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src/autoload/data_manager.gd

@@ -8,18 +8,22 @@ var unit_templates: Array[UnitData] = []
 var hero_templates: Array[UnitData] = []
 # 몬스터 리소스 템플릿 목록
 var monster_templates: Array[MonsterData] = []
+# 업그레이드 유닛 리소스 템플릿 목록
+var upgrade_unit_templates: Array[UnitData] = []
 
 func _ready() -> void:
 	_initialize_unit_templates()
+	_initialize_upgrade_unit_templates()
 	_initialize_hero_templates()
 	_initialize_monster_templates()
 	
-## 5종의 유닛 능력치 데이터 초기 셋업
+## 초기 유닛 능력치 데이터 초기 셋업
 func _initialize_unit_templates() -> void:
 	# 1. Archer lv1 (원거리 유닛)
 	var archer_lv_1: UnitData = UnitData.new()
 	archer_lv_1.unit_id = "Unit_Archer_lv1"
 	archer_lv_1.unit_name = "Archer_lv1"
+	archer_lv_1.unit_lv = 1
 	archer_lv_1.damage = 18.0
 	archer_lv_1.cooldown = 0.8
 	archer_lv_1.move_speed = 4.5
@@ -32,6 +36,7 @@ func _initialize_unit_templates() -> void:
 	var mage: UnitData = UnitData.new()
 	mage.unit_id = "Unit_Mage"
 	mage.unit_name = "Mage"
+	mage.unit_lv = 1
 	mage.damage = 35.0
 	mage.cooldown = 1.6
 	mage.move_speed = 3.5
@@ -44,6 +49,7 @@ func _initialize_unit_templates() -> void:
 	var warrior_lv1: UnitData = UnitData.new()
 	warrior_lv1.unit_id = "Unit_Warrior_Lv1"
 	warrior_lv1.unit_name = "Warrior Lv1"
+	warrior_lv1.unit_lv = 1
 	warrior_lv1.damage = 20.0
 	warrior_lv1.cooldown = 1.2
 	warrior_lv1.move_speed = 5.0
@@ -52,6 +58,27 @@ func _initialize_unit_templates() -> void:
 	warrior_lv1.unit_color = Color(0.55, 0.62, 0.7, 1.0)
 	unit_templates.append(warrior_lv1)
 	
+## 초기 유닛 능력치 데이터 초기 셋업
+func _initialize_upgrade_unit_templates() -> void:
+	var warrior_lv2: UnitData = UnitData.new()
+	warrior_lv2.unit_id = "Unit_Warrior_Lv2"
+	warrior_lv2.unit_name = "Warrior Lv2"
+	warrior_lv2.unit_lv = 2
+	warrior_lv2.damage = 36.0
+	warrior_lv2.cooldown = 1.0
+	warrior_lv2.move_speed = 5.0
+	warrior_lv2.attack_range = 2.0
+	warrior_lv2.is_ranged = false
+	warrior_lv2.unit_color = Color(0.55, 0.62, 0.7, 1.0)
+	upgrade_unit_templates.append(warrior_lv2)
+
+## ID에 해당하는 업그레이드 유닛 템플릿을 반환합니다.
+## 템플릿은 읽기 전용으로 사용하며, 개별 유닛의 임시 변경이 필요할 때만 호출 측에서 복제합니다.
+func get_upgrade_unit_template(unit_id: String) -> UnitData:
+	for template: UnitData in upgrade_unit_templates:
+		if template.unit_id == unit_id:
+			return template
+	return null
 
 ## 영웅 능력치 데이터 초기 셋업
 func _initialize_hero_templates() -> void:

src/core/unit_controller.gd

@@ -421,22 +421,18 @@ func _try_move_selected_unit_to_tile(screen_pos: Vector2) -> void:
 	_show_unit_action_buttons()
 
