//Update the current game state (on start of tick)
private RiftGame UpdateGameState(RiftGame gameState)
{
Log("Updating gamestate");
gameState.MyPlatinum = int.Parse(ReadLine()); // my available Platinum
Log($"Current platinum: {gameState.MyPlatinum}");
//Update all the zones
for (int i = 0; i < gameState.AmountOfZones; i++)
{
string[] inputs = ReadLine().Split(' ');
int zId = int.Parse(inputs[0]); // this zone's ID
var zone = gameState.GetZone(zId);
int? oldOwner = zone.OwningPlayerID;
zone.OwningPlayerID = int.Parse(inputs[1]); // the player who owns this zone (-1 otherwise)
zone.OwningPlayerID = zone.OwningPlayerID < 0 ? null : zone.OwningPlayerID; //Keep null
zone.AmountPodsPlayer0 = int.Parse(inputs[2]); // player 0's PODs on this zone
zone.AmountPodsPlayer1 = int.Parse(inputs[3]); // player 1's PODs on this zone
zone.AmountPodsPlayer2 = int.Parse(inputs[4]); // player 2's PODs on this zone (always 0 for a two player game)
zone.AmountPodsPlayer3 = int.Parse(inputs[5]); // player 3's PODs on this zone (always 0 for a two or three player game)
if (zone.OwningPlayerID != oldOwner)
{
Log($"Ownership of zone {zone.NodeIndex} changed from {oldOwner} to {zone.OwningPlayerID}");
}
}
return(gameState);
}
private void LogRepresentation(RiftGame game)
{
var podNodes = game.GetZonesWithMyPods().ToList();
var controlNodes = game.GetZonesUnderMyControl().ToList();
Log($"Current statistics: {podNodes.Count} with myNodes, {controlNodes.Count} under control");
}
// **** Status readers
//Read game state/parameters (init)
private RiftGame GetGameFromInitialInput()
{
var game = new RiftGame();
string[] inputs = ReadLine().Split(' ');
game.AmountOfPlayers = int.Parse(inputs[0]); // the amount of players (2 to 4)
game.MyPlayerID = int.Parse(inputs[1]); // my player ID (0, 1, 2 or 3)
game.AmountOfZones = int.Parse(inputs[2]); // the amount of zones on the map
game.AmountOfZoneLinks = int.Parse(inputs[3]); // the amount of links between all zones
//Read nodes
for (int i = 0; i < game.AmountOfZones; i++)
{
inputs = ReadLine().Split(' ');
RiftZone rz = new RiftZone()
{
NodeIndex = int.Parse(inputs[0]),
PlatimumSource = int.Parse(inputs[1])
};
game.AddOrReplaceZone(rz);
}
//Link nodes
for (int i = 0; i < game.AmountOfZoneLinks; i++)
{
inputs = ReadLine().Split(' ');
var z1 = game.GetZone(int.Parse(inputs[0]));
var z2 = game.GetZone(int.Parse(inputs[1]));
z1.LinkedNodes.Add(z2);
z2.LinkedNodes.Add(z1);
}
return(game);
}
private IEnumerable <PodMovement> GetMovements(RiftGame game)
{
var controlledZones = game.GetZonesUnderMyControl();
foreach (var z in controlledZones)
{
var movableInZone = z.GetAmountMovable(game.MyPlayerID);
Log($"Can move {movableInZone} from zone {z.NodeIndex}");
if (!(movableInZone > 0))
{
continue;
}
//Find the node to move to
var moveTo = z.LinkedNodes.FirstOrDefault(zz => zz.OwningPlayerID != game.MyPlayerID)
?? z.LinkedNodes.FirstOrDefault();
if (moveTo != null)
{
Log($"Moving {movableInZone} to {moveTo.NodeIndex}");
yield return(new PodMovement()
{
Amount = movableInZone.Value,
ZoneOrigin = z.NodeIndex,
ZoneDestination = moveTo.NodeIndex
});
}
}
}
private string GenerateMovementString(RiftGame game)
{
/*Rules for moving:
* A POD (or group of PODs) can only make one move per game round.
