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

player/combat/player_combat_controller.gd

@@ -44,8 +44,15 @@ func _resolve_references() -> void:
 func _physics_process(delta: float) -> void:
 	if not _references_resolved:
 		_resolve_references()
+	if simulation_manager != null and simulation_manager.has_method("update_player_combatant"):
+		simulation_manager.update_player_combatant(player.global_position)
 	attack_timer = maxf(attack_timer - delta, 0.0)
 	dash_timer = maxf(dash_timer - delta, 0.0)
+	if _player_is_downed():
+		attack_timer = 0.0
+		dash_timer = 0.0
+		dashing = false
+		return
 	if dashing:
 		player.velocity = dash_velocity
 		if dash_timer <= 0.0:
@@ -58,6 +65,14 @@ func _physics_process(delta: float) -> void:
 		_perform_dash()
 
 
+func _player_is_downed() -> bool:
+	return (
+		simulation_manager != null
+		and simulation_manager.has_method("player_is_downed")
+		and simulation_manager.player_is_downed()
+	)
+
+
 func _perform_attack() -> void:
 	attack_timer = attack_cooldown_seconds
 	_play_swing()

player/npc/NpcVisual.gd

@@ -492,7 +492,7 @@ func _create_task_glyph_mesh(action_id: StringName) -> PrimitiveMesh:
 			var crate := BoxMesh.new()
 			crate.size = Vector3(0.34, 0.22, 0.34)
 			return crate
-		SimulationIds.ACTION_PATROL:
+		SimulationIds.ACTION_PATROL, SimulationIds.ACTION_DEFEND:
 			var shield := CylinderMesh.new()
 			shield.top_radius = 0.2
 			shield.bottom_radius = 0.2
@@ -532,7 +532,7 @@ func _get_task_glyph_color(action_id: StringName) -> Color:
 			return Color(0.58, 0.34, 0.16, 1.0)
 		SimulationIds.ACTION_DEPOSIT_FOOD:
 			return Color(0.95, 0.72, 0.32, 1.0)
-		SimulationIds.ACTION_PATROL:
+		SimulationIds.ACTION_PATROL, SimulationIds.ACTION_DEFEND:
 			return Color(0.36, 0.58, 0.95, 1.0)
 		SimulationIds.ACTION_STUDY:
 			return Color(0.62, 0.46, 0.9, 1.0)

player/player.gd

@@ -25,6 +25,11 @@ func _ready() -> void:
 
 
 func _physics_process(delta: float) -> void:
+	if _is_player_downed():
+		velocity.x = move_toward(velocity.x, 0.0, acceleration * delta)
+		velocity.z = move_toward(velocity.z, 0.0, acceleration * delta)
+		move_and_slide()
+		return
 	var input := Input.get_vector("move_left", "move_right", "move_forward", "move_backward")
 
 	var forward := -camera_rig.global_transform.basis.z
@@ -55,6 +60,14 @@ func _physics_process(delta: float) -> void:
 		rotation.y = lerp_angle(rotation.y, target_angle, rotation_speed * delta)
 
 
+func _is_player_downed() -> bool:
+	return (
+		simulation_manager != null
+		and simulation_manager.has_method("player_is_downed")
+		and simulation_manager.player_is_downed()
+	)
+
+
 func _unhandled_input(event: InputEvent) -> void:
 	if event.is_action_pressed("interact"):
 		try_interact()

simulation/SimulationManager.gd

@@ -33,6 +33,7 @@ signal combatant_died(combatant_id: StringName)
 signal raid_started(raider_ids: Array[StringName])
 signal war_resolved(outcome: StringName)
 signal war_aborted
+signal player_downed
 
 var village := SimVillage.new()
 var player_system := PlayerCitizenSystem.new()
@@ -98,6 +99,8 @@ func _ready() -> void:
 	conflict_system.raid_started.connect(func(raider_ids): raid_started.emit(raider_ids))
 	conflict_system.war_resolved.connect(func(outcome): war_resolved.emit(outcome))
 	conflict_system.war_aborted.connect(func(): war_aborted.emit())
+	conflict_system.player_damaged.connect(_on_player_damaged)
+	conflict_system.player_downed.connect(func(): player_downed.emit())
 	action_selector.relationship_system = relationship_system
 	var definition_errors := SimulationDefinitions.validate()
 	if not definition_errors.is_empty():
@@ -258,8 +261,16 @@ func _select_action_if_idle(npc: SimNPC, previous_state: StringName) -> void:
 		record_narrative_event(SimulationIds.EVENT_VILLAGER_WEAK, npc.id)
 	var helper := get_active_opportunity_helper()
 	var animal_feed_available := animal_care.has_available_feed_target(npc.id)
+	var war_raid_active := conflict_system.is_raiding()
 	var selection := action_selector.select_action(
-		npc, village, clock.time_of_day(), npcs, helper, _population_view, animal_feed_available
+		npc,
+		village,
+		clock.time_of_day(),
+		npcs,
+		helper,
+		_population_view,
+		animal_feed_available,
+		war_raid_active
 	)
 	if selection == null:
 		return
@@ -390,6 +401,8 @@ func _apply_action_completion(
 			pass
 		SimulationIds.ACTION_PATROL, SimulationIds.ACTION_STUDY, SimulationIds.ACTION_REST, SimulationIds.ACTION_WANDER:
 			village.apply_npc_task(npc)
+		SimulationIds.ACTION_DEFEND:
+			village.apply_metric_delta(&"safety", 0.5)
 	if debug_logs and completed_task == SimulationIds.ACTION_SLEEP:
 		print("[SimulationManager] ", npc.npc_name, " completed sleep at home")
 
