Add movement phase order validation logic
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MultiversalDiplomacy/Adjudicate/AdjudicatorHelpers.cs
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93
MultiversalDiplomacy/Adjudicate/AdjudicatorHelpers.cs
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using MultiversalDiplomacy.Orders;
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namespace MultiversalDiplomacy.Adjudicate;
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/// <summary>
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/// Helper class for common operations shared between adjudicators.
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/// </summary>
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internal static class AdjudicatorHelpers
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{
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/// <summary>
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/// Invalidate all orders that do not match a predicate.
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/// </summary>
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/// <param name="predicate">A predicate that invalid orders will fail to match.</param>
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/// <param name="reason">The reason to be given for order invalidation.</param>
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/// <param name="orders">The set of orders to check.</param>
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/// <param name="validOrders">The list of orders that passed the predicate.</param>
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/// <param name="invalidOrders">
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/// A list of order validation results. Orders invalidated by the predicate will be appended
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/// to this list.
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/// </param>
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public static void InvalidateIfNotMatching<OrderType>(
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Func<OrderType, bool> predicate,
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ValidationReason reason,
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ref List<OrderType> orders,
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ref List<OrderValidation> invalidOrders)
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where OrderType : Order
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{
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ILookup<bool, OrderType> results = orders.ToLookup<OrderType, bool>(predicate);
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invalidOrders = invalidOrders
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.Concat(results[false].Select(order => order.Invalidate(reason)))
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.ToList();
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orders = results[true].ToList();
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}
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/// <summary>
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/// Invalidate all orders that are not of an allowed order type.
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/// </summary>
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/// <param name="orders">The set of orders to check.</param>
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/// <param name="validOrderTypes">A list of <see cref="Order"/> types that are allowed.</param>
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/// <param name="validOrders">The list of orders of allowed types.</param>
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/// <param name="invalidOrders">
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/// A list of order validation results. Orders of invalid types will be appended to this list.
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/// </param>
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public static void InvalidateWrongTypes(
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List<Type> validOrderTypes,
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ref List<Order> orders,
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ref List<OrderValidation> invalidOrders)
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{
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List<Type> nonOrderTypes = validOrderTypes
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.Where(t => !t.IsSubclassOf(typeof(Order)))
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.ToList();
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if (nonOrderTypes.Any())
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{
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throw new ArgumentException($"Unknown order type: {nonOrderTypes.Select(t => t.FullName).First()}");
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}
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InvalidateIfNotMatching(
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order => !validOrderTypes.Contains(order.GetType()),
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ValidationReason.InvalidOrderTypeForPhase,
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ref orders,
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ref invalidOrders);
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}
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/// <summary>
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/// Invalidate all orders for units not owned by the ordering power.
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/// </summary>
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/// <param name="orders">The set of orders to check.</param>
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/// <param name="validOrders">The list of orders with valid targets.</param>
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/// <param name="invalidOrders">
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/// A list of order validation results. Orders by the wrong powers will be appended to this list.
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/// </param>
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public static void InvalidateWrongPower(
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List<Order> orders,
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ref List<Order> validOrders,
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ref List<OrderValidation> invalidOrders)
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{
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InvalidateIfNotMatching(
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order => order switch {
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ConvoyOrder convoy => convoy.Power == convoy.Unit.Power,
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DisbandOrder disband => disband.Power == disband.Unit.Power,
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HoldOrder hold => hold.Power == hold.Unit.Power,
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MoveOrder move => move.Power == move.Unit.Power,
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RetreatOrder retreat => retreat.Power == retreat.Unit.Power,
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SupportHoldOrder support => support.Power == support.Unit.Power,
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SupportMoveOrder support => support.Power == support.Unit.Power,
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// Any order not given to a unit by definition cannot be given to a unit of the wrong power
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_ => true,
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},
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ValidationReason.InvalidUnitForPower,
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ref orders,
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ref invalidOrders);
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}
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}
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@ -1,4 +1,5 @@
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using MultiversalDiplomacy.Orders;
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using MultiversalDiplomacy.Model;
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namespace MultiversalDiplomacy.Adjudicate;
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@ -12,11 +13,12 @@ public interface IPhaseAdjudicator
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/// which should be rejected before adjudication. Adjudication should be performed on
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/// all orders in the output for which <see cref="OrderValidation.Valid"/> is true.
