private void buttonDown_Click(object sender, EventArgs e)
{
Utility.Movements direction = Utility.Movements.down;
freddie.Slither(direction);
textBox1.Text = freddie.GetLocations();
}
public Snake()
{
UserGivenDirection = Utility.Movements.right;
segments = new List<SnakeSegment>();
segments.Add(new SnakeSegment(0, 2, true, false)); // snake head
segments.Add(new SnakeSegment(0, 1, false, false));
segments.Add(new SnakeSegment(0, 0, false, false));
}
public Snake()
{
UserGivenDirection = Utility.Movements.right;
segments = new List <SnakeSegment>();
segments.Add(new SnakeSegment(0, 2, true, false)); // snake head
segments.Add(new SnakeSegment(0, 1, false, false));
segments.Add(new SnakeSegment(0, 0, false, false));
}
public void Slither(Utility.Movements direction = Utility.Movements.same) // TODO: ! Should I return false if snake dies?
{
int snakeLength = segments.Count;
for (int i = snakeLength - 1; i >= 0; i--) // Move each segment starting at END OF TAIL
{
if (!segments[i].IsNew) // move it if not new
{
//segments[i].AnnounceLocation();
if (segments[i].IsHead) // TODO: grow snake when it eats, return false if it dies / true if all is normal
{ // if snake eats then generate new piece of fruit
if (direction == Utility.Movements.same)
direction = this.UserGivenDirection; // use previous direction
this.UserGivenDirection = direction; // store new direction
// TODO: Do move
switch (direction)
{
case Utility.Movements.up:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i].X;
segments[i].Y -= 1;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.down:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i].X;
segments[i].Y += 1;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.left:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X -= 1;
segments[i].Y = segments[i].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.right:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X += 1;
segments[i].Y = segments[i].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
default:
break;
}
}
else // not head
{ // move to same spot as leading segment
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i - 1].X;
segments[i].Y = segments[i - 1].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
}
}
else // was new so it didn't move - mark it not new for next time
{
segments[i].IsNew = false;
}
}
}
public void Slither(Utility.Movements direction = Utility.Movements.same) // TODO: ! Should I return false if snake dies?
{
int snakeLength = segments.Count;
for (int i = snakeLength - 1; i >= 0; i--) // Move each segment starting at END OF TAIL
{
if (!segments[i].IsNew) // move it if not new
{
//segments[i].AnnounceLocation();
if (segments[i].IsHead) // TODO: grow snake when it eats, return false if it dies / true if all is normal
{ // if snake eats then generate new piece of fruit
if (direction == Utility.Movements.same)
{
direction = this.UserGivenDirection; // use previous direction
}
this.UserGivenDirection = direction; // store new direction
// TODO: Do move
switch (direction)
{
case Utility.Movements.up:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i].X;
segments[i].Y -= 1;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.down:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i].X;
segments[i].Y += 1;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.left:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X -= 1;
segments[i].Y = segments[i].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
case Utility.Movements.right:
// TODO: boundary check
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X += 1;
segments[i].Y = segments[i].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
break;
default:
break;
}
}
else // not head
{ // move to same spot as leading segment
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
segments[i].X = segments[i - 1].X;
segments[i].Y = segments[i - 1].Y;
Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);
}
}
else // was new so it didn't move - mark it not new for next time
{
segments[i].IsNew = false;
}
}
}
