738 lines
20 KiB
Lua
738 lines
20 KiB
Lua
if not tnt then
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tnt = {}
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end
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-- Default to enabled when in singleplayer
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local enable_tnt = minetest.settings:get_bool("enable_tnt")
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if enable_tnt == nil then
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enable_tnt = minetest.is_singleplayer()
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end
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-- loss probabilities array (one in X will be lost)
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tnt.loss_prob = {}
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tnt.loss_prob["default:cobble"] = 3
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tnt.loss_prob["default:dirt"] = 4
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local tnt_radius = tonumber(minetest.settings:get("tnt_radius") or 3)
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local tnt_entity_velocity_mul = tonumber(minetest.settings:get("tnt_revamped.tnt_entity_velocity_mul") or 2)
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local player_velocity_mul = tonumber(minetest.settings:get("tnt_revamped.player_velocity_mul") or 10)
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local entity_velocity_mul = tonumber(minetest.settings:get("tnt_revamped.entity_velocity_mul") or 10)
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local tnt_damage_nodes = minetest.settings:get_bool("tnt_revamped.damage_nodes") or false
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local tnt_damage_entities = minetest.settings:get_bool("tnt_revamped.damage_entities") or false
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local tnt_explosion = minetest.settings:get("tnt_revamped.explosion") or "default"
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local water_nodes = {}
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minetest.register_on_mods_loaded(function()
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for name, def in pairs(minetest.registered_nodes) do
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if def.liquidtype ~= "none" then
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water_nodes[name] = true
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end
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end
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end)
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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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minetest.register_on_mods_loaded(function()
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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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flammable = def.groups.flammable,
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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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local function rand_pos(center, pos, radius)
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local def
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local reg_nodes = minetest.registered_nodes
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local i = 0
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repeat
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-- Give up and use the center if this takes too long
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if i > 4 then
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pos.x, pos.z = center.x, center.z
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break
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end
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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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def = reg_nodes[minetest.get_node(pos).name]
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i = i + 1
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until def and not def.walkable
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end
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-- Just another eject_drops function may get rid of it in the future.
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local function eject_drops2(drops, pos)
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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.count or 1
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local dropitem = ItemStack(item.name)
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dropitem:set_count(count)
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local obj = minetest.add_item(drop_pos, dropitem)
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if obj then
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obj:get_luaentity().collect = true
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obj:set_acceleration({x = 0, y = -10, z = 0})
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obj:set_velocity({x = math.random(-3, 3),
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y = math.random(0, 10),
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z = math.random(-3, 3)})
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end
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end
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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 = math.min(item:get_count(), item:get_stack_max())
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while count > 0 do
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local take = math.max(1,math.min(radius * radius,
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count,
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item:get_stack_max()))
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rand_pos(pos, drop_pos, radius)
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local dropitem = ItemStack(item)
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dropitem:set_count(take)
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local obj = minetest.add_item(drop_pos, dropitem)
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if obj then
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obj:get_luaentity().collect = true
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obj:set_acceleration({x = 0, y = -10, z = 0})
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obj:set_velocity({x = math.random(-3, 3),
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y = math.random(0, 10),
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z = math.random(-3, 3)})
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end
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count = count - take
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end
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end
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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 tnt.loss_prob[name] ~= nil and math.random(1, tnt.loss_prob[name]) == 1 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 basic_flame_on_construct -- cached value
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local function destroy(drops, npos, cid, c_air, c_fire,
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on_blast_queue, on_construct_queue,
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ignore_protection, ignore_on_blast, owner)
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local def = cid_data[cid]
