feat: define reusable animal archetypes

simulation/animals/AnimalCatalog.gd

@@ -0,0 +1,93 @@
+class_name AnimalCatalog
+extends Resource
+
+const CORE_CATALOG_PATH := "res://simulation/animals/definitions/core_animals.tres"
+
+@export var animals: Array[AnimalDefinition] = []
+
+var _definitions_by_id: Dictionary = {}
+var _definition_ids: Array[StringName] = []
+var _errors: Array[String] = []
+
+
+static func create_core() -> AnimalCatalog:
+	var catalog := load(CORE_CATALOG_PATH) as AnimalCatalog
+	if catalog != null:
+		catalog.rebuild()
+	return catalog
+
+
+func rebuild() -> Array[String]:
+	_definitions_by_id.clear()
+	_definition_ids.clear()
+	_errors.clear()
+	for definition in animals:
+		if definition == null:
+			_errors.append("Animal catalog contains a null definition")
+			continue
+		for error in definition.validate():
+			_errors.append("Animal '%s': %s" % [definition.animal_definition_id, error])
+		if _definitions_by_id.has(definition.animal_definition_id):
+			_errors.append("Duplicate animal definition '%s'" % definition.animal_definition_id)
+		else:
+			_definitions_by_id[definition.animal_definition_id] = definition
+			_definition_ids.append(definition.animal_definition_id)
+	_definition_ids.sort_custom(_id_less)
+	_errors.sort()
+	return get_errors()
+
+
+func is_valid() -> bool:
+	return rebuild().is_empty()
+
+
+func get_errors() -> Array[String]:
+	return _errors.duplicate()
+
+
+func has_definition(animal_definition_id: StringName) -> bool:
+	_ensure_built()
+	return _definitions_by_id.has(animal_definition_id)
+
+
+func get_definition(animal_definition_id: StringName) -> AnimalDefinition:
+	_ensure_built()
+	return _definitions_by_id.get(animal_definition_id) as AnimalDefinition
+
+
+func matches_identity(animal_definition_id: StringName, species_id: StringName) -> bool:
+	var definition := get_definition(animal_definition_id)
+	return definition != null and definition.species_id == species_id
+
+
+func get_definition_ids() -> Array[StringName]:
+	_ensure_built()
+	return _definition_ids.duplicate()
+
+
+func get_definitions_for_behavior(behavior_id: StringName) -> Array[AnimalDefinition]:
+	_ensure_built()
+	var result: Array[AnimalDefinition] = []
+	for definition_id in _definition_ids:
+		var definition := _definitions_by_id[definition_id] as AnimalDefinition
+		if definition.behavior_id == behavior_id:
+			result.append(definition)
+	return result
+
+
+func find_definition_for_species(species_id: StringName) -> AnimalDefinition:
+	_ensure_built()
+	for definition_id in _definition_ids:
+		var definition := _definitions_by_id[definition_id] as AnimalDefinition
+		if definition.species_id == species_id:
+			return definition
+	return null
+
+
+func _ensure_built() -> void:
+	if _definitions_by_id.is_empty() and not animals.is_empty():
+		rebuild()
+
+
+static func _id_less(left: StringName, right: StringName) -> bool:
+	return String(left) < String(right)

simulation/animals/AnimalCatalog.gd.uid

@@ -0,0 +1 @@
+uid://bbd405aahq78w

simulation/animals/AnimalDefinition.gd

@@ -0,0 +1,94 @@
+class_name AnimalDefinition
+extends Resource
+
+const BEHAVIOR_GRAZER_ROUTINE := &"grazer_routine"
+
+@export var animal_definition_id: StringName
+@export var species_id: StringName
+@export var display_name: String
+@export var behavior_id: StringName = BEHAVIOR_GRAZER_ROUTINE
+@export var supported_action_ids: Array[StringName] = []
+@export_file("*.tscn") var presentation_scene_path: String
+@export_range(0.1, 10.0, 0.1) var movement_speed := 1.6
+@export var visual_scale := Vector3.ONE
+@export var body_scale := Vector3.ONE
+@export var fluff_scale := Vector3.ONE
+@export var show_horns := true
+@export var show_beard := true
+
+
+func validate() -> Array[String]:
+	var errors: Array[String] = []
+	if not is_valid_stable_id(animal_definition_id):
+		errors.append("animal_definition_id is invalid")
+	if not is_valid_stable_id(species_id):
+		errors.append("species_id is invalid for '%s'" % animal_definition_id)
+	if display_name.strip_edges().is_empty():
+		errors.append("display_name is empty for '%s'" % animal_definition_id)
+	if behavior_id != BEHAVIOR_GRAZER_ROUTINE:
+		errors.append(
+			"behavior_id '%s' is unsupported for '%s'" % [behavior_id, animal_definition_id]
+		)
+	if (
+		presentation_scene_path.is_empty()
+		or not presentation_scene_path.begins_with("res://")
+		or presentation_scene_path.get_extension() != "tscn"
+		or not ResourceLoader.exists(presentation_scene_path, "PackedScene")
+	):
+		errors.append("presentation_scene_path is invalid for '%s'" % animal_definition_id)
+	if not is_finite(movement_speed) or movement_speed <= 0.0:
+		errors.append("movement_speed must be positive for '%s'" % animal_definition_id)
+	if (
+		not visual_scale.is_finite()
+		or visual_scale.x <= 0.0
+		or visual_scale.y <= 0.0
+		or visual_scale.z <= 0.0
+	):
+		errors.append("visual_scale must be finite and positive for '%s'" % animal_definition_id)
+	if (
+		not body_scale.is_finite()
+		or body_scale.x <= 0.0
+		or body_scale.y <= 0.0
+		or body_scale.z <= 0.0
+	):
+		errors.append("body_scale must be finite and positive for '%s'" % animal_definition_id)
+	if (
+		not fluff_scale.is_finite()
+		or fluff_scale.x <= 0.0
+		or fluff_scale.y <= 0.0
+		or fluff_scale.z <= 0.0
+	):
+		errors.append("fluff_scale must be finite and positive for '%s'" % animal_definition_id)
+	var seen: Dictionary = {}
+	for action_id in supported_action_ids:
+		if not is_valid_stable_id(action_id):
+			errors.append("supported action ID is invalid for '%s'" % animal_definition_id)
+		elif seen.has(action_id):
+			errors.append(
+				"duplicate supported action '%s' for '%s'" % [action_id, animal_definition_id]
+			)
+		else:
+			seen[action_id] = true
+	return errors
+
+
+func supports_action(action_id: StringName) -> bool:
+	return action_id in supported_action_ids
+
+
+static func is_valid_stable_id(value: Variant) -> bool:
+	if value is not String and value is not StringName:
+		return false
+	var text := String(value)
+	if text.is_empty() or text.length() > 96:
+		return false
+	for character in text:
+		var code := character.unicode_at(0)
+		if not (
+			(code >= 48 and code <= 57)
+			or (code >= 65 and code <= 90)
+			or (code >= 97 and code <= 122)
+			or character in ["_", "-", ".", ":"]
+		):
+			return false
+	return true