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/// </summary>
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/// <param name="world">The global game state.</param>
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/// <param name="orders">Orders to validate for adjudication.</param>
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/// <returns>
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/// A list of order validation results. Note that this list may be longer than the input
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/// list if illegal orders were replaced with hold orders, as there will be an invalid
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/// result for the illegal order and a valid result for the replacement order.
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/// </returns>
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public IEnumerable<OrderValidation> ValidateOrders(IEnumerable<Order> orders);
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public List<OrderValidation> ValidateOrders(World world, List<Order> orders);
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}
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262
MultiversalDiplomacy/Adjudicate/MovementPhaseAdjudicator.cs
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262
MultiversalDiplomacy/Adjudicate/MovementPhaseAdjudicator.cs
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using MultiversalDiplomacy.Model;
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using MultiversalDiplomacy.Orders;
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namespace MultiversalDiplomacy.Adjudicate;
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/// <summary>
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/// Adjudicator for the movement phase.
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/// </summary>
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internal class MovementPhaseAdjudicator : IPhaseAdjudicator
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{
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public List<OrderValidation> ValidateOrders(World world, List<Order> orders)
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{
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// The basic workflow of this function will be to look for invalid orders, remove these
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// from the working set of orders, and then perform one final check for duplicate orders
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// at the end. This is to comply with DATC 4.D.3's requirement that a unit that receives
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// a legal and an illegal order follows the legal order rather than holding.
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List<OrderValidation> validationResults = new List<OrderValidation>();
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// Invalidate any orders that aren't a legal type for this phase and remove them from the
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// working set.
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AdjudicatorHelpers.InvalidateWrongTypes(
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new List<Type>
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{
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typeof(HoldOrder),
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typeof(MoveOrder),
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typeof(ConvoyOrder),
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typeof(SupportHoldOrder),
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typeof(SupportMoveOrder)
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},
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ref orders,
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ref validationResults);
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// Invalidate any orders by a power that were given to another power's units and remove
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// them from the working set.
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AdjudicatorHelpers.InvalidateWrongPower(orders, ref orders, ref validationResults);
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// Since all the order types in this phase are UnitOrders, downcast to get the Unit.
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List<UnitOrder> unitOrders = orders.OfType<UnitOrder>().ToList();
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// Invalidate any order given to a unit in the past.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => !order.Unit.Season.Futures.Any(),
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ValidationReason.IneligibleForOrder,
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ref unitOrders,
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ref validationResults);
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/***************
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* HOLD ORDERS *
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***************/
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// Hold orders are always valid.
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List<HoldOrder> holdOrders = unitOrders.OfType<HoldOrder>().ToList();
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/***************
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* MOVE ORDERS *
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***************/
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// Move order validity is far more complicated, due to multiversal time travel and convoys.
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List<MoveOrder> moveOrders = unitOrders.OfType<MoveOrder>().ToList();
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// Trivial check: armies cannot move to water and fleets cannot move to land.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => (order.Unit.Type == UnitType.Army && order.Location.Type == LocationType.Land)
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|| (order.Unit.Type == UnitType.Fleet && order.Location.Type == LocationType.Water),
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ValidationReason.IllegalDestinationType,
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ref moveOrders,
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ref validationResults);
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// Trivial check: a unit cannot move to where it already is.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => !(order.Location == order.Unit.Location && order.Season == order.Unit.Season),
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ValidationReason.DestinationMatchesOrigin,
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ref moveOrders,
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ref validationResults);
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// If the unit is moving to a valid destination that isn't where it already is, then the
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// move order is valid if there is a path from the origin to the destination. In the easy
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// case, the destination is directly adjacent to the origin with respect to the map, the
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// turn, and the timeline. These moves are valid. Any other move must be checked for
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// potential validity as a convoy move.
