Fix pew.tick() to not accumulate error over time

deshipu · deshipu · commit 8e50aeb06f24 · 2019-03-01T15:54:16.000+01:00
diff --git a/frozen/pewpew10/pew.py b/frozen/pewpew10/pew.py
@@ -63,8 +63,12 @@ def show(pix):
 def tick(delay):
     global _tick
 
+    now = time.monotonic()
     _tick += delay
-    time.sleep(max(0, _tick - time.monotonic()))
+    if _tick < now:
+        _tick = now
+    else:
+        time.sleep(_tick - now)
 
 
 class GameOver(Exception):
