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Hammer++ is a community-made modification of the Valve Hammer Editor for Source that provides an updated, more stable, feature-rich version of the editor.

Hammer++ currently supports the following branches of the Source engine:

It is also included with Military Conflict: Vietnam, in lieu of vanilla Hammer.

Hammer++ for Counter-Strike: Global Offensive is no longer supported; Ficool recommends using Garry's Mod Hammer++ and porting the lightmapped_4wayblend shader. Alternatively, use Military Conflict: Vietnam's version of Hammer++.

Other games/mods tested

Main article: Hammer++/Docs/Installation for Other Games

Important:In order to use CS:GO Hammer++, you must have the csgo_legacy beta branch installed for

Counter-Strike 2.


Game	Hammer++ Version	Notes
Portal 2	Garry's Mod	Portal 2 support still has some problems, this will be released at a later date.
Portal 2: Community Edition	Garry's Mod?	Check out the issues on the main page. Support by developers is not planned, and usage is strongly discouraged; some Hammer++ features will be added to Strata Hammer.
Alien Swarm	CS:GO
Half-Life Deathmatch: Source	Source 2013 Multiplayer	Configure Hammer for Half-Life: Source, then install to game's `bin` folder normally.
Half-Life 2: Deathmatch	Source 2013 Multiplayer	Install to game's `bin` folder normally.
Left 4 Dead	L4D2?	Not tested
Momentum Mod	CS:GO	^[confirm]
Source Filmmaker	CS:GO
Titanfall engine branch games	CS:GO	^[confirm]
Day of Defeat: Source	Source 2013 Multiplayer	Install to game's `bin` folder normally.
Black Mesa	Source 2013 Multiplayer	Check out the issues below in the main page. A separate version for Black Mesa is not planned.
Black Mesa (2012 mod version)	Source 2013 Singleplayer	Install to Source SDK Base 2013 - Singleplayer's `bin` folder and add a game configuration pointing to the mod; the Source 2013 SP compilers generate BSPs that are compatible with Source 2007.
Mapbase	Source 2013 Singleplayer	Check out the issues below in the main page.
Postal III	Source 2013 Singleplayer	Requires modification to Postal 3's FGD file(s); Recommended to use Postal 3's compilers instead; Some Hammer features from Postal 3's are missing like 'prefabs'; Requires Source SDK Base 2013 MP/SP to be installed; Requires folder linking inside SDK Base's 'sourcetest' folder to load assets; Hammer++ will crash if placed inside Postal 3's bin folder.
Hunt Down the Freeman (launch version)	Source 2013 Singleplayer
Hunt Down the Freeman (latest)	Source 2013 Multiplayer	This build uses Source 2013 Multiplayer to reduce map size.
TeamSpen's Hammer Addons	Any which supported by TeamSpen's Hammer Addons	Check out the issues below in the main page.

Features

Accurate lighting preview
Upgraded graphic fidelity
Significantly better stability
Particle rendering
2D + 3D skybox preview
New model browser, particle browser, color editor, and keybinding editor
Realtime display of fog and ropes
Variety of new tools such as physics simulation, gizmo manipulation, drawing of polygon shapes, and convex brush merging
New func_instance tools
Quality of life improvements
... and much more!

A more detailed feature list can be found on the Hammer++ website and you can support ficool2 via Ko-fi

Caveats

Bug:Always uses Windows's high-DPI scaling setting, even when scaling override mode is set to "Application" in

File Explorer's compatibility settings for

hammerplusplus.exe. This can result in less real estate than

Hammer 4.x, depending on Windows settings.

Warning:

Does not support some features from Hammer 4.x, such as "Convert WAD to VMT...", or loading GoldSrc ".MAP" files directly.
Ignores %notooltexture, with no option to disable this change.
Lighting preview ignores _minlight.

Additional bugs can be found in the official issue tracker, which is no longer maintained.

