SceneGraph: restarting animation should allow the same repeat count.

Updated test to check that.

src/SceneGraph/Animable.hpp

@@ -80,10 +80,12 @@ template<std::uint8_t dimensions, class T> void AnimableGroup<dimensions, T>::st
             CORRADE_INTERNAL_ASSERT(animable->previousState == animable->currentState);
             continue;
 
-        /* The animation was started recently, set start time to previous frame time */
+        /* The animation was started recently, set start time to previous frame
+           time, reset repeat count */
         } else if(animable->previousState == AnimationState::Stopped) {
             animable->previousState = AnimationState::Running;
             animable->startTime = time;
+            animable->repeats = 0;
             ++_runningCount;
             animable->animationStarted();
 

src/SceneGraph/Test/AnimableTest.cpp

@@ -266,6 +266,21 @@ void AnimableTest::repeat() {
     group.step(33.0f, 0.5f);
     CORRADE_COMPARE(animable.state(), AnimationState::Stopped);
     CORRADE_COMPARE(animable.time, 4.5f);
+
+    /* Starting the animation again, should be repeatable again */
+    animable.setState(AnimationState::Running);
+
+    /* Three animation repeats */
+    group.step(1.0f, 0.5f);
+    CORRADE_COMPARE(animable.state(), AnimationState::Running);
+    group.step(11.5f, 0.5f);
+    CORRADE_COMPARE(animable.state(), AnimationState::Running);
+    group.step(25.5f, 0.5f);
+    CORRADE_COMPARE(animable.state(), AnimationState::Running);
+
+    /* Should be stopped now */
+    group.step(33.0f, 0.5f);
+    CORRADE_COMPARE(animable.state(), AnimationState::Stopped);
 }
 
 void AnimableTest::stop() {