@@ -1138,6 +1151,31 @@ func harvest_resource_node(node: ResourceNode) -> float:
 
 func advance_player_needs() -> void:
 	player_system.advance_needs(village.food_modifier)
+	player_system.player_state.advance_health()
+	_sync_player_combatant()
+
+
+func _sync_player_combatant() -> void:
+	conflict_system.set_player_health(
+		player_system.player_state.get_health(), player_system.player_state.is_downed()
+	)
+
+
+func _on_player_damaged(amount: float) -> void:
+	player_system.player_state.take_damage(amount)
+	_sync_player_combatant()
+
+
+func update_player_combatant(position: Vector3) -> void:
+	conflict_system.set_player_combatant_position(position)
+
+
+func player_is_downed() -> bool:
+	return player_system.player_state.is_downed()
+
+
+func get_player_health() -> float:
+	return player_system.player_state.get_health()
 
 
 func get_season() -> StringName:

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

simulation/conflict/ConflictSystem.gd

@@ -15,6 +15,8 @@ signal combatant_died(combatant_id: StringName)
 signal raid_started(raider_ids: Array[StringName])
 signal war_resolved(outcome: StringName)
 signal war_aborted
+signal player_damaged(amount: float)
+signal player_downed
 
 const NPC_MAX_HEALTH := 100.0
 const STRONG_STRENGTH := 5.0
@@ -24,9 +26,7 @@ const WOLF_HUNT_RADIUS := 18.0
 const RAID_SPAWN_OFFSET := Vector3(42.0, 0.0, 42.0)
 const RAID_SPEED := 1.2
 const RAID_SIZE := 4
-const RAIDER_HEALTH := 60.0
-const WOLF_HEALTH := 40.0
-const RAIDER_REACH_FACTOR := 1.6
+const PLAYER_COMBATANT_ID := &"player_combatant"
 
 var combatants: Dictionary = {}
 var factions: Dictionary = {}
@@ -52,6 +52,53 @@ func initialize_factions() -> void:
 		factions[SimulationIds.FACTION_TRIBE] = FactionStateRecord.create(
 			SimulationIds.FACTION_TRIBE, "Hill Tribe", 4.0, RAID_SIZE, 0.7, 0.7
 		)
+	_ensure_player_combatant()
+
+
+func _ensure_player_combatant() -> void:
+	if combatants.has(PLAYER_COMBATANT_ID):
+		return
+	var sword := SimulationItems.get_weapon(SimulationIds.ITEM_SWORD)
+	combatants[PLAYER_COMBATANT_ID] = CombatantStateRecord.create(
+		PLAYER_COMBATANT_ID,
+		SimulationIds.COMBATANT_KIND_PLAYER,
+		SimulationIds.FACTION_VILLAGE,
+		"Player",
+		village_center,
+		100.0,
+		sword.item_id if sword != null else SimulationIds.ITEM_SWORD,
+		CombatantStateRecord.NO_NPC_ID
+	)
+
+
+func set_player_combatant_position(position: Vector3) -> void:
+	var player_combatant := get_combatant(PLAYER_COMBATANT_ID)
+	if player_combatant == null:
+		_ensure_player_combatant()
+		player_combatant = get_combatant(PLAYER_COMBATANT_ID)
+	if player_combatant != null:
+		player_combatant.set_position(position)
+
+
+func set_player_health(health: float, downed: bool) -> void:
+	var player_combatant := get_combatant(PLAYER_COMBATANT_ID)
+	if player_combatant == null:
+		_ensure_player_combatant()
+		player_combatant = get_combatant(PLAYER_COMBATANT_ID)
+	if player_combatant == null:
+		return
+	if not downed and player_combatant.is_alive():
+		var target := clampf(health, 0.0, player_combatant.get_max_health())
+		var current := player_combatant.get_health()
+		if target < current:
+			player_combatant.take_damage(current - target)
+		elif target > current:
+			player_combatant.data["health"] = target
+
+
+func is_player_downed() -> bool:
+	var player_combatant := get_combatant(PLAYER_COMBATANT_ID)
+	return player_combatant != null and not player_combatant.is_alive()
 
 
 func register_npc_combatants(npc_list: Array[SimNPC]) -> void:
@@ -100,7 +147,7 @@ func advance(simulation_tick: int) -> void:
 
 
 func _advance_raider_positions() -> void:
-	if not _is_raiding():
+	if not is_raiding():
 		return
 	for combatant_id in _sorted_combatant_ids():
 		var combatant := combatants[combatant_id] as CombatantStateRecord
@@ -132,16 +179,17 @@ func player_attack(combatant_id: StringName) -> float:
 