Bugs/Limitations with unsupported games

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Black Mesa

Works with Source 2013 Singleplayer version. However, there are some bugs and issues due to which you will not be able to work constantly.

New lights do not work correctly

Entities with "newLight_" and "newLights_" prefixes don't work with SmartEdit and attempting to replace an entity with one of these will cause a obsolete error.

A new light point placed with the Entity Tool.
npc_gman after being replaced by newLight_Point.

This is because new lights use capitalized letters in classname. Because of this, Hammer++ cannot read them normally. You can fix it by replacing capitalized letters with lowercase, with this fix the game will work with new lights like you are using Hammer. However, you will still not have any preview for new lights.

Note:Similar issue with npc_xortEB.

Lightmapped_4WayBlend is not loaded

You will not be able to work with Xen levels and some Earthbound outdoor levels, since this shader is used for surfaces everywhere.

Hammer
Hammer++

Hammer
Hammer++

Workaround: Use the Hammer++ version for

Counter-Strike: Global Offensive, as it is the only version of Hammer++ that supports Lightmapped_4WayBlend.

Note:You will need to port the game's assets because it doesn't use or support the old model format.

No surface blend preview

WorldVertexTransition was replaced by LightmappedGeneric in Black Mesa. This means that you cannot see blended surfaces in Hammer++, since this feature is not provided.

Hammer
Hammer++

GRPortal is not loaded

This shader is used for nihilanth's portals.

Hammer
Hammer++

Physics Tool doesn't work properly with new ragdoll entities

prop_ragdoll_original and misc_dead_hev are ragdoll entities, Hammer++ doesn't know about this.

Workaround: Add ragdoll() in FGD for these entities.

prop_ragdoll_original and misc_dead_hev simulating as general objects, but prop_ragdoll works fine.

Confirm:More ?

Portal 2: Community Edition/ Strata Source

Mainly works with the Counter-Strike: Global Offensive version. Hammer++ will not provide features from Strata Hammer and the engine (mainly UI elements and how it works with content). The convenience of its usage will depend on what you plan to do.

Only supports the Counter-Strike: Global Offensive model format

Strata Source supports all model formats from any game, including old games. Hammer++ for Counter-Strike: Global Offensive only supports the model format from Counter-Strike: Global Offensive, so you'll need to port models if they do not use this format.

Workaround: Use the Source 2013 Singleplayer version

No `Scale Override` preview

Static props support the Scale Override keyvalue (similar to Source 2). You will not see changes in Hammer++.

Custom folder is not supported

Strata Source supports the custom folder. Hammer++ for Counter-Strike: Global Offensive doesn't.

Workaround: Use the Source 2013 Singleplayer version

Doesn't read `mounts.kv`

mounts.kv is a safe way to mount content from other games without editing gameinfo.txt. Hammer++ doesn't read this file.

Escape sequences are not supported

Only Strata Hammer supports escape sequences.

Mapbase

Works fine with Source 2013 Singleplayer version. Some custom shaders may work incorrectly. Some custom features will not work as expected with Hammer++ features.

SDK_Cable doesn't work properly

Display skybox instead of a cable texture.

An example.

Spotlight textures don't apply to spotlight preview

Mapbase supports customization of the beam and halo texture. Hammer++ always draws the standard textures.

An example. Used obsolete icon for halo and electric texture for beam.

TeamSpen's Hammer Addons

Not a game, but it has some compatibility issues as well. Some issues make it difficult to use together with Hammer++.

Sprite tries to be applied as a model for helper

TeamSpen's Hammer Addons uses model helper for sprite entities, this allows you to place them more accurately than with the white cube. Copy and paste cause the helper model to use the value from model property name, which sprites use to display sprite texture, this causes the helper model to use a nonexisting model and replace it with a placeholder. Fixes with Undo button. Doesn't happen when you place a sprite entity via Entity Tool or when you replace an entity with a sprite entity.

An example.

Confirm:More ?

External links

Official Hammer++ Website

Hammer++/en

Contents

Other games/mods tested

Features

Caveats