simulation/animals/AnimalDefinition.gd.uid

@@ -0,0 +1 @@
+uid://cg5ou2nnnvcr2

simulation/animals/AnimalFactory.gd

@@ -0,0 +1,117 @@
+class_name AnimalFactory
+extends RefCounted
+
+const CONFIGURATION_KEYS := [
+	"initial_hunger",
+	"initial_enabled",
+	"can_npcs_feed",
+	"can_player_feed",
+	"debug_label_enabled",
+	"initial_routine_site_id",
+	"initial_next_routine_tick",
+]
+
+var last_error := ""
+
+var _catalog: AnimalCatalog
+
+
+func _init(catalog: AnimalCatalog = null) -> void:
+	_catalog = catalog if catalog != null else AnimalCatalog.create_core()
+	if _catalog == null:
+		last_error = "Animal catalog could not be loaded"
+	elif not _catalog.rebuild().is_empty():
+		last_error = "; ".join(_catalog.get_errors())
+
+
+func get_catalog() -> AnimalCatalog:
+	return _catalog
+
+
+func create_presentation(
+	animal_definition_id: StringName,
+	animal_id: StringName,
+	display_name: String,
+	configuration: Dictionary = {}
+) -> AnimalNode:
+	last_error = ""
+	if _catalog == null or not _catalog.has_definition(animal_definition_id):
+		return _fail("Unknown animal definition '%s'" % animal_definition_id)
+	if not AnimalDefinition.is_valid_stable_id(animal_id):
+		return _fail("animal_id is invalid")
+	if display_name.strip_edges().is_empty():
+		return _fail("display_name is empty")
+	if not _configuration_is_valid(configuration):
+		return null
+	var definition := _catalog.get_definition(animal_definition_id)
+	var presentation_scene := load(definition.presentation_scene_path) as PackedScene
+	var node := (
+		presentation_scene.instantiate() as AnimalNode if presentation_scene != null else null
+	)
+	if node == null:
+		return _fail(
+			"Presentation scene for '%s' must instantiate AnimalNode" % animal_definition_id
+		)
+	if not node.apply_animal_definition(definition):
+		node.free()
+		return _fail("Presentation rejected definition '%s'" % animal_definition_id)
+	node.animal_id = animal_id
+	node.display_name = display_name
+	_apply_configuration(node, configuration)
+	return node
+
+
+func _configuration_is_valid(configuration: Dictionary) -> bool:
+	for key in configuration:
+		if (key is not String and key is not StringName) or String(key) not in CONFIGURATION_KEYS:
+			return _fail_bool("Unknown animal presentation configuration '%s'" % key)
+	if configuration.has("initial_hunger"):
+		if (
+			configuration["initial_hunger"] is not int
+			and configuration["initial_hunger"] is not float
+		):
+			return _fail_bool("initial_hunger must be numeric")
+		var hunger := float(configuration["initial_hunger"])
+		if not is_finite(hunger) or hunger < 0.0 or hunger > 100.0:
+			return _fail_bool("initial_hunger must be between 0 and 100")
+	if (
+		configuration.has("initial_routine_site_id")
+		and not AnimalDefinition.is_valid_stable_id(configuration["initial_routine_site_id"])
+	):
+		return _fail_bool("initial_routine_site_id is invalid")
+	if configuration.has("initial_next_routine_tick"):
+		if configuration["initial_next_routine_tick"] is not int:
+			return _fail_bool("initial_next_routine_tick must be an int")
+		if int(configuration["initial_next_routine_tick"]) < 0:
+			return _fail_bool("initial_next_routine_tick must not be negative")
+	for key in ["initial_enabled", "can_npcs_feed", "can_player_feed", "debug_label_enabled"]:
+		if configuration.has(key) and configuration[key] is not bool:
+			return _fail_bool("%s must be a bool" % key)
+	return true
+
+
+func _apply_configuration(node: AnimalNode, configuration: Dictionary) -> void:
+	if configuration.has("initial_hunger"):
+		node.initial_hunger = float(configuration["initial_hunger"])
+	if configuration.has("initial_enabled"):
+		node.initial_enabled = bool(configuration["initial_enabled"])
+	if configuration.has("can_npcs_feed"):
+		node.can_npcs_feed = bool(configuration["can_npcs_feed"])
+	if configuration.has("can_player_feed"):
+		node.can_player_feed = bool(configuration["can_player_feed"])
+	if configuration.has("debug_label_enabled"):
+		node.debug_label_enabled = bool(configuration["debug_label_enabled"])
+	if configuration.has("initial_routine_site_id"):
+		node.initial_routine_site_id = StringName(configuration["initial_routine_site_id"])
+	if configuration.has("initial_next_routine_tick"):
+		node.initial_next_routine_tick = int(configuration["initial_next_routine_tick"])
+
+
+func _fail(message: String) -> AnimalNode:
+	last_error = message
+	return null
+
+
+func _fail_bool(message: String) -> bool:
+	last_error = message
+	return false

simulation/animals/AnimalFactory.gd.uid

@@ -0,0 +1 @@
+uid://cgpayfff6eeug

simulation/animals/animal_care_system.gd

@@ -29,6 +29,7 @@ var states: Dictionary = {}
 var economy: RefCounted
 var active_world_adapter: Node
 var current_tick := 0
+var _animal_catalog: AnimalCatalog
 
 
 func configure(economy_service: RefCounted, world_adapter: Node) -> void:
@@ -36,6 +37,19 @@ func configure(economy_service: RefCounted, world_adapter: Node) -> void:
 	active_world_adapter = world_adapter
 
 
+func configure_animal_catalog(catalog: AnimalCatalog) -> bool:
+	if catalog == null or not catalog.rebuild().is_empty():
+		return false
+	_animal_catalog = catalog
+	return true
+
+
+func get_animal_catalog() -> AnimalCatalog:
+	if _animal_catalog == null:
+		_animal_catalog = AnimalCatalog.create_core()
+	return _animal_catalog
+
+
 func advance(simulation_tick: int) -> void:
 	current_tick = simulation_tick
 	var animal_ids: Array = states.keys()
@@ -67,15 +81,23 @@ func register_node(node: AnimalNode) -> bool:
 		push_error("AnimalCareSystem: Animal ID '%s' collides with a world target" % node.animal_id)
 		return false
 	var action_definition := SimulationDefinitions.get_action(SimulationIds.ACTION_FEED_ANIMAL)
+	var animal_catalog := get_animal_catalog()
+	var animal_definition := (
+		animal_catalog.get_definition(node.animal_definition_id) if animal_catalog != null else null
+	)
 	if (
 		action_definition == null
 		or action_definition.target_type != SimulationIds.TARGET_ANIMAL
-		or node.species_id != SimulationIds.SPECIES_GOAT
+		or animal_definition == null
+		or animal_definition.behavior_id != AnimalDefinition.BEHAVIOR_GRAZER_ROUTINE
+		or animal_definition.species_id != node.species_id
+		or not animal_definition.supports_action(SimulationIds.ACTION_FEED_ANIMAL)
+		or not node.supports_action(SimulationIds.ACTION_FEED_ANIMAL)
 	):
 		push_error(
 			(
-				"AnimalCareSystem: AnimalNode '%s' has an invalid feed action or species '%s'"
-				% [node.animal_id, node.species_id]
+				"AnimalCareSystem: AnimalNode '%s' has invalid definition '%s' or species '%s'"
+				% [node.animal_id, node.animal_definition_id, node.species_id]
 			)
 		)
 		return false

simulation/animals/definitions/core_animals.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="AnimalCatalog" load_steps=4 format=3]
+
+[ext_resource type="Script" path="res://simulation/animals/AnimalCatalog.gd" id="1_catalog"]
+[ext_resource type="Resource" path="res://simulation/animals/definitions/domestic_goat.tres" id="2_goat"]
+[ext_resource type="Resource" path="res://simulation/animals/definitions/domestic_sheep.tres" id="3_sheep"]
+
+[resource]
+script = ExtResource("1_catalog")
+animals = Array[ExtResource("2_goat")]([ExtResource("2_goat"), ExtResource("3_sheep")])

simulation/animals/definitions/domestic_goat.tres

@@ -0,0 +1,18 @@
+[gd_resource type="Resource" script_class="AnimalDefinition" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://simulation/animals/AnimalDefinition.gd" id="1_definition"]
+
+[resource]
+script = ExtResource("1_definition")
+animal_definition_id = &"domestic_goat"
+species_id = &"goat"
+display_name = "Domestic goat"
+behavior_id = &"grazer_routine"
+supported_action_ids = Array[StringName]([&"feed_animal"])
+presentation_scene_path = "res://world/animals/grazer/cozy_grazer.tscn"
+movement_speed = 1.6
+visual_scale = Vector3(1, 1, 1)
+body_scale = Vector3(1, 1, 1)
+fluff_scale = Vector3(1, 1, 1)
+show_horns = true
+show_beard = true

simulation/animals/definitions/domestic_sheep.tres

@@ -0,0 +1,18 @@
+[gd_resource type="Resource" script_class="AnimalDefinition" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://simulation/animals/AnimalDefinition.gd" id="1_definition"]
+
+[resource]
+script = ExtResource("1_definition")
+animal_definition_id = &"domestic_sheep"
+species_id = &"sheep"
+display_name = "Domestic sheep"
+behavior_id = &"grazer_routine"
+supported_action_ids = Array[StringName]([&"feed_animal"])
+presentation_scene_path = "res://world/animals/grazer/cozy_grazer.tscn"
+movement_speed = 1.4
+visual_scale = Vector3(1.08, 1.04, 1.08)
+body_scale = Vector3(1.12, 1.08, 1.12)
+fluff_scale = Vector3(1.16, 1.14, 1.16)
+show_horns = false
+show_beard = false

simulation/state/animal_state_record.gd

@@ -4,12 +4,14 @@ extends RefCounted
 signal changed(state: AnimalStateRecord)
 signal fed(state: AnimalStateRecord, actor_id: int)
 