 
 func spawn_wolf(position: Vector3) -> StringName:
+	var definition := SimulationEnemies.get_enemy(&"enemy_wolf")
 	var wolf_id := StringName("wolf_%d" % next_wolf_id)
 	next_wolf_id += 1
 	var wolf := CombatantStateRecord.create(
 		wolf_id,
 		SimulationIds.COMBATANT_KIND_WOLF,
 		SimulationIds.FACTION_TRIBE,
-		"Wolf",
+		definition.display_name if definition != null else "Wolf",
 		position,
-		WOLF_HEALTH,
-		SimulationIds.ITEM_CLAW,
+		definition.health if definition != null else 40.0,
+		definition.weapon_id if definition != null else SimulationIds.ITEM_CLAW,
 		CombatantStateRecord.NO_NPC_ID,
 		true
 	)
@@ -165,6 +213,11 @@ func _apply_damage(target: CombatantStateRecord, damage: float, actor_id: int) -
 		target.get_weapon_id(),
 		applied
 	)
+	if target.get_kind() == SimulationIds.COMBATANT_KIND_PLAYER:
+		player_damaged.emit(applied)
+		if not target.is_alive():
+			player_downed.emit()
+		return applied
 	if not target.is_alive():
 		_kill_combatant(target, actor_id)
 	return applied
@@ -313,6 +366,7 @@ func village_defender_count() -> int:
 
 
 func _start_raid(tribe: FactionStateRecord, simulation_tick: int) -> void:
+	var definition := SimulationEnemies.get_enemy(&"enemy_raider")
 	tribe.set_war_plan(SimulationIds.WAR_PLAN_RAIDING, simulation_tick)
 	tribe.set_stance(SimulationIds.STANCE_HOSTILE)
 	var raider_ids: Array[StringName] = []
@@ -324,10 +378,10 @@ func _start_raid(tribe: FactionStateRecord, simulation_tick: int) -> void:
 			raider_id,
 			SimulationIds.COMBATANT_KIND_RAIDER,
 			SimulationIds.FACTION_TRIBE,
-			"Raider",
+			definition.display_name if definition != null else "Raider",
 			village_center + RAID_SPAWN_OFFSET + offset,
-			RAIDER_HEALTH,
-			SimulationIds.ITEM_SWORD,
+			definition.health if definition != null else 60.0,
+			definition.weapon_id if definition != null else SimulationIds.ITEM_SWORD,
 			CombatantStateRecord.NO_NPC_ID,
 			true
 		)
@@ -347,7 +401,7 @@ func _start_raid(tribe: FactionStateRecord, simulation_tick: int) -> void:
 
 
 func _run_battle() -> void:
-	var raid_active := _is_raiding()
+	var raid_active := is_raiding()
 	var living_hostiles: Array[CombatantStateRecord] = []
 	for combatant_id in _sorted_combatant_ids():
 		var combatant := combatants[combatant_id] as CombatantStateRecord
@@ -483,11 +537,7 @@ func _reach(combatant: CombatantStateRecord) -> float:
 	var weapon := SimulationItems.get_weapon(combatant.get_weapon_id())
 	if weapon == null:
 		return 1.5
-	return (
-		weapon.reach * RAIDER_REACH_FACTOR
-		if combatant.get_kind() == SimulationIds.COMBATANT_KIND_WOLF
-		else weapon.reach
-	)
+	return weapon.reach
 
 
 func _actor_id_for(combatant: CombatantStateRecord) -> int:
@@ -506,7 +556,7 @@ func _living_village_npc_count() -> int:
 	return count
 
 
-func _is_raiding() -> bool:
+func is_raiding() -> bool:
 	var tribe := _get_faction(SimulationIds.FACTION_TRIBE)
 	return tribe != null and tribe.get_war_plan() == SimulationIds.WAR_PLAN_RAIDING
 
@@ -596,6 +646,8 @@ func _narrative_event_requested(
 func append_state_records(record: SimulationStateRecord) -> void:
 	var combatant_keys: Array[String] = []
 	for combatant_id in combatants.keys():
+		if String(combatant_id) == String(PLAYER_COMBATANT_ID):
+			continue
 		combatant_keys.append(String(combatant_id))
 	combatant_keys.sort()
 	for combatant_key in combatant_keys:

simulation/definitions/EnemyDefinition.gd

@@ -0,0 +1,31 @@
+class_name EnemyDefinition
+extends Resource
+
+@export var enemy_id: StringName
+@export var display_name: String
+@export var kind: StringName = SimulationIds.COMBATANT_KIND_RAIDER
+@export var weapon_id: StringName = SimulationIds.ITEM_SWORD
+@export var health := 60.0
+@export var move_speed := 3.5
+@export var body_color := Color(0.4, 0.13, 0.1, 1.0)
+@export var accent_color := Color(0.55, 0.55, 0.58, 1.0)
+@export var visual_scale := Vector3.ONE
+
+
+func validate() -> Array[String]:
+	var errors: Array[String] = []
+	if enemy_id.is_empty():
+		errors.append("enemy_id is empty")
+	if display_name.is_empty():
+		errors.append("display_name is empty for '%s'" % enemy_id)
+	if (
+		kind
+		not in [
+			SimulationIds.COMBATANT_KIND_RAIDER,
+			SimulationIds.COMBATANT_KIND_WOLF,
+		]
+	):
+		errors.append("kind '%s' is invalid for '%s'" % [kind, enemy_id])
+	if health <= 0.0:
+		errors.append("health must be positive for '%s'" % enemy_id)
+	return errors

