Make HTN constantly replanning optional (#33023)

Make constant replanning optional
And apply it to our most expensive NPCs

Content.Server/NPC/HTN/HTNComponent.cs

@@ -37,6 +37,9 @@ public sealed partial class HTNComponent : NPCComponent
     [ViewVariables(VVAccess.ReadWrite)]
     public float PlanAccumulator = 0f;
 
+    [DataField]
+    public bool ConstantlyReplan = true;
+
     [ViewVariables]
     public HTNPlanJob? PlanningJob = null;
 

Content.Server/NPC/HTN/HTNSystem.cs

@@ -328,7 +328,7 @@ public sealed class HTNSystem : EntitySystem
             component.PlanAccumulator -= frameTime;
 
         // We'll still try re-planning occasionally even when we're updating in case new data comes in.
-        if (component.PlanAccumulator <= 0f)
+        if ((component.ConstantlyReplan || component.Plan is null) && component.PlanAccumulator <= 0f)
         {
             RequestPlan(component);
         }
@@ -462,7 +462,7 @@ public sealed class HTNSystem : EntitySystem
         if (component.PlanningJob != null)
             return;
 
-        component.PlanAccumulator += component.PlanCooldown;
+        component.PlanAccumulator = component.PlanCooldown;
         var cancelToken = new CancellationTokenSource();
         var branchTraversal = component.Plan?.BranchTraversalRecord;
 

Resources/Prototypes/Entities/Mobs/NPCs/animals.yml

@@ -332,6 +332,7 @@
   - type: Item
     size: Tiny
   - type: HTN
+    constantlyReplan: false
     rootTask:
       task: MouseCompound
   - type: Physics
@@ -1681,6 +1682,7 @@
     factions:
       - Mouse
   - type: HTN
+    constantlyReplan: false
     rootTask:
       task: MouseCompound
   - type: Physics

Resources/Prototypes/Entities/Mobs/NPCs/asteroid.yml

@@ -70,6 +70,7 @@
     factions:
     - SimpleHostile
   - type: HTN
+    constantlyReplan: false
     rootTask:
       task: GoliathCompound
     blackboard:

Resources/Prototypes/Entities/Mobs/NPCs/space.yml

@@ -405,6 +405,7 @@
     factions:
       - Mouse
   - type: HTN
+    constantlyReplan: false
     rootTask:
       task: MouseCompound
   - type: Physics