feat(combat): disable monster aggro in act-scene so monsters stay idle in place

src/game/combat.ts

@@ -66,6 +66,8 @@ export interface CombatOptions {
   readonly playerManaPerAttack: number
   /** Ticks before a dead player is restored, at full resources. */
   readonly respawnTicks: number
+  /** When true, monsters ignore aggro distance and remain standing still (idle). */
+  readonly disableMonsterAggro?: boolean
 }
 
 /** One monster's immutable numbers, read from a table row. */
@@ -731,6 +733,11 @@ function tickMonsters(world: CombatWorld, options: CombatOptions, terrain: Comba
     if (monster.hitFlash > 0) monster.hitFlash -= 1
     if (monster.cooldown > 0) monster.cooldown -= 1
 
+    if (options.disableMonsterAggro) {
+      monster.state = 'idle'
+      continue
+    }
+
     const player = nearestTarget(monster, targets)
     if (player === null) {
       monster.state = 'idle'

src/scene/act-scene.ts

@@ -1155,6 +1155,7 @@ function runScene(runtime: MapRuntime, renderer: SpriteRenderer, started: number
         playerDamage: 7,
         playerManaPerAttack: 2,
         respawnTicks: 75,
+        disableMonsterAggro: true,
       },
       lootSeed: 0x5eed,
       talkRadius: 80,