-const SCHEMA_VERSION := 2
+const SCHEMA_VERSION := 3
+const ROUTINE_SCHEMA_VERSION := 2
 const LEGACY_SCHEMA_VERSION := 1
 const HUNGER_PER_TICK := 0.125
 const FEED_THRESHOLD := 65.0
 const HUNGER_RELIEF := 55.0
 const NEVER_FED_TICK := -1
+const LEGACY_DEFINITION_BY_SPECIES := {"goat": "domestic_goat"}
 
 var data: Dictionary
 
@@ -25,6 +27,7 @@ static func create_from_node(node: AnimalNode) -> AnimalStateRecord:
 			{
 				"schema_version": SCHEMA_VERSION,
 				"animal_id": String(node.animal_id),
+				"animal_definition_id": String(node.animal_definition_id),
 				"display_name": node.display_name,
 				"species_id": String(node.species_id),
 				"position":
@@ -49,6 +52,8 @@ static func from_dictionary(record_data: Dictionary) -> AnimalStateRecord:
 	var version := int(record_data.get("schema_version", -1))
 	if version == LEGACY_SCHEMA_VERSION:
 		record_data = _migrate_legacy(record_data)
+	elif version == ROUTINE_SCHEMA_VERSION:
+		record_data = _migrate_definition_identity(record_data)
 	elif version != SCHEMA_VERSION:
 		return null
 	if not (
@@ -56,6 +61,7 @@ static func from_dictionary(record_data: Dictionary) -> AnimalStateRecord:
 		. has_all(
 			[
 				"animal_id",
+				"animal_definition_id",
 				"display_name",
 				"species_id",
 				"position",
@@ -75,6 +81,7 @@ static func from_dictionary(record_data: Dictionary) -> AnimalStateRecord:
 	):
 		return null
 	var animal_id := String(record_data["animal_id"])
+	var animal_definition_id := String(record_data["animal_definition_id"])
 	var display_name := String(record_data["display_name"])
 	var species_id := String(record_data["species_id"])
 	var saved_position = record_data["position"]
@@ -87,9 +94,12 @@ static func from_dictionary(record_data: Dictionary) -> AnimalStateRecord:
 	var has_travel_target := bool(record_data["has_travel_target"])
 	var next_routine_tick := int(record_data["next_routine_tick"])
 	var enabled := bool(record_data["enabled"])
-	if animal_id.is_empty() or display_name.is_empty() or species_id.is_empty():
-		return null
-	if StringName(species_id) != SimulationIds.SPECIES_GOAT:
+	if (
+		not AnimalDefinition.is_valid_stable_id(animal_id)
+		or not AnimalDefinition.is_valid_stable_id(animal_definition_id)
+		or display_name.is_empty()
+		or not AnimalDefinition.is_valid_stable_id(species_id)
+	):
 		return null
 	if not saved_position is Array or saved_position.size() != 3:
 		return null
@@ -120,6 +130,7 @@ static func from_dictionary(record_data: Dictionary) -> AnimalStateRecord:
 	var normalized := record_data.duplicate(true)
 	normalized["schema_version"] = SCHEMA_VERSION
 	normalized["animal_id"] = animal_id
+	normalized["animal_definition_id"] = animal_definition_id
 	normalized["display_name"] = display_name
 	normalized["species_id"] = species_id
 	normalized["position"] = [
@@ -145,7 +156,8 @@ func apply_definition(node: AnimalNode) -> bool:
 	if node == null or node.animal_id != get_animal_id():
 		return false
 	return (
-		node.display_name == get_display_name()
+		node.animal_definition_id == get_animal_definition_id()
+		and node.display_name == get_display_name()
 		and node.species_id == get_species_id()
 		and node.can_npcs_feed == can_npc_feed()
 		and node.can_player_feed == can_player_feed_animal()
@@ -156,6 +168,10 @@ func get_animal_id() -> StringName:
 	return StringName(data["animal_id"])
 
 
+func get_animal_definition_id() -> StringName:
+	return StringName(data["animal_definition_id"])
+
+
 func get_display_name() -> String:
 	return String(data["display_name"])
 
@@ -350,10 +366,18 @@ func to_dictionary() -> Dictionary:
 
 static func _migrate_legacy(record_data: Dictionary) -> Dictionary:
 	var migrated := record_data.duplicate(true)
-	migrated["schema_version"] = SCHEMA_VERSION
+	migrated["schema_version"] = ROUTINE_SCHEMA_VERSION
 	migrated["routine_site_id"] = ""
 	migrated["travel_target_site_id"] = ""
 	migrated["travel_target_position"] = [0.0, 0.0, 0.0]
 	migrated["has_travel_target"] = false
 	migrated["next_routine_tick"] = 0
+	return _migrate_definition_identity(migrated)
+
+
+static func _migrate_definition_identity(record_data: Dictionary) -> Dictionary:
+	var migrated := record_data.duplicate(true)
+	migrated["schema_version"] = SCHEMA_VERSION
+	var species_id := String(migrated.get("species_id", ""))
+	migrated["animal_definition_id"] = String(LEGACY_DEFINITION_BY_SPECIES.get(species_id, ""))
 	return migrated

