are you using any library? If yes, please credit the library author
Why it’s a good idea to give credit by Corey Wainwright.
Taifun
3 Likes
Nope, not a library, i took reference from some open source GitHub projects
Then please add external links to the GitHub projects.
3 Likes
Umm why? reference is not using the full library but just really small parts of code .
That is still work from others. As you can see from these screenshots, other developers also give credit.
2 Likes
An example except taifun? look taifun is very good and gives credit for every small things but in case of me and others i dont remember from where i take references because i look at a lot of codes for reference so i cant give credit for 100 codes.
Try to understand. 
2 Likes
However I have customized it much [listeners, custom db, colors, music,etc]
I will make my sources public soon too 
5 Likes
You might want to add this reference by editing your topic
1 Like
Nice job.
In the world of App Inventor having an index of 0 is strange. Indexes start with 1. So to make this work...
I have to subtract a 1 from the index.
Can you change the extension so it accepts 1 as the start of the index instead of 0?
2 Likes
When i first start the game the stones jump 2 positions. When the first stone hits the bottom by using the bottom button then the following stones jump 1 position. If i don't use the bottom button the stones will keep jumping 2 positions.
3 Likes
We provide these kinds of extensions so that you can make games easilly which is not possible with any blocks or in-built components
Tetris and Tictactoe of course can be done by in-build blocks/components, WITH NO NEED of extension.
In case you are intresting, you may visit here:
1 Like
Probably there is, but does this Tetris extension have more functions than the basic Canvas component?
I'm not sure if some feature is still missing even after writing 1k + lines of code
If it takes this much in java itself, you could easily calculate number of blocks needed to do the same 
1 Like
But can you imagine the size of app and the number of blocks
And also it is more better to use an extensions instead of reading whole guide and wasting 2 3 days which can be done in 10 mins with extensions
And also many people are not interested to see long long guides
And one more thing
Theses kinds of apps aren't responsive
And with extensions developer can do it easily
As my Tic tac toe extension is responsive for all the screens
1 Like
so everytime you want to make a app/game, you will check if there is any extension for this whole app? Can you make all the extensions for all the app/game?
App Inventor is mainly for beginners to learn/think how to code/program. Now you have done every thing for them.
yes you have put a lot of efforts on this extension, but for me I still don't think 'one extension is only for one specific game' is good idea.
And make a responsive app is not that difficulty
3 Likes
It depends if you want to learn App Inventor's blocks or learn Java's code, or if you want to learn App Inventor or you want to create apps. People can decide whether to use Canvas or to use Tetris.
I think Tetris is still good. It has a nice UI, it has some useful functions, etc. Also, Tetris has blocks that detect the user's interaction.
1 Like
But I have seen many people uploading their applications to play store which are made by App inventor or its clones
Which doesn't makes sense if user wants to learn basics of programming and those users prefer more simpler way like extensions
And I fully agree with @gordonlu310
1 Like