How to fix a font problem in Tetris?

CityAceE

The Tetris game from the bundled examples on the current Basic Engine builds has a font problem. Tell me, please, is there any way to fix this easily?

Dmian

Probably... It may be a difference in how the block elements are mapped in the used fonts (since the original was made for C64, and then adapted for Engine BASIC). I'll see if I can do something about it.

Dmian

Try this one:

tetrisbas.zip

2kB

CityAceE

Dmian
Thank you very much for your quick response! Everything is now working as expected, and I appreciate your help. However, I had hoped that this issue could be resolved with a simple command, such as changing the font or encoding, but I understand that this is also a valid solution. I noticed in the previous screenshots that there were small gaps between the blocks, but now they are all merged together. This is a minor issue, but it's still worth noting. I suggest attaching this corrected version to the Basic Engine distribution rather than the current version. This will ensure that anyone using the Basic Engine in the future will have access to the updated version with the fixes.

Dmian

CityAceE I think this program broke when the font “C64 Pro Mono” changed the way some characters were encoded. Engine BASIC changed from C64 Pro to Bescii (the font I created for BE), but that shouldn’t have been a problem, because I deliberately used the same encoding of glyphs to keep both fonts compatible. So, you should be able to change from Bescii to C64 Pro Mono and the game should look the same.

As for the tiles, Bescii has a specific glyph for Tetris-like games (check the F00A from the Pixel Art Characters: https://github.com/damianvila/font-bescii), but to use it I need to analyze the code to know where the character is inserted and use that instead. I’ll see if I can dedicate a bit of time to improve it, and after that I can submit a PR to the repository. I’ll let you know if there’s any progress.

Dmian

@CityAceE Here's a slightly better version. Besides using that specific character I mentioned, I added a few more keyboard controls (WASD and 8456), as the original keys don't work well in non English keyboards.

tetrisbas.zip

3kB

Edit: here's a screen capture

Dmian

One last version. I set the Tetrominoes colors right, as I didn't like the colors that appeared (I wanted the original Tetris colors). I guess I won't modify it further. 😝

tetrisbas.zip

3kB

Here's a screenshot with the new colors:

CityAceE

Thanks a lot! The last variant is better for me.

uli

FTR, I have replaced the Tetris demo with this version. After fixing the duplicate line numbers. 🙂

I also fixed a serious bug in LIST/SAVE triggered by this code. (It contracts PROC newpiece to PROCnewpiece, which causes an error when you save and then reload the program. That fix should show up in tomorrow's build as well.

Dmian

uli Oh! Wonderful! I was planning on submitting a modified file, but you spared me the trouble. 😄
Thanks a lot.

CityAceE

uli I also fixed a serious bug

I am very glad that I was helpful in testing and identifying bugs in this wonderful project!

CityAceE

One more bug in Tetris:

Steps for reproduce:

Wait for a Stick
Move it to the right border
Press the rotate button

Willard

The last OR statement in the line is causing the error.

Change line 410 to:

410 DIM cols(12,20)

and see if that fixes the error.

This is a quick fix, I haven't studied the code to look for any other ways to fix it.

Let me know if this works for you.