public Snake(Canvas gameBoard)
{
GameBoard = gameBoard;
SnakeHead = new SnakeHead(GameBoard, 300, 300);
SnakeBody = new List <SnakeBodyPart>();
AddSnakeBody();
AddSnakeBody();
}
public void Update(Food food)
{
// Snake head move
SnakeHead.Move();
SnakeHead.Update();
//Snake bodypart move
Direction previousDirection;
Direction nextDirection = SnakeHead.Direction;
foreach (var part in SnakeBody)
{
part.Move();
part.Update();
previousDirection = part.Direction;
part.Direction = nextDirection;
nextDirection = previousDirection;
}
//check if snake head hit wall
if (SnakeHead.HitWall())
{
OnHitWall?.Invoke();
}
//check if snake eat food
if (SnakeHead.EatenFood(food))
{
OnFoodEaten?.Invoke();
AddSnakeBody();
}
//check if snakehead hit body
foreach (var part in SnakeBody)
{
if (SnakeHead.X == part.X && SnakeHead.Y == part.Y)
{
OnHitBody?.Invoke();
}
}
IsUpdating = false;
}
public void ChangeDirection(Direction dir)
{
if (!IsUpdating)
{
if (SnakeHead.Direction == dir)
{
return;
}
if ((SnakeHead.Direction == Direction.East && dir == Direction.West) || (SnakeHead.Direction == Direction.West && dir == Direction.East))
{
return;
}
if ((SnakeHead.Direction == Direction.South && dir == Direction.North) || (SnakeHead.Direction == Direction.North && dir == Direction.South))
{
return;
}
IsUpdating = true;
SnakeHead.ChangeDirection(dir);
}
}