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if not def then
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return c_air
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elseif not ignore_on_blast and def.on_blast then
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on_blast_queue[#on_blast_queue + 1] = {
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pos = vector.new(npos),
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on_blast = def.on_blast
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}
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return cid
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elseif def.flammable and basic_flame_on_construct then
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on_construct_queue[#on_construct_queue + 1] = {
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fn = basic_flame_on_construct,
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pos = vector.new(npos)
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}
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return c_fire
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else
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local node_drops = minetest.get_node_drops(def.name, "")
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for _, item in pairs(node_drops) do
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add_drop(drops, item)
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end
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return c_air
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end
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end
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local function calc_velocity(pos1, pos2, old_vel, power)
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-- Avoid errors caused by a vector of zero length
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if vector.equals(pos1, pos2) then
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return old_vel
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end
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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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-- Limit to terminal velocity
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dist = vector.length(vel)
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if dist > 250 then
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vel = vector.divide(vel, dist / 250)
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end
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return vel
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end
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local function entity_physics(pos, radius, drops, in_water)
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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 dist = math.max(1, vector.distance(pos, obj_pos))
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local damage = (4 / dist) * radius
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if obj:is_player() then
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local obj_vel = obj:get_player_velocity()
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obj:add_player_velocity(calc_velocity(pos, obj_pos,
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obj_vel, radius * player_velocity_mul))
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if not in_water or (in_water and tnt_damage_entities) then
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local hp = obj:get_hp() - damage
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if hp < 0 then
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hp = 0
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end
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obj:set_hp(hp)
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end
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elseif obj:get_entity_name() ~= "tnt_revamped:empty_tnt_entity" then
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local do_damage = true
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local do_knockback = true
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local entity_drops = {}
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local luaobj = obj:get_luaentity()
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local objdef = minetest.registered_entities[luaobj.name]
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if objdef and objdef.on_blast then
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do_damage, do_knockback, entity_drops = objdef.on_blast(luaobj, damage)
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end
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if do_knockback then
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local obj_vel = obj:get_velocity()
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obj:add_velocity(calc_velocity(pos, obj_pos,
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obj_vel, radius * entity_velocity_mul))
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end
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if do_damage and (not in_water or (in_water and tnt_damage_entities)) then
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if not obj:get_armor_groups().immortal then
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obj:punch(obj, 1.0, {
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full_punch_interval = 1.0,
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damage_groups = {fleshy = damage},
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}, nil)
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end
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end
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for _, item in pairs(entity_drops) do
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add_drop(drops, item)
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end
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else
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obj:get_luaentity().timer = 0
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local obj_vel = obj:get_velocity()
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obj:add_velocity(calc_velocity(pos, obj_pos, obj_vel, radius * tnt_entity_velocity_mul))
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end
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end
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end
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local function add_effects(pos, radius, drops)
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minetest.add_particle({
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pos = pos,
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velocity = vector.new(),
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acceleration = vector.new(),
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expirationtime = 0.4,
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size = radius * 10,
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collisiondetection = false,
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vertical = false,
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texture = "tnt_boom.png",
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glow = 15,
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})
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minetest.add_particlespawner({
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amount = 64,
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time = 0.5,
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minpos = vector.subtract(pos, radius / 2),