 ## 업그레이드 버튼 처리입니다.
-## UnitData가 템플릿 Resource로 공유될 수 있으므로 선택 유닛에만 복제본을 할당한 뒤 능력치를 올립니다.
+## 합성 규칙과 Lv2 생성은 각 유닛 스크립트에 위임하고, 컨트롤러는 UI 선택과 비용만 처리합니다.
 func _on_upgrade_selected_unit_pressed() -> void:
 	if not _selected_unit or not is_instance_valid(_selected_unit):
 		_clear_selected_unit()
 		return
-	if not _selected_unit is BaseUnit:
+	if not _selected_unit.has_method("can_merge_to_lv2") or not _selected_unit.has_method("merge_to_lv2"):
 		return
-
-	var selected_base_unit: BaseUnit = _selected_unit as BaseUnit
-	if not selected_base_unit.unit_data:
+	if not _selected_unit.call("can_merge_to_lv2"):
 		return
 	if not GameManager.spend_gold(UNIT_UPGRADE_COST):
 		return
-
-	selected_base_unit.unit_data = selected_base_unit.unit_data.duplicate(true) as UnitData
-	selected_base_unit.unit_data.damage *= 1.18
-	selected_base_unit.unit_data.attack_range *= 1.04
-	selected_base_unit.unit_data.cooldown = maxf(0.15, selected_base_unit.unit_data.cooldown * 0.94)
-	selected_base_unit.unit_data.move_speed *= 1.04
+	if not _selected_unit.call("merge_to_lv2"):
+		GameManager.add_gold(UNIT_UPGRADE_COST)
+		return
+	_clear_selected_unit()

src/entities/units/base/unit_data.gd

@@ -5,6 +5,8 @@ extends Resource
 ## - Godot의 Resource 클래스를 상속받아 유닛 데이터 템플릿을 생성 및 직렬화하기에 용이합니다.
 ## - DataManager에서 각 유닛의 기본 능력치를 정의하고 생성할 때 템플릿 데이터로 활용됩니다.
 
+@export var unit_lv: int = 1
+
 ## 유닛 고유 식별자 ID (예: "Unit_Warrior_Lv1", "Unit_Mage")
 @export var unit_id: String = ""
 

src/entities/units/unit/warrior/lv1/warrior_lv1_unit.gd

@@ -6,6 +6,9 @@ const MODEL_NAME: String = "warrior_lv1"
 const WARRIOR_ATTACK_ANIM: String = "Attack"
 const WARRIOR_RUN_ANIM: String = "Run"
 const WARRIOR_IDLE_ANIM: String = "Idle"
+const WARRIOR_LV1_ID: String = "Unit_Warrior_Lv1"
+const WARRIOR_LV2_ID: String = "Unit_Warrior_Lv2"
+const WARRIOR_LV2_SCENE: PackedScene = preload("res://src/entities/units/unit/warrior/lv2/warrior_lv2_unit.tscn")
 
 # 드워프 영웅의 전방 부채꼴 공격 방식을 워리어의 자동 공격에 맞게 사용합니다.
 # 워리어가 자동으로 선택한 주 대상을 바라본 뒤 공격하므로, 해당 방향을 중심으로
@@ -97,11 +100,11 @@ func _get_weapon_config() -> Dictionary:
 	return {
 		"bone_name": "RightHand",
 		"attachment_name": "RightHandAttachment",
-		"weapon_scene_path": "res://assets/models/items/weapons/old_sword/old_sword.tscn",
-		"texture_path": "res://assets/models/items/weapons/old_sword/old_sword_0.png",
-		"weapon_position": Vector3(0, 0.085, -0.035),
-		"weapon_rotation": Vector3(-20, 110, -90),
-		"weapon_scale": Vector3(0.75, 0.75, 0.75),
+		"weapon_scene_path": "res://assets/models/items/weapons/rusty_sword/rusty_sword.tscn",
+		"texture_path": "res://assets/models/items/weapons/rusty_sword/rusty_sword_0.png",
+		"weapon_position": Vector3(-0.1, 0.55, -0.1),
+		"weapon_rotation": Vector3(6, 150, -20),
+		"weapon_scale": Vector3(0.65, 0.65, 0.65),
 	}
 
