - max
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end
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end
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end
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-- Checks if the given item would be lost
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local check_loss = function(itemname)
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if loss_prob[itemname] ~= nil then
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if math.random(1, loss_prob[itemname]) == 1 then
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return true
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end
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else
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for k,v in pairs(loss_prob) do
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if string.sub(k, 1, 6) == "group:" then
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local group = string.sub(k, 7)
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if minetest.get_item_group(itemname, group) ~= 0 then
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if math.random(1, v) == 1 then
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return true
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end
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end
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end
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end
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end
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return false
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end
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local function add_drop(drops, item)
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item = ItemStack(item)
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local name = item:get_name()
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if check_loss(name) then
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return
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end
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local drop = drops[name]
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if drop == nil then
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drops[name] = item
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else
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drop:set_count(drop:get_count() + item:get_count())
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end
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end
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local function check_destroy(drops, pos, cid)
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if minetest.is_protected(pos, "") then
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return false, "protected"
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end
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local def = cid_data[cid]
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if def and def.on_blast then
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return false, "on_blast"
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end
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if def then
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local node_drops = minetest.get_node_drops(def.name, "")
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for _, item in ipairs(node_drops) do
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add_drop(drops, item)
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end
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end
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return true
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end
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local function calc_velocity(pos1, pos2, power)
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local vel = vector.direction(pos1, pos2)
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vel = vector.normalize(vel)
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vel = vector.multiply(vel, power)
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-- Divide by distance
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local dist = vector.distance(pos1, pos2)
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dist = math.max(dist, 1)
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vel = vector.divide(vel, dist)
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return vel
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end
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local function entity_physics(pos, radius, igniter)
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-- Make the damage radius larger than the destruction radius
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radius = radius * 2
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local objs = minetest.get_objects_inside_radius(pos, radius)
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for _, obj in pairs(objs) do
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local obj_pos = obj:get_pos()
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local obj_vel = obj:get_velocity()
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local dist = math.max(1, vector.distance(pos, obj_pos))
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if obj_vel ~= nil then
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obj:add_velocity(calc_velocity(pos, obj_pos, radius*2.5))
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end
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local damage = (4 / dist) * radius
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local dir = vector.direction(pos, obj_pos)
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local puncher
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if igniter then
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puncher = igniter
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else
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puncher = obj
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end
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obj:punch(puncher, 1000000, { full_punch_interval = 0, damage_groups = { fleshy = damage } }, dir)
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end
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end
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local function add_node_break_effects(pos, node, node_tile)
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if TNT_NO_PARTICLES then
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return
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end
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minetest.add_particlespawner(
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{
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amount = 40,
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time = 0.1,
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pos = {
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min = vector.subtract(pos, 0.4),
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max = vector.add(pos, 0.4),
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},
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vel = {
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min = vector.new(-5, -5, -5),
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max = vector.new(5, 5, 5),
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},
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acc = vector.new(0, -9.81, 0),
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exptime = { min = 0.2, max = 0.6 },
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size = { min = 1.0, max = 1.5 },
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node = node,
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node_tile = node_tile,
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})
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end
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local function add_explosion_effects(pos, radius)
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if TNT_NO_PARTICLES then
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return
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end
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minetest.add_particlespawner(
