A game where maths challenges fall down from the sky and you can shoot them by typing the correct answer.

Releasing a new Version

• Do git tag | cat and decide on the new version number
• Update VersionName and VersionCode in /app/build.gradle
• Commit this change
• git push
• git tag <new version number>
• In Android Studio, do Build / Generate Signed Bundle / APK...
• Upload the new AAB to Google Play
• git push --tags

Credits

• Cannon fire sound: https://www.freesfx.co.uk/download/?type=mp3&id=14604
• Cannon explosion sound: https://freesound.org/people/cydon/sounds/268557/
• Maths exploding: https://freesound.org/people/grunz/sounds/109662/
• Maths arriving: https://freesound.org/people/GameAudio/sounds/220202/
• Wrong answer: https://freesound.org/people/Autistic%20Lucario/sounds/142608/
• Level cleared: https://freesound.org/people/sagetyrtle/sounds/32260/
• Key up and key down sounds: Made them myself using Audacity
• Background image: https://pixabay.com/sv/stj%C3%A4rnor-stj%C3%A4rnbilden-sky-1245902/
• Music: https://www.bensound.com/royalty-free-music/track/sci-fi
• Medal-earned tada: https://freesound.org/people/plasterbrain/sounds/397353/

NOTE: If you add to this list, also update app/src/main/res/raw/credits.txt.

TODO Misc

• Make commutative medals for each 10% increment of completeness
• Add (more) subtraction medals
• Add (more) division medals
• In LaunchClearedActivity, ensure the fanfare plays when the dialog pops up
• Make Spotless (in app/build.gradle) apply license headers
• Make Spotless (in app/build.gradle) format more kinds of files
• Run unit tests in CI
• When showing correct answer for "53=15", show also "35=15", but don't show "6*6=36" twice
• Get Google to recommend us for tablets
• Make the level-failed answers dialog look better
• Fix volumes of all sounds so that they are good relative each other.
• Cheerier level-cleared image
• Make sure that a RuntimeException from GameActivity.levelCleared() crashes the app
• Add to the launch screen a list of cleared levels and how many seconds each took down to one decimal. Enable the player to select an older level and re-play it.
• Consider making the navigation bar white on black during the game to blend in better with the keyboard.
• Hide controls by default so that we get the full-screen experience, good for production, search for mHideRunnable. Verify that we can easily show the controls when they are hidden.
• Pause game while controls are visible
• Remove click handler from GameView to force full screen, but verify that swiping down from the top still works
• Draw trails after shots; make them more rocketlike

DROPPED

• In the Model, create a way to iterate only over our FallingMaths objects. Could have done something like this, but it feels too complicated. Suggestions welcome.
• Stop all the invalidate() calls when the simulation is frozen. Can't see how this would help with much of anything.

DONE

• Make text move down from top
• Add more falling text when the first text is 20% down
• View controls by default so that we can pause the game easily, good for development.
• Add a numeric keyboard
• Fire away numbers when keys are pressed
• Make maths assignments fall from the sky
• Shoot at maths assignments when the right answer is entered
• Fire a slow red shot when a wrong answer is entered
• Kill player when some maths lands
• When player is killed, freeze the simulation after a delay.
• Log frame rate on emulator (we're fine)
• Log frame rate on a 10" tablet (we're doing great)
• Show correct answer on screen when the player dies.
• Tune the hit areas for the keys on our keyboard
• Add a launch screen
• Dismissing the level-failed dialog should go to the launch screen, no matter how it is dismissed
• Add a bottom margin below the keyboard, the layout looked cramped without that on my phone.
• Show level-success dialog after clearing a level
• Add sound effects
• Add feedback on key presses
• Keep level state throughout the app
• Launch screen should say which level will be launched
• Make our keyboard react to actual digits presses from a real keyboard. Nice during development.
• Pick maths depending on level
• Tune game to 20s for a maths to fall, add one more every 50%
• Drop easier maths faster than harder maths
• Launch screen background image
• In-game background image
• Add a music score
• Validate performance now that we have the in-game background image
• Add a license
• If you clear one level and start the next, then press the back button to go back to the start screen, make sure to update the button contents with the correct level number.
• Pressing back in the you-failed dialog should go to the launch screen
• Make an icon
• Add a privacy policy
• Add a credits list of some form to the launch screen
• Make a "Feature Graphics"
• Actually publish on Google Play
• Add tablet screenshots to Google Play
• Test clearing an Addition level and then launching the next
• Add unit tests for data migrations between PlayerState and PlayerStateV2
• Add a mode for addition
• Add unit tests for PlayerStateV2 persistence
• Run only one launch activity
• Make operators bigger on the launch screen
• Add a mode for division
• Add a mode for subtraction
• Make Google Play Feature Graphics nicer, starry background and metally letters. Blender!
• Adapt font sizes to screen
• Hand out medals for various achievements
• Run spotlessApply automatically when building (in app/build.gradle)
• Make everything translatable
• Translate into Swedish
• After finishing Multiplication level 13 you only get medals for completing times tables 1 and 2. Verify that this is as it should. Looks about right; 3*10 is on level 14, so after clearing level 14 new medals will start dropping in.
• Add medals for 25%, 50%, 75% and 100% done for each way of counting
• Make the actual medal images look nicer; the silver one is OK, the others not so much
• Add (more) addition medals
• Make a more numbery icon