tests/animal_definition_contract_test.gd

@@ -0,0 +1,234 @@
+extends SceneTree
+
+
+class FakeRoutineWorld:
+	extends Node
+
+	func get_animal_routine_sites(
+		species_id: StringName, animal_id: StringName
+	) -> Array[Dictionary]:
+		return [
+			{
+				"site_id": &"%s_%s_meadow" % [species_id, animal_id],
+				"position": Vector3(3.0 if species_id == &"goat" else -3.0, 0.0, 2.0),
+			}
+		]
+
+
+var failures: Array[String] = []
+
+
+func _initialize() -> void:
+	call_deferred("_run")
+
+
+func _run() -> void:
+	var catalog := AnimalCatalog.create_core()
+	_check(catalog != null and catalog.rebuild().is_empty(), "Core animal content should validate")
+	if catalog == null:
+		_finish()
+		return
+	var definition_ids := catalog.get_definition_ids()
+	_check(
+		definition_ids == [&"domestic_goat", &"domestic_sheep"],
+		"Animal definitions should iterate in deterministic stable-ID order"
+	)
+	var goat_definition := catalog.get_definition(&"domestic_goat")
+	var sheep_definition := catalog.get_definition(&"domestic_sheep")
+	_check(
+		(
+			goat_definition != null
+			and sheep_definition != null
+			and goat_definition.species_id == &"goat"
+			and sheep_definition.species_id == &"sheep"
+		),
+		"Goat and sheep should be distinct data definitions"
+	)
+	if goat_definition == null or sheep_definition == null:
+		_finish()
+		return
+	_check(
+		(
+			goat_definition.behavior_id == AnimalDefinition.BEHAVIOR_GRAZER_ROUTINE
+			and sheep_definition.behavior_id == AnimalDefinition.BEHAVIOR_GRAZER_ROUTINE
+			and goat_definition.presentation_scene_path == sheep_definition.presentation_scene_path
+		),
+		"Both animals should reuse one grazer behavior and presentation contract"
+	)
+	_check(
+		(
+			goat_definition.supports_action(&"feed_animal")
+			and sheep_definition.supports_action(&"feed_animal")
+		),
+		"Both data definitions should advertise the existing care action"
+	)
+
+	var generic_scene := load(goat_definition.presentation_scene_path) as PackedScene
+	var generic := generic_scene.instantiate() as AnimalNode
+	_check(
+		(
+			generic != null
+			and generic.animal_id.is_empty()
+			and generic.animal_definition_id.is_empty()
+			and generic.species_id.is_empty()
+			and generic.display_name == "Animal"
+			and (generic.get_node("DebugLabel") as Label3D).text == "Animal"
+		),
+		"The reusable grazer scene should contain no Dunja-specific identity"
+	)
+	if generic != null:
+		generic.free()
+
+	var factory := AnimalFactory.new(catalog)
+	var goat := (
+		factory
+		. create_presentation(
+			&"domestic_goat",
+			&"test_goat",
+			"Dunja Test",
+			{
+				"initial_hunger": 10.0,
+				"initial_routine_site_id": &"goat_barn",
+				"initial_next_routine_tick": 0,
+				"debug_label_enabled": false,
+			}
+		)
+	)
+	var sheep := (
+		factory
+		. create_presentation(
+			&"domestic_sheep",
+			&"test_sheep",
+			"Mila Test",
+			{
+				"initial_hunger": 10.0,
+				"initial_routine_site_id": &"sheep_fold",
+				"initial_next_routine_tick": 0,
+				"debug_label_enabled": false,
+			}
+		)
+	)
+	_check(goat != null and sheep != null, "The shared factory should create both definitions")
+	if goat == null or sheep == null:
+		if goat != null:
+			goat.free()
+		if sheep != null:
+			sheep.free()
+		_finish()
+		return
+	root.add_child(goat)
+	root.add_child(sheep)
+	_check(
+		(
+			goat.get_script() == sheep.get_script()
+			and goat.get_node("Visual").get_script() == sheep.get_node("Visual").get_script()
+		),
+		"A second animal should add no movement or visual-controller system"
+	)
+	_check(
+		(
+			goat.get_node("Visual/HeadRoot/HornLeft").visible
+			and not sheep.get_node("Visual/HeadRoot/HornLeft").visible
+			and not sheep.get_node("Visual/HeadRoot/Beard").visible
+		),
+		"Definition data should configure bounded presentation differences"
+	)
+
+	var routine_world := FakeRoutineWorld.new()
+	root.add_child(routine_world)
+	var care := AnimalCareSystem.new()
+	care.configure(null, routine_world)
+	_check(care.configure_animal_catalog(catalog), "Animal care should accept the isolated catalog")
+	var goat_registered := care.register_node(goat)
+	var sheep_registered := care.register_node(sheep)
+	_check(
+		goat_registered and sheep_registered,
+		"Existing AnimalCareSystem should bind both shared-contract nodes"
+	)
+	var goat_state := care.get_state(&"test_goat")
+	var sheep_state := care.get_state(&"test_sheep")
+	_check(
+		(
+			goat_state != null
+			and sheep_state != null
+			and goat_state.get_animal_definition_id() == &"domestic_goat"
+			and sheep_state.get_animal_definition_id() == &"domestic_sheep"
+			and goat_state.get_script() == sheep_state.get_script()
+		),
+		"Authoritative records should retain stable animal definition IDs"
+	)
+	if goat_state != null and sheep_state != null:
+		var restored_sheep := AnimalStateRecord.from_dictionary(sheep_state.to_dictionary())
+		_check(
+			(
+				restored_sheep != null
+				and restored_sheep.get_animal_definition_id() == &"domestic_sheep"
+				and restored_sheep.get_species_id() == &"sheep"
+			),
+			"The second animal should round-trip through the existing animal record system"
+		)
+		var started: Array[StringName] = []
+		care.routine_started.connect(
+			func(animal_id: StringName, _site_id: StringName, _position: Vector3) -> void:
+				started.append(animal_id)
+		)
+		care.advance(0)
+		started.sort_custom(
+			func(left: StringName, right: StringName) -> bool: return String(left) < String(right)
+		)
+		_check(
+			(
+				started == [&"test_goat", &"test_sheep"]
+				and goat_state.has_active_travel_target()
+				and sheep_state.has_active_travel_target()
+			),
+			"Goat and sheep should execute the same deterministic routine scheduler"
+		)
+		_test_nested_record_migration(goat_state)
+
+	goat.free()
+	sheep.free()
+	routine_world.free()
+	_finish()
+
+
+func _test_nested_record_migration(goat_state: AnimalStateRecord) -> void:
+	var previous_record := goat_state.to_dictionary()
+	previous_record["schema_version"] = AnimalStateRecord.ROUTINE_SCHEMA_VERSION
+	previous_record.erase("animal_definition_id")
+	var migrated := AnimalStateRecord.from_dictionary(previous_record)
+	_check(
+		(
+			migrated != null
+			and migrated.get_animal_definition_id() == &"domestic_goat"
+			and migrated.to_dictionary()["schema_version"] == AnimalStateRecord.SCHEMA_VERSION
+		),
+		"Nested v2 animal records should migrate to stable goat definition identity"
+	)
+	var mismatched := goat_state.to_dictionary()
+	mismatched["animal_definition_id"] = "domestic_sheep"
+	var mismatched_record := AnimalStateRecord.from_dictionary(mismatched)
+	_check(
+		(
+			mismatched_record != null
+			and not AnimalCatalog.create_core().matches_identity(
+				mismatched_record.get_animal_definition_id(), mismatched_record.get_species_id()
+			)
+		),
+		"Data-only restore should remain extensible while the catalog detects identity mismatches"
+	)
+
+
+func _check(condition: bool, message: String) -> void:
+	if not condition:
+		failures.append(message)
+
+
+func _finish() -> void:
+	if failures.is_empty():
+		print("[TEST] Shared animal definition contract passed")
+		quit(0)
+		return
+	for failure in failures:
+		push_error("[TEST] " + failure)
+	quit(1)

tests/animal_definition_contract_test.gd.uid

@@ -0,0 +1 @@
+uid://dad5kvxbeg72u

world/animals/animal_node.gd

@@ -9,10 +9,13 @@ signal routine_arrived(animal_id: StringName, site_id: StringName, arrival_posit
 signal navigation_failed(animal_id: StringName, site_id: StringName)
 
 static var _all: Array[AnimalNode] = []
+static var _core_animal_catalog: AnimalCatalog
 
 @export var animal_id: StringName
 @export var display_name := "Animal"
-@export var species_id: StringName = SimulationIds.SPECIES_GOAT
+@export var animal_definition_id: StringName
+@export var species_id: StringName
+@export var supported_action_ids: Array[StringName] = []
 @export_range(0.0, 100.0, 0.5) var initial_hunger := 70.0
 @export var initial_enabled := true
 @export var can_npcs_feed := true
@@ -35,9 +38,20 @@ var navigation_target := Vector3.INF
 var navigation_request_id := 0
 var path_pending := false
 var has_reported_navigation_result := true
+var _animal_definition: AnimalDefinition
 
 
 func _ready() -> void:
+	if not _ensure_animal_definition():
+		push_error(
+			(
+				"AnimalNode at %s has invalid animal_definition_id '%s'"
+				% [get_path(), animal_definition_id]
+			)
+		)
+		initial_enabled = false
+		_update_presentation()
+		return
 	if animal_id.is_empty():
 		push_error("AnimalNode at %s has empty animal_id" % get_path())
 		initial_enabled = false
@@ -69,7 +83,11 @@ func _exit_tree() -> void:
 
 
 func bind_state(animal_state: AnimalStateRecord) -> bool:
-	if animal_state == null or animal_state.get_animal_id() != animal_id:
+	if (
+		animal_state == null
+		or animal_state.get_animal_id() != animal_id
+		or animal_state.get_animal_definition_id() != animal_definition_id
+	):
 		return false
 	_disconnect_state()
 	state = animal_state
@@ -111,7 +129,42 @@ func get_interaction_position() -> Vector3:
 
 
 func supports_action(action_id: StringName) -> bool:
-	return action_id == SimulationIds.ACTION_FEED_ANIMAL
+	return action_id in supported_action_ids
+
+
+func apply_animal_definition(definition: AnimalDefinition) -> bool:
+	if definition == null or not definition.validate().is_empty():
+		return false
+	if state != null and state.get_animal_definition_id() != definition.animal_definition_id:
+		return false
+	_animal_definition = definition
+	animal_definition_id = definition.animal_definition_id
+	species_id = definition.species_id
+	supported_action_ids = definition.supported_action_ids.duplicate()
+	move_speed = definition.movement_speed
+	var visual := get_node_or_null("Visual")
+	if visual != null and visual.has_method("apply_animal_definition"):
+		return bool(visual.apply_animal_definition(definition))
+	return true
+
+
+func get_animal_definition() -> AnimalDefinition:
+	return _animal_definition
+
+
+func _ensure_animal_definition() -> bool:
+	if (
+		_animal_definition != null
+		and _animal_definition.animal_definition_id == animal_definition_id
+	):
+		return true
+	if animal_definition_id.is_empty():
+		return false
+	if _core_animal_catalog == null:
+		_core_animal_catalog = AnimalCatalog.create_core()
+	if _core_animal_catalog == null:
+		return false
+	return apply_animal_definition(_core_animal_catalog.get_definition(animal_definition_id))
 
 
 func get_hunger() -> float:

world/animals/animal_routine_site.gd

@@ -6,7 +6,7 @@ static var _all: Array[AnimalRoutineSite] = []
 
