layer_destroy_instances

This function can be used to destroy all the instances assigned to the given layer. You supply the layer ID (which you get when you create the layer using layer_create()) or the layer name (as a string - this will have a performance impact), and then all instances that are on the layer will be removed from the game, triggering their Destroy and Clean Up events.

Syntax:

layer_destroy_instances(layer_id)

Returns:

N/A

Example:

if (global.game_over)
{
    layer_destroy_instances(layer);
}

The above code will check a global variable and if it's true then all instances that are on the layer of the calling instance will be destroyed (including the calling instance).