/// <summary>
/// Get a random Vertical Direction value (Up or Down).
/// </summary>
/// <returns>Direction value</returns>
public static Direction GetRandomVerticalDirection()
{
// Will give values 0-1 inclusive; we don't want 2, 3, 4.
return(DirectionUtils.GetRandomDirection(0, 2));
}
/// <summary>
/// Get a random Direction value that isn't Direction.Random.
/// </summary>
/// <returns>Direction value</returns>
public static Direction GetRandomDirection()
{
// Will give values 0-3 inclusive; we don't want 4 (random)
return(DirectionUtils.GetRandomDirection(0, 4));
}
/// <summary>
/// Get a random Horizontal Direction value (Left or Right).
/// </summary>
/// <returns>Direction value</returns>
public static Direction GetRandomHorizontalDirection()
{
// Will give values 2-3 inclusive; we don't want 0, 1, 4.
return(DirectionUtils.GetRandomDirection(2, 4));
}
/// <summary>
/// Spawn a new MovableObject on the board.
/// </summary>
private void Spawn()
{
// Determine movement direction of the new MovableObject
Direction objectMovementDirection = this.SpawnDirection;
if (objectMovementDirection == Direction.Random)
{
objectMovementDirection = DirectionUtils.GetRandomDirection();
}
// Determine the turning direction of the new MovableObject
Direction objectTurnDirection = GameSettings.TurnDirection;
if (objectTurnDirection == Direction.Random)
{
objectTurnDirection = DirectionUtils.GetRandomHorizontalDirection();
}
// Calculate the starting cell based on the movement direction
int objectStartCol = this.CellCol;
int objectStartRow = this.CellRow;
switch (objectMovementDirection)
{
case Direction.Up:
objectStartRow--;
break;
case Direction.Down:
objectStartRow++;
break;
case Direction.Right:
objectStartCol++;
break;
case Direction.Left:
objectStartCol--;
break;
default:
throw new Exception(String.Format("Spawner is using an unknown or invalid Direction value: {0}", objectMovementDirection));
}
// Determine if this is a positive or negative object
int objectScore = GameSettings.ObjectScore;
if (GameSettings.RANDOM.NextDouble() <= GameSettings.ProbabilityOfNegativeSpawn)
{
objectScore = GameSettings.NegativeObjectScore;
}
MovableObject newObject = new MovableObject(objectStartCol, objectStartRow, objectMovementDirection, objectTurnDirection, objectScore, GameSettings.CellsPerMove);
if (this.ObjectSpawnedHandler != null)
{
this.ObjectSpawnedHandler(newObject, null);
}
this.SpawnedObjects.Add(newObject);
}