asset-generator

name	asset-generator
description	游戏资产生成技能。调用外部 AI 服务生成 3D 模型、贴图、音效等资产， 并自动导入到 Godot 项目中。
version	1.0.0
dependencies	["godot-core","file-manager","external-api"]
triggers	[{"pattern":"生成模型|生成贴图|生成材质|生成音乐|生成音效|生成角色|创建资产"}]
inputs	[{"name":"asset_type","type":"string","enum":["model_3d","texture","sprite","music","sfx","voice"],"required":true},{"name":"prompt","type":"string","required":true},{"name":"style","type":"string","required":false}]
outputs	[{"name":"asset_path","type":"string","description":"生成的资产在项目中的路径"},{"name":"manifest_entry","type":"object","description":"添加到 manifest.json 的条目"}]

游戏资产生成技能

通过 AI 服务生成游戏资产，并自动导入 Godot 项目。

前置条件

1. 确保已配置相应服务的 API Key（见 external-api skill）
2. 确保项目目录结构已初始化

---

资产类型与服务映射

资产类型	首选服务	备选服务	输出格式
3D 模型	Meshy.ai	Tripo3D	.glb
贴图	Stable Diffusion	Leonardo.ai	.png
精灵图	Stable Diffusion	-	.png
背景音乐	Suno	-	.ogg
音效	-	-	.wav
语音	ElevenLabs	-	.ogg

---

3D 模型生成

生成流程

用户提示 → AI 生成 → 下载 GLB → 导入 Godot → 更新清单

提示词模板

角色模型

{style} {character_type} character, game-ready model, T-pose, 
low-poly ({poly_count} triangles), clean topology, 
{texture_style} texture, full body

示例：

cartoon fantasy knight character, game-ready model, T-pose,
low-poly (5000 triangles), clean topology, 
hand-painted texture, full body

道具模型

{item_name}, game prop, {style} style, 
{poly_count} polygons, centered, {material_description}

示例：

medieval sword, game prop, stylized fantasy style,
2000 polygons, centered, metallic blade with leather-wrapped handle

环境模型

{environment_object}, game asset, modular, 
{style} style, optimized for games, {additional_details}

导入配置

{
  "import_options": {
    "generate_collisions": false,
    "generate_lightmap_uv": false,
    "create_shadow_mesh": true,
    "scale": 1.0,
    "offset": [0, 0, 0],
    "import_animations": true
  }
}

生成后处理

1. 碰撞体生成：复杂模型需手动或使用简化网格
2. 材质调整：检查材质是否正确导入
3. LOD 设置：为大型模型设置细节层次

---

贴图生成

贴图类型

无缝贴图（Tileable）

seamless tileable {material} texture, top-down view, 
high detail, 4k resolution, pbr ready, {additional_details}

示例：

seamless tileable stone floor texture, top-down view,
high detail, 4k resolution, pbr ready, medieval dungeon style

精灵/角色

{character} sprite, {view} view, {style} style, 
transparent background, game asset, {size} pixels

示例：

pixel art knight sprite, side view, 16-bit style,
transparent background, game asset, 64x64 pixels

UI 图标

game UI icon, {item_name}, flat design style, 
{color_scheme} colors, transparent background, {size}x{size}

Tileset

2D game tileset, {theme} theme, {tile_size}x{tile_size} tiles,
{count} variations, top-down view, seamless edges

尺寸规范

用途	推荐尺寸	说明
角色精灵	64x64, 128x128	2D 游戏角色
UI 图标	32x32, 64x64	物品、技能图标
贴图	512x512, 1024x1024	3D 模型贴图
背景	1920x1080	UI 背景
Tileset	16x16, 32x32 per tile	地图瓦片

导入配置

{
  "import_options": {
    "compress_mode": "lossless",
    "mipmaps": true,
    "filter": true,
    "repeat": "enabled",
    "size_limit": 0
  }
}

---

音频生成

背景音乐

提示词模板

{genre} {mood} music, {tempo} bpm, {instruments},
game soundtrack, {duration} seconds, loop-ready