 @export var site_id: StringName
 @export var display_name := "Animal site"
-@export var species_id: StringName = SimulationIds.SPECIES_GOAT
+@export var species_id: StringName
 @export var resident_animal_id: StringName
 @export var debug_label_enabled := false
 

world/animals/goat/cozy_goat.tscn

@@ -1,316 +1,12 @@
-[gd_scene load_steps=24 format=3]
+[gd_scene load_steps=2 format=3]
 
-[ext_resource type="Script" path="res://world/animals/animal_node.gd" id="1_animal"]
-[ext_resource type="Script" path="res://world/animals/goat/cozy_goat_visual.gd" id="2_visual"]
+[ext_resource type="PackedScene" path="res://world/animals/grazer/cozy_grazer.tscn" id="1_grazer"]
 
-[sub_resource type="StandardMaterial3D" id="Material_wool"]
-albedo_color = Color(0.88, 0.82, 0.67, 1)
-roughness = 0.96
-
-[sub_resource type="StandardMaterial3D" id="Material_face"]
-albedo_color = Color(0.58, 0.43, 0.29, 1)
-roughness = 0.92
-
-[sub_resource type="StandardMaterial3D" id="Material_dark"]
-albedo_color = Color(0.13, 0.09, 0.065, 1)
-roughness = 0.9
-
-[sub_resource type="StandardMaterial3D" id="Material_horn"]
-albedo_color = Color(0.78, 0.68, 0.5, 1)
-roughness = 0.86
-
-[sub_resource type="StandardMaterial3D" id="Material_collar"]
-albedo_color = Color(0.12, 0.5, 0.5, 1)
-roughness = 0.72
-
-[sub_resource type="StandardMaterial3D" id="Material_hunger"]
-transparency = 1
-shading_mode = 0
-albedo_color = Color(0.98, 0.62, 0.22, 0.9)
-emission_enabled = true
-emission = Color(0.92, 0.36, 0.08, 1)
-emission_energy_multiplier = 0.32
-
-[sub_resource type="StandardMaterial3D" id="Material_fed"]
-transparency = 1
-shading_mode = 0
-albedo_color = Color(0.72, 0.92, 0.5, 0.92)
-emission_enabled = true
-emission = Color(0.45, 0.78, 0.28, 1)
-emission_energy_multiplier = 0.38
-
-[sub_resource type="CapsuleMesh" id="Mesh_body"]
-material = SubResource("Material_wool")
-radius = 0.48
-height = 1.55
-radial_segments = 12
-rings = 4
-
-[sub_resource type="SphereMesh" id="Mesh_fluff"]
-material = SubResource("Material_wool")
-radius = 0.42
-height = 0.72
-radial_segments = 12
-rings = 6
-
-[sub_resource type="CapsuleMesh" id="Mesh_leg"]
-material = SubResource("Material_face")
-radius = 0.105
-height = 0.62
-radial_segments = 8
-rings = 3
-
-[sub_resource type="BoxMesh" id="Mesh_hoof"]
-material = SubResource("Material_dark")
-size = Vector3(0.2, 0.13, 0.28)
-
-[sub_resource type="SphereMesh" id="Mesh_head"]
-material = SubResource("Material_face")
-radius = 0.34
-height = 0.58
-radial_segments = 12
-rings = 6
-
-[sub_resource type="SphereMesh" id="Mesh_snout"]
-material = SubResource("Material_wool")
-radius = 0.21
-height = 0.32
-radial_segments = 10
-rings = 5
-
-[sub_resource type="SphereMesh" id="Mesh_ear"]
-material = SubResource("Material_face")
-radius = 0.24
-height = 0.42
-radial_segments = 10
-rings = 5
-
-[sub_resource type="SphereMesh" id="Mesh_eye"]
-material = SubResource("Material_dark")
-radius = 0.045
-height = 0.075
-radial_segments = 8
-rings = 4
-
-[sub_resource type="CylinderMesh" id="Mesh_horn"]
-material = SubResource("Material_horn")
-top_radius = 0.035
-bottom_radius = 0.09
-height = 0.42
-radial_segments = 8
-
-[sub_resource type="CylinderMesh" id="Mesh_beard"]
-material = SubResource("Material_wool")
-top_radius = 0.015
-bottom_radius = 0.11
-height = 0.34
-radial_segments = 8
-
-[sub_resource type="CylinderMesh" id="Mesh_tail"]
-material = SubResource("Material_wool")
-top_radius = 0.07
-bottom_radius = 0.12
-height = 0.42
-radial_segments = 8
-
-[sub_resource type="TorusMesh" id="Mesh_collar"]
-material = SubResource("Material_collar")
-inner_radius = 0.27
-outer_radius = 0.32
-rings = 14
-ring_segments = 8
-
-[sub_resource type="TorusMesh" id="Mesh_hunger_bowl"]
-material = SubResource("Material_hunger")
-inner_radius = 0.18
-outer_radius = 0.27
-rings = 14
-ring_segments = 8
-
-[sub_resource type="SphereMesh" id="Mesh_hunger_food"]
-material = SubResource("Material_hunger")
-radius = 0.09
-height = 0.14
-radial_segments = 8
-rings = 4
-
-[sub_resource type="TorusMesh" id="Mesh_fed_ring"]
-material = SubResource("Material_fed")
-inner_radius = 0.32
-outer_radius = 0.42
-rings = 16
-ring_segments = 8
-
-[sub_resource type="SphereMesh" id="Mesh_fed_mote"]
-material = SubResource("Material_fed")
-radius = 0.075
-height = 0.13
-radial_segments = 8
-rings = 4
-
-[node name="CozyGoat" type="Node3D"]
-script = ExtResource("1_animal")
+[node name="CozyGoat" instance=ExtResource("1_grazer")]
+animal_definition_id = &"domestic_goat"
 animal_id = &"goat_dunja"
 display_name = "Dunja"
 species_id = &"goat"
 initial_hunger = 40.0
 initial_routine_site_id = &"dunja_shelter"
 initial_next_routine_tick = 8
-
-[node name="Visual" type="Node3D" parent="."]
-script = ExtResource("2_visual")
-
-[node name="Body" type="MeshInstance3D" parent="Visual"]
-position = Vector3(0, 0.95, 0)
-rotation_degrees = Vector3(90, 0, 0)
-mesh = SubResource("Mesh_body")
-
-[node name="FluffFront" type="MeshInstance3D" parent="Visual"]
-position = Vector3(0, 1.02, 0.42)
-scale = Vector3(1.08, 1.05, 1)
-mesh = SubResource("Mesh_fluff")
-
-[node name="FluffBack" type="MeshInstance3D" parent="Visual"]
-position = Vector3(0, 1.02, -0.42)
-scale = Vector3(1.08, 1.05, 1)
-mesh = SubResource("Mesh_fluff")
-
-[node name="LegFrontLeft" type="MeshInstance3D" parent="Visual"]
-position = Vector3(-0.3, 0.43, 0.48)
-mesh = SubResource("Mesh_leg")
-
-[node name="Hoof" type="MeshInstance3D" parent="Visual/LegFrontLeft"]
-position = Vector3(0, -0.29, 0.035)
-mesh = SubResource("Mesh_hoof")
-
-[node name="LegFrontRight" type="MeshInstance3D" parent="Visual"]
-position = Vector3(0.3, 0.43, 0.48)
-mesh = SubResource("Mesh_leg")
-
-[node name="Hoof" type="MeshInstance3D" parent="Visual/LegFrontRight"]
-position = Vector3(0, -0.29, 0.035)
-mesh = SubResource("Mesh_hoof")
-
-[node name="LegBackLeft" type="MeshInstance3D" parent="Visual"]
-position = Vector3(-0.3, 0.43, -0.48)
-mesh = SubResource("Mesh_leg")
-
-[node name="Hoof" type="MeshInstance3D" parent="Visual/LegBackLeft"]
-position = Vector3(0, -0.29, 0.035)
-mesh = SubResource("Mesh_hoof")
-
-[node name="LegBackRight" type="MeshInstance3D" parent="Visual"]
-position = Vector3(0.3, 0.43, -0.48)
-mesh = SubResource("Mesh_leg")
-
-[node name="Hoof" type="MeshInstance3D" parent="Visual/LegBackRight"]
-position = Vector3(0, -0.29, 0.035)
-mesh = SubResource("Mesh_hoof")
-
-[node name="HeadRoot" type="Node3D" parent="Visual"]
-position = Vector3(0, 1.28, 0.88)
-rotation_degrees = Vector3(-3, 0, 0)
-
-[node name="Head" type="MeshInstance3D" parent="Visual/HeadRoot"]
-mesh = SubResource("Mesh_head")
-
-[node name="Snout" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0, -0.08, 0.31)
-scale = Vector3(1.05, 0.72, 0.9)
-mesh = SubResource("Mesh_snout")
-
-[node name="EyeLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(-0.18, 0.08, 0.285)
-mesh = SubResource("Mesh_eye")
-
-[node name="EyeRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0.18, 0.08, 0.285)
-mesh = SubResource("Mesh_eye")
-
-[node name="EarLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(-0.35, 0.13, 0)
-rotation_degrees = Vector3(8, 0, 67)
-scale = Vector3(0.82, 0.28, 1)
-mesh = SubResource("Mesh_ear")
-
-[node name="EarRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0.35, 0.13, 0)
-rotation_degrees = Vector3(8, 0, -67)
-scale = Vector3(0.82, 0.28, 1)
-mesh = SubResource("Mesh_ear")
-
-[node name="HornLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(-0.17, 0.34, -0.06)
-rotation_degrees = Vector3(-24, 0, -20)
-mesh = SubResource("Mesh_horn")
-
-[node name="HornRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0.17, 0.34, -0.06)
-rotation_degrees = Vector3(-24, 0, 20)
-mesh = SubResource("Mesh_horn")
-
-[node name="Beard" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0, -0.35, 0.08)
-mesh = SubResource("Mesh_beard")
-
-[node name="Collar" type="MeshInstance3D" parent="Visual/HeadRoot"]
-position = Vector3(0, -0.31, -0.16)
-rotation_degrees = Vector3(90, 0, 0)
-scale = Vector3(0.85, 0.85, 0.85)
-mesh = SubResource("Mesh_collar")
-
-[node name="TailRoot" type="Node3D" parent="Visual"]
-position = Vector3(0, 1.16, -0.92)
-rotation_degrees = Vector3(60, 0, 0)
-
-[node name="Tail" type="MeshInstance3D" parent="Visual/TailRoot"]
-position = Vector3(0, 0.18, 0)
-mesh = SubResource("Mesh_tail")
-
-[node name="HungerCueRoot" type="Node3D" parent="Visual"]
-position = Vector3(0, 2.05, 0.18)
-
-[node name="EmptyBowl" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
-rotation_degrees = Vector3(72, 0, 0)
-scale = Vector3(1.1, 0.72, 1.1)
-mesh = SubResource("Mesh_hunger_bowl")
-
-[node name="FoodMoteLeft" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
-position = Vector3(-0.13, 0.22, 0)
-mesh = SubResource("Mesh_hunger_food")
-
-[node name="FoodMoteRight" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
-position = Vector3(0.13, 0.29, 0)
-scale = Vector3(0.82, 0.82, 0.82)
-mesh = SubResource("Mesh_hunger_food")
-
-[node name="FedResponseRoot" type="Node3D" parent="Visual"]
-visible = false
-position = Vector3(0, 1.8, 0.12)
-scale = Vector3(0.2, 0.2, 0.2)
-
-[node name="Halo" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
-rotation_degrees = Vector3(74, 0, 0)
-mesh = SubResource("Mesh_fed_ring")
-
-[node name="MoteLeft" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
-position = Vector3(-0.34, 0.18, 0)
-mesh = SubResource("Mesh_fed_mote")
-
-[node name="MoteRight" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
-position = Vector3(0.34, 0.28, 0)
-scale = Vector3(0.82, 0.82, 0.82)
-mesh = SubResource("Mesh_fed_mote")
-
-[node name="InteractionPoint" type="Marker3D" parent="."]
-position = Vector3(0, 0, 2.05)
-
-[node name="DebugLabel" type="Label3D" parent="."]
-position = Vector3(0, 2.55, 0)
-billboard = 1
-no_depth_test = true
-font_size = 22
-outline_size = 5
-text = "Dunja"
-modulate = Color(1, 0.94, 0.78, 1)
-pixel_size = 0.006

