CUBoxObstacle.h

//
//  CUBoxObstacle.h
//  Cornell University Game Library (CUGL)
//
//  This class implements a rectangular physics object, and is the primary type
//  of physics object to use.  Hence the name, Box2D.
//
//  This class uses our standard shared-pointer architecture.
//
//  1. The constructor does not perform any initialization; it just sets all
//     attributes to their defaults.
//
//  2. All initialization takes place via init methods, which can fail if an
//     object is initialized more than once.
//
//  3. All allocation takes place via static constructors which return a shared
//     pointer.
//
//  CUGL zlib License:
//      This software is provided 'as-is', without any express or implied
//      warranty.  In no event will the authors be held liable for any damages
//      arising from the use of this software.
//
//      Permission is granted to anyone to use this software for any purpose,
//      including commercial applications, and to alter it and redistribute it
//      freely, subject to the following restrictions:
//
//      1. The origin of this software must not be misrepresented; you must not
//      claim that you wrote the original software. If you use this software
//      in a product, an acknowledgment in the product documentation would be
//      appreciated but is not required.
//
//      2. Altered source versions must be plainly marked as such, and must not
//      be misrepresented as being the original software.
//
//      3. This notice may not be removed or altered from any source distribution.
//
//  This file is based on the CS 3152 PhysicsDemo Lab by Don Holden, 2007
//
//  Author: Walker White
//  Version: 11/6/16
//
#ifndef __CU_BOX_OBSTACLE_H__
#define __CU_BOX_OBSTACLE_H__

#include <Box2D/Collision/Shapes/b2PolygonShape.h>
#include "CUSimpleObstacle.h"

namespace cugl {

#pragma mark -
#pragma mark Box Obstacle

class BoxObstacle : public SimpleObstacle {
protected:
    b2PolygonShape _shape;
    b2Fixture* _geometry;
    Size _dimension;
    
    
#pragma mark -
#pragma mark Scene Graph Methods

    void resize(const Size& size);
    
    virtual void resetDebug() override;

    
#pragma mark -
#pragma mark Constructors
public:
    BoxObstacle(void) : SimpleObstacle(), _geometry(nullptr) { }
    
    virtual ~BoxObstacle() {
        CUAssertLog(_geometry == nullptr, "You must deactive physics before deleting an object");
    }

    virtual bool init() override { return init(Vec2::ZERO,Size::ZERO); }
    
    virtual bool init(const Vec2& pos) override { return init(pos,Size::ZERO); }
    
    virtual bool init(const Vec2& pos, const Size& size);

    
#pragma mark -
#pragma mark Static Constructors

    static std::shared_ptr<BoxObstacle> alloc() {
        std::shared_ptr<BoxObstacle> result = std::make_shared<BoxObstacle>();
        return (result->init() ? result : nullptr);
    }
    
    static std::shared_ptr<BoxObstacle> alloc(const Vec2& pos) {
        std::shared_ptr<BoxObstacle> result = std::make_shared<BoxObstacle>();
        return (result->init(pos) ? result : nullptr);
    }
    
    static std::shared_ptr<BoxObstacle> alloc(const Vec2& pos, const Size& size) {
        std::shared_ptr<BoxObstacle> result = std::make_shared<BoxObstacle>();
        return (result->init(pos,size) ? result : nullptr);
    }
    
    
#pragma mark -
#pragma mark Dimensions

    const Size& getDimension() const { return _dimension; }
    
    void setDimension(const Size& value)         { resize(value); markDirty(true); }
    
    void setDimension(float width, float height) { setDimension(Size(width,height)); }

    float getWidth() const { return _dimension.width; }
    
    void setWidth(float value) { setDimension(value,_dimension.height); }
    
    float getHeight() const { return _dimension.height; }
    
    void setHeight(float value) { setDimension(_dimension.width,value); }
    
    
#pragma mark -
#pragma mark Physics Methods

    virtual void createFixtures() override;
    
    virtual void releaseFixtures() override;
    
};

}
#endif /* __CU_BOX_OBSTACLE_H__ */