simulation/definitions/EnemyDefinition.gd.uid

@@ -0,0 +1 @@
+uid://5tfgb1oww0e0

simulation/definitions/SimulationDefinitions.gd

@@ -13,7 +13,8 @@ const ACTION_PATHS := [
 	"res://simulation/definitions/actions/deposit_food.tres",
 	"res://simulation/definitions/actions/withdraw_food.tres",
 	"res://simulation/definitions/actions/sleep.tres",
-	"res://simulation/definitions/actions/deposit_wood.tres"
+	"res://simulation/definitions/actions/deposit_wood.tres",
+	"res://simulation/definitions/actions/defend.tres"
 ]
 
 const PROFESSION_PATHS := [

simulation/definitions/SimulationEnemies.gd

@@ -0,0 +1,51 @@
+class_name SimulationEnemies
+extends RefCounted
+
+static var _enemies: Dictionary = {}
+static var _cache_valid := false
+
+
+static func _ensure_cache() -> void:
+	if _cache_valid:
+		return
+	_enemies = {}
+	var raider := EnemyDefinition.new()
+	raider.enemy_id = &"enemy_raider"
+	raider.display_name = "Raider"
+	raider.kind = SimulationIds.COMBATANT_KIND_RAIDER
+	raider.weapon_id = SimulationIds.ITEM_SWORD
+	raider.health = 60.0
+	raider.move_speed = 3.5
+	raider.body_color = Color(0.4, 0.13, 0.1, 1.0)
+	raider.accent_color = Color(0.55, 0.55, 0.58, 1.0)
+	_enemies[raider.enemy_id] = raider
+
+	var wolf := EnemyDefinition.new()
+	wolf.enemy_id = &"enemy_wolf"
+	wolf.display_name = "Wolf"
+	wolf.kind = SimulationIds.COMBATANT_KIND_WOLF
+	wolf.weapon_id = SimulationIds.ITEM_CLAW
+	wolf.health = 40.0
+	wolf.move_speed = 4.2
+	wolf.body_color = Color(0.32, 0.32, 0.34, 1.0)
+	wolf.accent_color = Color(0.95, 0.5, 0.12, 1.0)
+	wolf.visual_scale = Vector3(0.8, 0.8, 0.8)
+	_enemies[wolf.enemy_id] = wolf
+	_cache_valid = true
+
+
+static func invalidate_cache() -> void:
+	_cache_valid = false
+
+
+static func get_enemy(enemy_id: StringName) -> EnemyDefinition:
+	_ensure_cache()
+	return _enemies.get(enemy_id) as EnemyDefinition
+
+
+static func get_all() -> Array[EnemyDefinition]:
+	_ensure_cache()
+	var values: Array[EnemyDefinition] = []
+	for enemy in _enemies.values():
+		values.append(enemy)
+	return values

simulation/definitions/SimulationEnemies.gd.uid

@@ -0,0 +1 @@
+uid://daurjkbl4hcd8

simulation/definitions/SimulationIds.gd

@@ -18,6 +18,7 @@ const ACTION_WANDER := &"wander"
 const ACTION_DEPOSIT_FOOD := &"deposit_food"
 const ACTION_WITHDRAW_FOOD := &"withdraw_food"
 const ACTION_DEPOSIT_WOOD := &"deposit_wood"
+const ACTION_DEFEND := &"defend"
 
 const PROFESSION_FARMER := &"farmer"
 const PROFESSION_WOODCUTTER := &"woodcutter"

simulation/definitions/actions/defend.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" script_class="ActionDefinition" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://simulation/definitions/ActionDefinition.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+action_id = &"defend"
+display_name = "Defend"
+default_duration = 5.0
+preferred_profession_id = &"guard"
+target_type = &"activity"

simulation/state/player_state_record.gd

@@ -1,7 +1,9 @@
 class_name PlayerStateRecord
 extends RefCounted
 
-const SCHEMA_VERSION := 1
+const SCHEMA_VERSION := 2
+const LEGACY_SCHEMA_VERSION := 1
+const MAX_HEALTH := 100.0
 
 var data: Dictionary
 
@@ -18,6 +20,10 @@ static func create_default() -> PlayerStateRecord:
 				"schema_version": SCHEMA_VERSION,
 				"hunger": 40.0,
 				"energy": 100.0,
+				"health": MAX_HEALTH,
+				"max_health": MAX_HEALTH,
+				"downed": false,
+				"downed_ticks": 0,
 				"inventory": {},
 			}
 		)
@@ -25,15 +31,27 @@ static func create_default() -> PlayerStateRecord:
 
