void gameTimer_OnTick()
{
if (IsValidNextMove() == true && gameLost == false && gameWon == false)
{
snake.MoveSnake();
SnakePart sp = snake.GetSnakeHead();
NPC currentNPC = level.GetNPC(sp.PositionOnX, sp.PositionOnY);
Notify(this);
}
else
{
Lost();
}
}
public bool CheckTail()
{
SnakePart snakeHead = SnakeHead;
if (snakeHead != null)
{
foreach (var snakeEl in SnakeElements.Where(x => !x.Head))
{
if (snakeEl.X == snakeHead.X && snakeEl.Y == snakeHead.Y)
{
return(true);
}
}
}
return(false);
}
private bool IsValidNextMove()
{
SnakeDirection currentDirection = snake.Direction;
SnakePart currentSnakeHead = snake.GetSnakeHead();
MapCell currentMapCell = level.LevelMap.GetMapCell(currentSnakeHead.PositionOnX, currentSnakeHead.PositionOnY);
MapCell nextMapCell = null;
switch (currentDirection)
{
case SnakeDirection.Up:
nextMapCell = new MapCell(currentMapCell.PositionOnX, currentMapCell.PositionOnY - 1);
break;
case SnakeDirection.Down:
nextMapCell = new MapCell(currentMapCell.PositionOnX, currentMapCell.PositionOnY + 1);
break;
case SnakeDirection.Left:
nextMapCell = new MapCell(currentMapCell.PositionOnX - 1, currentMapCell.PositionOnY);
break;
case SnakeDirection.Right:
nextMapCell = new MapCell(currentMapCell.PositionOnX + 1, currentMapCell.PositionOnY);
break;
default:
return(false);
}
if (nextMapCell.PositionOnX < 0 || nextMapCell.PositionOnY >= level.LevelMap.MapRows ||
nextMapCell.PositionOnY < 0 || nextMapCell.PositionOnX >= level.LevelMap.MapColumns)
{
return(false);
}
if (snake.Contain(new SnakePart(nextMapCell.PositionOnX, nextMapCell.PositionOnY)) == true)
{
return(false);
}
nextMapCell = level.LevelMap.GetMapCell(nextMapCell.PositionOnX, nextMapCell.PositionOnY);
if (nextMapCell.CellType == MapCellType.Block)
{
return(false);
}
return(true);
}
internal void MoveSnake()
{
SnakePart head = SnakeElements[0];
SnakePart tail = SnakeElements[SnakeElements.Count - 1];
SnakeTail = new SnakePart(elemenetSize)
{
X = tail.X,
Y = tail.Y
};
head.Head = false;
tail.Head = true;
tail.X = head.X;
tail.Y = head.Y;
switch (Direction)
{
case Direction.Up:
tail.Y -= elemenetSize;
break;
case Direction.Down:
tail.Y += elemenetSize;
break;
case Direction.Left:
tail.X -= elemenetSize;
break;
case Direction.Right:
tail.X += elemenetSize;
break;
}
SnakeElements.RemoveAt(SnakeElements.Count - 1);
SnakeElements.Insert(0, tail);
}
public void MoveSnake()
{
SnakePart currentHeadPosition = bodyParts.ElementAt(HEAD_INDEX);
SnakePart newHeadPosition;
switch (direction)
{
case SnakeDirection.Up:
newHeadPosition = new SnakePart(currentHeadPosition.PositionOnX, currentHeadPosition.PositionOnY - 1);
break;
case SnakeDirection.Down:
newHeadPosition = new SnakePart(currentHeadPosition.PositionOnX, currentHeadPosition.PositionOnY + 1);
break;
case SnakeDirection.Left:
newHeadPosition = new SnakePart(currentHeadPosition.PositionOnX - 1, currentHeadPosition.PositionOnY);
break;
case SnakeDirection.Right:
newHeadPosition = new SnakePart(currentHeadPosition.PositionOnX + 1, currentHeadPosition.PositionOnY);
break;
default:
newHeadPosition = currentHeadPosition;
break;
}
bodyParts.Insert(HEAD_INDEX, newHeadPosition);
bodyParts.RemoveAt(bodyParts.Count - 1);
if (waitingParts.Count > 0)
{
if (bodyParts.Contains(waitingParts.Peek()) == false)
{
bodyParts.Add(waitingParts.Dequeue());
}
}
}
public void AddSnakePart(int x, int y)
{
SnakePart newSnakePart = new SnakePart(x, y);
waitingParts.Enqueue(newSnakePart);
}
internal bool Contain(SnakePart snakePart)
{
return(bodyParts.Contains(snakePart));
}
public void AddSnakePart(int x, int y)
{
SnakePart newSnakePart = new SnakePart(x, y);
bodyParts.Add(newSnakePart);
}