public override ConfirmedDirection GetDirection()
{
IDirectionChosen directionTowardsPlayer = this.Monster.DetermineDirectionTowardsPlayer();
if (!(directionTowardsPlayer is ConfirmedDirection))
{
bool notPossibleToGoInDirectionTowardsPlayer = !this.Monster.ConfirmDirectionToMoveIn(directionTowardsPlayer, out ConfirmedDirection feasibleDirection);
if (notPossibleToGoInDirectionTowardsPlayer || feasibleDirection == Direction.None)
{
return(feasibleDirection);
}
}
// we know at this point that we could move in DirectionTowardsPlayer HOWEVER we don't want to actually step onto the same tile as the player
TilePos potentiallyMovingTowards = this.Monster.TilePosition.GetPositionAfterOneMove(directionTowardsPlayer.Direction);
if (potentiallyMovingTowards != GlobalServices.GameState.Player.TilePosition)
{
// it's okay. we'll be closer to the player without actually touching the player
return(directionTowardsPlayer.Confirm());
}
var directionAwayFromPlayer = MonsterMovement.AlterDirectionByVeeringAway(directionTowardsPlayer.Direction);
this.Monster.ConfirmDirectionToMoveIn(directionAwayFromPlayer, out ConfirmedDirection result);
return(result);
}
/// <summary>
/// Checks whether the monster can move in the specified direction.
/// If it can't, it will try other directions in turn until it finds a direction that is available.
/// </summary>
/// <param name="m">The monster that is moving</param>
/// <param name="intendedDirection">The direction the monster hopes to move in</param>
/// <param name="feasibleDirection">The direction the monster can move in, or Direction.None if it's unable to move</param>
/// <returns>True if the monster can move in the intendedDirection, or False otherwise</returns>
public static bool ConfirmDirectionToMoveIn(this Monster m, IDirectionChosen intendedDirection, out ConfirmedDirection feasibleDirection)
{
if (intendedDirection.Direction == Direction.None)
{
feasibleDirection = ConfirmedDirection.None;
return(true);
}
if (intendedDirection is ConfirmedDirection confirmedDirection)
{
feasibleDirection = confirmedDirection;
return(true);
}
if (m.CanMoveInDirection(intendedDirection.Direction))
{
feasibleDirection = intendedDirection.Confirm();
return(true);
}
var directionToTry = new PossibleDirection(intendedDirection.Direction);
for (int i = 0; i < 3; i++)
{
directionToTry = GetNextDirection(directionToTry);
if (m.CanMoveInDirection(directionToTry.Direction))
{
feasibleDirection = directionToTry.Confirm();
return(false);
}
}
feasibleDirection = ConfirmedDirection.None;
return(false);
}
protected ConfirmedDirection GetConfirmedDirection(IDirectionChosen selectedDirection)
{
if (selectedDirection is ConfirmedDirection || selectedDirection.Direction == Direction.None)
{
return(selectedDirection.Confirm());
}
this.Monster.ConfirmDirectionToMoveIn(selectedDirection, out ConfirmedDirection feasibleDirection);
return(feasibleDirection);
}