 
 static func from_dictionary(record_data: Dictionary) -> PlayerStateRecord:
-	if int(record_data.get("schema_version", -1)) != SCHEMA_VERSION:
+	var version := int(record_data.get("schema_version", -1))
+	if version == LEGACY_SCHEMA_VERSION:
+		record_data = _migrate_v1(record_data)
+	elif version != SCHEMA_VERSION:
 		return null
-	if not record_data.has_all(["hunger", "energy", "inventory"]):
+	if not record_data.has_all(
+		["hunger", "energy", "health", "max_health", "downed", "downed_ticks", "inventory"]
+	):
 		return null
 	if not record_data["inventory"] is Dictionary:
 		return null
 	var hunger := float(record_data["hunger"])
 	var energy := float(record_data["energy"])
-	if not is_finite(hunger) or not is_finite(energy):
+	var health := float(record_data["health"])
+	var max_health := float(record_data["max_health"])
+	if (
+		not is_finite(hunger)
+		or not is_finite(energy)
+		or not is_finite(health)
+		or not is_finite(max_health)
+	):
 		return null
 	var normalized_inventory := {}
 	for raw_item_id in record_data["inventory"]:
@@ -54,12 +72,26 @@ static func from_dictionary(record_data: Dictionary) -> PlayerStateRecord:
 				"schema_version": SCHEMA_VERSION,
 				"hunger": clampf(hunger, 0.0, 100.0),
 				"energy": clampf(energy, 0.0, 100.0),
+				"health": clampf(health, 0.0, max_health),
+				"max_health": max_health,
+				"downed": bool(record_data["downed"]),
+				"downed_ticks": int(record_data["downed_ticks"]),
 				"inventory": normalized_inventory,
 			}
 		)
 	)
 
 
+static func _migrate_v1(legacy_data: Dictionary) -> Dictionary:
+	var migrated := legacy_data.duplicate(true)
+	migrated["schema_version"] = SCHEMA_VERSION
+	migrated["health"] = MAX_HEALTH
+	migrated["max_health"] = MAX_HEALTH
+	migrated["downed"] = false
+	migrated["downed_ticks"] = 0
+	return migrated
+
+
 func get_hunger() -> float:
 	return clampf(float(data["hunger"]), 0.0, 100.0)
 
@@ -68,6 +100,22 @@ func get_energy() -> float:
 	return clampf(float(data["energy"]), 0.0, 100.0)
 
 
+func get_health() -> float:
+	return clampf(float(data["health"]), 0.0, get_max_health())
+
+
+func get_max_health() -> float:
+	return maxf(float(data["max_health"]), 1.0)
+
+
+func is_downed() -> bool:
+	return bool(data["downed"])
+
+
+func get_downed_ticks() -> int:
+	return int(data["downed_ticks"])
+
+
 func set_hunger(amount: float) -> void:
 	data["hunger"] = clampf(amount, 0.0, 100.0)
 
@@ -76,6 +124,28 @@ func set_energy(amount: float) -> void:
 	data["energy"] = clampf(amount, 0.0, 100.0)
 
 
+func take_damage(amount: float) -> float:
+	if not is_finite(amount) or amount <= 0.0 or is_downed():
+		return 0.0
+	var previous := get_health()
+	data["health"] = clampf(previous - amount, 0.0, get_max_health())
+	if get_health() <= 0.0:
+		data["downed"] = true
+		data["downed_ticks"] = 20
+	return previous - get_health()
+
+
+func advance_health() -> void:
+	if is_downed():
+		data["downed_ticks"] = maxi(get_downed_ticks() - 1, 0)
+		if get_downed_ticks() <= 0:
+			data["downed"] = false
+			data["health"] = get_max_health() * 0.5
+		return
+	if get_health() < get_max_health():
+		data["health"] = clampf(get_health() + 0.25, 0.0, get_max_health())
+
+
 func get_inventory_amount(item_id: StringName) -> float:
 	return float(data["inventory"].get(String(item_id), 0.0))
 