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ILookup<bool, MoveOrder> moveOrdersByAdjacency = moveOrders
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.ToLookup(order =>
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// Map adjacency
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order.Unit.Location.Adjacents.Contains(order.Location)
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// Turn adjacency
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&& Math.Abs(order.Unit.Season.Turn - order.Season.Turn) <= 1
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// Timeline adjacency
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&& order.Unit.Season.InAdjacentTimeline(order.Season));
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List<MoveOrder> adjacentMoveOrders = moveOrdersByAdjacency[true].ToList();
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List<MoveOrder> nonAdjacentMoveOrders = moveOrdersByAdjacency[false].ToList();
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// Only armies can move to non-adjacent destinations, since fleets cannot be convoyed.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => order.Unit.Type == UnitType.Army,
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ValidationReason.UnreachableDestination,
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ref nonAdjacentMoveOrders,
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ref validationResults);
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// For all remaining convoyable move orders, check if there is a path between the origin
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// and the destination.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => PathFinder.ConvoyPathExists(world, order),
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ValidationReason.UnreachableDestination,
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ref nonAdjacentMoveOrders,
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ref validationResults);
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/*****************
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* CONVOY ORDERS *
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*****************/
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// A convoy order must be to a fleet and target an army.
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List<ConvoyOrder> convoyOrders = unitOrders.OfType<ConvoyOrder>().ToList();
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => order.Unit.Type == UnitType.Fleet && order.Target.Type == UnitType.Army,
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ValidationReason.InvalidOrderTypeForUnit,
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ref convoyOrders,
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ref validationResults);
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// A convoy for an illegal move is illegal, which means all the move validity checks
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// now need to be repeated for the convoy target.
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// Trivial check: cannot convoy to non-coastal province.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => order.Location.Type == LocationType.Land
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&& order.Location.Province.Locations.Any(loc => loc.Type == LocationType.Water),
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ValidationReason.IllegalDestinationType,
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ref convoyOrders,
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ref validationResults);
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// Trivial check: cannot convoy a unit to its own location
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => !(
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order.Location == order.Target.Location
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&& order.Season == order.Target.Season),
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ValidationReason.DestinationMatchesOrigin,
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ref convoyOrders,
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ref validationResults);
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// By definition, the move enabled by a convoy order is a convoyable move order, so it
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// should be checked for a convoy path.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => PathFinder.ConvoyPathExists(world, order),
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ValidationReason.UnreachableDestination,
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ref convoyOrders,
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ref validationResults);
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/***********************
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* SUPPORT-HOLD ORDERS *
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***********************/
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// Support-hold orders are typically valid if the supporting unit can move to the
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// destination.
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List<SupportHoldOrder> supportHoldOrders = unitOrders.OfType<SupportHoldOrder>().ToList();
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// Support-hold orders are invalid if the unit supports itself.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => order.Unit != order.Target,
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ValidationReason.NoSelfSupport,
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ref supportHoldOrders,
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ref validationResults);
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// Support-hold orders are invalid if the supporting unit couldn't move to the destination
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// without a convoy. This is the same direct adjacency calculation as above, except that
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// the supporting unit only needs to be able to move to the *province*, even if the target
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// is holding in a location within that province that the supporting unit couldn't move to.
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// The reverse is not true: a unit cannot support another province if that province is only
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// reachable from a different location in the unit's province.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order =>
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// Map adjacency with respect to province
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order.Unit.Location.Adjacents.Any(
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adjLocation => adjLocation.Province == order.Target.Location.Province)
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// Turn adjacency
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&& Math.Abs(order.Unit.Season.Turn - order.Target.Season.Turn) <= 1
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// Timeline adjacency
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&& order.Unit.Season.InAdjacentTimeline(order.Target.Season),
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ValidationReason.UnreachableSupport,
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ref supportHoldOrders,
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ref validationResults);
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/***********************
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* SUPPORT-MOVE ORDERS *
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***********************/
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// Support-move orders, like support-hold orders, are typically valid if the supporting
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// unit can move to the destination.
