public void createApple()
{
Random rnd = new Random();
int xRan = rnd.Next(3, (this.Width - 90) / 30);
int yRan = rnd.Next(3, (this.Height - 90) / 30);
Apple snakeFood = new Apple(xRan * 30, yRan * 30);
Button appleBtn = new Button();
appleBtn.Left = snakeFood.X;
appleBtn.Top = snakeFood.Y;
appleBtn.Width = 30;
appleBtn.Height = 30;
appleBtn.FlatStyle = FlatStyle.Flat;
appleBtn.BackColor = Color.Red;
Controls.Add(appleBtn);
}
/// <summary>
/// Default constructor.
/// </summary>
public GameViewModel()
{
// Initialize player and apple
Snake = new Snake();
Apple = new Apple();
// Initialize collection
SnakeBodyParts = new AsyncObservableCollection <SnakeSquare>();
// Create new timer
Timer = new Timer(100);
// Invoke Move() after interval time
Timer.Elapsed += new ElapsedEventHandler(CheckMove);
Timer.Enabled = true;
// Create command
KeyPressedCommand = new RelayParameterCommand((parameter) => KeyPressed(parameter));
}
private void SnakeMovement(Coordinates newCoordinates)
{
Coordinates newSnakeHeadPosition = newCoordinates;
Coordinates snakeElementToRemove = Snake.Body[0];
Snake.Body.Remove(snakeElementToRemove);
Snake.Body.Add(newSnakeHeadPosition);
PrintSnake();
Console.SetCursorPosition(snakeElementToRemove.X, snakeElementToRemove.Y);
Console.Write(" ");
if (currentApple.X == Snake.Body[Snake.Body.Count - 1].X && currentApple.Y == Snake.Body[Snake.Body.Count - 1].Y)
{
Snake.Body.Add(newCoordinates);
currentApple = GenerateApple();
}
}
static void GameLogic(int dir)
{
if (gameOver)
{
return;
}
ChangeSnakeDir(dir);
if (snake.dir == 0)
{
return;
}
int x = snake.bodies.First.Value.x;
int y = snake.bodies.First.Value.y;
switch (snake.dir)
{
case 1:
y -= 1;
break;
case 2:
y += 1;
break;
case 3:
x -= 1;
break;
case 4:
x += 1;
break;
default:
break;
}
if (x < 0 || x >= W || y < 0 || y >= H)
{
gameOver = true;
return;
}
// 链表移动
snake.bodies.RemoveLast();
snake.bodies.AddFirst(new Pos(x, y));
if (snake.bodies.First.Value.Equals(apple.pos))
{
//
apple = new Apple();
//apple.pos = new Pos(random.Next(0, W), random.Next(0, H));
int n = W * H - snake.bodies.Count;
int rand = random.Next(0, n);
bool[,] temp = new bool[H, W];
LinkedListNode <Pos> p = snake.bodies.First;
while (p != null)
{
temp[p.Value.y, p.Value.x] = true;
p = p.Next;
}
for (int i = 0; i < H; i++)
{
bool flag = false;
for (int j = 0; j < W; j++)
{
if (!temp[i, j])
{
if (rand == 0)
{
apple.pos = new Pos(j, i);
flag = true;
break;
}
rand -= 1;
}
}
if (flag)
{
break;
}
}
// 蛇变长
var tail = snake.bodies.Last.Value;
snake.bodies.AddLast(tail);
}
Debug.WriteLine("snake:{0} {1}", x, y);
}
private void eat(Apple food)
{
food.getEaten();
grow();
applesEaten++;
}
public void Render()
{
/*---------------add Apple to 'myCanvas.Children' if needed--------------*/
if (apple == null)
{
apple = new Apple(rnd.Next(0, 26), rnd.Next(0, 26));
}
if (mycanvas.Children.Contains(apple.Shape))
{
mycanvas.Children.Remove(apple.Shape);
}
apple.Setfoodposition();
mycanvas.Children.Add(apple.Shape);
/*---------------set Position of snakeElements --------------*/
xtmp = snakebody[0].X;
