add loop option to playAnimation

ios/src/FilamentViewer.cpp

@@ -594,7 +594,7 @@ namespace polyvox
   {
     if (!_view || !_mainCamera || !_swapChain)
     {
-      Log("Not ready for rendering");
+      // Log("Not ready for rendering");
       return;
     }
 
@@ -668,8 +668,12 @@ namespace polyvox
     }
   }
 
-  void FilamentViewer::playAnimation(int index) {
+  void FilamentViewer::playAnimation(int index, bool loop) {
-    embeddedAnimationBuffer = make_unique<EmbeddedAnimationBuffer>(index, _animator->getAnimationDuration(index));
+    if(index > _animator->getAnimationCount() - 1) {
+      Log("Asset does not contain an animation at index %d", index);
+    } else {
+      embeddedAnimationBuffer = make_unique<EmbeddedAnimationBuffer>(index, _animator->getAnimationDuration(index), loop);
+    }
   }
 
   void FilamentViewer::updateEmbeddedAnimation() {
@@ -679,8 +683,12 @@ namespace polyvox
       embeddedAnimationBuffer->hasStarted = true;
       embeddedAnimationBuffer->lastTime = std::chrono::high_resolution_clock::now();
     } else if(dur.count() >= embeddedAnimationBuffer->duration) {
-      embeddedAnimationBuffer = nullptr;
+      if(embeddedAnimationBuffer->loop) {
-      return;
+        embeddedAnimationBuffer->lastTime = std::chrono::high_resolution_clock::now();
+      } else {
+        embeddedAnimationBuffer = nullptr;
+        return;
+      }
     } else {
       startTime = dur.count();
     }

ios/src/FilamentViewer.hpp

@@ -55,11 +55,12 @@ namespace polyvox {
     };
 
     struct EmbeddedAnimationBuffer  {        
-      EmbeddedAnimationBuffer(int animationIndex, float duration) : animationIndex(animationIndex), duration(duration) {}
+      EmbeddedAnimationBuffer(int animationIndex, float duration, bool loop) : animationIndex(animationIndex), duration(duration), loop(loop) {}
       bool hasStarted = false;
       int animationIndex;
       float duration = 0;
       time_point_t lastTime;
+      bool loop;
     };
 
     
@@ -117,7 +118,7 @@ namespace polyvox {
             void applyWeights(float* weights, int count);
             void animateWeights(float* data, int numWeights, int length, float frameRate);
             // void animateBones();
-            void playAnimation(int index);
+            void playAnimation(int index, bool loop);
             bool setCamera(const char* nodeName);
             void destroySwapChain();
             void createSwapChain(void* surface);