747 lines
22 KiB
C#
747 lines
22 KiB
C#
using SpaceGame.Simulation.Api.Contracts;
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namespace SpaceGame.Simulation.Api.Simulation;
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public sealed class SimulationEngine
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{
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public WorldDelta Tick(SimulationWorld world, float deltaSeconds, long sequence)
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{
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var events = new List<SimulationEventRecord>();
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UpdateStations(world, deltaSeconds, events);
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foreach (var ship in world.Ships)
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{
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var previousPosition = ship.Position;
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var previousState = ship.State;
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var previousBehavior = ship.DefaultBehavior.Kind;
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var previousTask = ship.ControllerTask.Kind;
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RefreshControlLayers(ship);
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PlanControllerTask(ship, world);
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var controllerEvent = UpdateControllerTask(ship, world, deltaSeconds);
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AdvanceControlState(ship, controllerEvent);
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ship.Velocity = ship.Position.Subtract(previousPosition).Divide(deltaSeconds);
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TrackHistory(ship);
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EmitShipStateEvents(ship, previousState, previousBehavior, previousTask, controllerEvent, events);
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}
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world.GeneratedAtUtc = DateTimeOffset.UtcNow;
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return new WorldDelta(
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sequence,
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world.TickIntervalMs,
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world.GeneratedAtUtc,
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false,
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events,
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BuildNodeDeltas(world),
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BuildStationDeltas(world),
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BuildShipDeltas(world),
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BuildFactionDeltas(world));
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}
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public WorldSnapshot BuildSnapshot(SimulationWorld world, long sequence)
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{
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PrimeDeltaBaseline(world);
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return new WorldSnapshot(
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world.Label,
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world.Seed,
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sequence,
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world.TickIntervalMs,
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world.GeneratedAtUtc,
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world.Systems.Select((system) => new SystemSnapshot(
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system.Definition.Id,
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system.Definition.Label,
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ToDto(system.Position),
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system.Definition.StarKind,
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system.Definition.StarCount,
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system.Definition.StarColor,
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system.Definition.StarSize,
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system.Definition.Planets.Select((planet) => new PlanetSnapshot(
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planet.Label,
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planet.PlanetType,
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planet.Shape,
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planet.MoonCount,
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planet.OrbitRadius,
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planet.OrbitSpeed,
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planet.OrbitEccentricity,
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planet.OrbitInclination,
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planet.OrbitLongitudeOfAscendingNode,
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planet.OrbitArgumentOfPeriapsis,
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planet.OrbitPhaseAtEpoch,
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planet.Size,
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planet.Color,
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planet.HasRing)).ToList())).ToList(),
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world.Nodes.Select(ToNodeDelta).Select((node) => new ResourceNodeSnapshot(
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node.Id,
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node.SystemId,
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node.Position,
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node.SourceKind,
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node.OreRemaining,
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node.MaxOre,
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node.ItemId)).ToList(),
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world.Stations.Select(ToStationDelta).Select((station) => new StationSnapshot(
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station.Id,
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station.Label,
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station.Category,
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station.SystemId,
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station.Position,
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station.Color,
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station.DockedShips,
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station.OreStored,
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station.RefinedStock,
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station.FactionId)).ToList(),
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world.Ships.Select(ToShipDelta).Select((ship) => new ShipSnapshot(
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ship.Id,
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ship.Label,
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ship.Role,
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ship.ShipClass,
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ship.SystemId,
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ship.Position,
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ship.Velocity,
