ds_queue_dequeue(id);
| 参数 | 描述 |
|---|---|
| id | The id of the queue to dequeue from. |
Returns: Real, String, undefined
This function will dequeue the head value off of the
ds_queue, removing it from the queue and returning the value to be
stored in a variable. If the queue is empty then the function will
return the constant undefined, otherwise it will return
the real or string value contained in the queue.
if !ds_queue_empty(move_queue)
{
var xx, yy;
xx = ds_queue_dequeue(move_queue);
yy = ds_queue_dequeue(move_queue);
move_towards_point(xx, yy, 4);
}
The above code checks the ds_queue indexed in the variable "move_queue" to see if it is empty, and if it is not, it then dequeues the two values from the head of the queue and use them to set a direction for movement.