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List<SupportMoveOrder> supportMoveOrders = unitOrders.OfType<SupportMoveOrder>().ToList();
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// Support-move orders are invalid if the unit supports a move to any location in its own
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// province.
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order => order.Unit.Location.Province != order.Location.Province,
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ValidationReason.NoSupportMoveAgainstSelf,
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ref supportMoveOrders,
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ref validationResults);
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// Support-move orders, like support-hold orders, are valid only if the supporting unit
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// can reach the destination *province* of the move, even if the destination *location*
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// is unreachable (DATC 6.B.4). The same is not true of reachability from another location
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// in the supporting unit's province (DATC 6.B.5).
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AdjudicatorHelpers.InvalidateIfNotMatching(
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order =>
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// Map adjacency with respect to province
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order.Unit.Location.Adjacents.Any(
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adjLocation => adjLocation.Province == order.Location.Province)
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// Turn adjacency
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&& Math.Abs(order.Unit.Season.Turn - order.Season.Turn) <= 1
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// Timeline adjacency
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&& order.Unit.Season.InAdjacentTimeline(order.Season),
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ValidationReason.UnreachableSupport,
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ref supportMoveOrders,
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ref validationResults);
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// One more edge case: support-move orders by a fleet for an army are illegal if that army
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// requires a convoy and the supporting fleet is a part of the only convoy path (DATC
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// 6.D.31).
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// TODO: support convoy path check with "as if this fleet were missing"
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// Collect the valid orders together
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unitOrders =
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holdOrders.Cast<UnitOrder>()
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.Concat(adjacentMoveOrders)
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.Concat(nonAdjacentMoveOrders)
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.Concat(convoyOrders)
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.Concat(supportHoldOrders)
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.Concat(supportMoveOrders)
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.ToList();
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// DATC 4.D.3 prefers that multiple orders to the same unit in the same order set be
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// replaced by a hold order. Since this function only takes one combined list of orders,
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// it is assumed that the caller has combined the order sets from all powers in a way that
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// is compliant with DATC 4.D.1-2. If there are still duplicate orders in the input, they
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// were not addressed by 4.D.1-2 and will be handled according to 4.D.3, i.e. replaced with
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// hold orders. Note that this happens last, after all other invalidations have been
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// applied in order to comply with what 4.D.3 specifies about illegal orders.
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List<Unit> duplicateOrderedUnits = unitOrders
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.GroupBy(o => o.Unit)
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.Where(orderGroup => orderGroup.Count() > 1)
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.Select(orderGroup => orderGroup.Key)
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.ToList();
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List<UnitOrder> duplicateOrders = unitOrders
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.Where(o => duplicateOrderedUnits.Contains(o.Unit))
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.ToList();
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List<UnitOrder> validOrders = unitOrders.Except(duplicateOrders).ToList();
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validationResults = validationResults
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.Concat(duplicateOrders.Select(o => o.Invalidate(ValidationReason.DuplicateOrders)))
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.Concat(validOrders.Select(o => o.Validate(ValidationReason.Valid)))
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.ToList();
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// Finally, add implicit hold orders for units without legal orders.
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List<Unit> allOrderableUnits = world.Units
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.Where(unit => !unit.Season.Futures.Any())
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.ToList();
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HashSet<Unit> orderedUnits = validOrders.Select(order => order.Unit).ToHashSet();
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List<Unit> unorderedUnits = allOrderableUnits
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.Where(unit => !orderedUnits.Contains(unit))
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.ToList();
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List<HoldOrder> implicitHolds = unorderedUnits
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.Select(unit => new HoldOrder(unit.Power, unit))
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.ToList();
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validationResults = validationResults
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.Concat(implicitHolds.Select(o => o.Validate(ValidationReason.Valid)))
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.ToList();
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return validationResults;
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}
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}
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108
MultiversalDiplomacy/Adjudicate/PathFinder.cs
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108
MultiversalDiplomacy/Adjudicate/PathFinder.cs
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@ -0,0 +1,108 @@
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using MultiversalDiplomacy.Model;
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using MultiversalDiplomacy.Orders;
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namespace MultiversalDiplomacy.Adjudicate;
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/// <summary>
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/// Helper class encapsulating the convoy pathfindind code.