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ship.TargetPosition,
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ship.State,
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ship.OrderKind,
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ship.DefaultBehaviorKind,
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ship.ControllerTaskKind,
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ship.Cargo,
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ship.CargoCapacity,
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ship.CargoItemId,
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ship.FactionId,
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ship.Health,
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ship.History)).ToList(),
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world.Factions.Select(ToFactionDelta).Select((faction) => new FactionSnapshot(
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faction.Id,
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faction.Label,
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faction.Color,
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faction.Credits,
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faction.OreMined,
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faction.GoodsProduced,
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faction.ShipsBuilt,
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faction.ShipsLost)).ToList());
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}
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public void PrimeDeltaBaseline(SimulationWorld world)
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{
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foreach (var node in world.Nodes)
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{
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node.LastDeltaSignature = BuildNodeSignature(node);
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}
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foreach (var station in world.Stations)
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{
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station.LastDeltaSignature = BuildStationSignature(station);
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}
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foreach (var ship in world.Ships)
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{
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ship.LastDeltaSignature = BuildShipSignature(ship);
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}
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foreach (var faction in world.Factions)
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{
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faction.LastDeltaSignature = BuildFactionSignature(faction);
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}
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}
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private static IReadOnlyList<ResourceNodeDelta> BuildNodeDeltas(SimulationWorld world)
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{
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var deltas = new List<ResourceNodeDelta>();
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foreach (var node in world.Nodes)
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{
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var signature = BuildNodeSignature(node);
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if (signature == node.LastDeltaSignature)
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{
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continue;
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}
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node.LastDeltaSignature = signature;
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deltas.Add(ToNodeDelta(node));
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}
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return deltas;
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}
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private static IReadOnlyList<StationDelta> BuildStationDeltas(SimulationWorld world)
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{
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var deltas = new List<StationDelta>();
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foreach (var station in world.Stations)
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{
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var signature = BuildStationSignature(station);
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if (signature == station.LastDeltaSignature)
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{
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continue;
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}
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station.LastDeltaSignature = signature;
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deltas.Add(ToStationDelta(station));
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}
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return deltas;
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}
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private static IReadOnlyList<ShipDelta> BuildShipDeltas(SimulationWorld world)
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{
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var deltas = new List<ShipDelta>();
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foreach (var ship in world.Ships)
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{
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var signature = BuildShipSignature(ship);
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if (signature == ship.LastDeltaSignature)
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{
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continue;
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}
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ship.LastDeltaSignature = signature;
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deltas.Add(ToShipDelta(ship));
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}
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return deltas;
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}
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private static IReadOnlyList<FactionDelta> BuildFactionDeltas(SimulationWorld world)
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{
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var deltas = new List<FactionDelta>();
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foreach (var faction in world.Factions)
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{
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var signature = BuildFactionSignature(faction);
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if (signature == faction.LastDeltaSignature)
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{
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continue;
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}
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faction.LastDeltaSignature = signature;
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deltas.Add(ToFactionDelta(faction));
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}
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return deltas;
