More functions

[toncho11]

We need to either port some Lua libraries or implement some functions directly into the base.

Here is a initial list of functions that are good to have on ELKS:

• sleep()
• press_any_key()
• read key https://stackoverflow.com/questions/17958309/is-there-a-get-keyboard-input-function-in-lua-arrow-keys
• ctrl+c signal handling

[toncho11]

So the ctrl+c should be something like that:

local function main()
    while true do
        print("Running... Press Ctrl+C to stop.")
        os.execute("sleep 1")  -- Simulate work
    end
end

local success, err = pcall(main)

if not success then
    print("Interrupted! Exiting gracefully.")
end

[toncho11]

@ghaerr What is the recommended way to perform millisecond sleep of 40 ms for example?
libc/system/usleep.c ? So it should be:

#include <unistd.h>
usleep(40000);

for example?

[ghaerr]

Yes, that's correct @toncho11.

[rafael2k]

How about wrapping some curses functions just like these ones:
https://github.com/rafael2k/bobcat/tree/main/src/curses

[rafael2k]

I think we should move all these functions to loslib, as it is an os-dependent function in lua definition.

[toncho11]

Yes, that's correct @toncho11.

Thanks. I see you used also:

void GdDelay(unsigned long msecs)
{
    struct timeval timeval;

    timeval.tv_sec = msecs / 1000;
    timeval.tv_usec = (msecs % 1000) * 1000;
    select(0, NULL, NULL, NULL, &timeval);
}

[rafael2k]

@toncho11, I'm not sure about which recent changes in drawcube.lua did this, but it is running out-of-memory after running some time. I feel some kind of memory leak in the new version.

[rafael2k]

Should we merge this one?

[toncho11]

Hi. I do not understand. #8 is already merged #8

[rafael2k]

I mixed up. Do we have keyboard input functions already in place?

[toncho11]

Not yet.

[toncho11]

Hi @rafael2k @ghaerr

I have created a new group called RetroBlit to host a few projects focused on graphics and game engine design for VGA. The first project called https://github.com/RetroBlit/luagfx forks this project and adds a new gfx API, optimized VGA mode X and relatively optimized Nano-X backend using the new gfx API. Direct VGA might be added later. Another project will be a C library that implements the same gfx game API. Some features are still not ready such as the keyboard handling, etc. But the VGA mode X backend is optimized and works well. You can try it here:

hd32-minix_luagfx.zip

Use it like this to try both backends:

luagfx robotjmp.lua
luagfxnx robotjmp.lua

I hope you like it.