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maxpos = vector.add(pos, radius / 2),
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minvel = {x = -10, y = -10, z = -10},
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maxvel = {x = 10, y = 10, z = 10},
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minacc = vector.new(),
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maxacc = vector.new(),
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minexptime = 1,
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maxexptime = 2.5,
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minsize = radius * 3,
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maxsize = radius * 5,
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texture = "tnt_smoke.png",
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})
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-- we just dropped some items. Look at the items entities and pick
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-- one of them to use as texture
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local texture = "tnt_blast.png" --fallback texture
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local most = 0
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for name, stack in pairs(drops) do
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local count = stack:get_count()
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if count > most then
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most = count
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local def = minetest.registered_nodes[name]
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if def and def.tiles and def.tiles[1] then
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texture = def.tiles[1]
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end
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end
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end
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minetest.add_particlespawner({
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amount = 64,
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time = 0.1,
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minpos = vector.subtract(pos, radius / 2),
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maxpos = vector.add(pos, radius / 2),
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minvel = {x = -3, y = 0, z = -3},
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maxvel = {x = 3, y = 5, z = 3},
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minacc = {x = 0, y = -10, z = 0},
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maxacc = {x = 0, y = -10, z = 0},
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minexptime = 0.8,
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maxexptime = 2.0,
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minsize = radius * 0.66,
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maxsize = radius * 2,
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texture = texture,
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collisiondetection = true,
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})
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end
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local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast, owner, explode_center, in_water)
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if in_water == nil then
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in_water = false
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end
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-- recalculate new radius
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radius = math.floor(radius * math.pow(1, 1/3))
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if not in_water or tnt_damage_nodes then
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pos = vector.round(pos)
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local p1 = vector.subtract(pos, 2)
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local p2 = vector.add(pos, 2)
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local count = 0
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local c_air = minetest.get_content_id("air")
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count = 1
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-- perform the explosion
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local vm = VoxelManip()
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local pr = PseudoRandom(os.time())
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p1 = vector.subtract(pos, radius)
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p2 = vector.add(pos, radius)
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local minp, maxp = vm:read_from_map(p1, p2)
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local a = 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 on_blast_queue = {}
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local on_construct_queue = {}
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local c_fire
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if minetest.registered_nodes["fire:basic_flame"] then
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basic_flame_on_construct = minetest.registered_nodes["fire:basic_flame"].on_construct
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c_fire = minetest.get_content_id("fire:basic_flame")
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end
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for z = -radius, radius do
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for y = -radius, radius do
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local vi = a:index(pos.x + (-radius), pos.y + y, pos.z + z)
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for x = -radius, radius do
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local r = vector.length(vector.new(x, y, z))
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if (radius * radius) / (r * r) >= (pr:next(80, 125) / 100) then
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local cid = data[vi]
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local p = {x = pos.x + x, y = pos.y + y, z = pos.z + z}
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if cid ~= c_air then
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data[vi] = destroy(drops, p, cid, c_air, c_fire,
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on_blast_queue, on_construct_queue,
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ignore_protection, ignore_on_blast, owner)
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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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vm:update_map()
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vm:update_liquids()
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-- call check_single_for_falling for everything within 1.5x blast radius
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for y = -radius * 1.5, radius * 1.5 do
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for z = -radius * 1.5, radius * 1.5 do
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for x = -radius * 1.5, radius * 1.5 do
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local rad = {x = x, y = y, z = z}
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local s = vector.add(pos, rad)
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local r = vector.length(rad)
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if r / radius < 1.4 then
