Perforce version control software is integrated into the Sandbox Editor, furthermore the Sandbox Editor automatically detects if Perforce is available or not.
Installation and Setup
In order to integrate Perforce with the Sandbox Editor, Perforce must be properly configured on your PC and with the environment variables P4CLIENT, P4PORT, and P4USER.
To test if your setup is correct, use the P4.exe command-line utility (supplied by Perforce) to sync files.
GameSDK\Levels\ directory syncs with Perforce, the Sandbox Editor can be started.
Go to the Preferences window under Edit -> Preferences:
Under General Settings -> General make sure that the Enable Source Control checkbox is checked. This integrates Perforce with the Sandbox Editor.
While saving a level that was synced from Perforce, a message box will prompt you about replacing the *.cry file. Click either the Overwrite or Check Out boxes.
Once the *.cry file has been checked out or overwritten through the Sandbox Editor, then the Perforce client should be used to prepare for the submission of files.