451 lines
11 KiB
Lua
451 lines
11 KiB
Lua
tnt = {}
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-- loss probabilities array (one in X will be lost)
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local loss_prob = {}
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loss_prob["default:cobble"] = 3
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loss_prob["default:dirt"] = 4
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loss_prob["tnt:tnt"] = 1
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local radius = tonumber(minetest.setting_get("tnt_radius") or 3)
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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.after(0, 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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groups = def.groups,
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}
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end
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end)
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function tnt: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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function tnt: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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tnt: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:setacceleration({x=0, y=-10, z=0})
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obj:setvelocity({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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function tnt: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 loss_prob[name] ~= nil and math.random(1, 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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function tnt:destroy(drops, pos, cid)
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if minetest.is_protected(pos, "") then
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return
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end
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local def = cid_data[cid]
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-- bedrock
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if def and def.groups.immortal ~= nil then
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return
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end
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-- obsidian
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if def and def.name == "default:obsidian" then
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return
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end
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minetest.remove_node(pos)
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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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tnt:add_drop(drops, item)
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end
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end
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end
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function tnt:calc_velocity(pos1, pos2, old_vel, power)
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pos1.y = pos1.y - 3 -- make the player fly upwards even when TNT is on same level
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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, 3)
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vel = vector.divide(vel, dist)
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pos1.y = pos1.y + 3
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return vel
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end
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function tnt:entity_physics(pos, radius, dam)
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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:getpos()
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local obj_vel = obj:getvelocity()
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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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local vel = tnt:calc_velocity(pos, obj_pos,
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obj_vel, radius * 10)
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obj:setvelocity({x=vel.x, y=vel.y, z=vel.z})
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obj:setacceleration({x=-vel.x/5, y=-10, z=-vel.z/5})
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end
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if obj:is_player() == true then
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local emp = minetest.add_entity( obj_pos, 'tnt:pl_ent' )
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obj:set_attach(emp, "", {x = 0, y = 0, z = 0}, {x = 0, y = 0, z = 0})
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local vel = tnt:calc_velocity(pos, obj_pos,
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obj_vel, radius * 10)
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emp:setvelocity({x=vel.x, y=vel.y, z=vel.z})
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emp:setacceleration({x=-vel.x/5, y=-10, z=-vel.z/5})
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end
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if dam == 1 then
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local damage = (4 / dist) * radius
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obj:set_hp(obj:get_hp() - damage)
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end
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end
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end
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function tnt:add_effects(pos, radius)
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minetest.add_particlespawner({
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amount = 128,
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time = 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=-20, y=-20, z=-20},
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maxvel = {x=20, y=20, z=20},
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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 = 3,
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minsize = 8,
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maxsize = 16,
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texture = "tnt_smoke.png",
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})
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end
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function tnt:burn(pos)
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local name = minetest.get_node(pos).name
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if name == "tnt:tnt" then
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minetest.sound_play("tnt_ignite", {pos=pos})
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tnt:lit(pos, name)
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elseif name == "tnt:gunpowder" then
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minetest.sound_play("tnt_gunpowder_burning", {pos=pos, gain=2})
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minetest.set_node(pos, {name="tnt:gunpowder_burning"})
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minetest.get_node_timer(pos):start(1)
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end
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end
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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 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 p = {}
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local c_air = minetest.get_content_id("air")
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local c_tnt = minetest.get_content_id("tnt:tnt")
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local c_tnt_burning = minetest.get_content_id("tnt:tnt_burning")
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local c_gunpowder = minetest.get_content_id("tnt:gunpowder")
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local c_gunpowder_burning = minetest.get_content_id("tnt:gunpowder_burning")
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local c_boom = minetest.get_content_id("tnt:boom")
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local c_fire = minetest.get_content_id("fire:basic_flame")
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-- don't destroy any blocks when in water
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local p0 = {x=pos.x-1, y=pos.y, z=pos.z-1}
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local p1 = {x=pos.x+1, y=pos.y, z=pos.z+1}
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if #minetest.find_nodes_in_area(p0, p1, {"group:water"}) > 0 then
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tnt:entity_physics(pos, radius, 2)
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return {}
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else
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tnt:entity_physics(pos, radius, 1)
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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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local ntnt = 1
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for x = -radius, radius do
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if (x * x) + (y * y) + (z * z) <=
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(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_tnt then
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minetest.after(ntnt+math.random(1,9)/10, function()
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tnt:boom(p)
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end)
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ntnt = ntnt + 1
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end
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if cid == c_gunpowder then
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tnt:burn(p)
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elseif cid ~= c_tnt_burning and
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cid ~= c_gunpowder_burning and
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cid ~= c_air and
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cid ~= c_fire and
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cid ~= c_boom then
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tnt:destroy(drops, p, cid)
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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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return drops
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end
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function tnt:lit( p, n )
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minetest.remove_node( p )
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minetest.add_entity( p, 'tnt:tnt_ent' )
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end
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function tnt:boom(pos)
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minetest.sound_play("tnt_explode", {pos=pos, gain=1.5, max_hear_distance=2*64})
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local drops = tnt:explode(pos, radius)
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tnt:eject_drops(drops, pos, radius)
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tnt:add_effects(pos, radius)
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end
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local function meseboom(pos)
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minetest.remove_node(pos)
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tnt:boom(pos)
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end
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local function lavaboom(pos)
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local name = minetest.get_node(pos).name
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tnt:lit(pos, name)
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end
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minetest.register_node("tnt:tnt", {
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description = "TNT",
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tiles = {"tnt_top.png", "tnt_bottom.png", "tnt_side.png"},
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groups = {dig_immediate=2, mesecon=2},
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sounds = default.node_sound_wood_defaults(),
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on_punch = function(pos, node, puncher)
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if puncher:get_wielded_item():get_name() == "default:torch" then
