Rusty Engine 3.0

[CleanCut]

Big Important Stuff for 3.0

• Volume for sound effects, done in Started to work on soundfx volume #14
• Make it so users can access a user-defined custom state struct instead of using generic vectors and hash maps on the GameState struct. Work in progress in Major refactor: Macro Approach #15
• Enable users to bring their own assets
  • sfx & music - done in Add ability to specify files to play as music or sound effects #20
  • sprites - done in Allow custom sprites, introduce collider files, collider_creator example #24
  • fonts - done in You can choose a font for your text actor! #19

Other stuff that I managed to get done for 3.0

• As part of this, I'd like the constants to show up on the index page of the documentation - done in Make consts show up on front page of docs #23
• Write a proper tutorial, resolves Can you write a tutorial for it? #10, done in Write the tutorial #25 and Publish tutorial #26
• I don't really like the Actor and TextActor abstractions. The point of this engine is to avoid abstractions. Let's rename them Sprite and Text, respectively. Done in Rename TextActor to Text, TextActor::text to Text::value #21 and Rename Actor to Sprite #22

Decided to do later

• Use sccache on Windows #17
• Complete more scenarios references and/or instructions
  • Began one in WIP space invaders reference #12
• Make sure everything is documented (this is mostly done, but I need to do a final pass)
• A supported way to load/save state

[CleanCut]

Screenshot of the updated example.

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You can provide your own user-defined struct for game state, now!

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Now you can choose a font for your text actor!

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You can now play custom sound effects and music!

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Removed unnecessary "Actor" terminology:

• Actor is now Sprite
• TextActor is now Text

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You can now load arbitrary images as sprites! Also, there is a collider_creator example that will let you load a sprite and create a collider file for it, as in the screenshot below (this random image file is not in the asset pack).

Oh, and colliders can now (optionally) be rendered with debug lines. Very nice. 😄