/// <summary>
/// Creates a new ball. Ball class must be initialised by calling Ball.Initialise or an exception is thrown.
/// </summary>
/// <param name="colour">The colour of the ball. Is clamped to a valid colour.</param>
/// <param name="position">The position of the ball.</param>
public Ball(BallColour colour, Vector2 position)
{
if (sColours.Count <= 0)
throw new Exception("Textures not initialized");
mColour = (BallColour)MathHelper.Clamp((float)colour, 0, sColours.Count - 1);
mOrigin = sSize * 0.5f;
mState = BallState.Still;
mDirection = Vector2.Zero;
mPosition = position;
}
/// <summary>
/// Creates a new ball. Ball class must be initialised by calling Ball.Initialise or an exception is thrown.
/// </summary>
/// <param name="colour">The colour of the ball. Is clamped to a valid colour.</param>
/// <param name="position">The position of the ball.</param>
public Ball(BallColour colour, Vector2 position)
{
if (sColours.Count <= 0)
{
throw new Exception("Textures not initialized");
}
mColour = (BallColour)MathHelper.Clamp((float)colour, 0, sColours.Count - 1);
mOrigin = sSize * 0.5f;
mState = BallState.Still;
mDirection = Vector2.Zero;
mPosition = position;
}
/// <summary>
/// Increase or decrease, as indicated by the increase parameter, the number of balls of a certain
/// colour, specified by the parameter colour, that is still in play.
/// </summary>
/// <param name="colour">The colour of the added or removed ball.</param>
/// <param name="wasAdded">Whether a ball of the specified was added or removed. True if it was
/// added, else false.</param>
private void ChangeNumberOfBalls(BallColour colour, bool wasAdded)
{
// Based on whether the ball was added or removed, update the colours in play and the total number of
// balls in the game variables.
int modifier = 0;
if (wasAdded)
{
modifier = 1;
}
else
{
modifier = -1;
}
mColoursInPlay[(int)colour] += modifier;
mNumberOfBalls += modifier;
}
