gelCollision.h

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/*
Gel2D Game Engine - Cross-platform 2D gaming middleware
Copyright (C) 2011 Mark D. Procarione

Gel2D is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Gel2D is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/

#ifndef __GELCOLLISION_H__
#define __GELCOLLISION_H__

#include "gelVector.h"

namespace gel
{

        class GelCircle
        {
                public:

                        GelCircle() : pos(0.0f), radius(0.0f) {}


                        GelCircle( Gel2dVec _pos, float _radius ) : pos(_pos), radius(_radius) {}

                public:
                        Gel2dVec pos;
                        float radius;
        };

        class GelAABB
        {
                public:

                        GelAABB() { min = 0.0f; max = 1.0f; }


                        GelAABB( Gel2dVec minpos, Gel2dVec maxpos ) { min = minpos; max = maxpos; }

                public:
                        Gel2dVec min;
                        Gel2dVec max;
        };

        class GelOBB
        {
                public:

                        GelOBB() : pos(0.0f), extent(1.0f) {}


                        GelOBB( Gel2dVec _pos, Gel2dVec _extent ) : pos(_pos), extent(_extent) {}

                public:
                        Gel2dVec pos;
                        Gel2dVec extent;
        };

        class GelRay
        {
                public:

                        GelRay() : start(0.0f), end(1.0f) {}


                        GelRay( Gel2dVec _start, Gel2dVec _end ) : start(_start), end(_end) {}

                public:
                        Gel2dVec start;
                        Gel2dVec end;
        };

        class GelCdtPoint
        {
                public:
                        GelCdtPoint() : pos(0.0f) {}

                        GelCdtPoint( float x, float y ) : pos(x, y) {}

                        GelCdtPoint( Gel2dVec coords ) : pos(coords) {}

                public:
                        Gel2dVec pos;
        };

        class GelCollision
        {
                public:

                        static bool collides( const GelCircle &cir1, const GelCircle &cir2 );


                        static bool collides( const GelCircle &cir, const GelAABB &box );

                        static bool collides( const GelCircle &cir, const GelOBB &box );

                        static bool collides( const GelCircle &cir, const GelRay &ray );


                        static bool collides( const GelCircle &cir, const GelCdtPoint &point );


                        static bool collides( const GelAABB &box1, const GelAABB &box2 );


                        static bool collides( const GelAABB &box, const GelCircle &cir );

                        static bool collides( const GelAABB &box1, const GelOBB &box2 );

                        static bool collides( const GelAABB &box, const GelRay &ray );


                        static bool collides( const GelAABB &box, const GelCdtPoint &point );


                        static bool collides( const GelOBB &box1, const GelOBB &box2 );

                        static bool collides( const GelOBB &box, const GelCircle &cir );

                        static bool collides( const GelOBB &box, const GelRay &ray );

                        static bool collides( const GelOBB &box, const GelCdtPoint &point );


                        static bool collides( const GelRay &ray1, const GelRay &ray2 );

                        static bool collides( const GelRay &ray, const GelCircle &cir );

                        static bool collides( const GelRay &ray, const GelOBB &box );

                        static bool collides( const GelRay &ray, const GelCdtPoint &point );



                        static bool collides( const GelCdtPoint &point1, const GelCdtPoint &point2 );


                        static bool collides( const GelCdtPoint &point, const GelCircle &cir );


                        static bool collides( const GelCdtPoint &point, const GelAABB &box );

                        static bool collides( const GelCdtPoint &point, const GelOBB &box );

                        static bool collides( const GelCdtPoint &point, const GelRay &ray );
        };
}

#endif // __GELCOLLISION_H__