tests/combat_patterns_test.gd

@@ -0,0 +1,145 @@
+extends SceneTree
+
+var failures: Array[String] = []
+
+
+func _initialize() -> void:
+	call_deferred("_run")
+
+
+func _run() -> void:
+	_test_enemy_definitions()
+	_test_player_downing()
+	_test_defend_selection()
+	_finish()
+
+
+func _test_enemy_definitions() -> void:
+	var raider: EnemyDefinition = SimulationEnemies.get_enemy(&"enemy_raider")
+	var wolf: EnemyDefinition = SimulationEnemies.get_enemy(&"enemy_wolf")
+	_check(
+		(
+			raider != null
+			and wolf != null
+			and raider.kind == SimulationIds.COMBATANT_KIND_RAIDER
+			and wolf.kind == SimulationIds.COMBATANT_KIND_WOLF
+			and raider.weapon_id == SimulationIds.ITEM_SWORD
+			and wolf.weapon_id == SimulationIds.ITEM_CLAW
+		),
+		"Enemy definitions should describe raiders and wolves as data"
+	)
+	var manager := _create_manager(991)
+	var wolf_id: StringName = manager.spawn_wolf(Vector3.ZERO)
+	var wolf_combatant: CombatantStateRecord = manager.get_combatant(wolf_id)
+	_check(
+		(
+			is_equal_approx(wolf_combatant.get_health(), wolf.health)
+			and wolf_combatant.get_weapon_id() == wolf.weapon_id
+		),
+		"Spawned enemies should inherit their definition's health and weapon"
+	)
+	manager.free()
+
+
+func _test_player_downing() -> void:
+	var manager := _create_manager(992)
+	var player_state: PlayerStateRecord = manager.get_player_state()
+	_check(
+		is_equal_approx(player_state.get_health(), 100.0) and not player_state.is_downed(),
+		"The player should begin healthy and standing"
+	)
+	var wolf_id: StringName = manager.spawn_wolf(Vector3.ZERO)
+	manager.update_player_combatant(Vector3.ZERO)
+	for _tick in 3:
+		manager.simulate_tick()
+	_check(
+		player_state.get_health() < 100.0 and not player_state.is_downed(),
+		"A hungry wolf should wound the player during a hunt"
+	)
+	var downed := false
+	for _tick in 60:
+		manager.simulate_tick()
+		if player_state.is_downed():
+			downed = true
+			break
+	_check(downed, "A prolonged wolf attack should eventually down the player")
+	if downed:
+		for _tick in 22:
+			manager.simulate_tick()
+		_check(not player_state.is_downed(), "The downed player should recover and stand again")
+	_check(
+		player_state.get_health() > 0.0, "Recovery should restore the player to a fighting baseline"
+	)
+	manager.free()
+
+
+func _test_defend_selection() -> void:
+	var manager := _create_manager(993)
+	manager.clock.elapsed_ticks = 100
+	var tribe: FactionStateRecord = manager.get_faction(SimulationIds.FACTION_TRIBE)
+	tribe.set_war_plan(SimulationIds.WAR_PLAN_RAIDING, 1)
+	var defender: SimNPC = manager.npcs[0]
+	defender.strength = 9.0
+	defender.hunger = 20.0
+	defender.energy = 90.0
+	defender.is_starving = false
+	defender.mourning_ticks = 0
+	defender.inventory.clear()
+	defender.task_state = SimNPC.TASK_STATE_IDLE
+	defender.task_complete = true
+	manager.call("_select_action_if_idle", defender, SimNPC.TASK_STATE_IDLE)
+	_check(
+		(
+			defender.current_task == SimulationIds.ACTION_DEFEND
+			and manager.conflict_system.is_raiding()
+		),
+		"A strong idle villager should rally to defend during an active raid"
+	)
+	var worker: SimNPC = manager.npcs[1]
+	worker.strength = 1.0
+	worker.hunger = 20.0
+	worker.energy = 90.0
+	worker.is_starving = false
+	worker.mourning_ticks = 0
+	worker.inventory.clear()
+	worker.task_state = SimNPC.TASK_STATE_IDLE
+	worker.task_complete = true
+	manager.call("_select_action_if_idle", worker, SimNPC.TASK_STATE_IDLE)
+	_check(
+		worker.current_task != SimulationIds.ACTION_DEFEND,
+		"A weak non-guard villager should not be conscripted as a defender"
+	)
+	manager.free()
+
+
+func _create_manager(seed_value: int = 991) -> Node:
+	var manager: Node = load("res://simulation/SimulationManager.gd").new()
+	manager.simulation_seed = seed_value
+	manager.debug_logs = false
+	var home_positions: Array[Vector3] = [
+		Vector3(0.0, 0.0, 0.0),
+		Vector3(2.0, 0.0, 0.0),
+		Vector3(10.0, 0.0, 0.0),
+		Vector3(12.0, 0.0, 0.0),
+		Vector3(30.0, 0.0, 30.0),
+		Vector3(40.0, 0.0, 40.0),
+	]
+	manager.home_positions = home_positions
+	root.add_child(manager)
+	manager.set_process(false)
+	return manager
+
+
+func _finish() -> void:
+	if failures.is_empty():
+		print("[TEST] Combat patterns passed: enemy data, player downing, defend duty")
+		quit(0)
+		return
+	for failure in failures:
+		push_error("[TEST] " + failure)
+	quit(1)
+
+
+func _check(condition: bool, message: String) -> void:
+	if not condition:
+		failures.append(message)

tests/combat_patterns_test.gd.uid

@@ -0,0 +1 @@
+uid://c5x8usbsl6aku

tests/conflict_war_system_test.gd

@@ -17,6 +17,7 @@ func _run() -> void:
 
 func _test_combat_and_wolf() -> void:
 	var manager := _create_manager(981)
+	manager.update_player_combatant(Vector3(100.0, 0.0, 100.0))
 	var npc: SimNPC = manager.npcs[0]
 	npc.position = Vector3.ZERO
 	var npc_combatant: CombatantStateRecord = manager.get_combatant(

tests/simulation_definitions_test.gd

@@ -35,7 +35,7 @@ func _test_registry_integrity() -> void:
 			"Action lookup should return '%s'" % definition.action_id
 		)
 	_check(
-		action_ids.size() == 12, "Registry should contain all twelve executable prototype actions"
+		action_ids.size() == 13, "Registry should contain all thirteen executable prototype actions"
 	)
 
 	var profession_ids := SimulationDefinitions.get_profession_ids()

world/activity/ActivitySite.gd

@@ -48,7 +48,12 @@ func get_interaction_position() -> Vector3:
 
 
 func supports_action(candidate_action_id: StringName) -> bool:
-	return action_id == candidate_action_id
+	if action_id == candidate_action_id:
+		return true
+	return (
+		action_id == SimulationIds.ACTION_PATROL
+		and candidate_action_id == SimulationIds.ACTION_DEFEND
+	)
 
 
 func _update_presentation() -> void:

world/combat/HostileCombatant.gd

@@ -1,48 +1,39 @@
 class_name HostileCombatant
-extends Node3D
+extends CreatureVisual
 