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/// </summary>
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public static class PathFinder
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{
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/// <summary>
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/// Determines if a convoy path exists for a move in a convoy order.
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/// </summary>
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public static bool ConvoyPathExists(World world, ConvoyOrder order)
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=> ConvoyPathExists(world, order.Target, order.Location, order.Season);
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/// <summary>
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/// Determines if a convoy path exists for a move order.
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/// </summary>
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public static bool ConvoyPathExists(World world, MoveOrder order)
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=> ConvoyPathExists(world, order.Unit, order.Location, order.Season);
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private static bool ConvoyPathExists(
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World world,
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Unit movingUnit,
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Location unitLocation,
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Season unitSeason)
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{
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// A convoy path exists between two locations if both are land locations in provinces that
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// also have coasts, and between those coasts there is a path of adjacent sea provinces
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// (not coastal) that are occupied by fleets. The move order is valid even if the fleets
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// belong to another power or were not given convoy orders; it will simply fail.
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IDictionary<(Location location, Season season), Unit> fleets = world.Units
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.Where(unit => unit.Type == UnitType.Fleet)
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.ToDictionary(unit => (unit.Location, unit.Season));
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// Verify that the origin is a coastal province.
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if (movingUnit.Location.Type != LocationType.Land) return false;
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IEnumerable<Location> originCoasts = movingUnit.Location.Province.Locations
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.Where(location => location.Type == LocationType.Water);
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if (!originCoasts.Any()) return false;
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// Verify that the destination is a coastal province.
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if (unitLocation.Type != LocationType.Land) return false;
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IEnumerable<Location> destCoasts = unitLocation.Province.Locations
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.Where(location => location.Type == LocationType.Water);
|
||||
if (!destCoasts.Any()) return false;
|
||||
|
||||
// Seed the to-visit set with the origin coasts. Coastal locations will be filtered out of
|
||||
// locations added to the to-visit set, but the logic will still work with these as
|
||||
// starting points.
|
||||
Queue<(Location location, Season season)> toVisit = new(
|
||||
originCoasts.Select(location => (location, unitSeason)));
|
||||
HashSet<(Location, Season)> visited = new();
|
||||
|
||||
// Begin pathfinding.
|
||||
while (toVisit.Any())
|
||||
{
|
||||
// Visit the next point in the queue.
|
||||
(Location currentLocation, Season currentSeason) = toVisit.Dequeue();
|
||||
visited.Add((currentLocation, currentSeason));
|
||||
|
||||
var adjacents = GetAdjacentPoints(currentLocation, currentSeason);
|
||||
foreach ((Location adjLocation, Season adjSeason) in adjacents)
|
||||
{
|
||||
// If the destination is adjacent, then a path exists.
|
||||
if (destCoasts.Contains(adjLocation) && unitSeason == adjSeason) return true;
|
||||
|
||||
// If not, add this location to the to-visit set if it isn't a coast, has a fleet,
|
||||
// and hasn't already been visited.
|
||||
if (!adjLocation.Province.Locations.Any(l => l.Type == LocationType.Land)
|
||||
&& fleets.ContainsKey((adjLocation, adjSeason))
|
||||
&& !visited.Contains((adjLocation, adjSeason)))
|
||||
{
|
||||
toVisit.Enqueue((adjLocation, adjSeason));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// If the destination was never reached, then no path exists.
