public static int DistanceTo(int fastShipPosition, int targetFastCoord)
{
var bowDist = FastCoord.Distance(Bow(fastShipPosition), targetFastCoord);
if (bowDist == 0)
{
return(0);
}
var dist = FastCoord.Distance(Coord(fastShipPosition), targetFastCoord);
if (dist == 0)
{
return(0);
}
var sternDist = FastCoord.Distance(Stern(fastShipPosition), targetFastCoord);
if (sternDist == 0)
{
return(0);
}
return(bowDist);
}
public static void Init()
{
if (initialized)
{
return;
}
initialized = true;
FastCoord.Init();
for (int speed = 0; speed <= Constants.MAX_SHIP_SPEED; speed++)
{
for (int orientation = 0; orientation < 6; orientation++)
{
for (int x = 0; x < Constants.MAP_WIDTH; x++)
{
for (int y = 0; y < Constants.MAP_HEIGHT; y++)
{
foreach (var moveCommand in ShipMoveCommands.all)
{
var shipPosition = new ShipPosition(new Coord(x, y), orientation, speed);
var nextPositions = shipPosition.Apply(moveCommand);
if (nextPositions.Count != 2)
{
throw new InvalidOperationException("nextPositions.Count != 2");
}
var fastShipPosition = Create(shipPosition);
var moved = 0u;
for (int phase = 0; phase < nextPositions.Count; phase++)
{
moved = unchecked ((moved << 16) | (uint)Create(nextPositions[phase]));
}
moves[fastShipPosition | ((int)moveCommand << positionBits)] = moved;
}
}
}
}
}
}
public static int Stern(int fastShipPosition)
{
return(FastCoord.Neighbor(Coord(fastShipPosition), (Orientation(fastShipPosition) + 3) % 6));
}
public static int Bow(int fastShipPosition)
{
return(FastCoord.Neighbor(Coord(fastShipPosition), Orientation(fastShipPosition)));
}
public static int Create(int x, int y, int orientation, int speed)
{
return(Create(FastCoord.Create(x, y), orientation, speed));
}
public static int Mine(int fastShipPosition)
{
var backOrientation = (Orientation(fastShipPosition) + 3) % 6;
return(FastCoord.Neighbor(FastCoord.Neighbor(Coord(fastShipPosition), backOrientation), backOrientation));
}
public static ShipPosition ToShipPosition(int fastShipPosition)
{
return(new ShipPosition(FastCoord.ToCoord(Coord(fastShipPosition)), Orientation(fastShipPosition), Speed(fastShipPosition)));
}
public static bool IsInsideMap(int fastShipPosition)
{
return(FastCoord.IsInsideMap(Coord(fastShipPosition)));
}
public int ToFastCoord()
{
return(FastCoord.Create(this));
}
