Hello to the zx basic community. I'm integrating the compiler into my own spectrum bot.

I created a sample sinewave graph

Hi everyone.

I'm trying to create a routine in assembly to copy an image from memory to the screen (a third of the screen, centered)
I know the assembly code to do this.
But, in ZX Basic, afaik, I must include the image from a bin file, and label it (I know how to do that)
So, if I need to use the address of the bin file, in Basic I would use @label (and this works)
But how to I use this label inside an asm routine?

Hi,
I have been trying all evening to work on a very easy task. Well, I thought it would be easy... Nothing really worked and the only positive sideffect is that I learned a lot about ZX Basic.

I would like to set the number's layout to xx.00 Because it looks nicer.

Examples:
1.5 > 1.50
1 > 1.00
.1 > 0.10

The only thing I could come up is to work on two levels.
level a: the correct numbers the computer is working with, e.g. 12.012345
level b: the number handed over to a Sub-Routine which switches the number to a string, searches for "." and gives back a formated string to the main routine.


Thus: the Spectrum works with level a (number), the user only sees level b (string).

Is it really that difficult or is it me being just to stupid...?
Lars

Hello all.
This is my first post here.
I used to do some platform games in Sinclair Basic back in the early 90s, and am now planning on writing a new game using ZX Basic (kudos to Boriel for the fantastic work btw)
I am just begining so I might be making some silly questions, sorry in advance

I am considering using HRPrintFast for sprites (in a similar way I used print back in the day, but without the 8pixel block limitation)
But the routine calls for 2 asm tables,  "Screentables.asm" and "Rotatetables.asm", which are not included (as far as I could see) in the library.
There is a link to a dropbox in the forum, but it's dead.
Can anyone help me get the asm code to make the routine work?

Thanks in advance.

Hello

So I've been using ZXBasic for a while, and after struggling for a while trying to compile some code finally realised some issues. To sum it up, I tried compiling Souls Remastered, since the keyboard input wasn't working on my Timex TC2048. However, while trying to compile I kept getting IF statement errors, which I attributed to the compiler itself. However, it turned out to be due to comments placed in front of the IFs, which were being recognized as one-line commands and "resolving" the IFs, creating errors with the END IFs afterwards. This seems to date back to a previous version before the one-line IF feature was implemented. In fact, many other ZXBasic games by Retrobytes and even the BerkzMan game from the tutorials page seem to expect this feature to be absent in order to compile, so providing a solution seems like a must.
So what do I propose? Well, I see two solutions: One, adding a legacy option for the compiler, say -L. This would be the easiest, and allow compilation of unmodified older code.
Two: implementing a routine that counts all IFs and END IFs in the program flow and checks if they are the same, as well as checking for comments in front of IFs. This may be a more robust solution, letting everyone program as they want without having to check some obscure command line option.

Aside from that, there seem to be a few other bugs. There seems to be no check for writing to memory above the 64k limit, since I have written a few programs that, when loaded through the BASIC loader, give an Out Of Memory error on the Spectrum. Other than that, there seems to be a bunch of data added along the print command, which I assume is a character set. But is this really necessary when the program only uses UDGs or spaces? In that case, the whole set could be left out, saving a decent amount of space. It could even be optionally left out, and swapped for the ROM character set.

Well that would be all, please say what you think

I have now spent over a year developing a prototype, to a short demo game and on to the new game, Framed!

You can follow the progress here:- 

Game Dev Blog » My Computer World

and how it started
Retro Game Dev » My Computer World

Not sure when it will be finished though as this done in my spare time.

I made a new game

2 pixel scrolling city bomber type game, with a story built in.

Please let me know what you think. 

Credits:

zx basic,
putChar
zx0
zx paint
beepfx
beepola
DamienG fonts

get it here

Hi, quick question:


Programming styles aside which performs better at run time, WHILE or FOR/NEXT ?

I will guess with both are the same? :-)

Thanks

I made a mine sweeper game for the zx spectrum.

the code is here. 


https://gitlab.com/JB1zzel1/mine-sweeper-zx-spectrum


I'll release it as a tap file with graphics when its finished.

The game is fully working as it is. just fine tuning everything now.