游戏逻辑代码中用UE_LOG打印的信息，都存在 “工程名\Saved\Logs\”目录下，例如：
UE_LOG(LogTemp, Error, TEXT("Path is invalid:%s"), Path);
Locating Project Logs
https://wiki.unrealengine.com/Locating_Project_Logs
Editor Session Log
This log will be generated while running UE4Editor.exe or in a specific project. This file is almost always going to be included when needing a log.
| Log Name | Windows location | Mac Location |
|---|---|---|
| UE4.log UE4-backup-YYYY.DD.MM-HR.Mn.Sc.log | Engine\Saved\Logs\ | ~/Library/Logs/Unreal Engine/Editor/ |
| ProjectName.log ProjectName-backup-YYYY.DD.MM-HR.Mn.Sc.log | ProjectName\Saved\Logs\ | ~/Library/Logs/Unreal Engine/ProjectNameEditor/ |
Game Logs
This log will be generated while running a Cooked/Packaged Project (ProjectName.exe or ProjectName.app) Always include this if there is an issue with running the packaged game.
| Log Name | Windows location | Mac Location |
|---|---|---|
| ProjectName.log | WindowsNoEditor/ProjectName/Saved/Logs | ~/Library/Logs/ProjectName/ |
Build/Cook/Package Logs
These logs are generated any time you Build/Cook/Package a project. File >Package > Platform, Editor Launch On, UFE sessions.
| Log Name | Windows location | Mac Location |
|---|---|---|
| Cook.txt UAT_Log.txt | P4 - Engine\Programs\AutomationTool\Saved\Logs Binary - C:\Users\UserName\AppData\Roaming\Unreal Engine\AutomationTool\Logs\ | ~/Library/Logs/Unreal Engine/LocalBuildLogs/ |
Crash Logs
These are the logs that created and uploaded to CrashReporter.
| Log Name | Windows location | Mac Location |
|---|---|---|
| diagnostics.txt minidump.dmp ProjectName.log | C:\Users\UserName\AppData\Local\Microsoft\Windows\WER\ReportQueue (Note: C:\Users\UserName\AppData is invisible, just type the path on the address bar) | P4 - Engine/Saved/Crashes/CrashReport-ProjectName/ Binary: ~/Library/Application Support/Epic/Unreal Engine/4.X/Saved/Crashes/CrashReport-ProjectName/ (Note that /Users/yourusername/Library is invisible. Hold the alt-key and from the finder menu select Go->Library) |
Compile Logs
Any time a compile fails in Visual Studio or Xcode, copy all of the Output and paste into a txt file. Often times we only copy the last few lines that say it failed, which really doesn’t give the information that devs need.