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{
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amount = 128,
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time = 0.6,
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pos = {
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min = vector.subtract(pos, radius / 2),
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max = vector.add(pos, radius / 2),
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},
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vel = {
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min = vector.new(-20, -20, -20),
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max = vector.new(20, 20, 20),
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},
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acc = vector.zero(),
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exptime = { min = 0.2, max = 1.0 },
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size = { min = 16, max = 24 },
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drag = vector.new(1,1,1),
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texture = {
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name = "rp_tnt_smoke_anim_1.png", animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = -1 },
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name = "rp_tnt_smoke_anim_2.png", animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = -1 },
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name = "rp_tnt_smoke_anim_1.png^[transformFX", animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = -1 },
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name = "rp_tnt_smoke_anim_2.png^[transformFX", animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = -1 },
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},
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})
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minetest.add_particlespawner({
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amount = 1,
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time = 0.01,
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pos = pos,
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vel = vector.zero(),
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acc = vector.zero(),
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exptime = 1,
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size = radius*10,
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texture = "rp_tnt_smoke_ball_big.png",
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animation = { type = "vertical_frames", aspect_w = 32, aspect_h = 32, length = -1, },
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})
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minetest.add_particlespawner({
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amount = 4,
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time = 0.25,
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pos = pos,
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vel = vector.zero(),
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acc = vector.zero(),
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exptime = { min = 0.6, max = 0.9 },
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size = { min = 8, max = 12 },
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radius = { min = 0.5, max = math.max(0.6, radius*0.75) },
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texture = "rp_tnt_smoke_ball_medium.png",
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animation = { type = "vertical_frames", aspect_w = 32, aspect_h = 32, length = -1, },
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})
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minetest.add_particlespawner({
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amount = 28,
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time = 0.5,
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pos = pos,
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vel = vector.zero(),
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acc = vector.zero(),
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exptime = { min = 0.5, max = 0.8 },
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size = { min = 6, max = 8 },
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radius = { min = 1, max = math.max(1.1, radius+1) },
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texture = "rp_tnt_smoke_ball_small.png",
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animation = { type = "vertical_frames", aspect_w = 32, aspect_h = 32, length = -1, },
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})
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end
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local function emit_fuse_smoke(pos)
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if TNT_NO_PARTICLES then
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return
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end
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local minpos = vector.add(pos, vector.new(1/16, 0.5, 4/16))
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local maxpos = vector.add(pos, vector.new(2/16, 0.5, 5/16))
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local minvel = vector.new(0.2 - 0.1, 2.0, 0.2 - 0.1)
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local maxvel = vector.new(-0.2 - 0.1, 0.0, -0.2 - 0.1)
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local acc = vector.new(0, -0.1, 0)
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return minetest.add_particlespawner({
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time = TNT_TIMER,
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amount = 40,
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pos = { min = minpos, max = maxpos },
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vel = { min = minvel, max = maxvel },
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acc = acc,
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exptime = { min = 0.05, max = 0.6 },
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size = { min = 0.25, max = 2.0 },
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collisiondetection = false,
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texture = {
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name = "tnt_smoke_fuse.png",
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alpha_tween = { 1, 0, start = 0.75 },
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},
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})
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end
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-- Ignite TNT at pos.
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-- igniter: Optional player object of player who ignited it or nil if nobody
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function tnt.burn(pos, igniter)
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local name = minetest.get_node(pos).name
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if tnt_enable and name == "rp_tnt:tnt" then
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minetest.set_node(pos, {name = "rp_tnt:tnt_burning"})
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if igniter then
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achievements.trigger_achievement(igniter, "boom")
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if igniter:is_player() then
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local meta = minetest.get_meta(pos)
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meta:set_string("igniter", igniter:get_player_name())
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end
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minetest.log("action", "[rp_tnt] TNT ignited by "..igniter:get_player_name().." at "..minetest.pos_to_string(pos, 0))
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else
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minetest.log("verbose", "[rp_tnt] TNT ignited at "..minetest.pos_to_string(pos, 0))
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end
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end
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end
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local function play_tnt_sound(pos, sound)
