// I am a bit sad that this method turned out to be responsable for
// managing the whole snake and not just moving it
public bool Move()
{
PosChixel snakeHead = chixelList.First();
PosChixel snakeTail = chixelList.Last();
// Apply movement gotten from the controls to snake
// Why is there a stack here, you ask? Well it's made so that if (between updates) the player presses
// something that causes a change in direction
// then follows it up by something that doesn't, the latest change causing press is applied and not caneled
// this will hopefully make the controls more responsive.
while (deltaDirectionStack.Count != 0)
{
Directions outDirection;
if (!deltaDirectionStack.TryPop(out outDirection))
{
continue;
}
if (DoesDirectionCauseTurn(outDirection))
{
CurrentDirection = outDirection;
break;
}
}
deltaDirectionStack.Clear();
// Change in the position of the head.
(int deltaX, int deltaY) = Utility.DirectionToXY(CurrentDirection);
int newX = snakeHead.x + deltaX;
// Implement looping around the screen like pacman
if (newX > FrameBuffer.Instance.Width - 1)
{
newX = FrameBuffer.Instance.Left;
}
else if (newX < FrameBuffer.Instance.Left)
{
newX = FrameBuffer.Instance.Width - 1;
}
int newY = snakeHead.y + deltaY;
// Implement looping around the screen like pacman
if (newY > FrameBuffer.Instance.Height - 1)
{
newY = FrameBuffer.Instance.Top;
}
else if (newY < FrameBuffer.Instance.Top)
{
newY = FrameBuffer.Instance.Height - 1;
}
// Eat the Growthball if on it;
if (GrowthBall.GrowthBallDict.ContainsKey((newX, newY)))
{
this.Grow(GrowthBall.GrowthBallDict[(newX, newY)].GrowthValue);
GrowthBall.EatAt(newX, newY);
}
public PosChixel(PosChixel other) : this(other.x, other.y, other)
{
}
public static void SetChixel(this FrameBuffer frame, PosChixel posChixel)
{
frame.SetChixel(posChixel.x, posChixel.y, posChixel);
}