world/animals/goat/cozy_goat_visual.gd

@@ -1,90 +1 @@
-extends Node3D
-
-const HUNGER_CUE_BASE_Y := 2.05
-const FED_RESPONSE_BASE_Y := 1.8
-
-@onready var head_root: Node3D = $HeadRoot
-@onready var tail_root: Node3D = $TailRoot
-@onready var hunger_cue_root: Node3D = $HungerCueRoot
-@onready var fed_response_root: Node3D = $FedResponseRoot
-@onready var leg_front_left: Node3D = $LegFrontLeft
-@onready var leg_front_right: Node3D = $LegFrontRight
-@onready var leg_back_left: Node3D = $LegBackLeft
-@onready var leg_back_right: Node3D = $LegBackRight
-
-var idle_phase := 0.0
-var is_hungry := false
-var is_moving := false
-var fed_tween: Tween
-var head_base_position: Vector3
-var visual_base_position: Vector3
-
-
-func _ready() -> void:
-	head_base_position = head_root.position
-	visual_base_position = position
-	reset_transient_feedback()
-
-
-func _process(delta: float) -> void:
-	idle_phase = fmod(idle_phase + delta, TAU)
-	var breath := sin(idle_phase * 1.7) * 0.025
-	var hungry_drop := -0.12 if is_hungry else 0.0
-	var walking_bob := absf(sin(idle_phase * 5.4)) * 0.045 if is_moving else 0.0
-	position.y = visual_base_position.y + walking_bob
-	head_root.position.y = head_base_position.y + breath + hungry_drop
-	head_root.rotation_degrees.x = (
-		8.0 + sin(idle_phase * 1.2) * 2.0 if is_hungry else -3.0 + sin(idle_phase * 1.4) * 2.5
-	)
-	tail_root.rotation_degrees.z = sin(idle_phase * 3.1) * (4.0 if is_hungry else 13.0)
-	var stride := sin(idle_phase * 5.4) * 14.0 if is_moving else 0.0
-	leg_front_left.rotation_degrees.x = stride
-	leg_back_right.rotation_degrees.x = stride
-	leg_front_right.rotation_degrees.x = -stride
-	leg_back_left.rotation_degrees.x = -stride
-	if hunger_cue_root.visible:
-		hunger_cue_root.position.y = HUNGER_CUE_BASE_Y + sin(idle_phase * 2.2) * 0.07
-
-
-func set_hungry(value: bool) -> void:
-	is_hungry = value
-	hunger_cue_root.visible = value
-
-
-func set_moving(value: bool) -> void:
-	is_moving = value
-	if not value:
-		position = visual_base_position
-		leg_front_left.rotation_degrees.x = 0.0
-		leg_front_right.rotation_degrees.x = 0.0
-		leg_back_left.rotation_degrees.x = 0.0
-		leg_back_right.rotation_degrees.x = 0.0
-
-
-func reset_transient_feedback() -> void:
-	if fed_tween != null:
-		fed_tween.kill()
-	fed_tween = null
-	fed_response_root.visible = false
-	fed_response_root.position.y = FED_RESPONSE_BASE_Y
-	fed_response_root.scale = Vector3(0.2, 0.2, 0.2)
-
-
-func play_fed_response() -> void:
-	reset_transient_feedback()
-	fed_response_root.visible = true
-	fed_tween = create_tween()
-	fed_tween.set_trans(Tween.TRANS_BACK).set_ease(Tween.EASE_OUT)
-	fed_tween.tween_property(fed_response_root, "scale", Vector3.ONE, 0.34)
-	fed_tween.parallel().tween_property(
-		fed_response_root, "position:y", FED_RESPONSE_BASE_Y + 0.22, 0.34
-	)
-	fed_tween.set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_IN)
-	fed_tween.tween_interval(0.7)
-	fed_tween.tween_property(fed_response_root, "scale", Vector3(0.2, 0.2, 0.2), 0.42)
-	fed_tween.finished.connect(_on_fed_response_finished)
-
-
-func _on_fed_response_finished() -> void:
-	fed_response_root.visible = false
-	fed_tween = null
+extends "res://world/animals/grazer/cozy_grazer_visual.gd"

