private void MoveSnakeBody()
{
Point part = new Point();
if (SnakeParts.Count() > 1)
{
foreach (Image image in SnakeParts)
{
if (image == SnakeParts.First())
{
}
else if (image == SnakeParts[1])
{
part = new Point(Canvas.GetLeft(SnakeParts[1]), Canvas.GetTop(SnakeParts[1]));
Canvas.SetLeft(SnakeParts[1], Canvas.GetLeft(SnakeParts.First()));
Canvas.SetTop(SnakeParts[1], Canvas.GetTop(SnakeParts.First()));
}
else
{
Point tempPos = new Point(Canvas.GetLeft(image), Canvas.GetTop(image));
Canvas.SetLeft(image, part.X);
Canvas.SetTop(image, part.Y);
part = tempPos;
}
}
}
}
public void Grow()
{
double newTailX = SnakeParts[SnakeParts.Count - 1].Position.X;
double newTailY = SnakeParts[SnakeParts.Count - 1].Position.Y;
switch (SnakeDirection)
{
case SnakeDirection.Left:
newTailX -= Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Right:
newTailX += Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Up:
newTailY -= Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Down:
newTailY += Constants.SNAKESQUARESIZE;
break;
}
//Adding new tail to the snake to simulate its growth
ISnakePart newTail = Factory.CreateSnakePart();
newTail.Position = new Point(newTailX, newTailY);
SnakeParts.Add(newTail);
}
private void GenerateSnakePart()
{
Point last = new Point(Canvas.GetLeft(SnakeParts.Last()), Canvas.GetTop(SnakeParts.Last()));
Image snakePart = new Image
{
Source = new BitmapImage(new Uri(_colorPath)),
Height = _height,
Width = _height
};
SnakeParts.Add(snakePart);
switch (SnakeDriection)
{
case Direction.Right:
last.X -= 20;
break;
case Direction.Left:
last.X += 20;
break;
case Direction.Up:
last.Y += 20;
break;
case Direction.Down:
last.Y -= 20;
break;
}
Canvas.SetTop(snakePart, last.Y);
Canvas.SetLeft(snakePart, last.X);
_playField.Children.Add(snakePart);
}
public void GenerateSnake()
{
Image snakeHead = new Image
{
Source = new BitmapImage(new Uri(_colorPath))
};
snakeHead.Height = _height;
snakeHead.Width = _height;
SnakeParts.Add(snakeHead);
_playField.Children.Add(snakeHead);
}
private void CheckSnake()
{
foreach (Image part in SnakeParts)
{
if (part != SnakeParts.First())
{
if (Canvas.GetTop(part) == _posY && Canvas.GetLeft(part) == _posX)
{
StopGame();
}
}
}
}
//Constructor for new snake used at the beginning of each game
public SnakeObject()
{
//Snake initially always consists of 3 tiles, the tile at position 0 is snakes head
//Snake is initially positioned in the center of game area
SnakeParts.Add(new SnakePart(isHead: true)
{
Position = new Point(Constants.SNAKESQUARESIZE * 11, Constants.SNAKESQUARESIZE * 10),
});
SnakeParts.Add(new SnakePart()
{
Position = new Point(Constants.SNAKESQUARESIZE * 10, Constants.SNAKESQUARESIZE * 10)
});
SnakeParts.Add(new SnakePart()
{
Position = new Point(Constants.SNAKESQUARESIZE * 9, Constants.SNAKESQUARESIZE * 10)
});
}
//Updating snake parts positions after each time interval to simulate movement
public void UpdatePartsPositions()
{
double newHeadX = SnakeParts[0].Position.X;
double newHeadY = SnakeParts[0].Position.Y;
//Checking movement direction to determine where to position head
switch (SnakeDirection)
{
case SnakeDirection.Left:
newHeadX -= Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Right:
newHeadX += Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Up:
newHeadY -= Constants.SNAKESQUARESIZE;
break;
case SnakeDirection.Down:
newHeadY += Constants.SNAKESQUARESIZE;
break;
}
ISnakePart newHead = new SnakePart(isHead: true)
{
Position = new Point()
{
X = newHeadX,
Y = newHeadY
}
};
//Changing old head tile to become body part
SnakeParts[0].SwitcHeadToBody();
//Inserting new head at the beginning of the snake
SnakeParts.Insert(0, newHead);
//Removing snakes tail
SnakeParts.RemoveAt(SnakeParts.Count - 1);
}
// zum pruefen einer kollision mit dem Schlangenkopf
private void ProofCollision()
{
//HitTestResult collAplle = VisualTreeHelper.HitTest(playground, myApple.GetPosition());
HitTestResult hitted = VisualTreeHelper.HitTest(playground, snake[0].GetPosition());
if (hitted != null)
{
string name = ((Shape)hitted.VisualHit).Name;
// was haben wir getroffen?
if (name == "Border")
{
sound = new SoundPlayer(Properties.Resources.gameOver);
sound.Play();
EndGame();
}
if (name == "Hitbox" || name == "Snake")
{
ProgressBarLife.Value -= 1;
if (ProgressBarLife.Value <= 0)
{
sound = new SoundPlayer(Properties.Resources.gameOver);
sound.Play();
EndGame();
}
damageCount = 0;
damageDone = false;
timerLoseLife.Start();
sound = new SoundPlayer(Properties.Resources.damage);
sound.Play();
return;
}
if (name == "Apple")
{
Apples.ClearSnakePartsList();
for (int index = 1; index < snake.Count; index++)
{
Apples.SetSnakePartsPosition(snake[index].GetPosition());
}
points = gamePoints.VeraenderePunkte(addPoints);
showPoints.Content = points;
ProgressBarLife.Value += 0.1;
sound = new SoundPlayer(Properties.Resources.bite);
sound.Play();
// Geschwindigkeit der Schlange erhoehen, wenn nicht das Maximum schon erreicht ist
if (points % 50 == 0 && speedSnake > 100)
{
speedSnake -= 100;
timerSnake.Interval = TimeSpan.FromMilliseconds(speedSnake);
if (speedUp)
{
oldSpeedSnake -= 100;
}
}
if (points % 100 == 0)
{
sound = new SoundPlayer(Properties.Resources.speedPlusOne);
sound.Play();
ProgressBarSpeed.Value += 1;
}
// einen teil hinten in der Schlange anhaengen
SnakeParts sPart = new SnakeParts(new Point(snake[snake.Count - 1].GetOldPosition().X, snake[snake.Count - 1].GetOldPosition().Y + snake[snake.Count - 1].GetSize()), Colors.Black);
snake.Add(sPart);
// den alten Apfel loeschen
myApple.RemoveApple(playground);
// einen neuen Apfel erzeugen
myApple = new Apples(appleSize);
myApple.ShowApple(playground, pillarWidth);
if (points == levelPoints && _counterLevel < 3)
{
levelPoints *= 2;
GameBreak();
sound = new SoundPlayer(Properties.Resources.nextLevel);
sound.Play();
_counterLevel++;
MessageBox.Show($"Glückwunsch! \nDu hast Level { _counterLevel } erreicht!", "Next Level!", MessageBoxButton.OK, MessageBoxImage.Information);
NextLevel();
}
}
}
}