|
||||
return false;
|
||||
}
|
||||
|
||||
private static List<(Location, Season)> GetAdjacentPoints(Location location, Season season)
|
||||
{
|
||||
List<(Location, Season)> adjacentPoints = new();
|
||||
List<Location> adjacentLocations = location.Adjacents.ToList();
|
||||
List<Season> adjacentSeasons = season.GetAdjacentSeasons().ToList();
|
||||
|
||||
foreach (Location adjacentLocation in adjacentLocations)
|
||||
{
|
||||
adjacentPoints.Add((adjacentLocation, season));
|
||||
}
|
||||
foreach (Season adjacentSeason in adjacentSeasons)
|
||||
{
|
||||
adjacentPoints.Add((location, adjacentSeason));
|
||||
}
|
||||
foreach (Location adjacentLocation in adjacentLocations)
|
||||
{
|
||||
foreach (Season adjacentSeason in adjacentSeasons)
|
||||
{
|
||||
adjacentPoints.Add((adjacentLocation, adjacentSeason));
|
||||
}
|
||||
}
|
||||
|
||||
return adjacentPoints;
|
||||
}
|
||||
}
|
||||
@ -18,7 +18,52 @@ public enum ValidationReason
|
||||
IllegalOrderReplacedWithHold = 2,
|
||||
|
||||
/// <summary>
|
||||
/// Another order was submitted that replaced this order.
|
||||
/// The power that issued this order does not control the ordered unit.
|
||||
/// </summary>
|
||||
SupersededByLaterOrder = 3,
|
||||
InvalidUnitForPower = 3,
|
||||
|
||||
/// <summary>
|
||||
/// The ordered unit received conflicting orders and all orders were invalidated.
|
||||
/// </summary>
|
||||
DuplicateOrders = 4,
|
||||
|
||||
/// <summary>
|
||||
/// An army was ordered into the sea or a fleet was ordered onto the land.
|
||||
/// </summary>
|
||||
IllegalDestinationType = 5,
|
||||
|
||||
/// <summary>
|
||||
/// A unit was ordered to move to where it already is.
|
||||
/// </summary>
|
||||
DestinationMatchesOrigin = 6,
|
||||
|
||||
/// <summary>
|
||||
/// The destination of the move is not reachable from the origin.
|
||||
/// </summary>
|
||||
UnreachableDestination = 7,
|
||||
|
||||
/// <summary>
|
||||
/// The order type is not valid for the unit.
|
||||
/// </summary>
|
||||
InvalidOrderTypeForUnit = 8,
|
||||
|
||||
/// <summary>
|
||||
/// A unit was ordered to support itself.
|
||||
/// </summary>
|
||||
NoSelfSupport = 9,
|
||||
|
||||
/// <summary>
|
||||
/// A unit was ordered to support a location it could not reach.
|
||||
/// </summary>
|
||||
UnreachableSupport = 10,
|
||||
|
||||
/// <summary>
|
||||
/// A unit was ordered to support a move to its own province.
|
||||
/// </summary>
|
||||
NoSupportMoveAgainstSelf = 11,
|
||||
|
||||
/// <summary>
|
||||
/// A unit was ordered that is not currently eligible to receive orders.
|
||||
/// </summary>
|
||||
IneligibleForOrder = 12,
|
||||
}
|
||||
@ -44,12 +44,24 @@ public class Season
|
||||
/// </summary>
|
||||
private TimelineFactory Timelines { get; }
|
||||
|
||||
/// <summary>
|
||||
/// Future seasons created directly from this season.
|
||||
/// </summary>
|
||||
public IEnumerable<Season> Futures => this.FutureList;
|
||||
private List<Season> FutureList { get; }
|
||||
|
||||
private Season(Season? past, int turn, int timeline, TimelineFactory factory)
|
||||
{
|
||||
this.Past = past;
|
||||
this.Turn = turn;
|
||||
this.Timeline = timeline;
|
||||
this.Timelines = factory;
|
||||
this.FutureList = new();
|
||||
|
||||
if (past != null)
|
||||
{
|
||||
past.FutureList.Add(this);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
@ -89,6 +101,9 @@ public class Season
|
||||
|
||||
/// <summary>
|
||||
/// Returns whether this season is in an adjacent timeline to another season.
|
||||
/// Seasons are considered to be in adjacent timelines if they are in the same timeline,
|
||||
/// one is in a timeline that branched from the other's timeline, or both are in timelines
|
||||
/// that branched from the same point.
|
||||
/// </summary>
|
||||
public bool InAdjacentTimeline(Season other)
|
||||
{
|
||||
@ -106,4 +121,55 @@ public class Season
|
||||
// Both branched off of the same point
|
||||
|| thisRoot.Past == otherRoot.Past;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns all seasons that are adjacent to this season.
