private Command GetBestNavigateCommand(Ship ship, Position drop)
{
// new logic, path of least resistance
var polr = Navigation.CalculatePathOfLeastResistance(ship.position, drop);
if (Safety.IsCompletelySafeMove(ship, polr[0].position.GetDirectionTo(ship.position)))
{
var best = polr[0].position.GetDirectionTo(ship.position);
return(ship.Move(best, "Moving from path of least resistance2"));
}
// old logic, pick any safe direction
List <Direction> directions = drop.GetAllDirectionsTo(ship.position);
if (directions.All(x => Map.At(ship, x).IsOccupiedByOpponent || (Map.At(ship, x).IsThreatened) && !Map.At(ship, x).IsMyStructure))
{
directions = DirectionExtensions.ALL_DIRECTIONS.ToList(); // add all
}
directions = directions.OrderBy(d => Map.At(ship, d).IsOpponentsStructure&& Map.At(ship, d).IsThreatened ? ship.halite * 3 :
Map.At(ship, d).IsThreatened || Map.At(ship, d).IsOccupiedByOpponent ? ship.halite - Map.At(ship, d).SmallestEnemyValue :
Map.At(ship, d).IsOccupiedByMe ? Map.At(ship, d).halite * .45 :
ship.CellHalite * .1).ToList();
foreach (var d in directions)
{
if (Safety.IsSafeMove(ship, d))
{
return(ship.Move(d, "moving to dropoff"));
}
}
if (Safety.IsCompletelySafeMove(ship, Direction.STILL))
{
return(ship.StayStill("staying still because nothing else available..."));
}
return(null);
}
public override void CommandShips()
{
// see if we can disrupt an opponent
foreach (var s in Fleet.AvailableShips)
{
var occupiedNeighbors = s.CurrentMapCell.Neighbors.Where(n => n.IsOccupiedByOpponent && !EnemyFleet.IsReturningHome(n.ship));
MapCell bestMove = null;
double best = 0.0;
foreach (var n in occupiedNeighbors)
{
var zone = new Zone(n.position, 5);
if (zone.SafetyRatio < MyBot.HParams[Parameters.SAFETY_RATIO])
{
continue;
}
if (GameInfo.MyShipsCount * 1.1 < GameInfo.OpponentShipsCount)
{
continue;
}
if (n.halite < s.CellHalite)
{
continue;
}
if (GameInfo.LowestNeighboringOpponentHalite(n) < s.halite)
{
continue;
}
if (Safety.IsSafeMove(s, n))
{
var val = (n.halite * .25 + n.ship.halite) - (s.CellHalite * .25 + s.halite);
if (val > best)
{
bestMove = n;
best = val;
}
}
}
if (bestMove != null)
{
Fleet.AddMove(s.Move(bestMove, "trying to disrupt opponent from Combat logic"));
}
}
}
public override void CommandShips()
{
var list = new List <Projection>();
Fleet.AvailableShips.ForEach(s => list.Add(new Projection(s)));
list = list.OrderBy(p => p.numTurns).ToList();
while (list.Count > 0)
{
// switch next to a ship on a dropoff if it's surrounded
var next = list[0];
foreach (var proj in list.Where(l => l.ship.OnDropoff))
{
if (proj.ship.Neighbors.All(n => Fleet.CollisionCells.Contains(n) || n.IsOccupied()))
{
next = proj;
break;
}
}
var s = next.ship;
if (next.valuer.TurnsToFill(s, ValueMapping.IsPreviousTarget(s.Id, next.valuer.Target.position)) != next.numTurns)
{
list[list.IndexOf(next)] = new Projection(s);
list.OrderBy(p => p.numTurns);
continue;
}
Command move;
if (!s.CanMove)
{
move = s.StayStill("Ship cannot move, forcing it to stay still... Target " + next.valuer.Target.position.ToString() + "... Expected Turns: " + next.numTurns);
}
else if (!(s.CurrentMapCell.Neighbors.Any(n => n.halite > GameInfo.UpperThirdAverage && n.halite > s.CellHalite * MyBot.HParams[Parameters.STAY_MULTIPLIER])) &&
s.CellHalite > GameInfo.UpperThirdAverage && Safety.IsSafeMove(s, Direction.STILL))
{
move = s.StayStill("Forcing ship to sit still... Target " + next.valuer.Target.position.ToString() + "... Expected Turns: " + next.numTurns);
}
else
{
move = next.GetMove();
}
DoMove(move, next.valuer.Target, next.ship.Id);
list.Remove(next);
}
}
public bool ShouldMineInsteadOfDropoff(Ship ship, List <Ship> bucket, Dictionary <Position, List <Ship> > buckets)
{
// verified...
