Add new command line option: -display

[sebholt]

Pull Request Type

• GitHub Workflow changes
• Documentation or Wiki changes
• Build and Dependency changes
• Runtime changes
  • Render changes
  • Audio changes
  • Input changes
  • Network changes
  • Other changes

Description

This introduces a new command line option -display that lets the user select the display on which the game should run on.
It is useful in multi-monitor setups where the game now can be run on any of the given monitors.

Related Issues

Screenshots (if applicable)

Checklist

• I have tested my changes locally and verified that they work as intended.
• I have documented any new or modified functionality.
• I have reviewed the changes to ensure they do not introduce any unnecessary complexity or duplicate code.
• I understand that by submitting this pull request, I am agreeing to license my contributions under the project's license.

Additional Comments

[sebholt]

For reference, I followed this tutorial about multi monitor support in SDL2.

I've been motivated for this patch by the fact that my good/gaming monitor isn't the SDL default monitor and I always have to switch the monitor manually after starting the game.

[Lgt2x]

Hey, thanks for the contribution! the feature works as intended on Windows, it's a good improvement. I could not make it work on Linux, but that's possibly due to my peculiar monitor setup, or a bug in SDL2 upstream.