 func _update_animations() -> void:
@@ -153,3 +156,87 @@ func _update_animations() -> void:
 
 		if target_anim != "" and _model_anim_player.current_animation != target_anim:
 			_model_anim_player.play(target_anim, blend_time, play_speed)
+
+## 이 유닛을 포함해 필드의 Warrior Lv1 세 기가 있을 때만 합성할 수 있습니다.
+func can_merge_to_lv2() -> bool:
+	return _get_merge_materials().size() == 3
+
+## Warrior Lv1 세 기를 Warrior Lv2 한 기로 교체합니다.
+## 합성 결과는 클릭된 이 유닛의 위치, 회전, 타일 점유 상태를 이어받고,
+## 능력치는 DataManager에 등록된 Lv2 템플릿을 그대로 사용합니다.
+func merge_to_lv2() -> bool:
+	var merge_materials: Array[WarriorLv1Unit] = _get_merge_materials()
+	if merge_materials.size() != 3:
+		return false
+
+	var warrior_lv2_data: UnitData = DataManager.get_upgrade_unit_template(WARRIOR_LV2_ID)
+	if not warrior_lv2_data:
+		push_error("WarriorLv1Unit: Warrior Lv2 unit data is not registered in DataManager.")
+		return false
+
+	var spawn_parent: Node = get_parent()
+	if not spawn_parent:
+		push_error("WarriorLv1Unit: Cannot merge without a parent node.")
+		return false
+
+	var warrior_lv2: BaseUnit = WARRIOR_LV2_SCENE.instantiate() as BaseUnit
+	if not warrior_lv2:
+		push_error("WarriorLv1Unit: Failed to instantiate Warrior Lv2 scene.")
+		return false
+
+	var spawn_position: Vector3 = global_position
+	var spawn_rotation: Vector3 = global_rotation
+	var was_tile_bound: bool = is_tile_bound
+	var tile_cell: Vector3i = occupied_tile_cell
+	if was_tile_bound:
+		# 물리 이동 중 생길 수 있는 현재 좌표의 미세한 오차 대신, GridMap 셀의 실제 중심을 사용합니다.
+		spawn_position = _get_tile_center(tile_cell, spawn_position)
+
+	for material: WarriorLv1Unit in merge_materials:
+		material.queue_free()
+
+	warrior_lv2.unit_data = warrior_lv2_data
+	spawn_parent.add_child(warrior_lv2)
+	warrior_lv2.global_rotation = spawn_rotation
+	if was_tile_bound:
+		warrior_lv2.place_on_tile(spawn_position, tile_cell)
+	else:
+		warrior_lv2.global_position = spawn_position
+	return true
+
+## 타일 셀의 월드 중심을 반환합니다. 배치 HUD와 같은 GridMap 변환식을 사용합니다.
+func _get_tile_center(tile_cell: Vector3i, fallback_position: Vector3) -> Vector3:
+	var current_scene: Node = get_tree().current_scene
+	var grid_map: GridMap = _find_grid_map(current_scene)
+	if not grid_map:
+		push_warning("WarriorLv1Unit: GridMap not found; using the current unit position for merge.")
+		return fallback_position
+	return grid_map.to_global(grid_map.map_to_local(tile_cell))
+
+func _find_grid_map(node: Node) -> GridMap:
+	if not node:
+		return null
+	if node is GridMap:
+		return node as GridMap
+	for child: Node in node.get_children():
+		var grid_map: GridMap = _find_grid_map(child)
+		if grid_map:
+			return grid_map
+	return null
+
+## 클릭한 Lv1을 첫 재료로 고정하고, 나머지 재료는 필드의 다른 Lv1에서 찾습니다.
+func _get_merge_materials() -> Array[WarriorLv1Unit]:
+	if not unit_data or unit_data.unit_id != WARRIOR_LV1_ID:
+		return []
+
+	var merge_materials: Array[WarriorLv1Unit] = [self]
+	for unit: Node in get_tree().get_nodes_in_group("units"):
+		if merge_materials.size() >= 3:
+			break
+		if unit == self or not is_instance_valid(unit) or not unit is WarriorLv1Unit:
+			continue
+
+		var warrior_lv1: WarriorLv1Unit = unit as WarriorLv1Unit
+		if warrior_lv1.unit_data and warrior_lv1.unit_data.unit_id == WARRIOR_LV1_ID:
+			merge_materials.append(warrior_lv1)
+	return merge_materials