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}
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private static string BuildNodeSignature(ResourceNodeRuntime node) =>
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$"{node.SystemId}|{node.OreRemaining:0.###}";
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private static string BuildStationSignature(StationRuntime station) =>
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$"{station.SystemId}|{station.OreStored:0.###}|{station.RefinedStock:0.###}|{station.DockedShipIds.Count}";
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private static string BuildShipSignature(ShipRuntime ship) =>
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string.Join("|",
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ship.SystemId,
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ship.Position.X.ToString("0.###"),
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ship.Position.Y.ToString("0.###"),
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ship.Position.Z.ToString("0.###"),
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ship.Velocity.X.ToString("0.###"),
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ship.Velocity.Y.ToString("0.###"),
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ship.Velocity.Z.ToString("0.###"),
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ship.TargetPosition.X.ToString("0.###"),
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ship.TargetPosition.Y.ToString("0.###"),
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ship.TargetPosition.Z.ToString("0.###"),
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ship.State,
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ship.Order?.Kind ?? "none",
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ship.DefaultBehavior.Kind,
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ship.ControllerTask.Kind,
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ship.Cargo.ToString("0.###"),
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ship.Health.ToString("0.###"));
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private static string BuildFactionSignature(FactionRuntime faction) =>
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$"{faction.Credits:0.###}|{faction.OreMined:0.###}|{faction.GoodsProduced:0.###}|{faction.ShipsBuilt}|{faction.ShipsLost}";
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private static ResourceNodeDelta ToNodeDelta(ResourceNodeRuntime node) => new(
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node.Id,
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node.SystemId,
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ToDto(node.Position),
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node.SourceKind,
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node.OreRemaining,
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node.MaxOre,
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node.ItemId);
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private static StationDelta ToStationDelta(StationRuntime station) => new(
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station.Id,
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station.Definition.Label,
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station.Definition.Category,
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station.SystemId,
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ToDto(station.Position),
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station.Definition.Color,
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station.DockedShipIds.Count,
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station.OreStored,
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station.RefinedStock,
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station.FactionId);
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private static ShipDelta ToShipDelta(ShipRuntime ship) => new(
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ship.Id,
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ship.Definition.Label,
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ship.Definition.Role,
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ship.Definition.ShipClass,
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ship.SystemId,
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ToDto(ship.Position),
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ToDto(ship.Velocity),
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ToDto(ship.TargetPosition),
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ship.State,
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ship.Order?.Kind,
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ship.DefaultBehavior.Kind,
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ship.ControllerTask.Kind,
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ship.Cargo,
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ship.Definition.CargoCapacity,
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ship.Definition.CargoItemId,
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ship.FactionId,
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ship.Health,
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ship.History.ToList());
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private static FactionDelta ToFactionDelta(FactionRuntime faction) => new(
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faction.Id,
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faction.Label,
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faction.Color,
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faction.Credits,
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faction.OreMined,
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faction.GoodsProduced,
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faction.ShipsBuilt,
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faction.ShipsLost);
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private static void EmitShipStateEvents(
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ShipRuntime ship,
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string previousState,
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string previousBehavior,
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string previousTask,
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string controllerEvent,
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ICollection<SimulationEventRecord> events)
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{
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var occurredAtUtc = DateTimeOffset.UtcNow;
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if (previousState != ship.State)
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{
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events.Add(new SimulationEventRecord("ship", ship.Id, "state-changed", $"{ship.Definition.Label} {previousState} -> {ship.State}", occurredAtUtc));
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}
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if (previousBehavior != ship.DefaultBehavior.Kind)
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{
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events.Add(new SimulationEventRecord("ship", ship.Id, "behavior-changed", $"{ship.Definition.Label} behavior {previousBehavior} -> {ship.DefaultBehavior.Kind}", occurredAtUtc));
