position_meeting(x, y, obj);
|x||The x position to check.|
|y||The y position to check.|
|obj||The object (or instance id, or the keywords "all" or "other") to check for a collision with.|
With this function you can check a position for a collision with
another instance or all instances of an object. When you use this
you are checking a single point in the room for an instance or an
object. This check will be done against the bounding box of the
instance or against the mask of the instance if that instance has
precise collisions checked. If you need to know get the unique
instance id if the object being collided with you should use
instance_position. This function also accepts the
special keywords all and other.
if !position_meeting(mouse_x, mouse_y, all) instance_create(mouse_x, mouse_y, obj_Wall);
The above code checks for the left mouse button, and if it is pressed it checks the mouse x/y position for a collision with any instance. If there is none, then an instance of "obj_Wall" is created.