public boolean pushUp(SokobanLogic a){
        SokobanLogic b = a;
        if (b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] == '$' &&
                b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] == ' '){
                    b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] = '$';
                    b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] = '@';
                    return true;
        } else if (b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] == '*' &&
            b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] == '.' ){
                b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] = '*';
                b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] = '+';
                return true;
        } else if (b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] == '$' &&
            b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] == '.' ){
                b.cL.map[b.cL.yPlayer - 2][b.cL.xPlayer] = '*';
                b.cL.map[b.cL.yPlayer - 1][b.cL.xPlayer] = '@';
                return true;
        }
        return false;
    }