public Line <FiringDistance> this[int x, int y, Direction outwardDirection, EdgeOffset edgeOffset = EdgeOffset.Centre]
{
get
{
return(this[new Point((short)x, (short)y), outwardDirection, edgeOffset]);
}
}
// TODO: Cache these offsets
public static Point GetOffsetToPointOnTankEdge(Direction edge, EdgeOffset edgeOffset)
{
Point offsetToCentreOfEdge = Constants.TANK_EXTENT_OFFSET * edge.GetOffset();
Direction perpendicular = Direction.NONE;
int multiplier = 1;
switch (edgeOffset)
{
case EdgeOffset.Centre:
return(offsetToCentreOfEdge);
case EdgeOffset.OffCentreAntiClockwise:
perpendicular = edge.AntiClockwise();
break;
case EdgeOffset.OffCentreClockwise:
perpendicular = edge.Clockwise();
break;
case EdgeOffset.CornerAntiClockwise:
perpendicular = edge.AntiClockwise();
multiplier = 2;
break;
case EdgeOffset.CornerClockwise:
perpendicular = edge.Clockwise();
multiplier = 2;
break;
}
return(offsetToCentreOfEdge + multiplier * perpendicular.GetOffset());
}
private void AddNextFiringLineNodesToQueueForMovementDirAndEdgeOffset(
TwoValuedCircularBuffer <Node> bfsQueue, Direction movementDir, EdgeOffset edgeOffset,
FiringLineSummary firingLineSummary, int distanceToAdd)
{
Line <FiringDistance> firingLine = firingLineSummary.FiringLine;
int nextFiringLineIndex;
for (nextFiringLineIndex = firingLineSummary.IndexOfNextFiringLinePoint;
nextFiringLineIndex < firingLine.Length;
nextFiringLineIndex++)
{
if (nextFiringLineIndex == -1)
{
return;
}
FiringDistance firingDist = firingLine[nextFiringLineIndex];
int nextEdgeWeighting = firingDist.TicksTillTargetShot - 1;
// This distance is the edge weight in the graph.
// The -1 is because we need to compensate for the weight 1 edge added from
// the tank's position + direction on the firing line, to the firing line node.
if (nextEdgeWeighting > distanceToAdd)
{
firingLineSummary.NextEdgeWeighting = nextEdgeWeighting;
firingLineSummary.IndexOfNextFiringLinePoint = nextFiringLineIndex;
return;
}
if (!TurnCalculationCache.CellMatrix[firingDist.StartingTankPosition].IsValid)
{
firingLineSummary.NextEdgeWeighting = Constants.UNREACHABLE_DISTANCE;
firingLineSummary.IndexOfNextFiringLinePoint = -1;
return;
}
Node firingLineNode = new Node(ActionType.FiringLine, movementDir, firingDist.StartingTankPosition,
(byte)nextFiringLineIndex, edgeOffset);
bfsQueue.Add(firingLineNode, nextEdgeWeighting);
}
if (nextFiringLineIndex == firingLine.Length)
{
firingLineSummary.NextEdgeWeighting = Constants.UNREACHABLE_DISTANCE;
firingLineSummary.IndexOfNextFiringLinePoint = -1;
}
}
public Node(ActionType actionType, Direction dir, int x, int y,
byte firingLineIndex = 0, EdgeOffset edgeOffset = EdgeOffset.Centre) : this()
{
MobilityId
= (byte)x
| ((byte)y << YBitShift)
| ((byte)dir << DirBitShift)
| ((byte)actionType << ActionTypeBitShift)
| ((byte)edgeOffset << EdgeOffsetBitShift)
| (firingLineIndex << FiringLineIndexBitShift);
/* Slows down algorithm too much...
* Debug.Assert(ActionType == actionType, "ActionType wrong");
* Debug.Assert(Dir == dir, "Dir wrong");
* Debug.Assert(X == x, "X wrong");
* Debug.Assert(Y == y, "Y wrong");
* Debug.Assert(FiringLineIndex == firingLineIndex, "FiringLineIndex wrong");
* Debug.Assert(EdgeOffset == edgeOffset, "EdgeOffset wrong");
*/
}
public static Point GetPointOnTankEdge(int centreX, int centreY, Direction edge, EdgeOffset edgeOffset)
{
return(GetPointOnTankEdge(new Point((short)centreX, (short)centreY), edge, edgeOffset));
}
public static Point GetPointOnTankEdge(Point centreOfTank, Direction edge, EdgeOffset edgeOffset)
{
return(centreOfTank + GetOffsetToPointOnTankEdge(edge, edgeOffset));
}
public Node(ActionType actionType, MobileState mobileState,
byte firingLineIndex = 0, EdgeOffset edgeOffset = EdgeOffset.Centre)
: this(actionType, mobileState.Dir, mobileState.Pos, firingLineIndex, edgeOffset)
{
}
public Node(ActionType actionType, Direction dir, Point pos,
byte firingLineIndex = 0, EdgeOffset edgeOffset = EdgeOffset.Centre)
: this(actionType, dir, pos.X, pos.Y, firingLineIndex, edgeOffset)
{
}
public Line <FiringDistance> this[Point targetPoint, Direction outwardDirection, EdgeOffset edgeOffset = EdgeOffset.Centre]
{
get
{
Debug.Assert((int)edgeOffset < FiringLineArraySize, "An unsupported edge offset has been requested of a firing line matrix");
Line <FiringDistance>[] firingLinesByEdgeOffset
= directionalMatrixOfFiringLinesByEdgeOffset[outwardDirection, targetPoint];
if (firingLinesByEdgeOffset == null)
{
firingLinesByEdgeOffset = new Line <FiringDistance> [FiringLineArraySize];
}
Line <FiringDistance> firingLine = firingLinesByEdgeOffset[(int)edgeOffset];
if (firingLine == null)
{
Cell targetCell;
switch (ExtentType)
{
case ElementExtentType.TankBody:
targetCell
= TurnCalcationCache.TankLocationMatrix[targetPoint]
.CellsOnEdgeByDirectionAndEdgeOffset[(int)outwardDirection, (int)edgeOffset];
break;
default:
// case ElementExtentType.Point:
targetCell = TurnCalcationCache.CellMatrix[targetPoint];
break;
}
firingLine = FiringDistanceCalculator.GetFiringDistancesToPoint(
targetCell, outwardDirection.GetOpposite() /*movement direction*/,
TurnCalcationCache, GameStateCalculationCache);
}
return(firingLine);
}
}