1 files changed, 326 insertions, 0 deletions
diff --git a/Runtime/Dynamics/MeshCollider.cpp b/Runtime/Dynamics/MeshCollider.cpp
new file mode 100644
index 0000000..124d532
--- /dev/null
+++ b/Runtime/Dynamics/MeshCollider.cpp
@@ -0,0 +1,326 @@
+#include "UnityPrefix.h"
+#if ENABLE_PHYSICS
+#include "MeshCollider.h"
+#include "Runtime/Graphics/Transform.h"
+#include "RigidBody.h"
+#include "PhysicsManager.h"
+#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
+#include "Runtime/Filters/AABBUtility.h"
+#include "Runtime/Utilities/Utility.h"
+#include "Runtime/Filters/Mesh/LodMesh.h"
+#include "Runtime/Filters/Mesh/LodMeshFilter.h"
+#include "External/PhysX/builds/SDKs/Physics/include/NxPhysics.h"
+#include "nxmemorystream.h"
+#include "Runtime/BaseClasses/IsPlaying.h"
+#include "External/PhysX/builds/SDKs/Cooking/include/NxCooking.h"
+#include "Runtime/Misc/BuildSettings.h"
+
+#define GET_CONVEX_SHAPE() ((class NxConvexShape*)m_Shape)
+#define GET_MESH_SHAPE() ((class NxTriangleMeshShape*)m_Shape)
+
+#if UNITY_EDITOR
+const NxConvexMesh* MeshCollider::GetConvexMesh() const
+{
+	if( !m_Shape )
+		return NULL;
+	if( !m_Shape->isConvexMesh() )
+		return NULL;
+	const NxConvexMesh& mesh = GET_CONVEX_SHAPE ()->getConvexMesh ();
+	return &mesh;
+}
+const NxTriangleMesh* MeshCollider::GetTriangleMesh() const
+{
+	if( !m_Shape )
+		return NULL;
+	if( m_Shape->isConvexMesh() )
+		return NULL;
+	const NxTriangleMesh& mesh = GET_MESH_SHAPE ()->getTriangleMesh ();
+	return &mesh;
+}
+#endif
+
+MeshCollider::MeshCollider (MemLabelId label, ObjectCreationMode mode)
+:	Super(label, mode)
+,	m_MeshNode(this)
+{
+	m_Shared = false;
+}
+
+MeshCollider::~MeshCollider ()
+{
+}
+
+void MeshCollider::AwakeFromLoad(AwakeFromLoadMode awakeMode)
+{
+	if (m_Shape)
+	{
+		// Apply changed values
+		if (m_Convex != (m_Shape->isConvexMesh() != NULL))
+			SetConvex(m_Convex);
+			
+		if (m_Shape)
+		{
+			bool smooth;
+			if (m_Shape->isConvexMesh())
+			{
+				NxConvexShapeDesc desc;
+				GET_CONVEX_SHAPE ()->saveToDesc(desc);
+				smooth = desc.meshFlags & NX_MESH_SMOOTH_SPHERE_COLLISIONS;
+			}
+			else
+			{
+				NxTriangleMeshShapeDesc desc;
+				GET_MESH_SHAPE ()->saveToDesc(desc);
+				smooth = desc.meshFlags & NX_MESH_SMOOTH_SPHERE_COLLISIONS;
+			}
+			if (smooth != m_SmoothSphereCollisions)
+				SetSmoothSphereCollisions(m_SmoothSphereCollisions);
+			SetSharedMesh(m_Mesh);
+		}
+	}
+	
+	Super::AwakeFromLoad (awakeMode);
+}	
+
+void MeshCollider::Cleanup ()
+{
+	m_MeshNode.RemoveFromList();
+	if (m_Shape)
+	{
+		if (m_Shape->isConvexMesh())
+		{
+			NxConvexMesh& mesh = GET_CONVEX_SHAPE ()->getConvexMesh ();
+			Super::Cleanup ();
+			if (!m_Shared)
+				GetDynamicsSDK ().releaseConvexMesh (mesh);
+		}
+		else
+		{
+			NxTriangleMesh& mesh = GET_MESH_SHAPE ()->getTriangleMesh ();
+			Super::Cleanup ();
+			if (!m_Shared)
+				GetDynamicsSDK ().releaseTriangleMesh (mesh);
+		}
+	}
+}
+
+void MeshCollider::DidDeleteMesh ()
+{
+	Cleanup ();
+}
+
+void MeshCollider::CreateShape( void* nxmesh, const Rigidbody* ignoreRigidbody )
+{
+	if ( !nxmesh )
+		return;
+	
+	if (m_Convex)
+	{
+		NxConvexShapeDesc shapeDesc;
+		shapeDesc.meshData = (NxConvexMesh*)nxmesh;
+		
+		if (m_SmoothSphereCollisions)
+			shapeDesc.meshFlags |= NX_MESH_SMOOTH_SPHERE_COLLISIONS;
+		
+		FinalizeCreate (shapeDesc, true, ignoreRigidbody);
+	}
+	else
+	{
+		NxTriangleMeshShapeDesc shapeDesc;
+		
+		if (m_SmoothSphereCollisions)
+			shapeDesc.meshFlags |= NX_MESH_SMOOTH_SPHERE_COLLISIONS;
+		
+		shapeDesc.meshData = (NxTriangleMesh*)nxmesh;
+		
+		FinalizeCreate (shapeDesc, true, ignoreRigidbody);
+	}
+}
+
+//@TODO: Updating physics mesh when reimporting no longer works!