src/entities/units/unit/warrior/lv1/warrior_lv1_unit.tscn

@@ -42,4 +42,22 @@ mesh = SubResource("TorusMesh_selection")
 
 [node name="warrior_lv1" parent="." unique_id=1752898427 instance=ExtResource("2_0bbpa")]
 
+[node name="Skeleton3D" parent="warrior_lv1/Armature" parent_id_path=PackedInt32Array(1752898427, 99922453) index="0" unique_id=1902318440]
+bones/0/position = Vector3(0.008906815, -0.016679693, 0.43917271)
+bones/0/rotation = Quaternion(0.5769956, -0.6211797, -0.5235334, 0.084407754)
+bones/1/rotation = Quaternion(0.34053355, 0.507711, -0.6953065, 0.3779094)
+bones/2/rotation = Quaternion(0.60372627, 0.28453326, 0.26035574, 0.6976893)
+bones/3/rotation = Quaternion(-0.5800057, -0.13442016, 0.031176323, 0.80284035)
+bones/5/rotation = Quaternion(0.6090532, 0.28895468, 0.4301953, 0.6004094)
+bones/6/rotation = Quaternion(0.37091696, -0.0070307143, 0.33286086, 0.8669342)
+bones/7/rotation = Quaternion(-0.22090644, 0.06417959, -0.04645068, 0.9720718)
+bones/11/rotation = Quaternion(-0.043871194, 0.042346865, -0.037475355, 0.9974356)
+bones/12/rotation = Quaternion(0.47878474, 0.6548963, -0.26809373, 0.519617)
+bones/13/rotation = Quaternion(0.45065325, 0.38060626, 0.33229533, 0.7359555)
+bones/14/rotation = Quaternion(-0.64165676, -0.21268457, 0.3319805, 0.65789884)
+bones/16/rotation = Quaternion(-0.51728547, 0.55821884, -0.39225844, -0.5166632)
+bones/17/rotation = Quaternion(0.5371661, -0.2091015, -0.24741793, 0.77878976)
+bones/18/rotation = Quaternion(-0.27791977, 0.023365228, -0.53834283, 0.79523695)
+bones/21/rotation = Quaternion(0.17100015, 0.23039033, -0.18824059, 0.93927884)
+
 [editable path="warrior_lv1"]

