public static void Move()
{
MGame Game = MGame.Instance;
MSnake Snake = Game.Snake;
//Get the orientation of the snake
SnakeOrientation orientation = Snake.Orientation;
Tuple <int, int> PreviousPosition = Snake.snakebody.First();
int newX = PreviousPosition.Item1;
int newY = PreviousPosition.Item2;
//New position depending on the orientation
switch (orientation)
{
case SnakeOrientation.Bottom:
newY = newY + 1;
break;
case SnakeOrientation.Up:
newY = newY - 1;
break;
case SnakeOrientation.Right:
newX = newX + 1;
break;
case SnakeOrientation.Left:
newX = newX - 1;
break;
}
Tuple <int, int> NewPosition = new Tuple <int, int>(newX, newY);
//Check for the intern events (Collisions, GameOver, etc...)
if (newX < 0 || newY < 0 || newX >= Game.Map.Width || newY >= Game.Map.Height)
{
GameContext.Instance.IsOver = true;
GameContext.Instance.HasHitTheWall = true;
return;
}
//Check for collision with itself
if (Snake.snakebody.Contains(new Tuple <int, int>(newX, newY)))
{
Snake.Nblife--;
//Check for remaining number of lifes
if (Snake.Nblife.Equals(0))
{
GameContext.Instance.IsOver = true;
return;
}
//Remove half of snake
while (!Snake.snakebody.Last.Value.Equals(new Tuple <int, int>(newX, newY)))
{
Snake.snakebody.RemoveLast();
}
}
//We are OK => Go forward
Snake.snakebody.AddFirst(new Tuple <int, int>(newX, newY));
//Check if we are in the position of the fruit
Tuple <int, int> positionFruit = MGame.Instance.Fruit.Position;
bool FruitInCase = (newX == positionFruit.Item1 && newY == positionFruit.Item2);
//If there is no fruit, we remove the last part of the snake
if (FruitInCase)
{
Game.Fruit.GetTypeFruit.Effect();
Game.GenerateFruit();
}
else
{
Snake.snakebody.RemoveLast();
}
}
