/// <summary>
/// If user didn't hit anything than he and his body parts can move
/// </summary>
private void Check()
{
// Move the snake
Snake.X += Snake.XSpeed;
Snake.Y += Snake.YSpeed;
// Moves the body parts of a snake.
for (int i = Score - 1; i >= 0; i--)
{
if (i == 0)
{
SnakeBodyParts[i] = move.MoveSquare(Snake, SnakeBodyParts[i]);
}
else
{
SnakeBodyParts[i] = move.MoveSquare(SnakeBodyParts[i - 1], SnakeBodyParts[i]);
}
}
// Player eats the apple if he gets close
if (Snake.X > Apple.X - 10 &&
Snake.X < Apple.X + 10 &&
Snake.Y > Apple.Y - 10 &&
Snake.Y < Apple.Y + 10)
{
// Creates new body part
SnakeSquare square = new SnakeSquare();
// If this is the first body part to be created then use snake's coordinates
if (Score == 0)
{
square = create.CreateSquare(Snake, square);
SnakeBodyParts.Add(square);
}
// else use last snake body part
else
{
// Search for last snake body part
var lastBodyPart = SnakeBodyParts.ElementAt(Score - 1);
square = create.CreateSquare(SnakeBodyParts[Score - 1], square);
SnakeBodyParts.Add(square);
}
Score++;
// Create new apple
Apple.SpawnApple();
}
}
