collisions.h

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#ifndef COLLISIONS_H
#define COLLISIONS_H

    #include "../engine/le3d.h"

    namespace LeCollisions {
        
        typedef enum{
            COLLISIONS_RECT_NO_COL      = 0x00,     
            COLLISIONS_RECT_LEFT_COL    = 0x01,     
            COLLISIONS_RECT_RIGHT_COL   = 0x02,     
            COLLISIONS_RECT_TOP_COL = 0x03,     
            COLLISIONS_RECT_BOTTOM_COL = 0x04,      
        }COLLISIONS_RECT_RESULT;

        typedef enum{
            COLLISIONS_SPHERE_NO_COL    = 0x00,     
            COLLISIONS_SPHERE_SURFACE   = 0x01,     
        }COLLISIONS_SPHERE_RESULT;

        typedef enum{
            COLLISIONS_BOX_NO_COL       = 0x00,     
            COLLISIONS_BOX_SIDE     = 0x01,     
            COLLISIONS_BOX_EDGE     = 0x02,     
            COLLISIONS_BOX_CORNER       = 0x03,     
        }COLLISIONS_BOX_RESULT;
        
        typedef enum{
            COLLISIONS_MESH_NO_COL      = 0x00,     
            COLLISIONS_MESH_SIDE        = 0x01,     
            COLLISIONS_MESH_EDGE        = 0x02,     
        }COLLISIONS_MESH_RESULT;

        /*****************************************************************************/
        typedef enum{
            COLLISIONS_BOX_TRACE_NO_INTER   = 0x00,         
            COLLISIONS_BOX_TRACE_LEFT       = 0x01,         
            COLLISIONS_BOX_TRACE_RIGHT      = 0x02,         
            COLLISIONS_BOX_TRACE_BOTTOM = 0x03,         
            COLLISIONS_BOX_TRACE_TOP        = 0x04,         
            COLLISIONS_BOX_TRACE_BACK       = 0x05,         
            COLLISIONS_BOX_TRACE_FRONT      = 0x06,         
        }COLLISIONS_BOX_TRACE_RESULT;

        /*****************************************************************************/
        int collideRectRect(float &ansX, float &ansY, float srcX, float srcY, float srcW, float srcH, float dstX, float dstY, float dstW, float dstH);
        int collideSphereSphere(LeVertex &ans, LeVertex &contact, const LeVertex &pos, float srcRadius, float dstRadius);
        int collideSphereBox(LeVertex &ans, LeVertex &contact, const LeVertex &pos, float srcRadius, const LeVertex &dstSize);
        int collideSphereMesh(LeVertex &ans, LeVertex &contact, const LeVertex &pos, float srcRadius, const LeMesh * dstMesh);

        int traceSphere(const LeVertex &pos, float radius, const LeVertex &axis, float &distance);
        int traceBox(const LeVertex &pos, const LeVertex &size, const LeVertex &axis, float &distance);
        int traceMesh(const LeMesh * mesh, const LeAxis &axis, float &distance);
    
    }
    
#endif // COLLISIONS_H