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}
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if (previousTask != ship.ControllerTask.Kind)
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{
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events.Add(new SimulationEventRecord("ship", ship.Id, "task-changed", $"{ship.Definition.Label} task {previousTask} -> {ship.ControllerTask.Kind}", occurredAtUtc));
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}
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if (controllerEvent != "none")
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{
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events.Add(new SimulationEventRecord("ship", ship.Id, controllerEvent, $"{ship.Definition.Label} {controllerEvent}", occurredAtUtc));
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}
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}
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private void UpdateStations(SimulationWorld world, float deltaSeconds, ICollection<SimulationEventRecord> events)
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{
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foreach (var station in world.Stations)
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{
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if (station.Definition.Category != "refining" || station.OreStored < 60f)
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{
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continue;
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}
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station.ProcessTimer += deltaSeconds;
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if (station.ProcessTimer < 8f)
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{
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continue;
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}
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station.ProcessTimer = 0f;
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station.OreStored -= 60f;
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station.RefinedStock += 60f;
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events.Add(new SimulationEventRecord("station", station.Id, "refined", $"{station.Definition.Label} refined 60 ore", DateTimeOffset.UtcNow));
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var faction = world.Factions.FirstOrDefault((candidate) => candidate.Id == station.FactionId);
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if (faction is not null)
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{
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faction.GoodsProduced += 60f;
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faction.Credits += 18f;
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}
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}
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}
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private void RefreshControlLayers(ShipRuntime ship)
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{
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if (ship.Order is not null && ship.Order.Status == "queued")
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{
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ship.Order.Status = "accepted";
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}
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}
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private void PlanControllerTask(ShipRuntime ship, SimulationWorld world)
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{
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if (ship.Order is not null)
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{
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "travel",
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TargetEntityId = null,
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TargetSystemId = ship.Order.DestinationSystemId,
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TargetPosition = ship.Order.DestinationPosition,
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Threshold = world.Balance.ArrivalThreshold,
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};
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return;
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}
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if (ship.DefaultBehavior.Kind == "auto-mine")
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{
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PlanAutoMine(ship, world);
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return;
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}
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if (ship.DefaultBehavior.Kind == "patrol" && ship.DefaultBehavior.PatrolPoints.Count > 0)
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{
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "travel",
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TargetPosition = ship.DefaultBehavior.PatrolPoints[ship.DefaultBehavior.PatrolIndex],
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TargetSystemId = ship.SystemId,
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Threshold = 18f,
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};
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return;
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}
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "idle",
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Threshold = world.Balance.ArrivalThreshold,
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};
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}
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private void PlanAutoMine(ShipRuntime ship, SimulationWorld world)
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{
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var behavior = ship.DefaultBehavior;
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var refinery = world.Stations.FirstOrDefault((station) => station.Id == behavior.RefineryId);
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var node = behavior.NodeId is null
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? world.Nodes
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.Where((candidate) => candidate.SystemId == behavior.AreaSystemId)
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.OrderByDescending((candidate) => candidate.OreRemaining)
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.FirstOrDefault()
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: world.Nodes.FirstOrDefault((candidate) => candidate.Id == behavior.NodeId);
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if (refinery is null || node is null)
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{
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behavior.Kind = "idle";
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ship.ControllerTask = new ControllerTaskRuntime { Kind = "idle", Threshold = world.Balance.ArrivalThreshold };
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return;
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}
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behavior.NodeId ??= node.Id;
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switch (behavior.Phase)
