Setting up Hammer to make Fortress Forever maps can be a major pain. Thankfully, Darkness has made a tutorial that makes setting up Hammer very easy!

How to set up Hammer

First we have to change the launch options.

So go to your tool section on steam.
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Next Right click Source SKD and click properties
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once your instead click on Set Launch Options
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In the Box type -engine ep1 (some people might have to add a -nop4 after ep1)
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Then click OK then click close, and start up Source SDK
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Start up hammer with current game as Half life 2 then once started click the tools tab up top and click options
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Next click Edit beside Configuration
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Type in Fortress Forever and click ok
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Next Fortress Forever Should appear and if it does Click the Close button
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Now you should be at Configure Hammer again, click the arrow next to Hl2 and click Fortress Forever
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ok fill in all the information you see in this picture for your configuration (if you have something different use that then)
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Game Data files
$SteamDir\steamapps\SourceMods\FortressForever\for tressforever.fgd

Texture Format
Materials (Half-Life2)

Map Type
Half-Life 2

Defualt PointEntity class
info_script

Default SolidEntity class
func_detail

Default texture scale
0.25

Defualt lightmap scale
16

Cordon texture
tools/toolsskybox

Game Executable Directory
$SteamDir\steamapps\SourceMods\FortressForever

Game Directory
$SteamDir\steamapps\SourceMods\FortressForever

Hammer VMF Directory
$SteamDir\steamapps\SourceMods\FortressForever\maps

Next click the Build Programs Tab and under configuration click Fortress Forever
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Next this section should look exactly like this
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Game Executable
$SteamUserDir\sourcesdk\hl2.exe
BSP Executable
$SteamUserDir\sourcesdk\bin\ep1\bin\vbsp.exe

VIS Executable
$SteamUserDir\sourcesdk\bin\ep1\bin\vvis.exe

RAD Executable
$SteamUserDir\sourcesdk\bin\ep1\bin\vrad.exe

Place compiled maps in this directory before running the game
$SteamDir\steamapps\SourceMods\FortressForever\maps

After that click apply and then ok, and exit hammer and under current game select Fortress Forever
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After that start up Hammer and you should be ready to go!!

Mapping Intro