Punch Glitch

Punch glitch is a bug that is exclusively encountered on the PlayStation 3 Jak and Daxter Collection.

Technical

<nowiki>

(defun acos ((arg0 float))

 "Inverse cosine. Returns rotation units"
 (let ((result (- 16384.000000 (asin arg0))))
   (#when PC_PORT
     ;; to avoid punch glitch:
     ;; (note: it might be a better fix to change the global rounding mode,
     ;;  but it's not super clear to me that the mode picked by PCSX2 is
     ;;  more accurate than normal in all cases. So, we'll do this for now.)
     (when (= result 0.0)
       (set! result 0.00000000001)
       )
     )
   result
   )
 )<nowiki>