Fixed most input validation bugs, and did too many improvements to remember. Did I mention that I am typing these words with my hands?

gameutil.py

@@ -46,6 +46,8 @@ def parseCoords(level, args, usePlayerCoords = True, player = None):
 Returns (thing, x, y). "Thing" can be None."""
     if level == None:
         raise ValueError('Coordinates cannot be parsed because there is no map.')
+    if len(args) == 0:
+        return None, -1, -1
     x = -1
     y = -1