Replace Kiss3d by Bevy for the testbed renderer.

examples2d/platform2.rs

@@ -60,7 +60,7 @@ pub fn init_world(testbed: &mut Testbed) {
     /*
      * Setup a callback to control the platform.
      */
-    testbed.add_callback(move |_, _, physics, _, run_state| {
+    testbed.add_callback(move |_, physics, _, run_state| {
         let platform = physics.bodies.get_mut(platform_handle).unwrap();
         let mut next_pos = *platform.position();
 
@@ -84,8 +84,3 @@ pub fn init_world(testbed: &mut Testbed) {
     testbed.set_world(bodies, colliders, joints);
     testbed.look_at(Point2::new(0.0, 1.0), 40.0);
 }
-
-fn main() {
-    let testbed = Testbed::from_builders(0, vec![("Kinematic body", init_world)]);
-    testbed.run()
-}