+Unity Runtime codeHEADmaster

1 files changed, 123 insertions, 0 deletions

diff --git a/Runtime/Physics2D/CollisionListener2D.h b/Runtime/Physics2D/CollisionListener2D.h
new file mode 100644
index 0000000..f87cecb
--- /dev/null
+++ b/Runtime/Physics2D/CollisionListener2D.h
@@ -0,0 +1,123 @@
+#pragma once
+
+#if ENABLE_2D_PHYSICS || DOXYGEN
+
+#include "Runtime/Utilities/dynamic_array.h"
+#include "Runtime/Scripting/Backend/ScriptingTypes.h"
+#include "Runtime/Utilities/dense_hash_map.h"
+#include "Runtime/Physics2D/Collider2D.h"
+#include "Box2D/Box2D.h"
+#include <list>
+
+class Rigidbody2D;
+class b2Contact;
+
+
+// --------------------------------------------------------------------------
+
+
+struct Collision2D
+{
+	Collision2D() :
+		m_Rigidbody(NULL),
+		m_OtherRigidbody(NULL),
+		m_Collider(NULL),
+		m_OtherCollider(NULL),
+		m_ContactMode(ContactInvalid),
+		m_Flipped(false),
+		m_TriggerCollision(false),
+		m_ContactCount(0),
+		m_ContactReferences(0) {}
+
+	Rigidbody2D* m_Rigidbody;
+	Rigidbody2D* m_OtherRigidbody;
+	Collider2D* m_Collider;
+	Collider2D* m_OtherCollider;
+
+	UInt32 m_ContactCount;
+	UInt32 m_ContactReferences;
+	b2WorldManifold m_ContactManifold;
+	Vector2f m_RelativeVelocity;
+
+	enum ContactMode
+	{
+		ContactInvalid,
+		ContactAdded,
+		ContactRemoved,
+		ContactStay
+	};
+
+	ContactMode m_ContactMode;
+	bool m_Flipped;
+	bool m_TriggerCollision;
+};
+
+
+// --------------------------------------------------------------------------
+
+#if ENABLE_SCRIPTING
+struct ScriptingContactPoint2D
+{
+	Vector2f point;
+	Vector2f normal;
+	ScriptingObjectPtr collider;
+	ScriptingObjectPtr otherCollider;
+};
+
+struct ScriptingCollision2D
+{
+	ScriptingObjectPtr rigidbody;
+	ScriptingObjectPtr collider;
+	ScriptingArrayPtr contacts;
+	Vector2f relativeVelocity;
+};
+
+ScriptingObjectPtr ConvertCollision2DToScripting (Collision2D* input);
+#endif
+
+
+// --------------------------------------------------------------------------
+
+
+class CollisionListener2D : public b2ContactListener
+{
+public:
+	CollisionListener2D();
+
+	// b2ContactListener interface
+	virtual void BeginContact(b2Contact* contact);
+	virtual void EndContact(b2Contact* contact);
+	virtual void PreSolve(b2Contact* contact, const b2Manifold* oldManifold);
+
+	void ReportCollisions();
+	void InvalidateColliderCollisions(Collider2D* collider);
+	void DestroyColliderCollisions(Collider2D* collider);
+
+private:
+	// Collision information is stored for each collider pair (the key is sorted by instance IDs so it always identifies the pair).
+	// In the collision information, contact points etc. are stored.
+	typedef std::pair<Collider2D*,Collider2D*> ColliderKey;
+	struct ColliderKeyHashFunctor
+	{
+		inline size_t operator()(const ColliderKey& x) const
+		{
+			UInt32 xa = x.first->GetInstanceID();
+			UInt32 xb = x.second->GetInstanceID();
+			UInt32 a = xa;
+			a = (a+0x7ed55d16) + (a<<12);
+			a = (a^0xc761c23c) ^ (a>>19);
+			a ^= xb;
+			a = (a+0x165667b1) + (a<<5);
+			a = (a+0xd3a2646c) ^ (a<<9);
+			return a;
+		}
+	};
+	typedef std::pair<const ColliderKey, Collision2D> ColliderKeyToCollisionPair;
+	typedef dense_hash_map<ColliderKey, Collision2D, ColliderKeyHashFunctor, std::equal_to<ColliderKey>, STL_ALLOCATOR(kMemSTL, ColliderKeyToCollisionPair) > ColliderMap;
+
+private:
+	ColliderMap	m_Collisions;
+	bool m_ReportingCollisions;
+};
+
+#endif