场景音乐示例：

场景	提示词
主菜单	orchestral epic theme, moderate tempo, strings and brass, game soundtrack, 90 seconds, loop-ready
探索	ambient atmospheric music, slow, piano and synth pads, mysterious mood, 120 seconds, seamless loop
战斗	intense action music, fast 140bpm, drums and orchestra, battle theme, 60 seconds, loopable
Boss 战	epic boss battle music, dramatic, choir and orchestra, intense and climactic, 90 seconds
胜利	triumphant victory fanfare, uplifting, brass and strings, short 15 seconds

音效

音效通常需要组合或后处理，建议：

1. 使用音效库（Freesound、Sonniss 等）
2. AI 生成基础音效后在 Audacity 中调整

常用音效类型：

• 脚步声（草地、石头、木板）
• 攻击/打击声
• 拾取物品
• UI 点击/悬停
• 环境音效（风、水、火）

语音生成

interface VoiceConfig {
  character_name: string;
  voice_id: string;        // ElevenLabs voice ID
  personality: string;     // "wise old man" | "young hero" | "villain"
  emotion: string;         // "neutral" | "angry" | "sad" | "happy"
}

// 批量生成对话
interface DialogueLine {
  id: string;
  text: string;
  emotion?: string;
}

音频导入配置

{
  "music_import": {
    "loop": true,
    "bpm": 120,
    "beat_count": 0
  },
  "sfx_import": {
    "loop": false
  }
}

---

资产清单管理

manifest.json 结构

{
  "version": "1.0.0",
  "last_updated": "2026-04-16T10:30:00Z",
  "assets": {
    "models": [],
    "textures": [],
    "audio": {
      "music": [],
      "sfx": [],
      "voice": []
    }
  }
}

资产条目格式

{
  "id": "model_player_knight",
  "name": "Player Knight",
  "type": "model_3d",
  "path": "res://assets/models/characters/player_knight.glb",
  "source": {
    "service": "meshy.ai",
    "prompt": "cartoon fantasy knight character...",
    "generation_date": "2026-04-16T10:30:00Z",
    "task_id": "task_abc123"
  },
  "metadata": {
    "poly_count": 5000,
    "has_animations": true,
    "animations": ["idle", "walk", "run", "attack"],
    "materials": ["body", "armor", "weapon"]
  },
  "tags": ["player", "character", "knight", "humanoid"]
}

更新清单

func add_asset_to_manifest(asset_info: Dictionary) -> bool:
    var manifest_path = "res://assets/manifest.json"
    var manifest = load_json(manifest_path)
    
    if manifest == null:
        manifest = {
            "version": "1.0.0",
            "last_updated": "",
            "assets": {
                "models": [],
                "textures": [],
                "audio": {"music": [], "sfx": [], "voice": []}
            }
        }
    
    # 根据类型添加到对应数组
    var asset_type = asset_info.get("type", "")
    match asset_type:
        "model_3d":
            manifest.assets.models.append(asset_info)
        "texture", "sprite":
            manifest.assets.textures.append(asset_info)
        "music":
            manifest.assets.audio.music.append(asset_info)
        "sfx":
            manifest.assets.audio.sfx.append(asset_info)
        "voice":
            manifest.assets.audio.voice.append(asset_info)
    
    manifest.last_updated = Time.get_datetime_string_from_system()
    
    return save_json(manifest_path, manifest)

---

批量生成

从配置批量生成

{
  "batch_generate": {
    "characters": [
      {
        "id": "player",
        "prompt_template": "cartoon {class} character",
        "variants": ["knight", "mage", "archer"]
      }
    ],
    "items": [
      {
        "category": "weapons",
        "items": ["sword", "staff", "bow"],
        "style": "fantasy medieval"
      }
    ]
  }
}

批量处理流程

async function batchGenerate(config: BatchConfig): Promise<BatchResult[]> {
  const results: BatchResult[] = [];
  
  for (const item of config.items) {
    // 控制并发，避免 API 限制
    await delay(1000);
    
    const result = await generateAsset(item);
    results.push(result);
    
    // 更新进度
    console.log(`Generated ${results.length}/${config.items.length}`);
  }
  
  return results;
}

---

最佳实践

1. 提示词迭代：先用低质量快速测试，确认效果后再生成高质量版本
2. 版本管理：在清单中记录生成参数，方便重新生成
3. 统一风格：在提示词中保持一致的风格描述词
4. 资源复用：相似资产使用变体而非重新生成
5. 本地缓存：避免重复生成相同资产