private List <Point> GetPoints(Compass direction, Point zeroLocation, int distance)
{
return(Enumerable
.Range(1, distance)
.Select(offset => new {
sign = CompassMapping.GetDirectionSign(direction),
offset = CompassMapping.GetDirectionOffset(direction, (uint)offset)
})
.Select(p => zeroLocation + (p.offset * p.sign)).ToList());
}
/// <summary>
///
/// </summary>
/// <param name="state"></param>
public void UpdateMap(TankState state)
{
var cardinalMapping = CompassMapping.GetCompassMap(state.CardinalDirection);
var directions = new[] {
Direction.Front, Direction.Back,
Direction.Left, Direction.Right
};
foreach (var tankSide in directions)
{
var isTargetInSight =
tankSide == Direction.Front ? (bool?)state.TargetInSight : null;
var cardinalDirection = cardinalMapping[tankSide];
_compassMap[cardinalDirection](state.CurrentPosition, isTargetInSight, state[tankSide]);
}
}
public static void PerformAction(TankAction action)
{
var apiAction = default(System.Action);
switch (action)
{
case TankAction.FireCannon:
apiAction = API.FireCannon;
break;
case TankAction.MoveForward:
apiAction = API.MoveForward;
_currentPosition = _currentPosition +
CompassMapping.GetDirectionSign(_currentDirection) *
CompassMapping.GetDirectionOffset(_currentDirection, (uint)1);
break;
case TankAction.MoveBackward:
apiAction = API.MoveBackward;
var oppsiteDirection = CompassMapping.GetOppositeDirection(_currentDirection);
_currentPosition = _currentPosition +
CompassMapping.GetDirectionSign(oppsiteDirection) *
CompassMapping.GetDirectionOffset(oppsiteDirection, (uint)1);
break;
case TankAction.TurnLeft:
apiAction = API.TurnLeft;
_currentDirection = CompassMapping.GetNewDirection(
_currentDirection, Compass.West);
break;
case TankAction.TurnRight:
apiAction = API.TurnRight;
_currentDirection = CompassMapping.GetNewDirection(
_currentDirection, Compass.East);
break;
case TankAction.TryToShoot:
apiAction = () => {
if (CurrentState.TargetInSight)
{
API.FireCannon();
}
};
break;
default:
apiAction = null;
break;
}
if (apiAction == null)
{
throw new ApplicationException(string.Format("Unknown TankAction: {0}", (int)action));
}
TankAPI.ConsumeTurn(apiAction);
}
