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#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
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