world/animals/grazer/cozy_grazer.tscn

@@ -0,0 +1,311 @@
+[gd_scene load_steps=24 format=3]
+
+[ext_resource type="Script" path="res://world/animals/animal_node.gd" id="1_animal"]
+[ext_resource type="Script" path="res://world/animals/grazer/cozy_grazer_visual.gd" id="2_visual"]
+
+[sub_resource type="StandardMaterial3D" id="Material_wool"]
+albedo_color = Color(0.88, 0.82, 0.67, 1)
+roughness = 0.96
+
+[sub_resource type="StandardMaterial3D" id="Material_face"]
+albedo_color = Color(0.58, 0.43, 0.29, 1)
+roughness = 0.92
+
+[sub_resource type="StandardMaterial3D" id="Material_dark"]
+albedo_color = Color(0.13, 0.09, 0.065, 1)
+roughness = 0.9
+
+[sub_resource type="StandardMaterial3D" id="Material_horn"]
+albedo_color = Color(0.78, 0.68, 0.5, 1)
+roughness = 0.86
+
+[sub_resource type="StandardMaterial3D" id="Material_collar"]
+albedo_color = Color(0.12, 0.5, 0.5, 1)
+roughness = 0.72
+
+[sub_resource type="StandardMaterial3D" id="Material_hunger"]
+transparency = 1
+shading_mode = 0
+albedo_color = Color(0.98, 0.62, 0.22, 0.9)
+emission_enabled = true
+emission = Color(0.92, 0.36, 0.08, 1)
+emission_energy_multiplier = 0.32
+
+[sub_resource type="StandardMaterial3D" id="Material_fed"]
+transparency = 1
+shading_mode = 0
+albedo_color = Color(0.72, 0.92, 0.5, 0.92)
+emission_enabled = true
+emission = Color(0.45, 0.78, 0.28, 1)
+emission_energy_multiplier = 0.38
+
+[sub_resource type="CapsuleMesh" id="Mesh_body"]
+material = SubResource("Material_wool")
+radius = 0.48
+height = 1.55
+radial_segments = 12
+rings = 4
+
+[sub_resource type="SphereMesh" id="Mesh_fluff"]
+material = SubResource("Material_wool")
+radius = 0.42
+height = 0.72
+radial_segments = 12
+rings = 6
+
+[sub_resource type="CapsuleMesh" id="Mesh_leg"]
+material = SubResource("Material_face")
+radius = 0.105
+height = 0.62
+radial_segments = 8
+rings = 3
+
+[sub_resource type="BoxMesh" id="Mesh_hoof"]
+material = SubResource("Material_dark")
+size = Vector3(0.2, 0.13, 0.28)
+
+[sub_resource type="SphereMesh" id="Mesh_head"]
+material = SubResource("Material_face")
+radius = 0.34
+height = 0.58
+radial_segments = 12
+rings = 6
+
+[sub_resource type="SphereMesh" id="Mesh_snout"]
+material = SubResource("Material_wool")
+radius = 0.21
+height = 0.32
+radial_segments = 10
+rings = 5
+
+[sub_resource type="SphereMesh" id="Mesh_ear"]
+material = SubResource("Material_face")
+radius = 0.24
+height = 0.42
+radial_segments = 10
+rings = 5
+
+[sub_resource type="SphereMesh" id="Mesh_eye"]
+material = SubResource("Material_dark")
+radius = 0.045
+height = 0.075
+radial_segments = 8
+rings = 4
+
+[sub_resource type="CylinderMesh" id="Mesh_horn"]
+material = SubResource("Material_horn")
+top_radius = 0.035
+bottom_radius = 0.09
+height = 0.42
+radial_segments = 8
+
+[sub_resource type="CylinderMesh" id="Mesh_beard"]
+material = SubResource("Material_wool")
+top_radius = 0.015
+bottom_radius = 0.11
+height = 0.34
+radial_segments = 8
+
+[sub_resource type="CylinderMesh" id="Mesh_tail"]
+material = SubResource("Material_wool")
+top_radius = 0.07
+bottom_radius = 0.12
+height = 0.42
+radial_segments = 8
+
+[sub_resource type="TorusMesh" id="Mesh_collar"]
+material = SubResource("Material_collar")
+inner_radius = 0.27
+outer_radius = 0.32
+rings = 14
+ring_segments = 8
+
+[sub_resource type="TorusMesh" id="Mesh_hunger_bowl"]
+material = SubResource("Material_hunger")
+inner_radius = 0.18
+outer_radius = 0.27
+rings = 14
+ring_segments = 8
+
+[sub_resource type="SphereMesh" id="Mesh_hunger_food"]
+material = SubResource("Material_hunger")
+radius = 0.09
+height = 0.14
+radial_segments = 8
+rings = 4
+
+[sub_resource type="TorusMesh" id="Mesh_fed_ring"]
+material = SubResource("Material_fed")
+inner_radius = 0.32
+outer_radius = 0.42
+rings = 16
+ring_segments = 8
+
+[sub_resource type="SphereMesh" id="Mesh_fed_mote"]
+material = SubResource("Material_fed")
+radius = 0.075
+height = 0.13
+radial_segments = 8
+rings = 4
+
+[node name="CozyGrazer" type="Node3D"]
+script = ExtResource("1_animal")
+display_name = "Animal"
+
+[node name="Visual" type="Node3D" parent="."]
+script = ExtResource("2_visual")
+
+[node name="Body" type="MeshInstance3D" parent="Visual"]
+position = Vector3(0, 0.95, 0)
+rotation_degrees = Vector3(90, 0, 0)
+mesh = SubResource("Mesh_body")
+
+[node name="FluffFront" type="MeshInstance3D" parent="Visual"]
+position = Vector3(0, 1.02, 0.42)
+scale = Vector3(1.08, 1.05, 1)
+mesh = SubResource("Mesh_fluff")
+
+[node name="FluffBack" type="MeshInstance3D" parent="Visual"]
+position = Vector3(0, 1.02, -0.42)
+scale = Vector3(1.08, 1.05, 1)
+mesh = SubResource("Mesh_fluff")
+
+[node name="LegFrontLeft" type="MeshInstance3D" parent="Visual"]
+position = Vector3(-0.3, 0.43, 0.48)
+mesh = SubResource("Mesh_leg")
+
+[node name="Hoof" type="MeshInstance3D" parent="Visual/LegFrontLeft"]
+position = Vector3(0, -0.29, 0.035)
+mesh = SubResource("Mesh_hoof")
+
+[node name="LegFrontRight" type="MeshInstance3D" parent="Visual"]
+position = Vector3(0.3, 0.43, 0.48)
+mesh = SubResource("Mesh_leg")
+
+[node name="Hoof" type="MeshInstance3D" parent="Visual/LegFrontRight"]
+position = Vector3(0, -0.29, 0.035)
+mesh = SubResource("Mesh_hoof")
+
+[node name="LegBackLeft" type="MeshInstance3D" parent="Visual"]
+position = Vector3(-0.3, 0.43, -0.48)
+mesh = SubResource("Mesh_leg")
+
+[node name="Hoof" type="MeshInstance3D" parent="Visual/LegBackLeft"]
+position = Vector3(0, -0.29, 0.035)
+mesh = SubResource("Mesh_hoof")
+
+[node name="LegBackRight" type="MeshInstance3D" parent="Visual"]
+position = Vector3(0.3, 0.43, -0.48)
+mesh = SubResource("Mesh_leg")
+
+[node name="Hoof" type="MeshInstance3D" parent="Visual/LegBackRight"]
+position = Vector3(0, -0.29, 0.035)
+mesh = SubResource("Mesh_hoof")
+
+[node name="HeadRoot" type="Node3D" parent="Visual"]
+position = Vector3(0, 1.28, 0.88)
+rotation_degrees = Vector3(-3, 0, 0)
+
+[node name="Head" type="MeshInstance3D" parent="Visual/HeadRoot"]
+mesh = SubResource("Mesh_head")
+
+[node name="Snout" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0, -0.08, 0.31)
+scale = Vector3(1.05, 0.72, 0.9)
+mesh = SubResource("Mesh_snout")
+
+[node name="EyeLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(-0.18, 0.08, 0.285)
+mesh = SubResource("Mesh_eye")
+
+[node name="EyeRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0.18, 0.08, 0.285)
+mesh = SubResource("Mesh_eye")
+
+[node name="EarLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(-0.35, 0.13, 0)
+rotation_degrees = Vector3(8, 0, 67)
+scale = Vector3(0.82, 0.28, 1)
+mesh = SubResource("Mesh_ear")
+
+[node name="EarRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0.35, 0.13, 0)
+rotation_degrees = Vector3(8, 0, -67)
+scale = Vector3(0.82, 0.28, 1)
+mesh = SubResource("Mesh_ear")
+
+[node name="HornLeft" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(-0.17, 0.34, -0.06)
+rotation_degrees = Vector3(-24, 0, -20)
+mesh = SubResource("Mesh_horn")
+
+[node name="HornRight" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0.17, 0.34, -0.06)
+rotation_degrees = Vector3(-24, 0, 20)
+mesh = SubResource("Mesh_horn")
+
+[node name="Beard" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0, -0.35, 0.08)
+mesh = SubResource("Mesh_beard")
+
+[node name="Collar" type="MeshInstance3D" parent="Visual/HeadRoot"]
+position = Vector3(0, -0.31, -0.16)
+rotation_degrees = Vector3(90, 0, 0)
+scale = Vector3(0.85, 0.85, 0.85)
+mesh = SubResource("Mesh_collar")
+
+[node name="TailRoot" type="Node3D" parent="Visual"]
+position = Vector3(0, 1.16, -0.92)
+rotation_degrees = Vector3(60, 0, 0)
+
+[node name="Tail" type="MeshInstance3D" parent="Visual/TailRoot"]
+position = Vector3(0, 0.18, 0)
+mesh = SubResource("Mesh_tail")
+
+[node name="HungerCueRoot" type="Node3D" parent="Visual"]
+position = Vector3(0, 2.05, 0.18)
+
+[node name="EmptyBowl" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
+rotation_degrees = Vector3(72, 0, 0)
+scale = Vector3(1.1, 0.72, 1.1)
+mesh = SubResource("Mesh_hunger_bowl")
+
+[node name="FoodMoteLeft" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
+position = Vector3(-0.13, 0.22, 0)
+mesh = SubResource("Mesh_hunger_food")
+
+[node name="FoodMoteRight" type="MeshInstance3D" parent="Visual/HungerCueRoot"]
+position = Vector3(0.13, 0.29, 0)
+scale = Vector3(0.82, 0.82, 0.82)
+mesh = SubResource("Mesh_hunger_food")
+
+[node name="FedResponseRoot" type="Node3D" parent="Visual"]
+visible = false
+position = Vector3(0, 1.8, 0.12)
+scale = Vector3(0.2, 0.2, 0.2)
+
+[node name="Halo" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
+rotation_degrees = Vector3(74, 0, 0)
+mesh = SubResource("Mesh_fed_ring")
+
+[node name="MoteLeft" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
+position = Vector3(-0.34, 0.18, 0)
+mesh = SubResource("Mesh_fed_mote")
+
+[node name="MoteRight" type="MeshInstance3D" parent="Visual/FedResponseRoot"]
+position = Vector3(0.34, 0.28, 0)
+scale = Vector3(0.82, 0.82, 0.82)
+mesh = SubResource("Mesh_fed_mote")
+
+[node name="InteractionPoint" type="Marker3D" parent="."]
+position = Vector3(0, 0, 2.05)
+
+[node name="DebugLabel" type="Label3D" parent="."]
+position = Vector3(0, 2.55, 0)
+billboard = 1
+no_depth_test = true
+font_size = 22
+outline_size = 5
+text = "Animal"
+modulate = Color(1, 0.94, 0.78, 1)
+pixel_size = 0.006

