private void ReviewDirectionFaced()
{
var patrol = this._tank.DetermineDirection as PatrolPerimeter;
if (patrol == null || patrol.IsDetached)
{
this._desiredRotation = 0m;
return;
}
if (!this._tank.CurrentMovement.IsMoving)
{
return;
}
var tileMovingTowards = TilePos.TilePosFromPosition(this._tank.CurrentMovement.MovingTowards);
using (var directionList = PatrolPerimeter.GetPreferredDirections(this._tank.CurrentMovement.Direction, patrol.CurrentAttachmentToWall).GetEnumerator())
{
directionList.MoveNext();
var preferredDirection = directionList.Current;
var tileAroundCorner = tileMovingTowards.GetPositionAfterOneMove(preferredDirection);
if (CouldMoveTo(tileAroundCorner))
{
this._desiredRotation = RotationForDirection[preferredDirection];
return;
}
directionList.MoveNext();
var currentDirection = directionList.Current;
directionList.MoveNext();
var directionAwayFromWall = directionList.Current;
var tileAwayFromWall = this._tank.TilePosition.GetPositionAfterOneMove(directionAwayFromWall);
if (CouldMoveTo(tileAwayFromWall))
{
this._desiredRotation = RotationForDirection[directionAwayFromWall];
return;
}
directionList.MoveNext();
var backwards = directionList.Current;
var tileAhead = tileMovingTowards.GetPositionAfterOneMove(currentDirection);
if (CouldMoveTo(tileAhead))
{
this._desiredRotation = RotationForDirection[currentDirection];
return;
}
this._desiredRotation = RotationForDirection[backwards];
}
}
public void TestPatrolPerimeterDirection()
{
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Left, PatrolPerimeter.AttachmentToWall.FollowWallOnLeft).SequenceEqual(new[] { Direction.Down, Direction.Left, Direction.Up, Direction.Right }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Up, PatrolPerimeter.AttachmentToWall.FollowWallOnLeft).SequenceEqual(new[] { Direction.Left, Direction.Up, Direction.Right, Direction.Down }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Right, PatrolPerimeter.AttachmentToWall.FollowWallOnLeft).SequenceEqual(new[] { Direction.Up, Direction.Right, Direction.Down, Direction.Left }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Down, PatrolPerimeter.AttachmentToWall.FollowWallOnLeft).SequenceEqual(new[] { Direction.Right, Direction.Down, Direction.Left, Direction.Up }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Left, PatrolPerimeter.AttachmentToWall.FollowWallOnRight).SequenceEqual(new [] { Direction.Up, Direction.Left, Direction.Down, Direction.Right }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Up, PatrolPerimeter.AttachmentToWall.FollowWallOnRight).SequenceEqual(new[] { Direction.Right, Direction.Up, Direction.Left, Direction.Down }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Right, PatrolPerimeter.AttachmentToWall.FollowWallOnRight).SequenceEqual(new[] { Direction.Down, Direction.Right, Direction.Up, Direction.Left }));
Assert.IsTrue(PatrolPerimeter.GetPreferredDirections(Direction.Down, PatrolPerimeter.AttachmentToWall.FollowWallOnRight).SequenceEqual(new[] { Direction.Left, Direction.Down, Direction.Right, Direction.Up }));
}