feat: goap ai for faction and ship

2026-03-18 00:09:39 -04:00
parent b3508d9d08
commit ad5f733b3e
14 changed files with 945 additions and 349 deletions
--- a/apps/backend/Simulation/AI/ShipController.cs
+++ b/apps/backend/Simulation/AI/ShipController.cs
@@ -0,0 +1,154 @@
+namespace SpaceGame.Simulation.Api.Simulation;
+
+// ─── Planning State ────────────────────────────────────────────────────────────
+
+public sealed class ShipPlanningState
+{
+  public string ShipKind { get; set; } = string.Empty;
+  public bool HasMiningCapability { get; set; }
+  public bool FactionWantsOre { get; set; }
+  public bool FactionWantsExpansion { get; set; }
+  public string? CurrentObjective { get; set; }
+
+  public ShipPlanningState Clone() => (ShipPlanningState)MemberwiseClone();
+}
+
+// ─── Goals ─────────────────────────────────────────────────────────────────────
+
+// A ship should always have an assigned objective. The planner picks the best one.
+public sealed class AssignObjectiveGoal : GoapGoal<ShipPlanningState>
+{
+  public override string Name => "assign-objective";
+
+  public override bool IsSatisfied(ShipPlanningState state) => state.CurrentObjective is not null;
+
+  public override float ComputePriority(ShipPlanningState state, SimulationWorld world, CommanderRuntime commander) =>
+      100f;
+}
+
+// ─── Actions ───────────────────────────────────────────────────────────────────
+
+public sealed class SetMiningObjectiveAction : GoapAction<ShipPlanningState>
+{
+  public override string Name => "set-mining-objective";
+  public override float Cost => 1f;
+
+  public override bool CheckPreconditions(ShipPlanningState state) =>
+      state.HasMiningCapability && state.FactionWantsOre;
+
+  public override ShipPlanningState ApplyEffects(ShipPlanningState state)
+  {
+    state.CurrentObjective = "auto-mine";
+    return state;
+  }
+
+  public override void Execute(SimulationEngine engine, SimulationWorld world, CommanderRuntime commander)
+  {
+    var ship = world.Ships.FirstOrDefault(s => s.Id == commander.ControlledEntityId);
+    if (ship is null || string.Equals(ship.DefaultBehavior.Kind, "auto-mine", StringComparison.Ordinal))
+    {
+      return;
+    }
+
+    ship.DefaultBehavior.Kind = "auto-mine";
+    ship.DefaultBehavior.Phase = null;
+    ship.DefaultBehavior.NodeId = null;
+  }
+}
+
+public sealed class SetPatrolObjectiveAction : GoapAction<ShipPlanningState>
+{
+  public override string Name => "set-patrol-objective";
+  public override float Cost => 2f;
+
+  public override bool CheckPreconditions(ShipPlanningState state) =>
+      string.Equals(state.ShipKind, "military", StringComparison.Ordinal);
+
+  public override ShipPlanningState ApplyEffects(ShipPlanningState state)
+  {
+    state.CurrentObjective = "patrol";
+    return state;
+  }
+
+  public override void Execute(SimulationEngine engine, SimulationWorld world, CommanderRuntime commander)
+  {
+    var ship = world.Ships.FirstOrDefault(s => s.Id == commander.ControlledEntityId);
+    if (ship is null || string.Equals(ship.DefaultBehavior.Kind, "patrol", StringComparison.Ordinal))
+    {
+      return;
+    }
+
+    if (ship.DefaultBehavior.PatrolPoints.Count == 0)
+    {
+      var station = world.Stations.FirstOrDefault(s =>
+          s.FactionId == ship.FactionId &&
+          string.Equals(s.SystemId, ship.SystemId, StringComparison.Ordinal));
+
+      if (station is not null)
+      {
+        var radius = station.Radius + 90f;
+        ship.DefaultBehavior.PatrolPoints.AddRange(
+        [
+          new Vector3(station.Position.X + radius, station.Position.Y, station.Position.Z),
+          new Vector3(station.Position.X, station.Position.Y, station.Position.Z + radius),
+          new Vector3(station.Position.X - radius, station.Position.Y, station.Position.Z),
+          new Vector3(station.Position.X, station.Position.Y, station.Position.Z - radius),
+        ]);
+      }
+    }
+
+    ship.DefaultBehavior.Kind = "patrol";
+  }
+}
+
+public sealed class SetConstructionObjectiveAction : GoapAction<ShipPlanningState>
+{
+  public override string Name => "set-construction-objective";
+  public override float Cost => 1f;
+
+  public override bool CheckPreconditions(ShipPlanningState state) =>
+      string.Equals(state.ShipKind, "construction", StringComparison.Ordinal) && state.FactionWantsExpansion;
+
+  public override ShipPlanningState ApplyEffects(ShipPlanningState state)
+  {
+    state.CurrentObjective = "construct-station";
+    return state;
+  }
+
+  public override void Execute(SimulationEngine engine, SimulationWorld world, CommanderRuntime commander)
+  {
+    var ship = world.Ships.FirstOrDefault(s => s.Id == commander.ControlledEntityId);
+    if (ship is null || string.Equals(ship.DefaultBehavior.Kind, "construct-station", StringComparison.Ordinal))
+    {
+      return;
+    }
+
+    ship.DefaultBehavior.Kind = "construct-station";
+    ship.DefaultBehavior.Phase = null;
+  }
+}
+
+public sealed class SetIdleObjectiveAction : GoapAction<ShipPlanningState>
+{
+  public override string Name => "set-idle-objective";
+  public override float Cost => 10f;
+
+  public override bool CheckPreconditions(ShipPlanningState state) => true;
+
+  public override ShipPlanningState ApplyEffects(ShipPlanningState state)
+  {
+    state.CurrentObjective = "idle";
+    return state;
+  }
+
+  public override void Execute(SimulationEngine engine, SimulationWorld world, CommanderRuntime commander)
+  {
+    var ship = world.Ships.FirstOrDefault(s => s.Id == commander.ControlledEntityId);
+    if (ship is null || string.Equals(ship.DefaultBehavior.Kind, "idle", StringComparison.Ordinal))
+    {
+      return;
+    }
+
+    ship.DefaultBehavior.Kind = "idle";
+  }
+}