src/entities/units/unit/warrior/lv2/warrior_lv2_unit.gd

+class_name WarriorLv2Unit
+extends BaseUnit
+
+## Warrior Lv2 유닛 고유 동작 및 비주얼 제어 클래스
+const MODEL_NAME: String = "warrior_lv2"
+const WARRIOR_ATTACK_ANIM: String = "Attack"
+const WARRIOR_RUN_ANIM: String = "Run"
+const WARRIOR_IDLE_ANIM: String = "Idle"
+
+@export var area_attack_distance: float = 2.5
+@export_range(1.0, 360.0, 1.0) var area_attack_angle_degrees: float = 115.0
+
+func _setup_unit_visuals() -> void:
+	var node: Node3D = get_node_or_null(MODEL_NAME) as Node3D
+	if not node:
+		push_error("WarriorLv2Unit: Model node '" + MODEL_NAME + "' not found under children.")
+		return
+	_model_instance = node
+
+	UnitHelper.apply_skin(_model_instance, "res://assets/models/units/warrior/lv2/warrior_lv2_0.png")
+	attach_weapon(_model_instance)
+
+	_model_anim_player = UnitHelper.find_animation_player(_model_instance)
+	if _model_anim_player:
+		var anim_lib_path: String = "res://assets/models/units/warrior/lv2/warrior_lv2_anim.tres"
+		if ResourceLoader.exists(anim_lib_path):
+			var lib: AnimationLibrary = load(anim_lib_path) as AnimationLibrary
+			if lib:
+				if _model_anim_player.has_animation_library(""):
+					_model_anim_player.remove_animation_library("")
+				if not _model_anim_player.has_animation_library(MODEL_NAME):
+					_model_anim_player.add_animation_library(MODEL_NAME, lib)
+					UnitHelper.clean_root_animation_tracks(_model_anim_player)
+
+func _get_attack_animation_name(_model_name: String) -> String:
+	return MODEL_NAME + "/" + WARRIOR_ATTACK_ANIM
+
+## 공격 시작 순간 정면 부채꼴 안의 몬스터를 모두 타격 대상으로 확정합니다.
+func _get_melee_attack_targets(primary_target: Node3D) -> Array[Node3D]:
+	var attack_origin: Vector3 = global_position
+	var attack_forward: Vector3 = -global_transform.basis.z
+	attack_forward.y = 0.0
+	if attack_forward.length_squared() <= 0.0001:
+		attack_forward = Vector3.FORWARD
+	else:
+		attack_forward = attack_forward.normalized()
+
+	var hit_monsters: Array[Node3D] = []
+	var half_angle_radians: float = deg_to_rad(area_attack_angle_degrees * 0.5)
+	var minimum_forward_dot: float = cos(half_angle_radians)
+
+	for monster: Node in get_tree().get_nodes_in_group("monsters"):
+		if not is_instance_valid(monster) or not monster is Node3D:
+			continue
+		if monster.get("is_dead") == true:
+			continue
+
+		var monster_3d: Node3D = monster as Node3D
+		var direction_from_warrior: Vector3 = monster_3d.global_position - attack_origin
+		direction_from_warrior.y = 0.0
+		var horizontal_distance: float = direction_from_warrior.length()
+		if horizontal_distance > area_attack_distance:
+			continue
+		if horizontal_distance <= 0.01:
+			hit_monsters.append(monster_3d)
+			continue
+
+		var direction_to_monster: Vector3 = direction_from_warrior / horizontal_distance
+		if attack_forward.dot(direction_to_monster) >= minimum_forward_dot:
+			hit_monsters.append(monster_3d)
+
+	if is_instance_valid(primary_target) and not hit_monsters.has(primary_target):
+		var primary_offset: Vector3 = primary_target.global_position - attack_origin
+		primary_offset.y = 0.0
+		if primary_offset.length() <= area_attack_distance:
+			hit_monsters.append(primary_target)
+
+	hit_monsters.sort_custom(func(a: Node3D, b: Node3D) -> bool:
+		return attack_origin.distance_squared_to(a.global_position) < attack_origin.distance_squared_to(b.global_position)
+	)
+	return hit_monsters
+
+func _get_weapon_config() -> Dictionary:
+	return {
+		"bone_name": "RightHand",
+		"attachment_name": "RightHandAttachment",
+		"weapon_scene_path": "res://assets/models/items/weapons/old_sword/old_sword.tscn",
+		"texture_path": "res://assets/models/items/weapons/old_sword/old_sword_0.png",
+		"weapon_position": Vector3(0, 0.085, -0.035),
+		"weapon_rotation": Vector3(-20, 110, -90),
+		"weapon_scale": Vector3(0.75, 0.75, 0.75),
+	}
+
+func _update_animations() -> void:
+	if not _model_anim_player:
+		return
+
+	var library_prefix: String = MODEL_NAME + "/"
+	var has_custom_anims: bool = _model_anim_player.has_animation(library_prefix + WARRIOR_IDLE_ANIM)
+	var target_anim: String = ""
+	var play_speed: float = 1.0
+	var blend_time: float = 0.2
+
+	if has_custom_anims:
+		var attack_anim: String = library_prefix + WARRIOR_ATTACK_ANIM
+		var run_anim: String = library_prefix + WARRIOR_RUN_ANIM
+		var idle_anim: String = library_prefix + WARRIOR_IDLE_ANIM
+		if _attack_lock_timer > 0.0:
+			var base_speed: float = 1.5
+			if unit_data.cooldown < 0.6:
+				base_speed = 0.6 / unit_data.cooldown
+			play_speed = clampf(base_speed, 1.0, 3.0)
+			target_anim = attack_anim
+		elif velocity.length() > 0.1:
+			target_anim = run_anim
+			play_speed = 1.2
+		else:
+			target_anim = idle_anim
+
+		if _model_anim_player.current_animation != target_anim:
+			_last_anim_state = target_anim.replace(library_prefix, "")
+			_model_anim_player.play(target_anim, blend_time, play_speed)

