[GM]attacking system

how can i make an attacking system (using scripts) that is compatible with the 'fox nl platformer'?

As in, you just want a simple hack and slash in game system, like legend of zelda two?

exactly how is that done?

[edit]
hello?
bump

I use damage objects, as in, an object that is invisible, and destroys itself a second or so after creation, and when an enemy collides with it, it does damage, or just kills them.  So it would be something like "press __ key", "create obj_damage", and for an enemy collision, "collision with obj_damage=destroy_instance self".  I could find the actual code for this, as I always just use DnD.