// SnakeFood constructor.
public SnakeFood(List <SnakePart> snakeParts, List <SnakeFood> snakeFoods)
{
int foodSize = snakeParts[0].ElementSize;
bool isAvailable = false;
List <Point> occupiedPoints = new List <Point>();
foreach (SnakePart snakePart in snakeParts)
{
occupiedPoints.Add(snakePart.CurrentPosition);
}
foreach (SnakeFood snakeFood in snakeFoods)
{
occupiedPoints.Add(snakeFood.CurrentPosition);
}
// Draw coordinates of a snake food point.
this.ElementSize = foodSize;
Random random = new Random();
int randomX, randomY;
// Check if the snake food point is the same as one of the snake parts points.
// or one of other snake foods points. If yes, draw again
do
{
randomX = random.Next(0, 24) * 20;
randomY = random.Next(0, 24) * 20;
this.CurrentPosition = new Point(randomX, randomY);
isAvailable = SnakeFood.CheckPointAvailability(occupiedPoints, this.CurrentPosition);
}while (!isAvailable);
}
// Check if the snake ate food method.
public bool Check()
{
// Assign the first element of the snake parts list
// which is always the snake's head.
SnakePart snakeHead = _snakeParts[0];
foreach (SnakeFood snakeFood in _snakeFoods)
{
if (snakeHead.CurrentPosition == snakeFood.CurrentPosition)
{
_eatenSnakeFood = snakeFood;
return(true);
}
}
return(false);
}
// Behavior if snake ate food.
public void Eaten(Canvas gameBoard, int maxSnakeSpeed, ref int score, ref DispatcherTimer timer, string foodImagePath)
{
// Increment score.
score++;
// Increase a snake speed.
int timeInterval = Math.Max((10000000 - score * 500000), maxSnakeSpeed);
timer.Interval = new TimeSpan(timeInterval);
// Delete the eaten food element.
gameBoard.Children.Remove(_eatenSnakeFood.ElementRepresentation);
_snakeFoods.Remove(_eatenSnakeFood);
// Create a new food element.
SnakeFood newSnakeFood = new SnakeFood(_snakeParts, _snakeFoods);
_snakeFoods.Add(newSnakeFood);
newSnakeFood.Paint(gameBoard, foodImagePath);
}
