make negative playRate implicitly play animation backwards

2003-11-14 09:48:01 +00:00 · 2003-11-14 09:48:01 +00:00 · 4d37f8fe6d
parent 77e7c30ab4
commit 4d37f8fe6d
1 changed files with 4 additions and 2 deletions
--- a/direct/src/interval/ActorInterval.py
+++ b/direct/src/interval/ActorInterval.py
@ -89,8 +89,10 @@ class ActorInterval(Interval.Interval):
                    maxFrames = max(maxFrames, numFrames)
                self.endFrame = maxFrames - 1

-        # Must we play the animation backwards?
-        self.reverse = 0
+        # Must we play the animation backwards?  We play backwards if
+        # either (or both) of the following is true: the playRate is
+        # negative, or endFrame is before startFrame.
+        self.reverse = (playRate < 0)
        if self.endFrame < self.startFrame:
            self.reverse = 1
            t = self.endFrame