View source for Engine Tools

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[[File:Particles asw unadorned.jpg|thumb|The [[Particle Editor]].]]
[[File:SFM snap UI.png|thumb|The [[Source Filmmaker]].]]
[[File:MaterialEditor.jpg|thumb|The [[Material Editor]].]]
[[File:CommentaryEditor.jpg|thumb|The [[Commentary Editor]].]]
[[File:Actbusyeditor.jpg|thumb|The [[ActBusy Script Editor]].]]
[[File:EntityPlacementToolscreenshot.jpg|thumb|[[Entity Placement Tool]].]]
[[File:Deferred_phong_ref.png|thumb|The [[Light editor]].]]
[[File:Shadereditor_tutorial_assign.png|thumb|The [[Source shader editor]].]]
Bundled with {{Source|4}} are various engine related tools that help with doing various tasks.

== List ==
# [[Particle Editor]]
# [[Material Editor]]
# [[ActBusy Script Editor]]
#[[Entity Placement Tool]]{{only|{{l4d2}}}}
# [[Commentary Editor]]
# [[Foundry]]
# [[Source Filmmaker]]
# [[Light editor]] {{asd|only|addtext={{p2d}}{{lw}}}}
# [[:Category:SourceShaderEditor|Source Shader Editor]] {{only|{{asd}}}}

== Usage ==
To launch a game or mod in tools mode, run a [[command line|command]] like this:

 hl2.exe -tools -nop4 -game "path to gameinfo"

Failure to specify <code>-nop4</code> will lead to the engine exiting silently.

When the game has loaded you will be presented with the first tool that was loaded, probably the Actbusy one. To change to a different tool use the Tools item in the main menu.

Launching the [[Source shader editor]]:
  hl2.exe -shaderedit "path to gameinfo"

== Setting Key Bindings ==
to set key bindings click Edit -> Key Bindings

the Key Bindings Editor window will appear

[[File:KeyBindingsEditor.jpg]] 

{{Todo|Explain the Key Bindings Editor}}

=== Loading new tools ===
{{warning|You are likely to encounter instability if you try to mix engine branches.}}

In {{l4d2|4.1}} and later you can manage tool availability with the <code>toolload</code> and <code>toolunload</code> console commands or by editing the engine's <code>bin/enginetools.txt</code> file. There is a GUI window for this too but it's currently broken.

In earlier engine builds the tools system is locked down, probably to ensure that we don't run any of the tools that were leaked in 2007 from Valve in the initial {{tf2|4.1}} beta. They can still be run by obtaining a less-than-legal copy of the beta but of course that restricts you to a ''very'' old build of the game.

== Development ==
The SDK provides some header files at <code>public\toolframework\</code> with which new editor tools can theoretically be written. There is no sample source code, however.
[[Category:Modding]]<!--Why?-->

[[Category:Official Source Tools]]

[[Category:Source]]