feat: add moving platform support + fix jolt

destrum/src/Physics/JoltPhysicsWorld.cpp

@@ -548,7 +548,7 @@ public:
         return events;
     }
 
-    void SyncKinematicBodiesToPhysics()
+    void SyncKinematicBodiesToPhysics(float fixedDt)
     {
         BodyInterface& bodyInterface = m_PhysicsSystem.GetBodyInterface();
 
@@ -562,11 +562,11 @@ public:
 
             Transform& transform = record.desc.owner->GetTransform();
 
-            bodyInterface.SetPositionAndRotation(
+            bodyInterface.MoveKinematic(
                 record.bodyID,
                 ToJoltRVec3(transform.GetWorldPosition()),
                 ToJoltQuat(transform.GetWorldRotation()),
-                EActivation::Activate);
+                fixedDt);
         }
     }
 
@@ -819,9 +819,9 @@ void JoltPhysicsWorld::Step(float fixedDt)
     m_Impl->Step(fixedDt);
 }
 
-void JoltPhysicsWorld::SyncKinematicBodiesToPhysics()
+void JoltPhysicsWorld::SyncKinematicBodiesToPhysics(float fixedDt)
 {
-    m_Impl->SyncKinematicBodiesToPhysics();
+    m_Impl->SyncKinematicBodiesToPhysics(fixedDt);
 }
 
 void JoltPhysicsWorld::SyncDynamicBodiesToTransforms()

destrum/src/Physics/PhysicsSceneBridge.cpp

@@ -35,7 +35,7 @@ void PhysicsSceneBridge::RefreshGameObject(GameObject& object) {
 
 void PhysicsSceneBridge::FixedUpdate(float fixedDt) {
     if (!m_World) return;
-    m_World->SyncKinematicBodiesToPhysics();
+    m_World->SyncKinematicBodiesToPhysics(fixedDt);
     m_World->Step(fixedDt);
 
     for (const auto& event : m_World->ConsumeTriggerEvents()) {

destrum/src/Physics/PhysicsWorld.cpp

@@ -115,7 +115,7 @@ void PhysicsWorld::UnregisterRigidbody(Rigidbody& rigidbody) {
     rigidbody.DetachPhysicsBody();
 }
 
-void PhysicsWorld::SyncKinematicBodiesToPhysics() {
+void PhysicsWorld::SyncKinematicBodiesToPhysics(float) {
     // Backend-independent sync is intentionally not possible here because
     // PhysicsWorld does not own the list of active rigidbodies.
 }

destrum/src/Physics/SimplePhysicsWorld.cpp

@@ -134,7 +134,7 @@ void SimplePhysicsWorld::Step(float fixedDt) {
         m_Bodies.end());
 }
 
-void SimplePhysicsWorld::SyncKinematicBodiesToPhysics() {
+void SimplePhysicsWorld::SyncKinematicBodiesToPhysics(float fixedDt) {
     for (BodyRecord& body : m_Bodies) {
         if (!body.alive || body.desc.type != RigidbodyType::Kinematic || !body.desc.owner ||
             body.desc.owner->IsBeingDestroyed() || !body.desc.owner->IsActiveInHierarchy()) {
@@ -146,6 +146,9 @@ void SimplePhysicsWorld::SyncKinematicBodiesToPhysics() {
         body.previousTransform = body.currentTransform;
         body.currentTransform.position = transform.GetWorldPosition();
         body.currentTransform.rotation = transform.GetWorldRotation();
+        body.linearVelocity = fixedDt > 0.0f
+            ? (body.currentTransform.position - body.previousTransform.position) / fixedDt
+            : glm::vec3{0.0f};
     }
 }