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{
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case "extract":
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "extract",
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TargetEntityId = node.Id,
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TargetSystemId = node.SystemId,
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TargetPosition = node.Position,
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Threshold = 14f,
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};
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break;
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case "travel-to-station":
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "travel",
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TargetEntityId = refinery.Id,
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TargetSystemId = refinery.SystemId,
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TargetPosition = refinery.Position,
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Threshold = refinery.Definition.Radius + 8f,
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};
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break;
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case "dock":
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "dock",
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TargetEntityId = refinery.Id,
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TargetSystemId = refinery.SystemId,
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TargetPosition = refinery.Position,
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Threshold = refinery.Definition.Radius + 4f,
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};
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break;
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case "unload":
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "unload",
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TargetEntityId = refinery.Id,
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TargetSystemId = refinery.SystemId,
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TargetPosition = refinery.Position,
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Threshold = 0f,
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};
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break;
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case "undock":
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "undock",
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TargetEntityId = refinery.Id,
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TargetSystemId = refinery.SystemId,
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TargetPosition = new Vector3(refinery.Position.X + world.Balance.UndockDistance, refinery.Position.Y, refinery.Position.Z),
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Threshold = 8f,
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};
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break;
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default:
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ship.ControllerTask = new ControllerTaskRuntime
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{
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Kind = "travel",
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TargetEntityId = node.Id,
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TargetSystemId = node.SystemId,
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TargetPosition = node.Position,
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Threshold = 18f,
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};
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behavior.Phase = "travel-to-node";
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break;
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}
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}
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private string UpdateControllerTask(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
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{
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var task = ship.ControllerTask;
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switch (task.Kind)
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{
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case "idle":
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ship.State = "idle";
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ship.TargetPosition = ship.Position;
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return "none";
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case "travel":
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return UpdateTravel(ship, world, deltaSeconds);
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case "extract":
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return UpdateExtract(ship, world, deltaSeconds);
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case "dock":
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return UpdateDock(ship, world, deltaSeconds);
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case "unload":
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return UpdateUnload(ship, world, deltaSeconds);
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case "undock":
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return UpdateUndock(ship, world, deltaSeconds);
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default:
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ship.State = "idle";
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ship.TargetPosition = ship.Position;
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return "none";
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}
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}
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private string UpdateTravel(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
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{
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var task = ship.ControllerTask;
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if (task.TargetPosition is null || task.TargetSystemId is null)
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{
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ship.State = "idle";
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ship.TargetPosition = ship.Position;
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return "none";
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}
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ship.TargetPosition = task.TargetPosition.Value;
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var distance = ship.Position.DistanceTo(task.TargetPosition.Value);
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if (distance <= task.Threshold)
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{
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ship.Position = task.TargetPosition.Value;
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ship.TargetPosition = ship.Position;
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ship.SystemId = task.TargetSystemId;
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ship.State = "arriving";
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return "arrived";
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}