+
+void MeshCollider::Create (const Rigidbody* ignoreRigidbody)
+{
+	if (m_Shape)
+		Cleanup ();
+
+	Mesh* mesh = m_Mesh;
+	m_CachedMesh = mesh;
+	if (mesh == NULL)
+		return;
+	// do not create anything if have no vertices or less-than-one triangle
+	if (mesh->GetVertexCount() == 0 || mesh->GetPrimitiveCount() == 0)
+		return;
+
+	/*
+	NxCookingParams params;
+	params.hintCollisionSpeed = true;
+	NxSetCookingParams (params);
+	*/
+
+	Matrix4x4f scalematrix;
+
+	TransformType type = GetComponent (Transform).CalculateTransformMatrixScaleDelta (scalematrix);
+
+	void* nxmesh = NULL;
+	if (IsNoScaleTransform(type) && !mesh->IsSharedPhysicsMeshDirty()) 
+	{
+		m_Shared = true;
+		
+		if (m_Convex)
+		{
+			nxmesh = mesh->GetSharedNxConvexMesh ();
+		}
+		else
+		{
+			nxmesh = mesh->GetSharedNxMesh ();
+		}
+	}
+	// For scaled meshes, create instance
+	else
+	{
+		m_Shared = false;
+		nxmesh = CreateNxMeshFromUnityMesh(mesh, m_Convex, scalematrix, type);
+	}
+	
+	if (nxmesh == NULL)	
+		return;
+	
+	mesh->AddObjectUser( m_MeshNode );
+		
+	CreateShape( nxmesh, ignoreRigidbody );
+}
+
+void MeshCollider::ReCreate()
+{
+	if( !m_Shape )
+		return;
+	// Re-creating the full mesh collider is expensive, so we only re-create the shape and not the mesh.
+	if ( m_Shape->isConvexMesh() )
+	{
+		NxConvexMesh& mesh = GET_CONVEX_SHAPE ()->getConvexMesh ();
+		Super::Cleanup();
+		CreateShape( &mesh, NULL );
+	}
+	else
+	{
+		NxTriangleMesh& mesh = GET_MESH_SHAPE ()->getTriangleMesh ();
+		Super::Cleanup();
+		CreateShape( &mesh, NULL );
+	}
+}
+
+void MeshCollider::ScaleChanged ()
+{
+	Create (NULL);
+}
+
+void MeshCollider::TransformChanged (int changeMask)
+{	
+	Super::TransformChanged (changeMask);
+	if (m_Shape)
+	{
+		if (m_Shape->getActor ().userData == NULL)
+		{
+			PROFILER_AUTO(gStaticColliderMove, this)
+			FetchPoseFromTransform ();
+		}
+		else
+		{
+			Rigidbody* body = (Rigidbody*)m_Shape->getActor ().userData;
+			Matrix4x4f matrix;
+			if (GetRelativeToParentPositionAndRotation (GetComponent (Transform), body->GetComponent (Transform), matrix))
+			{
+				NxMat34 shapeMatrix;
+				shapeMatrix.setColumnMajor44 (matrix.GetPtr ());
+				m_Shape->setLocalPose (shapeMatrix);
+			}
+
+			if (body->GetGameObjectPtr() != GetGameObjectPtr() || changeMask & Transform::kScaleChanged)
+				RigidbodyMassDistributionChanged ();
+		}
+				
+		if (changeMask & Transform::kScaleChanged)
+			ScaleChanged ();
+
+		RefreshPhysicsInEditMode();
+	}
+	else if (IS_CONTENT_NEWER_OR_SAME(kUnityVersion4_0_a1) && IsActive() && GetEnabled())
+		Create (NULL);		
+}
+
+void MeshCollider::InitializeClass ()
+{
+	REGISTER_MESSAGE_VOID(MeshCollider, kDidDeleteMesh, DidDeleteMesh);
+}
+
+void MeshCollider::SetSharedMesh (const PPtr<Mesh> m)
+{
+	if (m_CachedMesh != m)
+	{
+		SetDirty ();
+		m_Mesh = m;
+		if (IsActive())
+			Create(NULL);
+	}
+}
+
+PPtr<Mesh> MeshCollider::GetSharedMesh ()
+{
+	return m_Mesh;
+}
+
+void MeshCollider::Reset ()
+{
+	Super::Reset ();
+	if (GetGameObjectPtr ())
+	{
+		MeshFilter* filter = QueryComponent (MeshFilter);
+		if (filter && m_Mesh.GetInstanceID () == 0)
+		{
+			PPtr<Mesh> newMesh = filter->GetSharedMesh ();
+			if (newMesh != m_Mesh)
+			{
+				m_Mesh = newMesh;
+				if (IsActive())
+					Create(NULL);
+			}
+		}
+	}
+	m_SmoothSphereCollisions = false;
+	m_Convex = false;
+}
+
+template<class TransferFunction>
+void MeshCollider::Transfer (TransferFunction& transfer) 
+{
+	Super::Transfer (transfer);
+	transfer.SetVersion (2);
+	
+	TRANSFER (m_SmoothSphereCollisions);
+	transfer.Transfer (m_Convex, "m_Convex");
+	transfer.Align();
+	TRANSFER (m_Mesh);
+}
+
+void MeshCollider::SetConvex (bool convex)
+{
+	m_Convex = convex;
+	if (m_Shape)
+		Create(NULL);
+	SetDirty();
+	RefreshPhysicsInEditMode();
+}
+
+void MeshCollider::SetSmoothSphereCollisions (bool smooth)
+{
+	m_SmoothSphereCollisions = smooth;
+	if (m_Shape)
+		Create(NULL);
+	SetDirty();
+	RefreshPhysicsInEditMode();
+}
+
+IMPLEMENT_CLASS_HAS_INIT (MeshCollider)
+IMPLEMENT_OBJECT_SERIALIZE (MeshCollider)
+#endif //ENABLE_PHYSICS