JoltPhysics3D: Skip the rigid body update if no physics step took place

This improves the framerate if FPS > physics rate

include/Nazara/JoltPhysics3D/JoltPhysWorld3D.hpp

@@ -59,15 +59,15 @@ namespace Nz
 
 			void RefreshBodies();
 
-			inline void RegisterStepListener(JoltPhysicsStepListener* character);
+			inline void RegisterStepListener(JoltPhysicsStepListener* stepListener);
 
 			void SetGravity(const Vector3f& gravity);
 			void SetMaxStepCount(std::size_t maxStepCount);
 			void SetStepSize(Time stepSize);
 
-			void Step(Time timestep);
+			bool Step(Time timestep);
 
-			inline void UnregisterStepListener(JoltPhysicsStepListener* character);
+			inline void UnregisterStepListener(JoltPhysicsStepListener* stepListener);
 
 			JoltPhysWorld3D& operator=(const JoltPhysWorld3D&) = delete;
 			JoltPhysWorld3D& operator=(JoltPhysWorld3D&&) = delete;

src/Nazara/JoltPhysics3D/JoltPhysWorld3D.cpp

@@ -456,15 +456,17 @@ namespace Nz
 		m_stepSize = stepSize;
 	}
 
-	void JoltPhysWorld3D::Step(Time timestep)
+	bool JoltPhysWorld3D::Step(Time timestep)
 	{
+		m_timestepAccumulator += timestep;
+		if (m_timestepAccumulator < m_stepSize)
+			return false;
+
 		RefreshBodies();
 
 		JPH::JobSystem& jobSystem = JoltPhysics3D::Instance()->GetThreadPool();
 		float stepSize = m_stepSize.AsSeconds<float>();
 
-		m_timestepAccumulator += timestep;
-
 		std::size_t stepCount = 0;
 		while (m_timestepAccumulator >= m_stepSize && stepCount < m_maxStepCount)
 		{
@@ -476,6 +478,8 @@ namespace Nz
 			m_timestepAccumulator -= m_stepSize;
 			stepCount++;
 		}
+
+		return true;
 	}
 
 	void JoltPhysWorld3D::RegisterBody(const JPH::BodyID& bodyID, bool activate, bool removeFromDeactivationList)

src/Nazara/JoltPhysics3D/Systems/JoltPhysics3DSystem.cpp

@@ -90,7 +90,8 @@ namespace Nz
 		});
 
 		// Update the physics world
-		m_physWorld.Step(elapsedTime);
+		if (!m_physWorld.Step(elapsedTime))
+			return; // No physics step took place
 
 		// Replicate characters to their NodeComponent
 		{