successful line-making according to the Bresenham method

void lineDrawing()
{
  int xIncrease = mouseOldCordX < mouseNewCordX ? 1 : -1;
  int yIncrease = mouseOldCordY < mouseNewCordY ? 1 : -1;
  int deltaX =  abs(mouseNewCordX - mouseOldCordX);
  int deltaY = -abs(mouseNewCordY - mouseOldCordY);
  int error = deltaX + deltaY;

  while (true)
  {
    world[mouseOldCordX][mouseOldCordY].state = selectedState;

    if ((mouseOldCordX == mouseNewCordX) && (mouseOldCordY == mouseNewCordY)) break;

    int doubleError = 2 * error;

    if (doubleError >= deltaY)
    {
      error += deltaY;
      mouseOldCordX += xIncrease;
    }

    if (doubleError <= deltaX)
    {
      error += deltaX;
      mouseOldCordY += yIncrease;
    }
  }
}