feat: shared creature root, enemy definitions, defend duty, and player downing

simulation/actions/ActionSelectionSystem.gd

@@ -24,7 +24,8 @@ func select_action(
 	all_npcs: Array = [],
 	opportunity_helper: OpportunityHelperResult = null,
 	population_view: SimulationPopulationView = null,
-	animal_feed_available: bool = false
+	animal_feed_available: bool = false,
+	war_raid_active: bool = false
 ) -> ActionSelectionResult:
 	if npc.is_dead:
 		return null
@@ -115,6 +116,10 @@ func select_action(
 			-1.0,
 			"Responding to village need: %s" % opportunity_helper.reason
 		)
+	if war_raid_active and period == SchedulePeriod.WORK and _is_eligible_defender(npc):
+		return ActionSelectionResult.new(
+			SimulationIds.ACTION_DEFEND, -1.0, "Rallying to defend the village"
+		)
 	if npc.get_inventory_amount(SimulationIds.RESOURCE_FOOD) > 0.0:
 		return ActionSelectionResult.new(
 			SimulationIds.ACTION_DEPOSIT_FOOD, -1.0, "Carrying food for storage"
@@ -297,6 +302,10 @@ func _calculate_score(
 	return score
 
 
+static func _is_eligible_defender(npc: SimNPC) -> bool:
+	return npc.strength >= 5.0 or npc.profession == SimulationIds.PROFESSION_GUARD
+
+
 static func _get_period(time_of_day: float) -> int:
 	if _in_wrap_range(time_of_day, SLEEP_BEGIN, SLEEP_END):
 		return SchedulePeriod.SLEEP