1 files changed, 167 insertions, 0 deletions
diff --git a/Runtime/Physics2D/BoxCollider2D.cpp b/Runtime/Physics2D/BoxCollider2D.cpp
new file mode 100644
index 0000000..7b32134
--- /dev/null
+++ b/Runtime/Physics2D/BoxCollider2D.cpp
@@ -0,0 +1,167 @@
+#include "UnityPrefix.h"
+
+#if ENABLE_2D_PHYSICS
+#include "Runtime/Physics2D/BoxCollider2D.h"
+#include "Runtime/Physics2D/RigidBody2D.h"
+#include "Runtime/Physics2D/Physics2DManager.h"
+#include "Runtime/Graphics/Transform.h"
+#include "Runtime/Filters/AABBUtility.h"
+#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
+#include "Runtime/Profiler/Profiler.h"
+#include "Runtime/Utilities/ValidateArgs.h"
+
+#include "External/Box2D/Box2D/Box2D.h"
+
+PROFILER_INFORMATION(gPhysics2DProfileBoxColliderCreate, "Physics2D.BoxColliderCreate", kProfilerPhysics)
+
+IMPLEMENT_CLASS (BoxCollider2D)
+IMPLEMENT_OBJECT_SERIALIZE (BoxCollider2D)
+
+
+// --------------------------------------------------------------------------
+
+
+BoxCollider2D::BoxCollider2D (MemLabelId label, ObjectCreationMode mode)
+: Super(label, mode)
+{
+}
+
+
+BoxCollider2D::~BoxCollider2D ()
+{
+}
+
+
+template<class TransferFunction>
+void BoxCollider2D::Transfer (TransferFunction& transfer) 
+{
+	Super::Transfer (transfer);
+
+	TRANSFER (m_Size);
+	TRANSFER (m_Center);
+}
+
+
+void BoxCollider2D::CheckConsistency ()
+{
+	Super::CheckConsistency ();
+
+	if (IsFinite (m_Size))
+	{
+		m_Size.x = std::max (PHYSICS_2D_SMALL_RANGE_CLAMP, m_Size.x);
+		m_Size.y = std::max (PHYSICS_2D_SMALL_RANGE_CLAMP, m_Size.y);
+	}
+	else
+	{
+		m_Size.Set (1.0f, 1.0f);
+	}
+
+	if (!IsFinite (m_Center))
+		m_Center = Vector2f::zero;
+}
+
+
+void BoxCollider2D::Reset ()
+{
+	Super::Reset ();
+
+	m_Size.Set (1.0f, 1.0f);
+	m_Center = Vector2f::zero;
+}
+
+
+void BoxCollider2D::SmartReset ()
+{
+	Super::SmartReset ();
+
+	AABB aabb;
+	if (GetGameObjectPtr () && CalculateLocalAABB (GetGameObject (), &aabb))
+	{
+		m_Size.x = aabb.GetExtent().x * 2.0f;
+		m_Size.y = aabb.GetExtent().y * 2.0f;
+		m_Center.x = aabb.GetCenter().x;
+		m_Center.y = aabb.GetCenter().y;
+		return;
+	}
+
+	m_Size.Set (1.0f, 1.0f);
+	m_Center = Vector2f::zero;
+}
+
+
+void BoxCollider2D::SetSize (const Vector2f& size)
+{
+	ABORT_INVALID_VECTOR2 (size, size, BoxCollider2D);
+
+	// Finish if no change.
+	if (m_Size == size)
+		return;
+
+	m_Size.x = std::max (PHYSICS_2D_SMALL_RANGE_CLAMP, size.x);
+	m_Size.y = std::max (PHYSICS_2D_SMALL_RANGE_CLAMP, size.y);
+
+	SetDirty ();
+
+	Create();
+}
+
+
+void BoxCollider2D::SetCenter (const Vector2f& center)
+{
+	ABORT_INVALID_VECTOR2 (center, center, BoxCollider2D);
+
+	// Finish if no change.
+	if (m_Center == center)
+		return;
+
+	m_Center = center;
+	SetDirty ();
+
+	Create();
+}
+
+
+// --------------------------------------------------------------------------
+
+
+void BoxCollider2D::Create (const Rigidbody2D* ignoreRigidbody)
+{
+	PROFILER_AUTO(gPhysics2DProfileBoxColliderCreate, NULL);
+
+	// Ensure we're cleaned-up.
+	Cleanup ();
+
+	// Ignore if not active.
+	if (!IsActive())
+		return;
+
+	// Calculate collider transformation.
+	Matrix4x4f relativeTransform;
+	b2Body* body;
+	CalculateColliderTransformation (ignoreRigidbody, &body, relativeTransform);
+
+	// Calculate collider center.
+	const Vector3f scale = GetComponent(Transform).GetWorldScaleLossy();
+	Vector3f center = relativeTransform.MultiplyPoint3 (Vector3f(m_Center.x * scale.x, m_Center.y * scale.y, 0.0f));
+
+	// Calculate rotation.
+	Quaternionf quat;
+	MatrixToQuaternion(relativeTransform, quat);
+	const Vector3f euler = QuaternionToEuler(quat);
+
+	// Calculate scaled size.
+	Vector3f size = GetComponent (Transform).GetWorldScaleLossy ();
+	size.x = max(Abs(size.x * m_Size.x), PHYSICS_2D_SMALL_RANGE_CLAMP);
+	size.y = max(Abs(size.y * m_Size.y), PHYSICS_2D_SMALL_RANGE_CLAMP);
+
+	// Create the shape.
+	b2PolygonShape shape;
+	shape.SetAsBox (size.x*0.5f, size.y*0.5f, b2Vec2(center.x, center.y), euler.z);
+	b2FixtureDef def;
+	def.shape = &shape;
+
+	// Finalize the creation.
+	FinalizeCreate (def, body);
+}
+
+#endif // #if ENABLE_2D_PHYSICS