1 files changed, 157 insertions, 0 deletions
diff --git a/Runtime/Physics2D/CircleCollider2D.cpp b/Runtime/Physics2D/CircleCollider2D.cpp
new file mode 100644
index 0000000..a34a94b
--- /dev/null
+++ b/Runtime/Physics2D/CircleCollider2D.cpp
@@ -0,0 +1,157 @@
+#include "UnityPrefix.h"
+
+#if ENABLE_2D_PHYSICS
+#include "Runtime/Physics2D/CircleCollider2D.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(gPhysics2DProfileCircleColliderCreate, "Physics2D.CircleColliderCreate", kProfilerPhysics)
+
+
+IMPLEMENT_CLASS (CircleCollider2D)
+IMPLEMENT_OBJECT_SERIALIZE (CircleCollider2D)
+
+
+// --------------------------------------------------------------------------
+
+
+CircleCollider2D::CircleCollider2D (MemLabelId label, ObjectCreationMode mode)
+: Super(label, mode)
+{
+}
+
+
+CircleCollider2D::~CircleCollider2D ()
+{
+}
+
+
+template<class TransferFunction>
+void CircleCollider2D::Transfer (TransferFunction& transfer) 
+{
+	Super::Transfer (transfer);
+
+	TRANSFER (m_Radius);
+	TRANSFER (m_Center);
+}
+
+
+void CircleCollider2D::CheckConsistency ()
+{
+	Super::CheckConsistency ();
+
+	m_Radius = clamp<float> (m_Radius, PHYSICS_2D_SMALL_RANGE_CLAMP, PHYSICS_2D_LARGE_RANGE_CLAMP);
+
+	if (!IsFinite (m_Center))
+		m_Center = Vector2f::zero;
+}
+
+
+void CircleCollider2D::Reset ()
+{
+	Super::Reset ();
+
+	m_Radius = 0.5f;
+	m_Center = Vector2f::zero;
+}
+
+
+void CircleCollider2D::SmartReset ()
+{
+	Super::SmartReset ();
+
+	AABB aabb;
+	if (GetGameObjectPtr () && CalculateLocalAABB (GetGameObject (), &aabb))
+	{
+		Vector3f dist = aabb.GetExtent ();
+		m_Radius = clamp<float> (std::max(dist.x, dist.y), PHYSICS_2D_SMALL_RANGE_CLAMP, PHYSICS_2D_LARGE_RANGE_CLAMP);		
+		m_Center.x = aabb.GetCenter().x;
+		m_Center.y = aabb.GetCenter().y;
+		return;
+	}
+
+	m_Radius = 0.5f;
+	m_Center = Vector2f::zero;
+}
+
+
+void CircleCollider2D::SetRadius (float radius)
+{
+	ABORT_INVALID_FLOAT (radius, radius, CircleCollider2D);
+
+	// Finish if no change.
+	if (m_Radius == radius)
+		return;
+
+	m_Radius = clamp<float> (radius, PHYSICS_2D_SMALL_RANGE_CLAMP, PHYSICS_2D_LARGE_RANGE_CLAMP);
+
+	if (GetShape() == NULL)
+		return;
+
+	SetDirty ();
+	Create();
+}
+
+
+void CircleCollider2D::SetCenter (const Vector2f& center)
+{
+	ABORT_INVALID_VECTOR2 (center, center, CircleCollider2D);
+
+	// Finish if no change.
+	if (m_Center == center)
+		return;
+
+	m_Center = center;
+
+	SetDirty ();
+	Create();
+}
+
+
+// --------------------------------------------------------------------------
+
+
+void CircleCollider2D::Create (const Rigidbody2D* ignoreRigidbody)
+{
+	PROFILER_AUTO(gPhysics2DProfileCircleColliderCreate, 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);
+
+	// Fetch scale.
+	const Vector3f scale = GetComponent(Transform).GetWorldScaleLossy();
+
+	// Calculate collider center.
+	Vector3f center = relativeTransform.MultiplyPoint3(Vector3f(m_Center.x * scale.x, m_Center.y * scale.y, 0.0f));
+
+	// Calculate scaled radius.
+	const float scaledRadius = clamp<float> (max( PHYSICS_2D_SMALL_RANGE_CLAMP, max (Abs (scale.x), Abs (scale.y)) * m_Radius), PHYSICS_2D_SMALL_RANGE_CLAMP, PHYSICS_2D_LARGE_RANGE_CLAMP);
+
+	// Create the shape.
+	b2CircleShape shape;
+	shape.m_p.Set(center.x, center.y);
+	shape.m_radius = scaledRadius;
+	b2FixtureDef def;
+	def.shape = &shape;
+
+	// Finalize the creation.
+	FinalizeCreate (def, body);
+}
+
+#endif // #if ENABLE_2D_PHYSICS