public bool DoMove(Direction direction)
{
var tail = Body.LastOrDefault();
var head = Body.FirstOrDefault();
if (tail != null && head != null)
{
switch (direction)
{
case Direction.Up:
if (_lastDirection == Direction.Down)
{
direction = Direction.Down;
}
break;
case Direction.Right:
if (_lastDirection == Direction.Left)
{
direction = Direction.Left;
}
break;
case Direction.Down:
if (_lastDirection == Direction.Up)
{
direction = Direction.Up;
}
break;
case Direction.Left:
if (_lastDirection == Direction.Right)
{
direction = Direction.Right;
}
break;
}
var x = direction == Direction.Right ? 1 : (direction == Direction.Left ? -1 : 0);
var y = direction == Direction.Down ? 1 : (direction == Direction.Up ? -1 : 0);
var newPos = new Tile(head.X + x, head.Y + y);
if (newPos.X < _map.X && newPos.X >= 0 && newPos.Y < _map.Y && newPos.Y >= 0 &&
!Body.Any(s => s.X == newPos.X && s.Y == newPos.Y))
{
_lastTail = new Tile(tail.X, tail.Y);
Body.RemoveAt(Body.Count - 1);
Body.Insert(0, newPos);
_lastDirection = direction;
if (OnMove != null)
{
OnMove(null, null);
}
return true;
}
}
return false;
}
public Vector2 Tile2Positon(Tile tile)
{
return new Vector2(Center.X + tile.X * TileSize, Center.Y + tile.Y * TileSize);
}
public void Generate()
{
Position = GetFreeTiles().OrderBy(x => Guid.NewGuid()).FirstOrDefault();
}