private bool StartRotation(GridCube.Direction direction)
{
Vector3 rotation;
switch (direction)
{
case GridCube.Direction.UP:
rotation = new Vector3(-1, 0, 0);
break;
case GridCube.Direction.DOWN:
rotation = new Vector3(1, 0, 0);
break;
case GridCube.Direction.LEFT:
rotation = new Vector3(0, -1, 0);
break;
case GridCube.Direction.RIGHT:
rotation = new Vector3(0, 1, 0);
break;
default:
Debug.LogWarning("Unable to rotate grid!");
return(false);
}
rotationDirection = rotation;
startTime = Time.time;
lastVal = 0;
isRotating = true;
return(true);
}
private bool AreOpposite(GridCube.Direction a, GridCube.Direction b)
{
if ((a == GridCube.Direction.DOWN && b == GridCube.Direction.UP) ||
(a == GridCube.Direction.UP && b == GridCube.Direction.DOWN))
{
return(true);
}
if ((a == GridCube.Direction.RIGHT && b == GridCube.Direction.LEFT) ||
(a == GridCube.Direction.LEFT && b == GridCube.Direction.RIGHT))
{
return(true);
}
return(false);
}
public MoveResult MoveHead(GridCube.Direction direction)
{
if (isRotating)
{
return(MoveResult.ROTATING);
}
GridCube next = SnakeHead().GetNextCube(direction, out var changedSide);
if (next == null)
{
next = FindSnakeBound(SnakeHead());
changedSide = false;
if (next == null)
{
return(MoveResult.ERROR);
}
}
if (next.IsSnake() || next.IsHole())
{
return(MoveResult.DIED);
}
if (changedSide)
{
bool ok = StartRotation(direction);
return(ok ? MoveResult.ROTATING : MoveResult.ERROR);
}
bool ateApple = next.IsApple();
next.SetCubeState(GridCube.CubeState.SNAKE);
snake.AddFirst(next);
GridCube last = snake.Last.Value;
if (!ateApple)
{
last.SetCubeState(GridCube.CubeState.EMPTY);
snake.RemoveLast();
return(MoveResult.MOVED);
}
return(MoveResult.ATE);
}
void Update()
{
if (!playing)
{
return;
}
GridCube.Direction dir = ReadInput();
if (dir == GridCube.Direction.NONE || AreOpposite(dir, lastMovedDirection))
{
dir = lastDirection;
}
if (lastResult == GameGrid.MoveResult.ROTATING)
{
dir = lastMovedDirection;
}
lastDirection = dir;
lastInputTime += Time.deltaTime * speed;
if (lastInputTime > inputCoolDown)
{
lastInputTime = 0;
GameGrid.MoveResult result = gameGrid.MoveHead(dir);
if (result == GameGrid.MoveResult.MOVED || result == GameGrid.MoveResult.ATE)
{
lastMovedDirection = dir;
}
switch (result)
{
case GameGrid.MoveResult.DIED:
playing = false;
int topScore = PlayerPrefs.GetInt("TopScore", 0);
if (score > topScore)
{
PlayerPrefs.SetInt("TopScore", score);
}
guiController.RemoveNotifications();
guiController.SetGameOverPanelActive(true);
break;
case GameGrid.MoveResult.ERROR:
Debug.Log("An error occured.");
gameObject.SetActive(false);
break;
case GameGrid.MoveResult.ATE:
gameGrid.PlaceNewApple();
if (rotationEnabled && Random.value < NEW_HOLE_PROBABILITY)
{
gameGrid.PlaceNewHole();
}
//TODO: Win if no more space is available
speed += speedFactor;
score++;
guiController.SetScore(score);
inputCoolDown -= COOLDOWN_STEP;
if (inputCoolDown < MIN_INPUT_COOLDOWN)
{
inputCoolDown = MIN_INPUT_COOLDOWN;
}
break;
case GameGrid.MoveResult.ROTATING:
default:
// pass
break;
}
lastResult = result;
}
}