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if TNT_NO_SOUNDS then
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return
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end
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minetest.sound_play(
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sound,
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{
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pos = pos,
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gain = 1.5,
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max_hear_distance = 128
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}, true)
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end
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-- TNT ground removal
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function tnt.explode(pos, radius)
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local pos = vector.round(pos)
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local vm = VoxelManip()
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local pr = PseudoRandom(os.time())
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local p1 = vector.subtract(pos, radius)
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local p2 = vector.add(pos, radius)
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local minp, maxp = vm:read_from_map(p1, p2)
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local area = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
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local data = vm:get_data()
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local drops = {}
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local p = {}
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local c_air = minetest.get_content_id("air")
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local destroyed_nodes = {}
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local on_blasts = {}
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for z = -radius, radius do
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for y = -radius, radius do
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local vi = area:index(pos.x + (-radius), pos.y + y, pos.z + z)
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for x = -radius, radius do
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if (x * x) + (y * y) + (z * z) <= (radius * radius) + pr:next(-radius, radius) then
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local cid = data[vi]
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p.x = pos.x + x
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p.y = pos.y + y
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p.z = pos.z + z
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if cid ~= c_air then
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local destroy, fail_reason = check_destroy(drops, p, cid)
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if destroy == true then
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data[vi] = minetest.CONTENT_AIR
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local pp = {x=p.x, y=p.y, z=p.z}
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table.insert(destroyed_nodes, {vi=vi, pos=pp})
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elseif destroy == false and fail_reason == "on_blast" then
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local pp = {x=p.x, y=p.y, z=p.z}
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table.insert(on_blasts, {pos=pp, cid=cid})
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end
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end
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end
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vi = vi + 1
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end
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end
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end
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vm:set_data(data)
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vm:write_to_map()
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for i=1, #on_blasts do
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local pp = on_blasts[i].pos
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local cid = on_blasts[i].cid
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local def = cid_data[cid]
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def.on_blast(vector.new(pp), 1)
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end
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for i=1, #destroyed_nodes do
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local pp = destroyed_nodes[i].pos
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local vi = destroyed_nodes[i].vi
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minetest.check_for_falling(pp)
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if mod_attached then
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rp_attached.detach_from_node(pp)
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end
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end
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return drops
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end
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-- TNT node explosion
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local function rawboom(pos, radius, sound, remove_nodes, is_tnt, igniter)
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if is_tnt then
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local node = minetest.get_node(pos)
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minetest.remove_node(pos)
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add_node_break_effects(pos, node, 0)
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if is_tnt and not tnt_enable then
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local pp = {x=pos.x, y=pos.y, z=pos.z}
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minetest.check_for_falling(pp)
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if mod_attached then
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rp_attached.detach_from_node(pp)
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end
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return
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end
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end
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if remove_nodes then
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local drops = tnt.explode(pos, radius, sound)
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play_tnt_sound(pos, sound)
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if is_tnt then
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minetest.log("verbose", "[rp_tnt] TNT exploded at "..minetest.pos_to_string(pos, 0))
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else
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minetest.log("verbose", "[rp_tnt] Explosion at "..minetest.pos_to_string(pos, 0))
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end
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entity_physics(pos, radius, igniter)
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eject_drops(drops, pos, radius)
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else
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entity_physics(pos, radius, igniter)
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play_tnt_sound(pos, sound)
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end
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add_explosion_effects(pos, radius)
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end
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function tnt.boom(pos, radius, sound, igniter)
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if not radius then
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radius = tnt_radius
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end
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if not sound then
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sound = "tnt_explode"
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end
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rawboom(pos, radius, sound, true, true, igniter)
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end
