private void MoveSnake()
{
while (snakeBodyParts.Count >= snakeLength)
{
GameArea.Children.Remove(snakeBodyParts[0].UiElement);
snakeBodyParts.RemoveAt(0);
}
foreach (snakePart snakeBody in snakeBodyParts)
{
(snakeBody.UiElement as Ellipse).Fill = snakeBodyColor;
snakeBody.IsHead = false;
}
snakePart snakeHead = snakeBodyParts[snakeBodyParts.Count - 1];
double nextX = snakeHead.Position.X;
double nextY = snakeHead.Position.Y;
switch (snakeDirection)
{
case SnakeDirection.Left:
nextX -= SnakePartsSize;
break;
case SnakeDirection.Right:
nextX += SnakePartsSize;
break;
case SnakeDirection.Up:
nextY -= SnakePartsSize;
break;
case SnakeDirection.Down:
nextY += SnakePartsSize;
break;
}
snakeBodyParts.Add(new snakePart()
{
Position = new Point(nextX, nextY),
IsHead = true
});
DrawSnake();
CollisionCheck();
}
private void CollisionCheck()
{
snakePart snakeHead = snakeBodyParts[snakeBodyParts.Count - 1];
if ((snakeHead.Position.X == Canvas.GetLeft(food)) && (snakeHead.Position.Y == Canvas.GetTop(food)))
{
SnakeEats();
return;
}
if ((snakeHead.Position.Y < 0) || (snakeHead.Position.Y >= GameArea.ActualHeight) ||
(snakeHead.Position.X < 0) || (snakeHead.Position.X >= GameArea.ActualWidth))
{
EndGame();
}
foreach (snakePart snakeBodyPart in snakeBodyParts.Take(snakeBodyParts.Count - 1))
{
if ((snakeHead.Position.X == snakeBodyPart.Position.X) && (snakeHead.Position.Y == snakeBodyPart.Position.Y))
{
EndGame();
}
}
}