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C-/C++-Quelltext

string Collision::Intersects(SDL_Rect a, SDL_Rect b)
{                             // top, right, bottom, left, posBerechnung
    string illegalDirection = "0000";
    xPosCalculate = 0; yPosCalculate = 0;

    if ( ((b.y + b.h) >= (a.y - 1)) && ((b.y + b.h) < (a.y + 10)) && ((a.x >= b.x && a.x <= (b.x + b.w)) || ((a.x + a.w) <= (b.x + b.w) && (a.x + a.w) >= b.x)) ) //nach oben prüfen
    {
            illegalDirection[0] = '1';
            if((b.y + b.h) - a.y >= 0)
                yPosCalculate = (b.y + b.h) - a.y + 1;
    }

    if ( ( b.x <= (a.x + a.w + 1)) && (b.x > (a.x + a.w - 10)) && ((a.y >= b.y && a.y <= (b.y + b.h)) || ((a.y + a.h) <= (b.y + b.h) && (a.y + a.h) >= b.y)) ) // nach rechts prüfen
    {
        illegalDirection[1] = '1';

        if((a.x + a.w) - b.x >= 0)
            xPosCalculate = ( ((a.x + a.w) - b.x) * -1) -1;
    }

    if ( (b.y <= (a.y + a.h + 1)) && (b.y > (a.y + a.h - 10)) && ((a.x >= b.x && a.x <= (b.x + b.w)) || ((a.x + a.w) <= (b.x + b.w) && (a.x + a.w) >= b.x)) ) //nach unten prüfen
    {   
        illegalDirection[2] = '1';

        if((a.y + a.h) - b.y >= 0)
                yPosCalculate = ( ((a.y + a.h)  - b.y) * -1) -1;
    }

    if ( ((b.x + b.w) >= (a.x - 1)) && ((b.x + b.w) < (a.x + 10)) && ((a.y >= b.y && a.y <= (b.y + b.h)) || ((a.y + a.h) <= (b.y + b.h) && (a.y + a.h) >= b.y)) ) // nach links prüfen
    {
        illegalDirection[3] = '1';

        if((b.x + b.w) - a.x >= 0)
            xPosCalculate = (b.x + b.w) - a.x + 1;
    }
        
    return illegalDirection;
}