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minetest.check_single_for_falling(s)
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end
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end
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end
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end
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for _, queued_data in pairs(on_blast_queue) do
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local dist = math.max(1, vector.distance(queued_data.pos, pos))
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local intensity = (radius * radius) / (dist * dist)
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local node_drops = queued_data.on_blast(queued_data.pos, intensity, pos)
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if node_drops then
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for _, item in pairs(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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end
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for _, queued_data in pairs(on_construct_queue) do
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queued_data.fn(queued_data.pos)
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end
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minetest.log("action", "TNT owned by " .. owner .. " detonated at " ..
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minetest.pos_to_string(pos) .. " with radius " .. radius)
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return drops, radius
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end
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minetest.log("action", "TNT owned by " .. owner .. " detonated at " ..
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minetest.pos_to_string(pos) .. " with radius " .. radius)
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return {}, radius
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end
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function tnt.boom(pos, def, owner, in_water)
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local def1 = def or {}
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def1.radius = def.radius or 1
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def1.damage_radius = def.damage_radius or def.radius * 2
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if not owner then
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owner = "<Unknown>"
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end
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if def.boom_sound then
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if not def.boom_sound.def then
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def.boom_sound.def = {}
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end
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def.boom_sound.def.pos = pos
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minetest.sound_play(def.boom_sound.name, def.boom_sound.def)
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end
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local drops, radius = tnt_explode(pos, def1.radius, def1.ignore_protection,
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def1.ignore_on_blast, owner, def1.explode_center, in_water)
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-- append entity drops
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local damage_radius = (radius / math.max(1, def1.radius)) * def1.damage_radius
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entity_physics(pos, damage_radius, drops, in_water)
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if not def1.disable_drops then
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eject_drops(drops, pos, radius)
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end
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add_effects(pos, radius, drops)
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minetest.log("action", "A TNT explosion occurred at " .. minetest.pos_to_string(pos) ..
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" with radius " .. radius)
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end
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function tnt.create_entity(pos, owner, jump, def)
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local obj = minetest.add_entity(pos, "tnt_revamped:empty_tnt_entity")
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local ent = obj:get_luaentity()
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ent.def = def
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local old_meta = minetest.get_meta(pos)
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if not owner then
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owner = old_meta:get_string("owner")
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end
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ent.owner = owner
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obj:set_acceleration({x = 0, y = -10, z = 0})
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if jump then
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obj:set_velocity({x = 0, y = jump, z = 0})
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end
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local oldnode = old_meta:get_string("oldnode")
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local old_param2 = old_meta:get_string("old_param2")
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if oldnode ~= "" and old_param2 ~= "" then
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minetest.set_node(pos, {name = oldnode, param2 = tonumber(old_param2)})
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ent.flow = true
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elseif oldnode ~= "" then
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minetest.set_node(pos, {name = oldnode})
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else
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minetest.remove_node(pos)
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end
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return obj
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end
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local function node_ok(pos)
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local node = minetest.get_node_or_nil(pos)
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if node and minetest.registered_nodes[node.name] then
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return node
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end
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return minetest.registered_nodes["default:dirt"]
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end
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|
|
-- water flow functions by QwertyMine3, edited by TenPlus1
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|
-- Copied from https://notabug.org/TenPlus1/builtin_item
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local function to_unit_vector(dir_vector)
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|
|
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local inv_roots = {
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[0] = 1,
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[1] = 1,
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[2] = 0.70710678118655,
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[4] = 0.5,
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[5] = 0.44721359549996,
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[8] = 0.35355339059327