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minetest.sound_play("tnt_ignite", {pos=pos})
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tnt:lit(pos, node)
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end
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end,
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mesecons = {effector = {action_on = meseboom}},
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})
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minetest.register_node("tnt:gunpowder", {
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description = "Gun Powder",
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drawtype = "raillike",
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paramtype = "light",
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sunlight_propagates = true,
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walkable = false,
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tiles = {"tnt_gunpowder.png",},
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inventory_image = "tnt_gunpowder_inventory.png",
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wield_image = "tnt_gunpowder_inventory.png",
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selection_box = {
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type = "fixed",
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fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
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},
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groups = {dig_immediate=2,attached_node=1},
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sounds = default.node_sound_leaves_defaults(),
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on_punch = function(pos, node, puncher)
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if puncher:get_wielded_item():get_name() == "default:torch" then
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tnt:burn(pos)
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end
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end,
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})
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minetest.register_node("tnt:gunpowder_burning", {
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drawtype = "raillike",
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paramtype = "light",
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sunlight_propagates = true,
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walkable = false,
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light_source = 5,
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tiles = {{
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name = "tnt_gunpowder_burning_animated.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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selection_box = {
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type = "fixed",
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fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
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},
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drop = "",
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groups = {dig_immediate=2,attached_node=1},
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sounds = default.node_sound_leaves_defaults(),
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on_timer = function(pos, elapsed)
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for dx = -1, 1 do
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for dz = -1, 1 do
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for dy = -1, 1 do
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if not (dx == 0 and dz == 0) then
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tnt:burn({
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x = pos.x + dx,
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y = pos.y + dy,
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z = pos.z + dz,
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})
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end
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end
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end
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end
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minetest.remove_node(pos)
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end
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})
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minetest.register_abm({
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nodenames = {"tnt:tnt", "tnt:gunpowder"},
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neighbors = {"fire:basic_flame", "default:lava_source", "default:lava_flowing"},
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interval = 1,
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chance = 1,
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action = lavaboom,
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})
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minetest.register_craft({
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output = "tnt:gunpowder",
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type = "shapeless",
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recipe = {"default:coal_lump", "default:gravel"}
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})
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minetest.register_craft({
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output = "tnt:tnt",
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recipe = {
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{"tnt:gunpowder", "group:sand", "tnt:gunpowder"},
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{"group:sand", "tnt:gunpowder", "group:sand"},
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{"tnt:gunpowder", "group:sand", "tnt:gunpowder"}
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}
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})
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--------------------------------------------------------------------------------
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-- TNT
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--------------------------------------------------------------------------------
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-- A simple TNT mod which damages both terrain and entities.
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-- Barely based on bcmpinc's pull request.
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--
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-- (c)2012 Fernando Zapata (ZLovesPancakes, Franz.ZPT)
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-- Code licensed under GNU GPLv2
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-- http://www.gnu.org/licenses/gpl-2.0.html
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-- Content licensed under CC BY-SA 3.0
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-- http://creativecommons.org/licenses/by-sa/3.0/
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--------------------------------------------------------------------------------
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-------------------------------------------------------------- Entities --------
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tnt.ent_proto = {
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hp_max = 1000,
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physical = true,
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collisionbox = { -1/2, -1/2, -1/2, 1/2, 1/2, 1/2 },
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visual = 'cube',
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textures = { 'tnt_top.png', 'tnt_bottom.png', 'tnt_side.png',
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'tnt_side.png', 'tnt_side.png', 'tnt_side.png' },
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timer = 0,
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btimer = 0,
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bstatus = true,
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physical_state = true,
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on_activate = function( sf, sd )
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sf.object:set_armor_groups( { immortal=1 } )
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sf.object:setvelocity({x=math.random(-40,40)/40, y=4, z=math.random(-40,40)/40})
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sf.object:setacceleration({x=0, y=-10, z=0})
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sf.object:settexturemod('^[brighten')
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end,
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on_step = function( sf, dt )
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sf.timer = sf.timer + dt
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sf.btimer = sf.btimer + dt
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if sf.btimer > 0.5 then
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sf.btimer = sf.btimer - 0.5
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if sf.bstatus then
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sf.object:settexturemod('')
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else
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sf.object:settexturemod('^[brighten')
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end
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sf.bstatus = not sf.bstatus
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end
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if sf.timer > 0.5 then
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local p = sf.object:getpos()
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p.y = p.y - 0.501
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local nn = minetest.get_node(p).name
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if not minetest.registered_nodes[nn] or
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minetest.registered_nodes[nn].walkable then
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sf.object:setvelocity({x=0,y=0,z=0})
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sf.object:setacceleration({x=0, y=0, z=0})
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end
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end
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if sf.timer > 4 then
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local pos = sf.object:getpos()
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local pos2 = {x=math.floor(pos.x+0.5), y=math.floor(pos.y+0.5),
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z=math.floor(pos.z+0.5)}
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tnt:boom(pos2)
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sf.object:remove()
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end
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end,
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}
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minetest.register_entity( 'tnt:tnt_ent', tnt.ent_proto )
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-- invisible object players attach to when TNT detonates
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tnt.pl_proto = {
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hp_max = 1000,
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physical = true,
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collisionbox = { -1/2, -1/2, -1/2, 1/2, 1/2, 1/2 },
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textures = {"throwing_empty.png"},
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timer = 0,
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physical_state = true,
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on_step = function( sf, dt )
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sf.timer = sf.timer + dt
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if sf.timer > 1.5 then
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sf.object:remove()
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end
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end,
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}
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minetest.register_entity( 'tnt:pl_ent', tnt.pl_proto )
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if minetest.setting_get("log_mods") then
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minetest.debug("[TNT] Loaded!")
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end
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