src/entities/units/unit/warrior/lv2/warrior_lv2_unit.gd.uid

+uid://bsrwvw8lvd10l

src/entities/units/unit/warrior/lv2/warrior_lv2_unit.tscn

+[gd_scene format=3 uid="uid://c8ylhv7latu3f"]
+
+[ext_resource type="Script" uid="uid://bsrwvw8lvd10l" path="res://src/entities/units/unit/warrior/lv2/warrior_lv2_unit.gd" id="1_script"]
+[ext_resource type="PackedScene" uid="uid://c1s1bkt10v0rm" path="res://assets/models/units/warrior/lv2/warrior_lv_2.tscn" id="2_model"]
+
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_body"]
+radius = 0.4
+height = 1.2
+
+[sub_resource type="CapsuleMesh" id="CapsuleMesh_unit"]
+radius = 0.4
+height = 1.2
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ring"]
+albedo_color = Color(0.098039, 0.901961, 0.098039, 1)
+emission_enabled = true
+emission = Color(0.098039, 0.901961, 0.098039, 1)
+emission_energy_multiplier = 2.0
+
+[sub_resource type="TorusMesh" id="TorusMesh_selection"]
+material = SubResource("StandardMaterial3D_ring")
+inner_radius = 0.65
+outer_radius = 0.7
+
+[node name="WarriorLv2Unit" type="CharacterBody3D" unique_id=319330680]
+script = ExtResource("1_script")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="." unique_id=88758424]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.6, 0)
+shape = SubResource("CapsuleShape3D_body")
+
+[node name="VisualMesh" type="MeshInstance3D" parent="." unique_id=1091972406]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.6, 0)
+visible = false
+mesh = SubResource("CapsuleMesh_unit")
+
+[node name="SelectionRing" type="MeshInstance3D" parent="." unique_id=888351282]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.02, 0)
+mesh = SubResource("TorusMesh_selection")
+
+[node name="NavigationAgent3D" type="NavigationAgent3D" parent="." unique_id=1139008088]
+
+[node name="warrior_lv2" parent="." unique_id=1273649626 instance=ExtResource("2_model")]
+
+[editable path="warrior_lv2"]

src/ui/unit_placement/hud_unit_placement.gd

@@ -154,12 +154,12 @@ func begin_random_unit_placement() -> void:
 ## 새 유닛 타입이 추가되면 이 match에만 씬 매핑을 늘리면 배치 흐름은 그대로 재사용됩니다.
 func _get_scene_for_unit(unit_data: UnitData) -> PackedScene:
 	match unit_data.unit_id:
-		"Unit_Archer_lv1", "Unit_Ranger":
+		"Unit_Archer_lv1":
 			return ARCHER_LV1_SCENE
-		"Unit_Mage":
-			return MAGE_SCENE
 		"Unit_Warrior_Lv1":
 			return WARRIOR_LV1_SCENE
+		"Unit_Mage":
+			return MAGE_SCENE
 		_:
 			return _base_unit_scene
 

tmp_verify_lv2_texture.gd.uid

+uid://ch7epxl0ehhai