-const FOLLOW_SPEED := 6.0
-const ARRIVE_DISTANCE := 0.5
-
-var combatant_id: StringName
 var combatant: CombatantStateRecord
 var simulation_manager: Node
-var is_dead_visual := false
-var flash_tween: Tween
-var spawn_scale := Vector3.ONE
+var _flash_tween: Tween
+var _spawn_tween: Tween
 
 
 func _ready() -> void:
-	spawn_scale = Vector3.ONE
+	add_to_group("grass_interactors")
 	scale = Vector3.ONE * 0.001
-	var tween := create_tween()
-	tween.set_trans(Tween.TRANS_BACK).set_ease(Tween.EASE_OUT)
-	tween.tween_property(self, "scale", Vector3.ONE, 0.28)
+	_spawn_tween = create_tween()
+	_spawn_tween.set_trans(Tween.TRANS_BACK).set_ease(Tween.EASE_OUT)
+	_spawn_tween.tween_property(self, "scale", Vector3.ONE, 0.28)
 
 
 func bind(combatant_id_value: StringName, manager: Node) -> void:
-	combatant_id = combatant_id_value
+	creature_id = combatant_id_value
 	simulation_manager = manager
-	combatant = manager.get_combatant(combatant_id) as CombatantStateRecord
+	combatant = manager.get_combatant(creature_id) as CombatantStateRecord
 	if combatant == null:
 		return
 	global_position = combatant.get_position()
-	_build_body(combatant.get_kind())
+	sim_position = combatant.get_position()
+	_build_from_definition()
 	combatant.changed.connect(_on_combatant_changed)
 
 
-func _process(delta: float) -> void:
+func _process(_delta: float) -> void:
 	if is_dead_visual or combatant == null or not is_instance_valid(combatant):
 		return
 	if not combatant.is_alive():
-		_play_death()
+		play_death()
 		return
-	var target_position := combatant.get_position()
-	var to_target := target_position - global_position
-	if to_target.length() <= ARRIVE_DISTANCE:
-		return
-	global_position += to_target.normalized() * minf(FOLLOW_SPEED * delta, to_target.length())
-	rotation.y = lerp_angle(rotation.y, atan2(to_target.x, to_target.z), delta * 8.0)
+	set_sim_position(combatant.get_position())
 
 
 func _on_combatant_changed(_state: CombatantStateRecord) -> void:
@@ -52,42 +43,54 @@ func _on_combatant_changed(_state: CombatantStateRecord) -> void:
 
 
 func _flash_hit() -> void:
-	if flash_tween != null and flash_tween.is_valid():
-		flash_tween.kill()
-	flash_tween = create_tween()
-	flash_tween.tween_property(self, "scale", Vector3.ONE * 0.85, 0.06)
-	flash_tween.tween_property(self, "scale", Vector3.ONE, 0.12)
+	if _flash_tween != null and _flash_tween.is_valid():
+		_flash_tween.kill()
+	_flash_tween = create_tween()
+	_flash_tween.tween_property(self, "scale", _definition_scale() * 0.85, 0.06)
+	_flash_tween.tween_property(self, "scale", _definition_scale(), 0.12)
 
 
-func _play_death() -> void:
+func play_death() -> void:
 	is_dead_visual = true
-	stop_travel_visual()
-	var tween := create_tween()
-	tween.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_IN)
-	tween.tween_property(self, "scale", Vector3(0.001, 0.001, 0.001), 0.45)
-	tween.tween_callback(queue_free)
+	super.play_death()
 
 
-func stop_travel_visual() -> void:
-	pass
+func _definition_scale() -> Vector3:
+	var definition := _enemy_definition()
+	return definition.visual_scale if definition != null else Vector3.ONE
 
 
-func _build_body(kind: StringName) -> void:
-	if kind == SimulationIds.COMBATANT_KIND_WOLF:
-		_build_wolf()
-	else:
-		_build_raider()
+func _build_from_definition() -> void:
+	var definition := _enemy_definition()
+	if definition != null:
+		move_speed = definition.move_speed
+		scale = definition.visual_scale
+		if definition.kind == SimulationIds.COMBATANT_KIND_WOLF:
+			_build_wolf(definition)
+		else:
+			_build_raider(definition)
 
 
-func _build_raider() -> void:
+func _enemy_definition() -> EnemyDefinition:
+	if combatant == null:
+		return null
+	var enemy_id: StringName = (
+		&"enemy_wolf"
+		if combatant.get_kind() == SimulationIds.COMBATANT_KIND_WOLF
+		else &"enemy_raider"
+	)
+	return SimulationEnemies.get_enemy(enemy_id)
+
+
+func _build_raider(definition: EnemyDefinition) -> void:
 	var tunic := StandardMaterial3D.new()
-	tunic.albedo_color = Color(0.4, 0.13, 0.1, 1.0)
+	tunic.albedo_color = definition.body_color
 	tunic.roughness = 0.85
 	var skin := StandardMaterial3D.new()
 	skin.albedo_color = Color(0.8, 0.58, 0.36, 1.0)
 	skin.roughness = 0.9
 	var metal := StandardMaterial3D.new()
-	metal.albedo_color = Color(0.55, 0.55, 0.58, 1.0)
+	metal.albedo_color = definition.accent_color
 	metal.roughness = 0.35
 
