Name: Unreal Engine
Author: Iván

據 AlphaMoat 統計,截至 2026-09,Unreal Engine 累計下載 2,516 次、獲 5 個星標,在全部 5,078 個 AI 技能中排名第 4,089 位,在「開發程式設計」分類(577 個)中排名第 506 位。

累計安裝

169

累計下載

2516

星標

全站排名

#4,089

全站前 81% · 「開發程式設計」前 88%

平台	累計安裝	累計下載	星標	評論
ClawHub ↗	66	2401	4	-
SkillHub ↗	169	2516	5	—

各平台的計數口徑不同,統計時間不一致。

這個技能是做什麼的

涵蓋 UObject 垃圾回收、UPROPERTY/UFUNCTION 宏、Actor 生命週期、Tick 效能、網路複製、資源引用和指標所有權等注意事項。該內容是通用參考，可能與具體引擎版本、專案架構或網路模型不符；應用前應對照專案文件和程式碼規範核驗。發布前由 Unreal Engine 開發者審閱改動，並核驗編輯器與封裝版本中的行為。

資料釋出於 2026-10-27

可以用來做什麼

排查 UObject 生命週期與引用問題
核對 Blueprint 可存取性或複製邏輯
檢查 Actor 生命週期、Tick 和資源引用

什麼時候用

需要 Unreal Engine 程式設計問題的簡明參考時
將建議應用到具體專案之前，先核實引擎版本、網路模型和本機編碼規範

示例提示詞

以下是根據技能文件生成的示例,不代表實際執行結果。

檢查這段 Unreal Engine 程式碼的物件生命週期和複製邏輯，並把通用建議與需要按專案驗證的部分分開。

月度資料趨勢

累計下載2516

星標5

2026-09 起統計方法調整:同名技能按作者分別統計,並覆蓋全部技能。圖中虛線為調整前的月份,與之後的資料不直接比較,也不計算跨越調整的增長。

月份	累計下載	環比	星標
2026-09	2516	—	5
2026-08	2239	+10.3%	5
2026-07	2029	+21.2%	5
2026-06	1674	+11.0%	5
2026-05	1508	—	4
2026-03	1096	—	4

SKILL.md 原文

以下是作者釋出的原始檔案,按純文字顯示,本站未做修改或稽核;其中的連結不可點選,命令請核實後再執行。抓取於 2026-10-23。

3.0 KB · ClawHub v1.0.0

---
name: Unreal Engine
description: Avoid common Unreal mistakes — garbage collection, UPROPERTY macros, replication authority, and asset reference pitfalls.
metadata: {"clawdbot":{"emoji":"🎯","os":["linux","darwin","win32"]}}
---

## Garbage Collection
- Raw pointers to UObjects get garbage collected — use `UPROPERTY()` to prevent
- `UPROPERTY()` marks for GC tracking — without it, pointer becomes dangling
- `TWeakObjectPtr` for optional references — doesn't prevent collection, check `IsValid()`

展開全部(共 57 行)

- `NewObject<T>()` for UObjects — never raw `new`, GC won't track it

## UPROPERTY and UFUNCTION
- `UPROPERTY()` required for Blueprint access — and for GC tracking
- `UFUNCTION()` for Blueprint callable/events — also required for replication
- `EditAnywhere` vs `VisibleAnywhere` — edit allows changes, visible is read-only
- `BlueprintReadWrite` vs `BlueprintReadOnly` — controls Blueprint access level

## Actor Lifecycle
- `BeginPlay` after all components initialized — safe to access components
- Constructor runs on CDO (Class Default Object) — don't spawn actors or access world
- `PostInitializeComponents` before BeginPlay — for component setup
- `EndPlay` for cleanup — called on destroy and level transition

## Tick Performance
- Disable tick when not needed — `PrimaryActorTick.bCanEverTick = false`
- Use timers instead of tick + counter — `GetWorldTimerManager().SetTimer()`
- Tick groups for ordering — `PrePhysics`, `DuringPhysics`, `PostPhysics`
- Blueprint tick expensive — move hot logic to C++

## Replication
- Server is authority — clients request, server validates and replicates
- `UPROPERTY(Replicated)` for variable sync — implement `GetLifetimeReplicatedProps`
- `UFUNCTION(Server)` for client-to-server RPC — must be `Reliable` or `Unreliable`
- `HasAuthority()` to check if server — before executing authoritative logic
- `Role` and `RemoteRole` for network role checks — `ROLE_Authority` is server

## Asset References
- Hard references load with parent — bloats memory, use for always-needed
- Soft references (`TSoftObjectPtr`) load on demand — for optional or large assets
- `LoadSynchronous()` or `AsyncLoad` for soft refs — don't access until loaded
- Blueprint class references: `TSubclassOf<T>` — type-safe class selection

## Memory and Pointers
- `TSharedPtr` for non-UObjects — reference counted, auto-deletes
- `TUniquePtr` for exclusive ownership — can't copy, moves only
- `MakeShared<T>()` for creation — single allocation for object and control block
- Never mix raw `new/delete` with smart pointers — choose one pattern

## Common Mistakes
- Accessing null actor in Blueprint — use `IsValid()` node before access
- PIE (Play In Editor) vs packaged build differ — test shipping build
- Hot reload corrupts Blueprints — close editor, build, reopen
- `GetWorld()` null in constructor — world doesn't exist yet, use BeginPlay
- Spawning in constructor crashes — defer to BeginPlay or later
- `FString` for display, `FName` for identifiers — FName is hashed, faster comparison