ytmp = snakebody[0].Y;
switch (snakebody[0].Direction)
{
case 0:
{
break;
}
default:
{
for (int i = snakebody.Count - 1; i > 0; i--)
{
snakebody[i].Direction = snakebody[i - 1].Direction;
if (xtmp == snakebody[i].X && ytmp == snakebody[i].Y)
{
snakebody[i].X = snakebody[i - 1].X + ((snakebody[i - 1].Direction == left) ? snakebody[i - 1].Rect.Width : ((snakebody[i - 1].Direction == right) ? -snakebody[i - 1].Rect.Width : 0));
snakebody[i].Y = snakebody[i - 1].Y + ((snakebody[i - 1].Direction == up) ? snakebody[i - 1].Rect.Height : ((snakebody[i - 1].Direction == down) ? -snakebody[i - 1].Rect.Height : 0));
}
}
break;
}
}
/*---------------remove snakeElements from and add them again to 'myCanvas.Children'--------------*/
if (mycanvas.Children.Count != 0)
{
foreach (SnakeElem snkEl in snakebody)
{
if (mycanvas.Children.Contains(snkEl.Rect))
{
mycanvas.Children.Remove(snkEl.Rect);
}
}
foreach (SnakeElem snk in snakebody)
{
foreach (SnakeElem s in snakebody)
{
Canvas.SetLeft(s.Rect, s.X);
Canvas.SetTop(s.Rect, s.Y);
}
if (!(mycanvas.Children.Contains(snk.Rect)))
{
mycanvas.Children.Add(snk.Rect);
}
}
}
}
public static void Display(this Apple apple)
{
Console.SetCursorPosition(apple.X, apple.Y);
Console.Write("@");
}
static void Play(int sizeX, int sizeY, int speed, bool loop)
{
int score = 0;
//Initialize playing area
InitUi(sizeX, sizeY);
//Create snake from snake.cs and set it's bounds so it dies when is leaves the play area
var snake = new Snake(sizeX, sizeY)
{
Loop = loop
};
//Create a new thread to take in and pass controls to the snake, start it.
var controlThread = new Thread(() => Controls(snake,
Key.Up,
Key.Down,
Key.Left,
Key.Right));
controlThread.SetApartmentState(ApartmentState.STA);
controlThread.Start();
//Make new apples until Apple is not inside of snake
var apple = new Apple(sizeX, sizeY);
while (snake.IsTouching(apple.X, apple.Y))
{
apple = new Apple(sizeX, sizeY);
}
DateTime sinceLastTick = DateTime.Now;
Thread.Sleep(500);
int ticks = 0;
while (!snake.Dead)
{
if (DateTime.Now - sinceLastTick > TimeSpan.FromMilliseconds(1000 / speed))
{
sinceLastTick = DateTime.Now;
snake.Tick();
}
//If snake isn't touching apple, skip back to start of while loop
if (!snake.IsTouching(apple.X, apple.Y))
{
continue;
}
//If it is touching apple
snake.Length++;
//Add to the score based on a basic algorithm taking into account size of play area and speed
score += (int)Math.Ceiling((speed ^ 2 * 1000) / Math.Sqrt(sizeX * sizeY / 2));
//Update the score's display value
ShowScore(sizeY, score);
while (snake.IsTouching(apple.X, apple.Y))
{
//Write snake body to Apples previous location
Console.SetCursorPosition(apple.X, apple.Y);
Console.Write("O");
//Spawn new apple
apple = new Apple(sizeX, sizeY);
}
ticks += 1;
}
//Stop controls thread.
controlThread.Abort();
Console.CursorTop = Console.WindowHeight / 2;
ConsoleWrite.WriteCentered("Game Over");
PostStats(new [] { loop ? 1 : 0, score, snake.Length - 4, ticks });
}
public GameEngine()
{
this.Snake = new Snake();
this.currentApple = GenerateApple();
}