 	_add_mesh("Body", CylinderMesh.new(), Vector3(0.0, 1.1, 0.0), tunic)
@@ -104,12 +107,12 @@ func _build_raider() -> void:
 	)
 
 
-func _build_wolf() -> void:
+func _build_wolf(definition: EnemyDefinition) -> void:
 	var fur := StandardMaterial3D.new()
-	fur.albedo_color = Color(0.32, 0.32, 0.34, 1.0)
+	fur.albedo_color = definition.body_color
 	fur.roughness = 0.95
 	var eye := StandardMaterial3D.new()
-	eye.albedo_color = Color(0.95, 0.5, 0.12, 1.0)
+	eye.albedo_color = definition.accent_color
 	eye.roughness = 0.3
 
 	var body := SphereMesh.new()

world/combat/combat_presentation.gd

@@ -66,7 +66,7 @@ func _on_combatant_spawned(combatant_id: StringName) -> void:
 func _on_combatant_died(combatant_id: StringName) -> void:
 	var scene := hostiles.get(combatant_id) as HostileCombatant
 	if scene != null:
-		scene._play_death()
+		scene.play_death()
 	hostiles.erase(combatant_id)
 
 

world/creatures/creature_visual.gd

@@ -0,0 +1,127 @@
+class_name CreatureVisual
+extends Node3D
+
+signal position_changed(creature_id: StringName, active_position: Vector3)
+signal arrived_at_sim_position(creature_id: StringName)
+
+const ARRIVAL_DISTANCE := 0.5
+const PATH_RETARGET_DISTANCE := 0.8
+
+@export_range(0.5, 12.0, 0.1) var move_speed := 3.5
+@export_range(0.05, 1.0, 0.05) var waypoint_reached_distance := 0.3
+@export_range(1.0, 20.0, 0.5) var rotation_speed := 8.0
+
+var creature_id: StringName
+var sim_position := Vector3.INF
+var is_dead_visual := false
+
+var current_path := PackedVector3Array()
+var path_index := 0
+var path_target := Vector3.INF
+var path_request_id := 0
+var path_pending := false
+
+
+func _physics_process(delta: float) -> void:
+	if is_dead_visual:
+		return
+	if not sim_position.is_finite():
+		return
+	if _horizontal_distance_to(sim_position) <= ARRIVAL_DISTANCE:
+		_stop_moving()
+		return
+	_ensure_path()
+	if path_pending:
+		return
+	if current_path.is_empty() or path_index >= current_path.size():
+		_request_path()
+		return
+	var next_position := current_path[path_index]
+	var offset := next_position - global_position
+	if offset.length() <= waypoint_reached_distance:
+		path_index += 1
+		return
+	var direction := offset.normalized()
+	global_position = global_position.move_toward(next_position, move_speed * delta)
+	position_changed.emit(creature_id, global_position)
+	var target_angle := atan2(direction.x, direction.z)
+	rotation.y = lerp_angle(rotation.y, target_angle, rotation_speed * delta)
+
+
+func set_sim_position(position: Vector3) -> void:
+	if not position.is_finite():
+		return
+	var moved := (
+		not path_target.is_finite()
+		or _horizontal_distance_to_position(sim_position, position) > PATH_RETARGET_DISTANCE
+	)
+	sim_position = position
+	if moved and not is_dead_visual:
+		_request_path()
+
+
+func play_death() -> void:
+	is_dead_visual = true
+	_stop_moving()
+	var tween := create_tween()
+	tween.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_IN)
+	tween.tween_property(self, "scale", Vector3(0.001, 0.001, 0.001), 0.45)
+	tween.tween_callback(queue_free)
+
+
+func build_visual() -> void:
+	pass
+
+
+func _ensure_path() -> void:
+	if (
+		path_pending
+		or (
+			path_target.is_finite()
+			and (
+				_horizontal_distance_to_position(path_target, sim_position)
+				<= PATH_RETARGET_DISTANCE
+			)
+		)
+	):
+		return
+	_request_path()
+
+
+func _request_path() -> void:
+	path_request_id += 1
+	var request_id := path_request_id
+	path_target = sim_position
+	current_path = PackedVector3Array()
+	path_index = 0
+	path_pending = true
+	await get_tree().physics_frame
+	if request_id != path_request_id or is_dead_visual:
+		return
+	if _horizontal_distance_to(sim_position) <= ARRIVAL_DISTANCE:
+		path_pending = false
+		return
+	current_path = NavigationServer3D.map_get_path(
+		get_world_3d().navigation_map, global_position, sim_position, true
+	)
+	path_pending = false
+	if current_path.is_empty():
+		_stop_moving()
+
+
+func _stop_moving() -> void:
+	path_request_id += 1
+	current_path = PackedVector3Array()
+	path_index = 0
+	path_pending = false
+	path_target = Vector3.INF
+
+
+func _horizontal_distance_to(target_position: Vector3) -> float:
+	return _horizontal_distance_to_position(global_position, target_position)
+
+
+static func _horizontal_distance_to_position(from_position: Vector3, to_position: Vector3) -> float:
+	return Vector2(from_position.x, from_position.z).distance_to(
+		Vector2(to_position.x, to_position.z)
+	)

world/creatures/creature_visual.gd.uid

@@ -0,0 +1 @@
+uid://6r66un51bane