if (ship.CellHalite < 10)
{
return(false);
}
if (ship.CellHalite * .15 + ship.halite > 1000)
{
return(false);
}
if (ship.CurrentMapCell.IsThreatened)
{
return(false);
}
if (!Safety.IsSafeMove(ship, Direction.STILL))
{
return(false);
}
if (!MyBot.ShouldSpawnShip(0) && MyBot.ShouldSpawnShip(ship.halite) /* and not 2 ships same dist from drop */)
{
return(false);
}
if (bucket.Count > 1 && bucket[1].DistanceToMyDropoff - 1 <= ship.DistanceToMyDropoff)
{
return(false);
}
foreach (var b in buckets.Where(x => x.Value != bucket))
{
if (b.Value.First().DistanceToMyDropoff <= ship.DistanceToMyDropoff)
{
return(false);
}
}
return(true);
}
public override void CommandShips()
{
var prevShipAssignments = ShipAssignments;
var prevPointAssignments = PointAssignments;
ShipAssignments = new Dictionary <Ship, Assignment>();
PointAssignments = new Dictionary <Point, Assignment>();
// stay still...
foreach (var s in Fleet.AvailableShips.Where(s => !s.CanMove))
{
Fleet.AddMove(s.StayStill("Ship cannot move, forcing it to stay still..."));
}
// select targets
Queue <Ship> queue = new Queue <Ship>();
Fleet.AvailableShips.ForEach(s => queue.Enqueue(s));
while (queue.Count > 0)
{
var s = queue.Dequeue();
var xLayers = GameInfo.RateLimitXLayers(15);
var cells = GameInfo.Map.GetXLayers(s.position, xLayers);
MapCell target = s.CurrentMapCell;
int maxVal = GetCellValue(s, target);
do
{
foreach (var c in cells)
{
var otherAssign = PointAssignments.ContainsKey(c.position.AsPoint) ? PointAssignments[c.position.AsPoint] : null;
if (otherAssign != null && GameInfo.Distance(s, c.position) >= otherAssign.Distance)
{
continue;
}
// value calculation...
int val = GetCellValue(s, c);
if (prevPointAssignments.ContainsKey(c.position.AsPoint) && prevPointAssignments[c.position.AsPoint].Ship.Id == s.Id)
{
val = (int)(val * 1.1);
}
int distDiff = GameInfo.Distance(s, c.position) - GameInfo.Distance(s, target.position);
int oppCost = distDiff < 0 ? distDiff * (int)(c.halite * .125) : // cell is closet to ship than curTarget
distDiff * (int)(target.halite * .125); // distDiff is 0/positive, cell is further than curTarget
if (val - oppCost > maxVal && Navigation.IsAccessible(s.position, c.position))
{
maxVal = val;
target = c;
}
}
xLayers++;
cells = GameInfo.GetXLayersExclusive(s.position, xLayers);
} while(target == null && xLayers <= Math.Min(GameInfo.Map.width, GameInfo.RateLimitXLayers(xLayers)));
if (target != null)
{
var otherTarget = AssignAndReturnPrevAssignIfAny(s, target);
if (otherTarget != null)
{
queue.Enqueue(otherTarget.Ship);
}
}
}
var vals = ShipAssignments.Values.OrderBy(a => a.Distance);
foreach (var a in vals)
{
var dirs = a.Target.position.GetAllDirectionsTo(a.Ship.position);
dirs = dirs.OrderBy(d => GameInfo.CellAt(a.Ship, d).halite).ToList();
if (dirs.Any(d => Safety.IsSafeMove(a.Ship, d)))
{
var dir = dirs.First(d => Safety.IsSafeMove(a.Ship, d));
Fleet.AddMove(a.Ship.Move(dir, $"Moving to best target {a.Target.position.ToString()} End Game Collect Logic"));
}
}
}
public override void CommandShips()
{
// go through buckets and move the ships...
