riversong code showcase

2026-05-21 15:52:18 +02:00
commit 4c9eea1c02
462 changed files with 23406 additions and 0 deletions
--- a/Source/Riversong/Game/World/Agents/HunterBehaviorSystem.cs
+++ b/Source/Riversong/Game/World/Agents/HunterBehaviorSystem.cs
@@ -0,0 +1,78 @@
+using Unity.Mathematics;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    [GameSystemGroup(typeof(EarlyAgentsSystemGroup))]
+    [UpdateAfter(typeof(AgentSpawnSystemsGroup))]
+    public class HunterBehaviorSystem : GameSystem, IUpdatable
+    {
+        private const int HunterFireRange = 8;
+
+        [InjectService]
+        private IEntityCollection _entityCollection;
+
+        [InjectService]
+        private IEntityCache _entityCache;
+
+        [InjectService]
+        private ITileSpace _tileSpace;
+
+        [InjectService]
+        private IIntentLogicExecutor _intentLogicExecutor;
+
+        [InjectService]
+        private IProjectileManager _projectileManager;
+
+        public HunterBehaviorSystem(IServiceLocator serviceLocator) : base(serviceLocator)
+        {
+        }
+
+        public void Update()
+        {
+            foreach (var hunter in _entityCache.GetHunterAgents())
+            {
+                if (hunter.LifecycleState != AgentLifecycleState.Live) continue;
+
+                ref var jobState = ref hunter.GetJobStateRW();
+                if (jobState.StateMachineStep != AgentStateMachineStep.Hunter_SeekingPrey) continue;
+
+                if (UpdateSeekingPrey(hunter)) jobState.StateMachineStep = AgentStateMachineStep.ReturningHome;
+            }
+        }
+
+        private bool UpdateSeekingPrey(Agent hunter)
+        {
+            const float hunterRangeSq = HunterFireRange * HunterFireRange;
+
+            if (!_entityCollection.TryGet<Building>(hunter.HomeId, out var hunterBuilding)) return false;
+
+            var hunterTile = _tileSpace.WorldToTile(hunter.Position);
+
+            var critterDefinitionId = hunterBuilding.Definition.TargetCritter.RuntimeId;
+
+            foreach (var critter in _entityCache.GetCritterAgents())
+            {
+                ref var critterState = ref critter.GetCritterStateRW();
+
+                if (critterState.CritterDefinitionId != critterDefinitionId || critter.LifecycleState != AgentLifecycleState.Live || critterState.LockId != Entity.InvalidId)
+                    continue;
+
+                var critterTile = _tileSpace.WorldToTile(critter.Position);
+                if (math.distancesq(hunterTile, critterTile) > hunterRangeSq) continue;
+
+                critterState.LockId = hunter.Id;
+
+                ref var hunterIntentQueue = ref _intentLogicExecutor.CancelRemainingIntents(hunter);
+                var projectileTravelTime = _projectileManager.ComputeProjectileTravelTime(hunter, critter);
+                IntentQueue.FireAtPreyAndReturnHome(ref hunterIntentQueue, hunterBuilding.Rect, hunterBuilding.Id, critterTile, critter.Id, projectileTravelTime);
+
+                ref var critterIntentQueue = ref _intentLogicExecutor.CancelRemainingIntents(critter);
+                critterIntentQueue.EnqueueIntent(AgentIntent.WaitForever());
+
+                return true;
+            }
+
+            return false;
+        }
+    }
+}