1 files changed, 42 insertions, 0 deletions
diff --git a/Runtime/Dynamics/PhysXRaycast.h b/Runtime/Dynamics/PhysXRaycast.h
new file mode 100644
index 0000000..298f051
--- /dev/null
+++ b/Runtime/Dynamics/PhysXRaycast.h
@@ -0,0 +1,42 @@
+#ifndef PHYSXRAYCAST_H
+#define PHYSXRAYCAST_H
+
+#include "UnityPrefix.h"
+#if ENABLE_MULTITHREADED_CODE
+#include "Runtime/Threads/SimpleLock.h"
+#endif
+#include "Runtime/Interfaces/IRaycast.h"
+#include "Runtime/Geometry/AABB.h"
+
+class Plane;
+class NxShape;
+
+/// PhysX thread safety:
+/// Unfortunately scene query + concurrent writes to the SDK are not thread safe. However, concurrent reads such as scene queries from multiple threads should be safe.
+/// But simulate calls count as writes, so is not OK at the same time.
+class PhysXRaycast : public IRaycast
+{
+public:	
+	static void InitializeClass ();
+	static void CleanupClass ();
+
+	// virtual interface implementation	
+	virtual size_t BatchIntersect( const dynamic_array<BatchedRaycast>& raycasts, dynamic_array<BatchedRaycastResult>& results, const UInt32 filter, bool staticOnly ) const;
+	virtual bool Raycast (const Ray& ray, float distance, int mask, HitInfo& hit);
+
+	PhysXRaycast() {}
+	~PhysXRaycast() {}
+
+private:
+	// helper functions for working with the NxShapes
+	bool Intersect( const Ray& ray, float maxDist, NxShape** shapes, AABB* shapeBounds, size_t shapeCount, HitInfo& hit ) const;
+	size_t GetShapes( const AABB& bounds, int maxResult, NxShape** outShapes, UInt32 groupMask = 0xffffffff, bool staticOnly = false ) const;
+	void GetAABB( AABB& bounds, const NxShape& shape ) const;
+	size_t BroadPhaseCulling(dynamic_array<NxShape*>& nxShapes, dynamic_array<AABB>& aabbs, const MinMaxAABB& particleSystemAABB, const int filter, bool staticOnly) const;
+
+#if ENABLE_MULTITHREADED_CODE
+	mutable SimpleLock m_Lock;
+#endif
+};
+
+#endif