Debris

Mostrar obsoleto
No creable
Servicio

The Debris service allows scheduling guaranteed destruction of an object without yielding.

Advantages

Besides creating a bit of a mess, objects that are no longer required can use up system memory and cause an experience to run slower over time. For this reason, it's always advised to call Instance:Destroy() on objects you no longer need. In some cases, however, an object may have a specific period of utility before it can be destroyed.

Consider a wall being smashed into individual bricks. If you want a brick to linger for 3 seconds before being destroyed, you can use the following code:


task.wait(3)
brick:Destroy()

However, waiting causes the thread to yield which may be undesired. To avoid yielding, a callback function can be scheduled to run on a new thread after 3 seconds:


task.delay(3, function()
brick:Destroy()
end)

Or in one line:


task.delay(3, brick.Destroy, brick)

While this now avoids yielding, it has a potential drawback in that the scheduled callback will never run if the script is disabled or destroyed before the callback runs.

This is where Debris has a specific advantage, as it does not yield the current thread and runs outside the context of the script, guaranteeing the instance is eventually destroyed even if the script is disabled or destroyed. The following code does not yield and guarantees the instance will be destroyed:


Debris:AddItem(brick, 3)

Note that Debris has a hardcoded maximum of 1,000 objects, so if more than 1,000 items are added, the oldest debris will be destroyed instantly to make room for new debris.

Muestras de código

Debris AddItem

local Debris = game:GetService("Debris")
local ball = Instance.new("Part")
ball.Anchored = false
ball.Shape = Enum.PartType.Ball
ball.TopSurface = Enum.SurfaceType.Smooth
ball.BottomSurface = Enum.SurfaceType.Smooth
ball.Size = Vector3.new(1, 1, 1)
local RNG = Random.new()
local MAX_VELOCITY = 10
while true do
local newBall = ball:Clone()
newBall.BrickColor = BrickColor.random()
newBall.CFrame = CFrame.new(0, 30, 0)
newBall.Velocity = Vector3.new(
RNG:NextNumber(-MAX_VELOCITY, MAX_VELOCITY),
0,
RNG:NextNumber(-MAX_VELOCITY, MAX_VELOCITY)
)
newBall.Parent = game.Workspace
Debris:AddItem(newBall, 2)
task.wait(0.1)
end

Resumen

Métodos

Propiedades

Métodos

AddItem

void

Schedules a given Instance for destruction within the specified lifetime. After the lifetime argument has elapsed, the object is destroyed in the same manner as Instance:Destroy(). Note that the lifetime argument is optional and defaults to 10 seconds.

Note that Debris has a hardcoded maximum of 1,000 objects, so if more than 1,000 items are added, the oldest debris will be destroyed instantly to make room for new debris. This means you should treat the lifetime parameter as a maximum lifetime, not an exact lifetime.

Parámetros

item: Instance

The Instance to add to Debris.

lifetime: number

Number of seconds before the Instance should be destroyed.

Valor predeterminado: 10

Devuelve

void

Muestras de código

Debris AddItem

local Debris = game:GetService("Debris")
local ball = Instance.new("Part")
ball.Anchored = false
ball.Shape = Enum.PartType.Ball
ball.TopSurface = Enum.SurfaceType.Smooth
ball.BottomSurface = Enum.SurfaceType.Smooth
ball.Size = Vector3.new(1, 1, 1)
local RNG = Random.new()
local MAX_VELOCITY = 10
while true do
local newBall = ball:Clone()
newBall.BrickColor = BrickColor.random()
newBall.CFrame = CFrame.new(0, 30, 0)
newBall.Velocity = Vector3.new(
RNG:NextNumber(-MAX_VELOCITY, MAX_VELOCITY),
0,
RNG:NextNumber(-MAX_VELOCITY, MAX_VELOCITY)
)
newBall.Parent = game.Workspace
Debris:AddItem(newBall, 2)
task.wait(0.1)
end

Eventos