Unity场景和代码合并以及UnityYAMLMerge的使用

1.首先是.gitignore的配置。

# Folder config file
Desktop.ini

# Recycle Bin used on file shares
$RECYCLE.BIN/

# Windows Installer files
*.cab
*.msi
*.msm
*.msp

# Windows shortcuts
*.lnk


### Unity ###
/[Ll]ibrary/
/[Tt]emp/
/[Oo]bj/
/[Bb]uild/
/[Bb]uilds/
/Assets/AssetStoreTools*


# Folders designed to be part of repository, but not their content

/_NonVersioned/*
!/_NonVersioned/README.md

/Assets/_NonVersioned/*
!/Assets/_NonVersioned/README.md
!/Assets/_NonVersioned/README.md.meta
!/Assets/_NonVersioned.meta

/Builds/*
!/Builds/README.md

# Files to be excluded

## Files generated by Visual Studio / MonoDevelop
ExportedObj/
obj/
*.svd
*.userprefs
/*.csproj
*.pidb
*.suo
/*.sln
*.user
*.unityproj
*.booproj


# Unity3D generated meta files
*.pidb.meta

## Files generated by OS
.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
ehthumbs.db
Thumbs.db

# Unity3D Generated File On Crash Reports
sysinfo.txt

# Builds
*.apk
*.unitypackage

2.然后是.gitattributes的配置（所有工程最开始就应该做好这两步）。

* text=auto
# keep lf on unity files
*.asset text eol=lf
*.meta text eol=lf
*.prefab text eol=lf
*.unity text eol=lf

3.在菜单Edit > Project Settings > Editor中打开Inspector，将Asset Serialization部分的Mode改成Force Text。

4.在SourceTree中设置如下选择 工具->选项->比较->外部差异对比合并->自定义->
对比命令如下:D:Program FilesUnityEditorDataToolsUnityYAMLMerge.exe(找到自己电脑中UnityYAMLMerge.exe的路径) 参数如下：merge -p $BASE $REMOTE $LOCAL $MERGED

5.在UnityYAMLMerge.exe所在的路径，找到mergespecfile.txt文件，修改合并命令。
此项根据自己的需求修改，可以用下面推荐的N种方式。
修改之前的合并命令如下：
unity use "%programs%YouFallbackMergeToolForScenesHere.exe" "%l" "%r" "%b" "%d"
prefab use "%programs%YouFallbackMergeToolForPrefabsHere.exe" "%l" "%r" "%b" "%d"

修改之后的命令如下：
#Araxis Merge
unity use "%programs%AraxisAraxis Mergecompare.exe" /3 /a2 /wait /title1:"Other" /title2:"Base" /title3:"Local" "%l" "%b" "%r" "%d"
prefab use "%programs%AraxisAraxis Mergecompare.exe" /3 /a2 /wait /title1:"Other" /title2:"Base" /title3:"Local" "%l" "%b" "%r" "%d"

#Beyond Compare 4
unity use "%programs%Beyond Compare 4comp.exe" "%l" "%b" "%r" "%d"
prefab use "%programs%Beyond Compare 4comp.exe" "%l" "%b" "%r" "%d"

6.合并说明：通常情况下第一栏是local分支，第二栏是base分支，第三栏是remote分支。