为什么clutter_actor_animate影响错误的演员？

Question

I've been playing around with Clutter, using this tutorial as reference, and am trying to animate three groups, each containing a colored rectangle. I am trying to use the clutter_actor_animate method used in the tutorial. If I animate just one of the three, it works; however, if I try to animate two or more groups, the first animation seems to apply to all animations. Why is this? Here is the relevant part of my code:

clutter_actor_animate (group_red, CLUTTER_EASE_OUT_SINE, 500, "x", 0-width, "y", 0, NULL);
clutter_actor_animate (group_green, CLUTTER_EASE_OUT_SINE, 500, "x", 0, "y", 0, NULL);
clutter_actor_animate (group_yellow, CLUTTER_EASE_OUT_SINE, 500, "x", width, "y", 0, NULL);

Where width is a gfloat containing the value 200 .

Answer 1

I learned the answer: clutter_actor_animate requires floats for those values, so I needed to put 0.0 instead of 0 . The correct version is:

clutter_actor_animate (group_red, CLUTTER_EASE_OUT_SINE, 500, "x", 0.0-width, "y", 0.0, NULL);
clutter_actor_animate (group_green, CLUTTER_EASE_OUT_SINE, 500, "x", 0.0, "y", 0.0, NULL);
clutter_actor_animate (group_yellow, CLUTTER_EASE_OUT_SINE, 500, "x", width, "y", 0.0, NULL);