Fixed MD2 animation

Former-commit-id: 3ba7d63f9518c64677e575e13d8a42b459c5151f

include/Nazara/Utility/Animation.hpp

@@ -44,6 +44,8 @@ class NAZARA_API NzAnimation : public NzResource
 		bool CreateSkeletal(unsigned int frameCount, unsigned int jointCount);
 		void Destroy();
 
+		void EnableLoopPointInterpolation(bool loopPointInterpolation);
+
 		unsigned int GetFrameCount() const;
 		unsigned int GetJointCount() const;
 		NzSequence* GetSequence(const NzString& sequenceName);
@@ -59,6 +61,7 @@ class NAZARA_API NzAnimation : public NzResource
 		bool HasSequence(const NzString& sequenceName) const;
 		bool HasSequence(unsigned int index = 0) const;
 
+		bool IsLoopPointInterpolationEnabled() const;
 		bool IsValid() const;
 
 		bool LoadFromFile(const NzString& filePath, const NzAnimationParams& params = NzAnimationParams());

src/Nazara/3D/Model.cpp

@@ -424,8 +424,16 @@ void NzModel::Update(float elapsedTime)
 		unsigned lastFrame = m_currentSequence->firstFrame + m_currentSequence->frameCount - 1;
 		if (m_nextFrame+1 > lastFrame)
 		{
-			m_currentFrame = m_currentSequence->firstFrame;
-			m_nextFrame = m_currentFrame+1;
+			if (m_animation->IsLoopPointInterpolationEnabled())
+			{
+				m_currentFrame = m_nextFrame;
+				m_nextFrame = m_currentSequence->firstFrame;
+			}
+			else
+			{
+				m_currentFrame = m_currentSequence->firstFrame;
+				m_nextFrame = m_currentFrame+1;
+			}
 		}
 		else
 		{

src/Nazara/Utility/Animation.cpp

@@ -16,6 +16,7 @@ struct NzAnimationImpl
 	std::vector<NzSequence> sequences;
 	std::vector<NzSequenceJoint> sequenceJoints; // Uniquement pour les animations squelettiques
 	nzAnimationType type;
+	bool loopPointInterpolation = false;
 	unsigned int frameCount;
 	unsigned int jointCount;  // Uniquement pour les animations squelettiques
 };
@@ -206,6 +207,19 @@ void NzAnimation::Destroy()
 	}
 }
 
+void NzAnimation::EnableLoopPointInterpolation(bool loopPointInterpolation)
+{
+	#if NAZARA_UTILITY_SAFE
+	if (!m_impl)
+	{
+		NazaraError("Animation not created");
+		return;
+	}
+	#endif
+
+	m_impl->loopPointInterpolation = loopPointInterpolation;
+}
+
 unsigned int NzAnimation::GetFrameCount() const
 {
 	#if NAZARA_UTILITY_SAFE
@@ -435,6 +449,19 @@ bool NzAnimation::HasSequence(unsigned int index) const
 	return index >= m_impl->sequences.size();
 }
 
+bool NzAnimation::IsLoopPointInterpolationEnabled() const
+{
+	#if NAZARA_UTILITY_SAFE
+	if (!m_impl)
+	{
+		NazaraError("Animation not created");
+		return false;
+	}
+	#endif
+
+	return m_impl->loopPointInterpolation;
+}
+
 bool NzAnimation::IsValid() const
 {
 	return m_impl != nullptr;

src/Nazara/Utility/Loaders/MD2/Loader.cpp

@@ -266,6 +266,9 @@ namespace
 			return false;
 		}
 
+		// Le MD2 requiert une interpolation de la dernière à la première frame (en cas de loop)
+		animation->EnableLoopPointInterpolation(true);
+
 		// Décodage des séquences
 		///TODO: Optimiser le calcul
 		char last[16];