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#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
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