private void GenNewSnakeNode()
{
SnakeNode snakeNode = null;
switch (Direct)
{
case Direction.UP:
snakeNode = new SnakeNode(new Point(SnakeNodes[SnakeHead]._pos.X,
SnakeNodes[SnakeHead]._pos.Y - 1));
break;
case Direction.DOWN:
snakeNode = new SnakeNode(new Point(SnakeNodes[SnakeHead]._pos.X,
SnakeNodes[SnakeHead]._pos.Y + 1));
break;
case Direction.LEFT:
snakeNode = new SnakeNode(new Point(SnakeNodes[SnakeHead]._pos.X - 1,
SnakeNodes[SnakeHead]._pos.Y));
break;
case Direction.RIGHT:
snakeNode = new SnakeNode(new Point(SnakeNodes[SnakeHead]._pos.X + 1,
SnakeNodes[SnakeHead]._pos.Y));
break;
}
if (snakeNode != null)
{
SnakeNodes.Insert(0, snakeNode);
myCanvas.Children.Add(SnakeNodes[0]._rect);
}
}
private void UpdateSnakeNodes()
{
foreach (var snakeNode in SnakeNodes)
{
if (snakeNode == Head.Value)
{
continue;
}
var currentNode = SnakeNodes.Find(snakeNode);
var nextNode = currentNode?.Next?.Value;
if (snakeNode.Column < nextNode?.Column)
{
snakeNode.Column += 1;
}
if (snakeNode.Column > nextNode?.Column)
{
snakeNode.Column -= 1;
}
if (snakeNode.Row < nextNode?.Row)
{
snakeNode.Row += 1;
}
if (snakeNode.Row > nextNode?.Row)
{
snakeNode.Row -= 1;
}
}
}
private void ClearSnakeNodes()
{
if (SnakeNodes.Any())
{
SnakeNodes.Clear();
}
if (SnakeObjects.Any())
{
SnakeObjects.Clear();
}
}