CUWheelObstacle.h

//
//  CUWheelObstacle.h
//  Cornell Extensions to Cocos2D
//
//  This class implements a circular Physics object. We do not use it in any of our
//  samples,  but it is included for your education.  Note that the shape must be
//  circular, not elliptical.  If you want to make an ellipse, you will need to use
//  the PolygonObstacle class.
//
//  This file is based on the CS 3152 PhysicsDemo Lab by Don Holden, 2007
//
//  Author: Walker White
//  Version: 11/24/15
//
#ifndef __CU_WHEEL_OBSTACLE_H__
#define __CU_WHEEL_OBSTACLE_H__

#include <Box2D/Collision/Shapes/b2CircleShape.h>
#include "CUSimpleObstacle.h"


NS_CC_BEGIN

#pragma mark -
#pragma mark Wheel Obstacle

class CC_DLL WheelObstacle : public SimpleObstacle {
private:
    CC_DISALLOW_COPY_AND_ASSIGN(WheelObstacle);
    
protected:
    b2CircleShape _shape;
    b2Fixture* _geometry;

    
#pragma mark -
#pragma mark Scene Graph Methods

    virtual void resetDebugNode() override;

    
public:
#pragma mark -
#pragma mark Static Constructors

    static WheelObstacle* create();
    
    static WheelObstacle* create(const Vec2& pos);
    
    static WheelObstacle* create(const Vec2& pos, float radius);

    
#pragma mark -
#pragma mark Dimensions

    float getRadius() const { return _shape.m_radius; }
    
    void setRadius(float value) { _shape.m_radius = value; markDirty(true); }
    
    
#pragma mark -
#pragma mark Physics Methods

    virtual void createFixtures() override;
    
    virtual void releaseFixtures() override;
    
    
    
#pragma mark -
#pragma mark Initializers
CC_CONSTRUCTOR_ACCESS:
    /*
     * Creates a new wheel object at the origin.
     */
    WheelObstacle(void) : SimpleObstacle(), _geometry(nullptr) { }
    
    virtual bool init() override { return init(Vec2::ZERO,0.0); }
    
    virtual bool init(const Vec2& pos) override { return init(pos,0.0); }
    
    virtual bool init(const Vec2& pos, float radius);
};

NS_CC_END
#endif /* defined(__CU_WHEEL_OBSTACLE_H__) */