Refactoring week occurs every two months. It's good for code to have time to rest, where we can clean up technical debt.

Refactoring backlog

• Source code is in /puzzle/level but assets are in /puzzle/levels. Does this make sense? Why should one be pluralized?
• test-level-settings-upgrader.gd should contain the backwards compatibility tests currently in test-level-settings.gd
• CareerRegion could use a utility method like all_level_ids() which includes the boss level and intro level, i think a few places could use it.
• Redesign 'RankCriteria' to be less crazy -- it currently calls to 'copy_from', 'fill_missing_thresholds' and 'calculate_rank' just for common use cases.
• LevelHistory.level_names() definitely returns level IDs, and a few places who call it have variables which should be something like 'level_id' instead too. Levels have names, but level history doesn't care about those
• Some .wav files are in /src. We should detect this in our delint script
• We use "BossLevelButtonScene" in some places and "BossLevelSelectButtonScene" in others, we should be consistent
• A few shaders are indented with spaces instead of tabs.
• "Career" mode should technically be called "Adventure" mode now... Does that affect all our paths and constants?
• We use the terms "boss level" and "goal" somewhat inconsistently, and progress-board-spots.gd even refers to a "finish". We should choose a consistent term, or at least rethink when we use these two terms.
• level-rank-achievement.gd should use rank_meets_grade instead of required_rank_for_grade to reduce the amount of code needed.
• Improve the method by which the 'dll' and 'so' files are included in your steam build. Right now they're expected to pre-exist in the /export/ folder which is strange.
• FreeRoamUi's SettingsButton can connect to SettingsMenu._on_Settings_pressed rather than needing a second redundant FreeRoamUi._on_SettingsButton_pressed method
• preset-keybind-row.gd should use onready instead of referring to $Value in its methods
• PuzzleDemo prints a warning message about "level doesn't define rank criteria"; this is referring to the blank level which PuzzleDemo defaults to.
• results-hud-blueprint.gd calculates goals in advance, but there's no need anymore. It used to calculate them in advance because the rank calculation process was slow.
• value: true -> value: (bool) true
• Instead of "SplashScreen" and "MainMenu" needing to edit SystemButtons's children to hack in their own quit text, SystemButtons should let them specify something similar to SettingsMenu's quit_type parameter: "main menu" or "quit"
• Our project version is in the .pot translation templates. We should automate this.
• A lot of the assertions in test-level-settings.gd are backwards: assert_eq(0, settings.rank.rank_criteria.thresholds_by_grade.size())
• If ResultsHud just tweened its y coordinate instead of its position, we would have avoided a few small bugs when rearranging its horizontal position.
• Extract a method from training_menu.gd to encompass all of the things you do when a level is loaded. We didn't refresh the level description which caused a bug.
• We have the 'recalculate ranks on startup' logic disabled for tests because it's too slow, but ideally it would just be faster. Maybe we could cache all of the level settings in memory or something like that.
• 'career_mode_finish' is lower-case in our SteamAchievements.tscn definitions. The rest are all upper-case.
• We've had a few bugs stem from yield(get_tree(), "idle_frame") calls. Some of these were resolved by swapping over to call_deferred, if it matters, so maybe we should just change all of them.
• The words "Spanish" and "English" keep hopping around in localizables-extracted.py. Can we sort them?
• The steam prepare_level_listeners and remove_listener_listeners would be more intuitively named connect_level_listeners/disconnect_level_listeners
• Every steam achievement calls SteamUtils.is_achievement_achieved(achievement_id), this could be streamlined with an is_achieved() utility method.
• Simplify the steam delivery process. Currently it involves 4-5 steps. It might be nice if the 'package' process created a 'steam-content' folder with filenames and contents exactly mirroring the steamworks-sdk\tools\ContentBuilder\content\ folder.
• ResourceCache.substitute_singletons() has some heavily nested logic which could be pulled out until utility methods, like substitute_singleton and initialize_singleton
• settings-keybinds-control.gd should initialize its child controls as onready instead of repeatedly calling get_node
• Change 'SettingsDialogs.confirm_new_save_slot()toSettingsDialogs.show_new_save_slot_confirmation()`. The verb "confirm" is ambiguous, since it could mean the player has already confirmed it, or that we're prompting the player to confirm it.
• More places can use the constants such as SettingsMenu.QUIT_TO_DESKTOP instead of SettingsMenu.QuitType.QUIT_TO_DESKTOP
• Update pybabel-extract.sh automation to preserve needs-review flags.
• career-data.reset() assignments are in a random order; they should be alphabetized like other places
• alphabetize show_difficulty_menu, show_give_up_confirmation, show_adventure_mode_intro in all contexts. The reenable-tips.gd script has them in a different order
• Warning ...does not define 'M' rank criteria shows up when giving up on a level. Suppress this warning in some way -- ideally not by squelching the message, but by changing the code's behavior so that the criteria is not calculated, or is calculated based on the level before it's cleared
• If one of your save slots has an old file, PlayerSave will keep upgrading it every time a new scene is loaded. It should only need to do this upgrade once (and it should save the results)
• PlayerSave.save_scheduled is out of order (public fields should be before private)
• Some code depends on the puzzle tile map cell dimensions of (72, 64) and they currently hardcode it. Extract a constant for 72, 64 dimensions that are used by spear.gd and tomato.gd for example.
• CellCritterManager's class name does not match its filename, critter-manager.gd