Configuring Hammer++ for Half-Life: Source

Preparations

1. Install Hammer++ Source SDK Base 2013 Singleplayer to your Half-Life 2/bin directory AND DONT OPEN IT WOULD LEAD TO BAD CONGFIG 2. Edit HL:S's gameinfo so in between of "hashedcontent 1" and "FileSystem" lines you have "GameData "halflifesource.fgd"" and "InstancePath "D:\SteamLibrary\steamapps\common\Half-Life 2\hl1\maps\mapsrc\instances"" It would look somthing like that:

Gameinfo.txt that is ready

Note:"InstancePath" is an absolete path to your instance folder.

Configuring

• Setting up Hammer