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}
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local sum = dir_vector.x * dir_vector.x + dir_vector.z * dir_vector.z
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return {
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x = dir_vector.x * inv_roots[sum],
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y = dir_vector.y,
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z = dir_vector.z * inv_roots[sum]
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}
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end
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|
|
local function quick_flow_logic(node, pos_testing, direction)
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|
|
|
local node_testing = node_ok(pos_testing)
|
|
|
|
if minetest.registered_nodes[node_testing.name].liquidtype ~= "flowing"
|
|
and minetest.registered_nodes[node_testing.name].liquidtype ~= "source" then
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return 0
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|
end
|
|
|
|
local param2_testing = node_testing.param2
|
|
|
|
if param2_testing < node.param2 then
|
|
|
|
if (node.param2 - param2_testing) > 6 then
|
|
return -direction
|
|
else
|
|
return direction
|
|
end
|
|
|
|
elseif param2_testing > node.param2 then
|
|
|
|
if (param2_testing - node.param2) > 6 then
|
|
return direction
|
|
else
|
|
return -direction
|
|
end
|
|
end
|
|
|
|
return 0
|
|
end
|
|
|
|
local function quick_flow(pos, node)
|
|
|
|
if minetest.registered_nodes[node.name].liquidtype == "none" then
|
|
return {x = 0, y = 0, z = 0}
|
|
end
|
|
|
|
local x, z = 0, 0
|
|
|
|
x = x + quick_flow_logic(node, {x = pos.x - 1, y = pos.y, z = pos.z},-1)
|
|
x = x + quick_flow_logic(node, {x = pos.x + 1, y = pos.y, z = pos.z}, 1)
|
|
z = z + quick_flow_logic(node, {x = pos.x, y = pos.y, z = pos.z - 1},-1)
|
|
z = z + quick_flow_logic(node, {x = pos.x, y = pos.y, z = pos.z + 1}, 1)
|
|
|
|
return to_unit_vector({x = x, y = 0, z = z})
|
|
end
|
|
|
|
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.png"
|
|
if not def.damage_radius then def.damage_radius = def.radius * 2 end
|
|
if not def.time then def.time = 4 end
|
|
if not def.jump then def.jump = 3 end
|
|
|
|
if enable_tnt then
|
|
local function ignite_sound_func(pos)
|
|
if def.ignite_sound then
|
|
if not def.ignite_sound.def then
|
|
def.ignite_sound.def = {}
|
|
end
|
|
def.ignite_sound.def.pos = pos
|
|
minetest.sound_play(def.ignite_sound.name, def.ignite_sound.def)
|
|
end
|
|
end
|
|
local tiles = {tnt_burning,
|
|
tnt_bottom, tnt_side, tnt_side, tnt_side, tnt_side
|
|
}
|
|
|
|
local function convert_to_entity(pos, def, tiles)
|
|
local meta = minetest.get_meta(pos)
|
|
local name = meta:get_string("owner") or nil
|
|
ignite_sound_func(pos)
|
|
local obj = tnt.create_entity(pos, name, def.jump, def)
|
|
obj:set_properties({textures = tiles, visual = "cube", visual_size = {x = 1, y = 1, z = 1}})
|
|
local ent = obj:get_luaentity()
|
|
if ent then
|
|
ent.time = def.time
|
|
end
|
|
end
|
|
|
|
local node_def = {
|
|
description = def.description,
|
|
tiles = {tnt_top, tnt_bottom, tnt_side},
|
|
is_ground_content = false,
|
|
groups = {dig_immediate = 2, mesecon = 2, tnt = 1, flammable = 5, explosive = def.radius, blast_resistance = 25, strength = def.strength},
|
|
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)
|
|
local item_name = puncher:get_wielded_item():get_name()
|
|
local player_name = puncher:get_player_name()
|
|
if minetest.registered_items[item_name].groups.torch then
|
|
if minetest.is_protected(pos, player_name) then
|
|
minetest.chat_send_player(player_name, "This area is protected")
|
|
return
|
|
end
|
|
convert_to_entity(pos, def, tiles)
|
|
end
|
|
end,
|
|
on_blast = function(pos, intensity, blaster)
|
|
convert_to_entity(pos, def, tiles)
|
|
end,
|
|
on_blast_break = function(pos)
|
|
convert_to_entity(pos, def, tiles)
|
|
end,
|
|
mesecons = {effector =
|
|
{action_on =
|
|
function(pos)
|
|
convert_to_entity(pos, def, tiles)
|
|
end
|
|
}
|
|
},
|
|
on_burn = function(pos)
|
|
convert_to_entity(pos, def, tiles)
|
|
end,
|
|
on_ignite = function(pos, igniter)
|
|
convert_to_entity(pos, def, tiles)
|
|
end,
|
|
}
|
|
if not minetest.registered_nodes[name] then
|
|
minetest.register_node(":" .. name, node_def)
|
|
else
|
|
minetest.override_item(name, node_def)
|
|
end
|
|
end
|
|
end
|
|
|
|
minetest.register_entity("tnt_revamped:empty_tnt_entity", {
|
|
name = "empty_tnt_entity",
|
|
timer = 0,
|
|
time = 0,
|
|
def = {},
|
|
drops = {},
|
|
selectionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
|
|
physical = true,
|
|
collide_with_objects = false,
|
|
static_save = false,
|
|
owner = "",
|
|
on_step = function(self, dtime)
|
|
self.time = self.time - dtime
|
|
local pos = self.object:get_pos()
|
|
local v = self.object:get_velocity()
|
|
local flow = self.flow
|
|
|
|
-- water flowing
|
|
if flow then
|
|
local node = minetest.get_node_or_nil(pos)
|
|
local def_ = node and minetest.registered_nodes[node.name]
|
|
|
|
if def_ and def_.liquidtype == "flowing" then
|
|
local vec = quick_flow(pos, node)
|
|
self.object:set_velocity({x = vec.x, y = v.y, z = vec.z})
|
|
else
|
|
self.timer = self.timer + dtime
|
|
end
|
|
else
|
|
self.timer = self.timer + dtime
|
|
end
|
|
|
|
if self.timer >= 0.2 then
|
|
local node = minetest.env:get_node({x = pos.x, y = pos.y - 0.667, z = pos.z})
|
|
local node_name = node.name
|
|
local r_node = minetest.registered_nodes[node_name]
|
|
if r_node.walkable then
|
|
self.object:set_velocity({x = 0, y = 0, z = 0})
|
|
elseif not flow and r_node.liquidtype then
|
|
self.flow = true
|
|
end
|
|
|
|
self.timer = 0
|
|
end
|
|
|
|
if self.time <= 0 then
|
|
if water_nodes[minetest.get_node(pos).name] then
|
|
tnt.boom(pos, self.def, self.owner, true)
|
|
else
|
|
tnt.boom(pos, self.def, self.owner, false)
|
|
end
|
|
if self.drops then
|
|
eject_drops2(self.drops, pos, self.def.radius)
|
|
end
|
|
self.object:remove()
|
|
end
|
|
end,
|
|
on_blast = function(pos, intensity, blaster)
|
|
return
|
|
end,
|
|
get_staticdata = function(self)
|
|
return minetest.serialize({timer = self.timer, time = self.time, flow = self.flow, owner = self.owner, def = self.def, drops = self.drops})
|
|
end,
|
|
on_activate = function(self, staticdata)
|
|
self.object:set_armor_groups({immortal = 1})
|
|
local ds = core.deserialize(staticdata)
|
|
if ds then
|
|
self.timer = ds.timer
|
|
self.time = ds.time
|
|
self.owner = ds.owner
|
|
self.flow = ds.flow
|
|
self.def = ds.def
|
|
self.drops = ds.drops
|
|
end
|
|
end,
|
|
})
|
|
|
|
if minetest.registered_nodes["tnt:tnt"] then
|
|
tnt.register_tnt({
|
|
name = "tnt:tnt",
|
|
description = "TNT",
|
|
radius = tnt_radius,
|
|
strength = 1000,
|
|
time = 4,
|
|
jump = 3,
|
|
ignite_sound = {name = "tnt_ignite"},
|
|
boom_sound = {name = "tnt_explode", def = {gain = 2.5, max_hear_distance = 128}}
|
|
})
|
|
end
|
|
if tnt_explosion == "explosions" then
|
|
local old_boom = tnt.boom
|
|
tnt.boom = function(pos, def, owner, in_water)
|
|
if not in_water or tnt_damage_nodes then
|
|
explosions.explode(pos, def)
|
|
else
|
|
old_boom(pos, def, owner, in_water)
|
|
end
|
|
end
|
|
end
|
|
minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing)
|
|
local groups = minetest.registered_nodes[newnode.name].groups
|
|
if groups.tnt or groups.volatile then
|
|
local meta = minetest.get_meta(pos)
|
|
local name = oldnode.name
|
|
local def = minetest.registered_items[name]
|
|
if def.liquidtype == "flowing" then
|
|
meta:set_string("oldnode", name)
|
|
meta:set_string("old_param2", oldnode.param2)
|
|
else
|
|
meta:set_string("oldnode", name)
|
|
end
|
|
end
|
|
end)
|