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var speed = ship.Definition.Speed;
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if (ship.SystemId != task.TargetSystemId)
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{
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ship.State = distance > 800f ? "ftl" : "spooling-ftl";
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speed = ship.Definition.FtlSpeed;
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}
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else if (distance > 200f)
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{
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ship.State = distance > 500f ? "warping" : "spooling-warp";
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speed = ship.Definition.Speed * 4.5f;
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}
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else
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{
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ship.State = "approaching";
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speed = ship.Definition.Speed;
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}
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|
|
ship.Position = ship.Position.MoveToward(task.TargetPosition.Value, speed * deltaSeconds);
|
|
return "none";
|
|
}
|
|
|
|
private string UpdateExtract(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
|
|
{
|
|
var task = ship.ControllerTask;
|
|
var node = world.Nodes.FirstOrDefault((candidate) => candidate.Id == task.TargetEntityId);
|
|
if (node is null || task.TargetPosition is null)
|
|
{
|
|
ship.State = "idle";
|
|
ship.TargetPosition = ship.Position;
|
|
return "none";
|
|
}
|
|
|
|
ship.TargetPosition = task.TargetPosition.Value;
|
|
var distance = ship.Position.DistanceTo(task.TargetPosition.Value);
|
|
if (distance > task.Threshold)
|
|
{
|
|
ship.State = "mining-approach";
|
|
ship.Position = ship.Position.MoveToward(task.TargetPosition.Value, ship.Definition.Speed * deltaSeconds);
|
|
return "none";
|
|
}
|
|
|
|
ship.State = "mining";
|
|
ship.ActionTimer += deltaSeconds;
|
|
if (ship.ActionTimer < 1f)
|
|
{
|
|
return "none";
|
|
}
|
|
|
|
ship.ActionTimer = 0f;
|
|
var mined = MathF.Min(world.Balance.MiningRate, ship.Definition.CargoCapacity - ship.Cargo);
|
|
mined = MathF.Min(mined, node.OreRemaining);
|
|
ship.Cargo += mined;
|
|
node.OreRemaining -= mined;
|
|
if (node.OreRemaining <= 0f)
|
|
{
|
|
node.OreRemaining = node.MaxOre;
|
|
}
|
|
|
|
return ship.Cargo >= ship.Definition.CargoCapacity ? "cargo-full" : "none";
|
|
}
|
|
|
|
private string UpdateDock(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
|
|
{
|
|
var task = ship.ControllerTask;
|
|
var station = world.Stations.FirstOrDefault((candidate) => candidate.Id == task.TargetEntityId);
|
|
if (station is null || task.TargetPosition is null)
|
|
{
|
|
ship.State = "idle";
|
|
ship.TargetPosition = ship.Position;
|
|
return "none";
|
|
}
|
|
|
|
ship.TargetPosition = task.TargetPosition.Value;
|
|
var distance = ship.Position.DistanceTo(task.TargetPosition.Value);
|
|
if (distance > task.Threshold)
|
|
{
|
|
ship.State = "docking-approach";
|
|
ship.Position = ship.Position.MoveToward(task.TargetPosition.Value, ship.Definition.Speed * deltaSeconds);
|
|
return "none";
|
|
}
|
|
|
|
ship.State = "docking";
|
|
ship.ActionTimer += deltaSeconds;
|
|
if (ship.ActionTimer < world.Balance.DockingDuration)
|
|
{
|
|
return "none";
|
|
}
|
|
|
|
ship.ActionTimer = 0f;
|
|
ship.State = "docked";
|
|
ship.DockedStationId = station.Id;
|
|
station.DockedShipIds.Add(ship.Id);
|
|
ship.Position = station.Position;
|
|
ship.TargetPosition = station.Position;
|
|
return "docked";
|
|
}
|
|
|
|
private string UpdateUnload(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
|
|
{
|
|
if (ship.DockedStationId is null)
|
|
{
|
|
ship.State = "idle";
|
|
ship.TargetPosition = ship.Position;
|
|
return "none";
|
|
}
|
|
|
|
var station = world.Stations.FirstOrDefault((candidate) => candidate.Id == ship.DockedStationId);
|
|
if (station is null)
|
|
{
|
|
ship.DockedStationId = null;
|
|
ship.State = "idle";
|
|
ship.TargetPosition = ship.Position;
|
|
return "none";
|
|
}
|
|
|
|
ship.TargetPosition = station.Position;
|
|
ship.State = "transferring";
|
|
var moved = MathF.Min(ship.Cargo, world.Balance.TransferRate * deltaSeconds);
|
|
ship.Cargo -= moved;
|
|
station.OreStored += moved;
|
|
var faction = world.Factions.FirstOrDefault((candidate) => candidate.Id == ship.FactionId);
|
|
if (faction is not null)
|
|
{
|
|
faction.OreMined += moved;
|
|
faction.Credits += moved * 0.4f;
|
|
}
|
|
|
|
return ship.Cargo <= 0.01f ? "unloaded" : "none";
|
|
}
|
|
|
|
private string UpdateUndock(ShipRuntime ship, SimulationWorld world, float deltaSeconds)
|
|
{
|
|
var task = ship.ControllerTask;
|
|
if (ship.DockedStationId is null || task.TargetPosition is null)
|
|
{
|
|
ship.State = "idle";
|
|
ship.TargetPosition = ship.Position;
|
|
return "none";
|
|
}
|
|
|
|
ship.TargetPosition = task.TargetPosition.Value;
|
|
var station = world.Stations.FirstOrDefault((candidate) => candidate.Id == ship.DockedStationId);
|
|
station?.DockedShipIds.Remove(ship.Id);
|
|
ship.DockedStationId = null;
|
|
ship.State = "undocking";
|
|
ship.Position = ship.Position.MoveToward(task.TargetPosition.Value, ship.Definition.Speed * deltaSeconds);
|
|
return ship.Position.DistanceTo(task.TargetPosition.Value) <= task.Threshold ? "undocked" : "none";
|
|
}
|
|
|
|
private void AdvanceControlState(ShipRuntime ship, string controllerEvent)
|
|
{
|
|
if (ship.Order is not null && controllerEvent == "arrived")
|
|
{
|
|
ship.Order = null;
|
|
ship.ControllerTask.Kind = "idle";
|
|
return;
|
|
}
|
|
|
|
if (ship.DefaultBehavior.Kind == "auto-mine")
|
|
{
|
|
switch (ship.DefaultBehavior.Phase, controllerEvent)
|
|
{
|
|
case ("travel-to-node", "arrived"):
|
|
ship.DefaultBehavior.Phase = ship.Cargo >= ship.Definition.CargoCapacity ? "travel-to-station" : "extract";
|
|
break;
|
|
case ("extract", "cargo-full"):
|
|
ship.DefaultBehavior.Phase = "travel-to-station";
|
|
break;
|
|
case ("travel-to-station", "arrived"):
|
|
ship.DefaultBehavior.Phase = "dock";
|
|
break;
|
|
case ("dock", "docked"):
|
|
ship.DefaultBehavior.Phase = "unload";
|
|
break;
|
|
case ("unload", "unloaded"):
|
|
ship.DefaultBehavior.Phase = "undock";
|
|
break;
|
|
case ("undock", "undocked"):
|
|
ship.DefaultBehavior.Phase = "travel-to-node";
|
|
ship.DefaultBehavior.NodeId = null;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ship.DefaultBehavior.Kind == "patrol" && controllerEvent == "arrived" && ship.DefaultBehavior.PatrolPoints.Count > 0)
|
|
{
|
|
ship.DefaultBehavior.PatrolIndex = (ship.DefaultBehavior.PatrolIndex + 1) % ship.DefaultBehavior.PatrolPoints.Count;
|
|
}
|
|
}
|
|
|
|
private static void TrackHistory(ShipRuntime ship)
|
|
{
|
|
var signature = $"{ship.State}|{ship.DefaultBehavior.Kind}|{ship.ControllerTask.Kind}|{ship.Cargo:0.0}";
|
|
if (signature == ship.LastSignature)
|
|
{
|
|
return;
|
|
}
|
|
|
|
ship.LastSignature = signature;
|
|
ship.History.Add($"{DateTimeOffset.UtcNow:HH:mm:ss} state={ship.State} behavior={ship.DefaultBehavior.Kind} task={ship.ControllerTask.Kind} cargo={ship.Cargo:0.#}");
|
|
if (ship.History.Count > 18)
|
|
{
|
|
ship.History.RemoveAt(0);
|
|
}
|
|
}
|
|
|
|
private static Vector3Dto ToDto(Vector3 value) => new(value.X, value.Y, value.Z);
|
|
}
|