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function tnt.boom_notnt(pos, radius, sound, remove_nodes, igniter)
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if not radius then
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radius = tnt_radius
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end
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if not sound then
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sound = "tnt_explode"
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end
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if remove_nodes == nil then
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remove_nodes = tnt_enable
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end
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rawboom(pos, radius, sound, remove_nodes, false, igniter)
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end
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-- On load register content IDs
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local function on_load()
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for name, def in pairs(minetest.registered_nodes) do
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cid_data[minetest.get_content_id(name)] = {
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name = name,
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drops = def.drops,
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on_blast = def.on_blast,
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}
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end
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end
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minetest.register_on_mods_loaded(on_load)
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-- Nodes
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local top_tex, desc, tt
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if tnt_enable then
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top_tex = "tnt_top.png"
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desc = S("TNT")
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tt = S("Will explode when ignited by flint and steel")
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else
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top_tex = "tnt_top_disabled.png"
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desc = S("TNT (defused)")
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tt = S("It's harmless")
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end
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minetest.register_node(
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"rp_tnt:tnt",
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{
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description = desc,
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_tt_help = tt,
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_rp_tt_has_ignitible_text = true, -- prevent rp_tt mod from adding automatic tooltip
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tiles = {top_tex, "tnt_bottom.png", "tnt_sides.png"},
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is_ground_content = false,
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groups = {handy = 2, interactive_node=1},
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sounds = rp_sounds.node_sound_wood_defaults(),
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on_blast = function(pos, intensity)
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if tnt_enable then
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tnt.burn(pos)
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end
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end,
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_rp_on_ignite = function(pos, itemstack, user)
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if not tnt_enable then
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return
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end
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tnt.burn(pos, user)
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return { sound = false }
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end,
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})
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local tnt_burning_on_timer = function(pos)
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local meta = minetest.get_meta(pos)
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local igniter_name = meta:get_string("igniter")
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local igniter = minetest.get_player_by_name(igniter_name)
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tnt.boom(pos, nil, nil, igniter)
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end
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-- Nodes
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minetest.register_node(
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"rp_tnt:tnt_burning",
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{
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description = S("TNT (ignited)"),
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_tt_help = S("Will explode after being placed"),
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tiles = {
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{
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name = "tnt_top_burning.png",
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animation = {
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type = "vertical_frames",
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aspect_w = 16,
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aspect_h = 16,
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length = 1,
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}
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},
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"tnt_bottom.png", "tnt_sides.png"},
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|
light_source = 5,
|
|
drop = "",
|
|
is_ground_content = false,
|
|
groups = {handy = 2, not_in_creative_inventory=1},
|
|
sounds = rp_sounds.node_sound_wood_defaults(),
|
|
on_timer = tnt_burning_on_timer,
|
|
on_construct = function(pos)
|
|
if tnt_enable then
|
|
local timer = minetest.get_node_timer(pos)
|
|
if TNT_NO_SOUNDS == false then
|
|
minetest.sound_play("tnt_ignite", {pos = pos}, true)
|
|
end
|
|
local id = emit_fuse_smoke(pos)
|
|
if id ~= -1 and TNT_NO_PARTICLES == false then
|
|
local hash = minetest.hash_node_position(pos)
|
|
particlespawners[hash] = id
|
|
minetest.after(TNT_TIMER, function()
|
|
if particlespawners[hash] == id then
|
|
particlespawners[hash] = nil
|
|
end
|
|
end)
|
|
end
|
|
timer:start(TNT_TIMER)
|
|
else
|
|
minetest.set_node(pos, {name="rp_tnt:tnt"})
|
|
end
|
|
end,
|
|
after_destruct = function(pos)
|
|
if TNT_NO_PARTICLES then
|
|
return
|
|
end
|
|
local hash = minetest.hash_node_position(pos)
|
|
local id = particlespawners[hash]
|
|
if id then
|
|
minetest.delete_particlespawner(id)
|
|
particlespawners[hash] = nil
|
|
end
|
|
end,
|
|
on_blast = function(pos)
|
|
-- Force timer to restart if the timer was halted for some reason
|
|
local timer = minetest.get_node_timer(pos)
|
|
if not timer:is_started() then
|
|
if TNT_NO_SOUNDS == false then
|
|
minetest.sound_play("tnt_ignite", {pos = pos}, true)
|
|
end
|
|
timer:start(TNT_TIMER)
|
|
end
|
|
end,
|
|
})
|
|
|
|
|
|
-- Crafting
|
|
|
|
crafting.register_craft(
|
|
{
|
|
output = "rp_tnt:tnt",
|
|
items = {
|
|
"group:planks 4",
|
|
"rp_default:flint_and_steel",
|
|
}
|
|
})
|
|
|
|
-- Achievements
|
|
|
|
local title, desc
|
|
if tnt_enable then
|
|
achievements.register_achievement(
|
|
"boom",
|
|
{
|
|
title = S("Boom!"),
|
|
description = S("Ignite TNT."),
|
|
times = 1,
|
|
-- Use inventorycube to make sure the icon renders correctly
|
|
icon = minetest.inventorycube("tnt_top_burning_static.png", "tnt_sides.png", "tnt_sides.png"),
|
|
difficulty = 4.9,
|
|
})
|
|
else
|
|
achievements.register_achievement(
|
|
"boom",
|
|
{
|
|
title = S("Boom?"),
|
|
description = S("Craft defused TNT."),
|
|
times = 1,
|
|
craftitem = "rp_tnt:tnt",
|
|
-- difficulty slightly lower than for “Boom!” because of fewer materials required
|
|
difficulty = 4.6,
|
|
})
|
|
end
|
|
|
|
-- Load aliases
|
|
dofile(minetest.get_modpath("rp_tnt").."/aliases.lua")
|