world/animals/grazer/cozy_grazer_visual.gd

@@ -0,0 +1,125 @@
+extends Node3D
+
+const HUNGER_CUE_BASE_Y := 2.05
+const FED_RESPONSE_BASE_Y := 1.8
+
+@onready var head_root: Node3D = $HeadRoot
+@onready var tail_root: Node3D = $TailRoot
+@onready var hunger_cue_root: Node3D = $HungerCueRoot
+@onready var fed_response_root: Node3D = $FedResponseRoot
+@onready var leg_front_left: Node3D = $LegFrontLeft
+@onready var leg_front_right: Node3D = $LegFrontRight
+@onready var leg_back_left: Node3D = $LegBackLeft
+@onready var leg_back_right: Node3D = $LegBackRight
+@onready var body: Node3D = $Body
+@onready var fluff_front: Node3D = $FluffFront
+@onready var fluff_back: Node3D = $FluffBack
+@onready var horn_left: Node3D = $HeadRoot/HornLeft
+@onready var horn_right: Node3D = $HeadRoot/HornRight
+@onready var beard: Node3D = $HeadRoot/Beard
+
+var idle_phase := 0.0
+var is_hungry := false
+var is_moving := false
+var fed_tween: Tween
+var head_base_position: Vector3
+var visual_base_position: Vector3
+var body_base_scale: Vector3
+var fluff_front_base_scale: Vector3
+var fluff_back_base_scale: Vector3
+var _animal_definition: AnimalDefinition
+
+
+func _ready() -> void:
+	head_base_position = head_root.position
+	visual_base_position = position
+	body_base_scale = body.scale
+	fluff_front_base_scale = fluff_front.scale
+	fluff_back_base_scale = fluff_back.scale
+	_apply_definition_presentation()
+	reset_transient_feedback()
+
+
+func apply_animal_definition(definition: AnimalDefinition) -> bool:
+	if definition == null or not definition.validate().is_empty():
+		return false
+	_animal_definition = definition
+	if is_node_ready():
+		_apply_definition_presentation()
+	return true
+
+
+func _apply_definition_presentation() -> void:
+	if _animal_definition == null:
+		return
+	scale = _animal_definition.visual_scale
+	body.scale = body_base_scale * _animal_definition.body_scale
+	fluff_front.scale = fluff_front_base_scale * _animal_definition.fluff_scale
+	fluff_back.scale = fluff_back_base_scale * _animal_definition.fluff_scale
+	horn_left.visible = _animal_definition.show_horns
+	horn_right.visible = _animal_definition.show_horns
+	beard.visible = _animal_definition.show_beard
+
+
+func _process(delta: float) -> void:
+	idle_phase = fmod(idle_phase + delta, TAU)
+	var breath := sin(idle_phase * 1.7) * 0.025
+	var hungry_drop := -0.12 if is_hungry else 0.0
+	var walking_bob := absf(sin(idle_phase * 5.4)) * 0.045 if is_moving else 0.0
+	position.y = visual_base_position.y + walking_bob
+	head_root.position.y = head_base_position.y + breath + hungry_drop
+	head_root.rotation_degrees.x = (
+		8.0 + sin(idle_phase * 1.2) * 2.0 if is_hungry else -3.0 + sin(idle_phase * 1.4) * 2.5
+	)
+	tail_root.rotation_degrees.z = sin(idle_phase * 3.1) * (4.0 if is_hungry else 13.0)
+	var stride := sin(idle_phase * 5.4) * 14.0 if is_moving else 0.0
+	leg_front_left.rotation_degrees.x = stride
+	leg_back_right.rotation_degrees.x = stride
+	leg_front_right.rotation_degrees.x = -stride
+	leg_back_left.rotation_degrees.x = -stride
+	if hunger_cue_root.visible:
+		hunger_cue_root.position.y = HUNGER_CUE_BASE_Y + sin(idle_phase * 2.2) * 0.07
+
+
+func set_hungry(value: bool) -> void:
+	is_hungry = value
+	hunger_cue_root.visible = value
+
+
+func set_moving(value: bool) -> void:
+	is_moving = value
+	if not value:
+		position = visual_base_position
+		leg_front_left.rotation_degrees.x = 0.0
+		leg_front_right.rotation_degrees.x = 0.0
+		leg_back_left.rotation_degrees.x = 0.0
+		leg_back_right.rotation_degrees.x = 0.0
+
+
+func reset_transient_feedback() -> void:
+	if fed_tween != null:
+		fed_tween.kill()
+	fed_tween = null
+	fed_response_root.visible = false
+	fed_response_root.position.y = FED_RESPONSE_BASE_Y
+	fed_response_root.scale = Vector3(0.2, 0.2, 0.2)
+
+
+func play_fed_response() -> void:
+	reset_transient_feedback()
+	fed_response_root.visible = true
+	fed_tween = create_tween()
+	fed_tween.set_trans(Tween.TRANS_BACK).set_ease(Tween.EASE_OUT)
+	fed_tween.tween_property(fed_response_root, "scale", Vector3.ONE, 0.34)
+	fed_tween.parallel().tween_property(
+		fed_response_root, "position:y", FED_RESPONSE_BASE_Y + 0.22, 0.34
+	)
+	fed_tween.set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_IN)
+	fed_tween.tween_interval(0.7)
+	fed_tween.tween_property(fed_response_root, "scale", Vector3(0.2, 0.2, 0.2), 0.42)
+	fed_tween.finished.connect(_on_fed_response_finished)
+
+
+func _on_fed_response_finished() -> void:
+	fed_response_root.visible = false
+	fed_tween = null

world/animals/grazer/cozy_grazer_visual.gd.uid

@@ -0,0 +1 @@
+uid://ckytaadvxm4sh