for (int i = 0; i < blocks.size(); i++)
        {
            if (((player.x + 11) > blocks[i].x and player.x < blocks[i].x + 50) and ((player.y + 19) > blocks[i].y and player.y < blocks[i].y + 50))
            {
                player.x = player.xprevious;
                player.y = player.yprevious - 0.1;
                player.vspeed = 0;
                player.gravity_on = false;
                cjump = true;
            }
        }