Merge pull request #144 from Squiddim/main

Update linux.md with SteamTinkerLaunch Instructions

Author: RoseTheFlower

instructions/linux.md

@@ -1,11 +1,28 @@
 Although the solutions available here do not get tested on Linux before their release, Linux users have documented ways to get the solutions to work on their systems.
 
-### General suggestions
+## General suggestions
 When using a solution that needs to target the running game process, [ensure](https://github.com/RoseTheFlower/UltrawideIndex/issues/25#issuecomment-1650838775) that both run within the same Wine prefix. Consider trying [Bottles](https://usebottles.com/), which may simplify the process.
 
-### Instructions for DLL-based solutions
+## Instructions for DLL-based solutions
 The instructions below apply to the solutions that require dropping a DLL file into the game folder.
-#### Global
+### Global
 In Wine configuration, go to Libraries and add a new override for the applicable DLL libraries to be `native`, `builtin`.
-#### Steam-specific
+### Steam-specific
 On Steam, add `WINEDLLOVERRIDES="dsound=n,b" %command%` as a launch option, where `dsound` is the name of the .dll file.
+
+## Instructions for standalone injection-based solutions
+The instructions below apply to the solutions that require running an app after the game in order to target its process (e.g a trainer).
+### Steam-specific
+#### Steam Tinker Launch
+*(based on Squiddim's guide submitted to this repository)*
+1. [Install Steam Tinker Launch](https://github.com/sonic2kk/steamtinkerlaunch/wiki/Installation).
+1. Download the desired trainer-based solution found in this repository and unpack it.
+1. In the Steam client, go to the game's properties and set *Steam Tinker Launch* as the compatibility tool.
+1. Launch the game from Steam and click *Main Menu* (or press Space) once the Steam Tinker Launch window shows up.
+1. In the Steam Tinker Launch window, click Category -> Misc.
+1. Check the *Use custom command* box and select the trainer exe via *Custom command*.
+1. Check the *Fork custom command* box.
+1. Uncheck the *Use Steam Linux Runtime with Custom Command* box.
+1. Check the *Inject custom command* box
+1. Set *Inject wait* depending on the game (e.g. 15 seconds).
+1. Click *Save and Play*.