void Step()
{
state = new CellState[height, width];
int birdX = bird.getX();
int birdY = bird.getY();
state[birdY, birdX] = CellState.Bird;
foreach (var wall in walls)
{
int[] wallArray = wall.getWall();
for (int y = 0; y < wallArray.Length; y++)
{
if (wallArray[y] == 0)
{
state[y, wall.getCurrentX()] = CellState.Pillar;
}
}
}
CheckCollision();
}