* A POD can only move from one zone to a contiguous zone – either neutral, already owned or owned by an enemy.
* A POD located on a zone where a fight is ongoing – meaning a zone with enemy PODs on it – can only move to a neutral zone or a zone he/she owns. Simply put, a POD that flees a fight can only retreat on a zone which does not belong to an enemy.
*/
/*
* Line 1: a series of movement commands. A movement command is composed of 3 integers podsCount zoneOrigin zoneDestination that indicate the number of PODs to move from one zone to another.
* For example 4 2 1 3 2 6 = two commands: moving four PODs from zone 2 to zone 1 and moving three PODs from zone 2 to 6.
* Just write WAIT if you do not wish to make any movements.
*/
int maxPodToPurchase = game.MyPlatinum / 20;
var movements = GetMovements(game).ToList();
if (!movements.Any())
{
Log("No movements"); return("WAIT");
}
Log($"Found {movements.Count()} movements");
movements.ForEach(m => Log(m));
return(string.Join(" ", movements.Select(p => p.GetOutputString())));
}
private IEnumerable <PodPurchase> GetPurchases(RiftGame game, int maxAmount)
{
int amountAvailable = maxAmount;
Log($"Platimum to buy {amountAvailable} pods");
//Populate neutral zones
var neutralZones = GetNeutralZonesForMoves(game).ToList();
Log($"Found {neutralZones.Count()} neutralzones");
//While we can get nodes that are neutral
while (amountAvailable > 0 && neutralZones.Any())
{
//Pick a random node, because otherwise we will start populating in the left top
var neutralZone = GetRandomFromCollection(neutralZones);
amountAvailable--;
yield return(new PodPurchase()
{
Amount = 1,
Zone = neutralZone.NodeIndex
});
neutralZone.AddPodsForPlayer(game.MyPlayerID, 1); //Update the temporary count
//Check if there are still zones
neutralZones = GetNeutralZonesForMoves(game).ToList();
}
if (amountAvailable > 0)
{
Log("Still platinum available after populating empty nodes to purchase!");
}
//Check if we need to strengthen our outer defenses (zones that are mine, but are next to empty or enemy nodes)
var zonesToStrengthen = game.GetZonesUnderMyControl().Where(z => z.LinkedNodes.Any(l => l.OwningPlayerID != game.MyPlayerID));
Log($"Found {zonesToStrengthen.Count()} zones to strengthen");
foreach (var zoneToStrengthen in zonesToStrengthen)
{
if (amountAvailable <= 0)
{
break;
}
amountAvailable--;
yield return(new PodPurchase()
{
Amount = 1,
Zone = zoneToStrengthen.NodeIndex
});
zoneToStrengthen.AddPodsForPlayer(game.MyPlayerID, 1); //Update the temporary count
}
}
private string GeneratePurchaseString(RiftGame game)
{
/* Rules for buying:
* Each player can buy as many troops as their Platinum stock allows. A war POD costs 20 Platinum bars.
* A freshly bought POD can only be placed on a neutral zone or on a zone owned by the buyer.
*/
/*
* Line 2: a series of purchase commands. A purchase command is composed of 2 integers podsCount zoneDestination that indicate the number of PODs to add to a zone.
* For example 2 32 1 11 = two commands: buy two PODs for zone 32 and buy one POD for zone 11.
* Just write WAIT if you do not want to buy anything.
*/
int maxPodToPurchase = game.MyPlatinum / 20;
var purchases = GetPurchases(game, maxPodToPurchase).ToList();
if (!purchases.Any())
{
return("WAIT");
}
Log($"Found {purchases.Count()} purchases");
purchases.ForEach(p => Log(p));
return(string.Join(" ", purchases.Select(p => p.GetOutputString())));
}
private IEnumerable <RiftZone> GetNeutralZonesForMoves(RiftGame game)
{
//Get elements that are neutral and not yet have nodes of me (this can happen if the nodes were set by the randomize function,
//this will not de-queue them from the default list, since ownership transfers after the tick)
return(game.GetAllZones().Where(z => z.OwningPlayerID == null && z.GetAmountPodsForPlayer(game.MyPlayerID) <= 0));
}