|
||||
/// </summary>
|
||||
public IEnumerable<Season> GetAdjacentSeasons()
|
||||
{
|
||||
List<Season> adjacents = new();
|
||||
|
||||
// The immediate past and all immediate futures are adjacent.
|
||||
if (this.Past != null) adjacents.Add(this.Past);
|
||||
adjacents.AddRange(this.FutureList);
|
||||
|
||||
// Find all adjacent timelines by finding all timelines that branched off of this season's
|
||||
// timeline, i.e. all futures of this season's past that have different timelines. Also
|
||||
// include any timelines that branched off of the timeline this timeline branched off from.
|
||||
List<Season> adjacentTimelineRoots = new();
|
||||
Season? current;
|
||||
for (current = this;
|
||||
current?.Past?.Timeline != null && current.Past.Timeline == current.Timeline;
|
||||
current = current.Past)
|
||||
{
|
||||
adjacentTimelineRoots.AddRange(
|
||||
current.FutureList.Where(s => s.Timeline != current.Timeline));
|
||||
}
|
||||
|
||||
// At the end of the for loop, if this season is part of the first timeline, then current
|
||||
// is the root season (current.past == null); if this season is in a branched timeline,
|
||||
// then current is the branch timeline's root season (current.past.timeline !=
|
||||
// current.timeline). There are co-branches if this season is in a branched timeline, since
|
||||
// the first timeline by definition cannot have co-branches.
|
||||
if (current?.Past != null)
|
||||
{
|
||||
IEnumerable<Season> cobranchRoots = current.Past.FutureList
|
||||
.Where(s => s.Timeline != current.Timeline && s.Timeline != current.Past.Timeline);
|
||||
adjacentTimelineRoots.AddRange(cobranchRoots);
|
||||
}
|
||||
|
||||
// Walk up all alternate timelines to find seasons within one turn of this season.
|
||||
foreach (Season timelineRoot in adjacentTimelineRoots)
|
||||
{
|
||||
for (Season? branchSeason = timelineRoot;
|
||||
branchSeason != null && branchSeason.Turn <= this.Turn + 1;
|
||||
branchSeason = branchSeason.FutureList
|
||||
.FirstOrDefault(s => s?.Timeline == branchSeason.Timeline, null))
|
||||
{
|
||||
if (branchSeason.Turn >= this.Turn - 1) adjacents.Add(branchSeason);
|
||||
}
|
||||
}
|
||||
|
||||
return adjacents;
|
||||
}
|
||||
}
|
||||
|
||||
39
MultiversalDiplomacy/Model/World.cs
Normal file
39
MultiversalDiplomacy/Model/World.cs
Normal file
@ -0,0 +1,39 @@
|
||||
namespace MultiversalDiplomacy.Model;
|
||||
|
||||
/// <summary>
|
||||
/// The global game state.
|
||||
/// </summary>
|
||||
public class World
|
||||
{
|
||||
/// <summary>
|
||||
/// The game map.
|
||||
/// </summary>
|
||||
public IEnumerable<Province> Provinces { get; }
|
||||
|
||||
/// <summary>
|
||||
/// The game powers.
|
||||
/// </summary>
|
||||
public IEnumerable<Power> Powers { get; }
|
||||
|
||||
/// <summary>
|
||||
/// The state of the multiverse.
|
||||
/// </summary>
|
||||
public IEnumerable<Season> Seasons { get; }
|
||||
|
||||
/// <summary>
|
||||
/// All units in the multiverse.
|
||||
/// </summary>
|
||||
public IEnumerable<Unit> Units { get; }
|
||||
|
||||
public World(
|
||||
IEnumerable<Province> provinces,
|
||||
IEnumerable<Power> powers,
|
||||
IEnumerable<Season> seasons,
|
||||
IEnumerable<Unit> units)
|
||||
{
|
||||
this.Provinces = provinces;
|
||||
this.Powers = powers;
|
||||
this.Seasons = seasons;
|
||||
this.Units = units;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user