Method copyChainCollisionShapeTo

engine/source/2d/sceneobject/SceneObject.cc:3257–3295

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S32 SceneObject::copyChainCollisionShapeTo( SceneObject* pSceneObject, const b2FixtureDef& fixtureDef ) const
{
    // Fetch shape.
    const b2ChainShape* pShape = dynamic_cast<const b2ChainShape*>( fixtureDef.shape );

    // Check shape.
    if ( !pShape )
    {
        Con::errorf("SceneObject::copyChainCollisionShapeTo() - Invalid shape.");
        return INVALID_COLLISION_SHAPE_INDEX;
    }

    // Fetch point count.
    const U32 pointCount = pShape->m_count;

    // Fetch local points.
    b2Vec2* localPoints = pShape->m_vertices;

    // Fetch adjacent positions.
    const bool hasAdjacentLocalPositionStart = pShape->m_hasPrevVertex;
    const bool hasAdjacentLocalPositionEnd   = pShape->m_hasNextVertex;
    const b2Vec2 adjacentLocalPositionStart  = pShape->m_prevVertex;
    const b2Vec2 adjacentLocalPositionEnd    = pShape->m_nextVertex;

    // Create shape.
    const S32 shapeIndex = pSceneObject->createChainCollisionShape(
        pointCount, localPoints,
        hasAdjacentLocalPositionStart, hasAdjacentLocalPositionEnd,
        adjacentLocalPositionStart, adjacentLocalPositionEnd);

    // Was shape created.
    if ( shapeIndex != -1 )
    {
        // Yes, so configure shape.
        pSceneObject->setCollisionShapeDefinition( shapeIndex, fixtureDef );
    }

    return shapeIndex;
}

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