private List<Vector2> SectionPositions; // Where the worm has been
#endregion Fields
#region Constructors
public Worm(int TileSize)
{
HeadPosition = new Vector2(6, 6);
SectionPositions = new List<Vector2>();
Length = 4;
CameFrom = Direction.WEST;
GridSize = TileSize;
Tail = new Rectangle(2 * GridSize, 0 * GridSize, GridSize, GridSize);
Head = new Rectangle(3 * GridSize, 0 * GridSize, GridSize, GridSize);
Corner = new Rectangle(1 * GridSize, 0 * GridSize, GridSize, GridSize);
Mid1 = new Rectangle(0 * GridSize, 0 * GridSize, GridSize, GridSize);
Mid2 = new Rectangle(1 * GridSize, 1 * GridSize, GridSize, GridSize);
MainColor = new Color(110, 48, 45);
}
public bool Update(GameTime gameTime, List<Direction> Dirs)
{
Vector2 TempPosition = new Vector2(0, 0);
if (Dirs.Count() > 0)
{
foreach(Direction Dir in Dirs) {
if (Dir.Ordinal() != CameFrom.Ordinal())
{
TempPosition = Dir.Move(HeadPosition);
CameFrom = Dir.Opposite();
break;
}
else
{
TempPosition = CameFrom.Opposite().Move(HeadPosition);
}
}
}
else
{
// no input, so go in the opposite direction we came from
TempPosition = CameFrom.Opposite().Move(HeadPosition);
}
// check for collision with self
if (SectionPositions.Exists(x => x.X == TempPosition.X && x.Y == TempPosition.Y))
{
// do something
return false;
}
else {
// add a section where the head is and move the head
SectionPositions.Add(HeadPosition);
HeadPosition = TempPosition;
// delete sections if we exceeded our length
while (SectionPositions.Count() > Length)
{
SectionPositions.RemoveAt(0);
}
return true;
}
}