title, type, tags, sources, last_updated
| title |
type |
tags |
sources |
last_updated |
| WorldPartition |
concept |
| unreal-engine |
| open-world |
| streaming |
| level-design |
|
|
2026-04-30 |
Aliases
- UE5 World Partition
- WP
- World Partition System
- 开放世界分区
Definition
World Partition 是 Unreal Engine 5 引入的开放世界分区管理框架,将整个世界划分为网格状单元格(Cells),按需流式加载和卸载,支持多人协作编辑(通过 One File Per Actor 模式)。
Grid Cell Size Strategy
| 区域类型 |
单元格尺寸 |
说明 |
| 密集城区 |
64m |
高密度流式内容 |
| 空旷地形 |
128m |
平衡精度与开销 |
| 沙漠/海洋 |
256m+ |
稀疏区域 |
Data Layers Configuration
| Layer Name |
Type |
Contents |
| AlwaysLoaded |
Always Loaded |
Sky, audio manager, game systems |
| HighDetail |
Runtime |
Loaded when quality = High |
| PlayerCampData |
Runtime |
Quest-specific environment changes |
Critical Rules
- 格子大小由流式预算决定:小格子 = 更精细的流式但更多开销
- 关键游戏内容禁止放在格子边界:边界穿越时流式可能导致实体短暂消失
- Always Loaded 层存放:Sky、Audio Manager、GameMode 等常驻内容
- Runtime Hash Grid 单元格大小必须在填充世界前确定:后期重配置需要完整重新保存关卡
Streaming Sources
- Player Pawn:主要流式来源,512m 激活范围
- Cinematic Camera:次要来源,用于过场区域预加载
Role in Open-World Pipeline
World Partition 是 UnrealWorldBuilder 开放世界工作流的核心框架,承接 Landscape、PCG、HLOD 等系统的空间管理。
Connections
Sources