var dropoffBuckets = GetBuckets(AvailableShipsMovingToBase);
var ShipPositions = new List <List <Ship> >();
for (int i = 0; i < GameInfo.Map.width * 2; i++)
{
ShipPositions.Add(new List <Ship>());
}
if (dropoffBuckets.Any(kvp => kvp.Key.Equals(GameInfo.Me.shipyard.position)))
{
var yardDrop = dropoffBuckets.Single(kvp => kvp.Key.Equals(GameInfo.Me.shipyard.position));
foreach (var s in yardDrop.Value)
{
var dist = GameInfo.Distance(s, yardDrop.Key);
ShipPositions[dist].Add(s);
}
// iterate....
bool frontOccupied = false;
for (int i = 0; i < ShipPositions.Count; i++)
{
if (ShipPositions[i].Count >= 1)
{
var ships = ShipPositions[i];
ships = ships.OrderByDescending(s => s.halite).ToList();
foreach (var s in ships)
{
if (frontOccupied && !s.IsFull() && s.CellHalite >= 10)
{
Fleet.AddMove(s.StayStill("Mining halite because I can"));
Safety.TwoTurnAvoider.Add(s, s.CurrentMapCell, yardDrop.Key.GetAllDirectionsTo(s.CurrentMapCell));
}
else
{
var cmd = GetBestNavigateCommand(s, yardDrop.Key);
if (cmd != null)
{
Fleet.AddMove(cmd);
Safety.TwoTurnAvoider.Add(s, cmd.TargetCell, yardDrop.Key.GetAllDirectionsTo(cmd.TargetCell));
}
}
frontOccupied = true;
}
}
frontOccupied = ShipPositions[i].Count > 0;
}
// remove the key
dropoffBuckets.Remove(yardDrop.Key);
}
foreach (var drop in dropoffBuckets.Keys)
{
var ships = dropoffBuckets[drop].OrderBy(s => Map.CalculateDistance(s.position, drop) * 10000 - s.halite).ToList();
int maxDist = 0;
foreach (var ship in ships)
{
int thisDist = Map.CalculateDistance(ship.position, drop);
if (ShouldMineInsteadOfDropoff(ship, ships, dropoffBuckets))
{
Fleet.AddMove(ship.StayStill("Mining halite because I can"));
Safety.TwoTurnAvoider.Add(ship, ship.CurrentMapCell, drop.GetAllDirectionsTo(ship.CurrentMapCell));
}
else if (thisDist > maxDist || ship.CellHalite < 10 || !Safety.IsSafeMove(ship, Direction.STILL))
{
var cmd = GetBestNavigateCommand(ship, drop);
if (cmd != null)
{
Fleet.AddMove(cmd);
Safety.TwoTurnAvoider.Add(ship, cmd.TargetCell, drop.GetAllDirectionsTo(cmd.TargetCell));
}
}
else
{
Fleet.AddMove(ship.StayStill($"Staying still to stagger ships"));
Safety.TwoTurnAvoider.Add(ship, ship.CurrentMapCell, drop.GetAllDirectionsTo(ship.CurrentMapCell));
}
maxDist = Math.Max(maxDist, thisDist);
}
}
}
