/// <summary>
/// Sets a power up entity on this game block.
/// </summary>
/// <param name="entity">The power up entity to assign to this block</param>
/// <exception cref="InvalidOperationException">If this block already contains a power up entity</exception>
public void SetPowerUpEntity(IPowerUpEntity entity)
{
if (PowerUpEntity != null && entity != null)
{
throw new InvalidOperationException("Block already contains a power up entity " + PowerUpEntity.ToString());
}
PowerUpEntity = entity;
if (PowerUpEntity != null)
{
PowerUpEntity.Location = _location;
}
}
/// <summary>
/// Applies the power up to the player entity currently on this game block
/// </summary>
/// <exception cref="InvalidOperationException">If there is no player entity on this block</exception>
/// <exception cref="InvalidOperationException">If there is no power up entity on this block</exception>
public void ApplyPowerUp()
{
if (Entity == null || Entity.GetType() != typeof(PlayerEntity))
{
throw new InvalidOperationException("Power up cannot be applied wihout a player present");
}
if (PowerUpEntity == null)
{
throw new InvalidOperationException("There is no power up entity on this game block " + Location);
}
PowerUpEntity.PerformPowerUp((PlayerEntity)Entity);
PowerUpEntity = null;
}
