/// <summary>
/// 蛇身在移动图上移动
/// </summary>
/// <param name="panel"></param>
/// <param name="map"></param>
/// <param name="snake"></param>
/// <param name="direction"></param>
/// <param name="enableBack"></param>
/// <param name="dead"></param>
/// <returns></returns>
public static ModelSnake MoveSnakeOnMap(Panel panel, ModelMap map, ModelSnake snake, ModelEnum.Direction direction, bool enableBack, out bool dead)
{
dead = false;
if (!enableBack)
{
if (direction.Equals(ModelEnum.Direction.Up) && snake.Direction.Equals(ModelEnum.Direction.Down))
direction = snake.Direction;
else if (direction.Equals(ModelEnum.Direction.Down) && snake.Direction.Equals(ModelEnum.Direction.Up))
direction = snake.Direction;
else if (direction.Equals(ModelEnum.Direction.Left) && snake.Direction.Equals(ModelEnum.Direction.Right))
direction = snake.Direction;
else if (direction.Equals(ModelEnum.Direction.Right) &&
snake.Direction.Equals(ModelEnum.Direction.Left))
direction = snake.Direction;
}
else
{
if (direction.Equals(ModelEnum.Direction.Up) && snake.Direction.Equals(ModelEnum.Direction.Down))
snake.Body.Reverse();
else if (direction.Equals(ModelEnum.Direction.Down) && snake.Direction.Equals(ModelEnum.Direction.Up))
snake.Body.Reverse();
else if (direction.Equals(ModelEnum.Direction.Left) && snake.Direction.Equals(ModelEnum.Direction.Right))
snake.Body.Reverse();
else if (direction.Equals(ModelEnum.Direction.Right) &&
snake.Direction.Equals(ModelEnum.Direction.Left))
snake.Body.Reverse();
}
var head = new ModelElement
{
Abscissa = snake.Body[0].Abscissa,
Ordinate = snake.Body[0].Ordinate
};
switch (direction)
{
case ModelEnum.Direction.Left:
head.Abscissa--;
break;
case ModelEnum.Direction.Right:
head.Abscissa++;
break;
case ModelEnum.Direction.Up:
head.Ordinate--;
break;
case ModelEnum.Direction.Down:
head.Ordinate++;
break;
}
if (head.Abscissa < 0) head.Abscissa = map.Column - 1;
else if (head.Abscissa == map.Column) head.Abscissa = 0;
if (head.Ordinate < 0) head.Ordinate = map.Row - 1;
else if (head.Ordinate == map.Row) head.Ordinate = 0;
var d = snake.Body.SingleOrDefault(t => t.Abscissa == head.Abscissa && t.Ordinate == head.Ordinate);
if (d != null)
{
dead = true;
}
var tail = snake.Body[snake.Body.Count - 1];
var m = map.Body.SingleOrDefault(t => t.Bonus && t.Abscissa == tail.Abscissa && t.Ordinate == tail.Ordinate);
if (m == null)
{
DrawMapBox(panel, map.Color, tail.Abscissa, tail.Ordinate, map.Box.Width, map.Box.Height);
snake.Body.Remove(tail);
}
else
{
DrawMapBox(panel, snake.Color, head.Abscissa, head.Ordinate, map.Box.Width, map.Box.Height);
m.Bonus = false;
}
DrawMapBox(panel, snake.Color, head.Abscissa, head.Ordinate, map.Box.Width, map.Box.Height);
snake.Body.Insert(0, head);
snake.Direction = direction;
return snake;
}
public static ModelElement NewBonus(int x, int y)
{
var rm = new Random();
var bonus = new ModelElement
{
Abscissa = rm.Next(0, x),
Ordinate = rm.Next(0, y),
Bonus = true
};
return bonus;
}