Fixed single frame animation

amethyst_animation/src/systems/sampling.rs

@@ -196,17 +196,16 @@ where
 
         // sampling is running, update duration and check end condition
         Running(duration) => {
-            let zero = Duration::from_secs(0);
             let current_dur =
                 duration + secs_to_duration(time.delta_seconds() * control.rate_multiplier);
             let last_frame = sampler
                 .input
                 .last()
                 .cloned()
                 .map(secs_to_duration)
-                .unwrap_or(zero.clone());
+                .unwrap_or(Duration::from_secs(0));
             // duration is past last frame of sampling
-            if last_frame != zero && current_dur > last_frame {
+            if current_dur > last_frame {
                 // Check end conditions
                 match control.end {
                     // Do loop control

examples/gltf/main.rs

@@ -206,9 +206,6 @@ fn toggle_or_cycle_animation(
                 );
             }
             scene.animation_index += 1;
-            if scene.animation_index == 6 {
-                scene.animation_index = 7;
-            }
             if scene.animation_index >= animations.animations.len() {
                 scene.animation_index = 0;
             }