Attached is a small excerpt from my spfunc_fairy program, showing the use of touch. The out part of the touch command lets it store output into the variables you pass in. STTM is the part you care about at the moment. If the screen was touched it has a time code, but if not it is zero. TX, and TY are where the screen was touched. So call touch out sttm, tx, ty then if sttm != 0 then start the game