Optimize flushing active transform of physically simulated actors

Source/Editor/Scripting/ScriptsBuilder.cpp

@@ -22,6 +22,7 @@
 #include "Engine/Scripting/Scripting.h"
 #include "Engine/Scripting/Script.h"
 #include "Engine/Engine/EngineService.h"
+#include "Engine/Profiler/ProfilerCPU.h"
 #include "Engine/Level/Level.h"
 #include "FlaxEngine.Gen.h"
 
@@ -212,6 +213,7 @@ void ScriptsBuilder::Compile()
 
 bool ScriptsBuilder::RunBuildTool(const StringView& args)
 {
+    PROFILE_CPU();
     const String buildToolPath = Globals::StartupFolder / TEXT("Binaries/Tools/Flax.Build.exe");
     if (!FileSystem::FileExists(buildToolPath))
     {
@@ -269,6 +271,7 @@ void ScriptsBuilderImpl::GetClassName(const MString& fullname, MString& classNam
 
 MClass* ScriptsBuilder::FindScript(const StringView& scriptName)
 {
+    PROFILE_CPU();
     const MString scriptNameStd = scriptName.ToStringAnsi();
 
     const ScriptingTypeHandle scriptingType = Scripting::FindScriptingType(scriptNameStd);

Source/Engine/Physics/Colliders/CharacterController.cpp

@@ -409,7 +409,9 @@ void CharacterController::OnTransformChanged()
         const PxExtendedVec3 pos(_transform.Translation.X, _transform.Translation.Y, _transform.Translation.Z);
         _controller->setPosition(pos);
 
-        UpdateScale();
+        const Vector3 scale = GetScale();
+        if (!Vector3::NearEqual(_cachedScale, scale))
+            UpdateGeometry();
         UpdateBounds();
     }
     else if (!_controller)

Source/Engine/Physics/Colliders/Collider.cpp

@@ -233,21 +233,13 @@ void Collider::Attach(RigidBody* rigidBody)
 
     // Attach
     rigidBody->GetPhysXRigidActor()->attachShape(*_shape);
-    _shape->setLocalPose(PxTransform(C2P((_localTransform.Translation + _localTransform.Orientation * _center) * rigidBody->GetScale()), C2P(_localTransform.Orientation)));
+    _cachedLocalPosePos = (_localTransform.Translation + _localTransform.Orientation * _center) * rigidBody->GetScale();
+    _cachedLocalPoseRot = _localTransform.Orientation;
+    _shape->setLocalPose(PxTransform(C2P(_cachedLocalPosePos), C2P(_cachedLocalPoseRot)));
     if (rigidBody->IsDuringPlay())
         rigidBody->UpdateBounds();
 }
 
-void Collider::UpdateScale()
-{
-    const Vector3 scale = GetScale();
-    if (Vector3::NearEqual(_cachedScale, scale))
-        return;
-
-    // Recreate shape geometry
-    UpdateGeometry();
-}
-
 void Collider::UpdateLayerBits()
 {
     ASSERT(_shape);
@@ -519,10 +511,18 @@ void Collider::OnTransformChanged()
     }
     else if (const RigidBody* rigidBody = GetAttachedRigidBody())
     {
-        _shape->setLocalPose(PxTransform(C2P((_localTransform.Translation + _localTransform.Orientation * _center) * rigidBody->GetScale()), C2P(_localTransform.Orientation)));
+        const Vector3 localPosePos = (_localTransform.Translation + _localTransform.Orientation * _center) * rigidBody->GetScale();
+        if (_cachedLocalPosePos != localPosePos || _cachedLocalPoseRot != _localTransform.Orientation)
+        {
+            _cachedLocalPosePos = localPosePos;
+            _cachedLocalPoseRot = _localTransform.Orientation;
+            _shape->setLocalPose(PxTransform(C2P(localPosePos), C2P(_cachedLocalPoseRot)));
+        }
     }
 
-    UpdateScale();
+    const Vector3 scale = GetScale();
+    if (!Vector3::NearEqual(_cachedScale, scale))
+        UpdateGeometry();
     UpdateBounds();
 }
 

Source/Engine/Physics/Colliders/Collider.h

@@ -26,6 +26,8 @@ protected:
     PxRigidStatic* _staticActor;
     Vector3 _cachedScale;
     float _contactOffset;
+    Vector3 _cachedLocalPosePos;
+    Quaternion _cachedLocalPoseRot;
 
 public:
 
@@ -166,11 +168,6 @@ public:
 
 protected:
 
-    /// <summary>
-    /// Updates the shape scale (may be modified when actor transformation changes).
-    /// </summary>
-    void UpdateScale();
-
     /// <summary>
     /// Updates the shape actor collisions/queries layer mask bits.
     /// </summary>