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Messages - Cfyz

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1
Quote from: Aukustus
Also, is there a way to empty the queue of input keys or does the library support preventing the following thing?
Yes, you can drain the input queue quite easily:
Code: [Select]
while (Terminal.HasInput())
    Terminal.Read();

Personally, I don't like the idea of just skipping the events. Simply dropping them may lose input randomly. Imagine the user pressing a movement key and then some key combination. If you happen to drain the queue at a wrong time, you may be left with only a part of a combination which can drastically change the meaning (though it is hard to lose a simple state like Shift/Ctrl modifiers since BearLibTerminal keeps them available through Terminal.State).

Maybe a bit more robust solution would be to filter out only the repeats? Something like this:
Code: [Select]
int previous_key = Terminal.State(Terminal.TK_EVENT);
while (Terminal.Peek() == previous_key)
    Terminal.Read();

2
Quote from: Aukustus
I've got a png bitmap font that's not even transparent as there's a black layer behind the font file. In addition I've specified the font to be not transparent:
Code: [Select]
font: Cheepicus.png, transparent=black, ...
Actually, it is exactly how you make it transparent, you specify a color which is to be treated as transparent. I probably need to formulate it more clearly in docs. Indeed, specifying some random color like red will force the entire tileset to remain opaque.

Though while there may be different cases, usually you want the font to be transparent. It is more flexible, e. g. printing over various backgrounds, compositing over tiles, etc. The library tries to make font transparent and I've made it quite automatic over time, so the question how to switch it off instead actually made me lost for a few moments =).

Quote from: Aukustus
To not display them above the UI, I've got a empty tile in my tileset that I've rendered above the buffer row. However, when I print text to the message log area, the buffer map row is shown only under the text. In general, it seems that words printed displays everything under it.
Do you put those empty tiles and then print text in the same layer? By default, the library operates in 'replacement' mode in which tiles/characters replace previous ones (in that place within the same layer). If my guess is correct, the log is simply replaces empty tiles you've used to cover the map tiles making them visible again.

Besides more or less obvious solutions (making font opaque or switching to composition to not replace tiles), there is also one less known feature that may be particularly useful here: layer crop region. It instructs the library to show only a portion of a layer, kind of cutting away the rest. It was introduced precisely for such situations where it may be hard to hide extra portions of some complex scene with offset and overlayed tiles.

Btw, the Set method supports string formatting:
Code: [Select]
Terminal.Set("window: size=" + Constants.ScreenWidth.ToString() + "x" + Constants.ScreenHeight.ToString() + "; ...");may be
Code: [Select]
Terminal.Set("window: size={0}x{1}; ...", Constants.ScreenWidth, Constants.ScreenHeight);

3
And I am back. Mostly. Okay, in chronological order:

Quote from: carterza
I'm trying to figure out if there is a way to call terminal_read_str and obfuscate the input, for creating something like a password input field. <...> I know I don't have to use terminal_read_str but I do like the cursor functionality that it exposes.
No, the terminal_read_str function is a fairly simple wrapper over standard library input/output and its functionality is very limited. The only thing that is not directly available in API is a timed read which it uses to animate the cursor. I'll consider input obfuscation, but in the meantime it should be quite easy to write a custom read_str. Here is a simple outline for a custom read_str but without a cursor. For that you'll need to wrap the call to terminal_read, something along the lines of
Code: [Select]
int terminal_read_timeout(int timeout)
{
    for (int i = 0; i < timeout; i++)
    {
        if (terminal_has_input())
            return terminal_read();
        else
            terminal_delay(1);
    }
    return -1;
}
And flip the cursor every read that timed out.


Quote from: Zireael
Idly wondering if it'd be possible to combine bearlibterminal with PyQt?
It is hard to integrate any fairly complex custom input/output into a GUI framework, be it Qt or another one. Usually it is easier to completely rewrite one side to match the other =/.


Quote from: denizzzka
I am registerd just to ask: is mouse supported by BearLib terminal in Linux? <...> Maybe mouse events should be enabled before it can be catched?
Yes, you have to enable it explicitly. Specifically:
Code: [Select]
terminal_set("input.filter={keyboard, mouse}");
Yep, not the most intuitive part =/.


Quote from: Avagart
I remember that you are planning to switch to use SDL for bearlibterminal. Does it mean that you are going to drop support for true/open type fonts?
Nothing of the sort. The only thing I need from SDL is its cross-platform window and context management (I'll try to cut everything else away). From the user perspective transition to SDL should not even be noticeable at first. It is more about portability/stability and management costs.

4
Quote from: infinity
However, the function returns False regardless of whether or not the shift key is held down. <...> the function works when I set number lock off, but doesn't work when number lock is on.
I've looked into it a bit and was quite surprised by what they call Shift overriding NumLock. When you press Shift+4 you get the same scancode as when you press 4 without Shift, and what character is produced depends on the keystroke as a whole. However Shift+Numpad4 with NumLock on does not produce the scancode of the numpad key. Instead it imitates pressing the single left-arrow key by un-pressing the Shift key, sending an arrow keypress and restoring the Shift back to its original pressed state. And the system events that simulate this temporary Shift release are indistinguishable from the real key release and key press =|.

The only hint about the nature of Shift events is the inhuman speed they happen at: the Shift is released 0-2 ms before the corresponding arrow key event. Maybe I'll be able to filter  the events based on that.

P.S. I am away for about two weeks, so unfortunately I won't be able to test or fix anything in the meantime.

5
Quote from: Zireael
Is there a way to get FPS when using Bearlib?
Well, since BearLibTerminal uses explicit refresh (does not draw continuosly by itself, only redraws if necessary) I did not thought much about displaying FPS. Values like 0.1 would look weird =). Essentially, how frequent you call terminal.refresh() would be the FPS.
Though I do calculate it in the 'speed' entry of the SampleOmni and so does the Python port of the sample. Note that vsync is enabled by default and you need to disable it (the 'output.vsync' option) if you want more than 60-80 FPS.

6
Quote from: quejebo
I suppose the more precise use case here is to easily use separate font scales for the UI from the game's grid -- without the requirement for nice integer ratios between them.
Well, this comes up from time to time... The main obstacle is that text in pseudo-terminal output is not a separate entity, it is the same as other tiles (and vice-versa) and must abide the same rules. When you try to detach text from the grid, different nuances arise. How to remove that text from screen when you can't address it by x, y cell anymore? What z-order does it take, always above the grid? And between each other text piece?

7
Update 0.15.3 with various fixes: Windows / Linux / OS X / PyPi
  • Add font() function (select the current font by name, closes issue #33).
  • Fix adding sprite tiles to an atlas (closes issue #30).
  • Fix excess generation of 'character replacement' tiles.
  • Fix dynamic tile generation (individual to a font, closes issue #32).
  • Fix configuring several fonts in one set() call (closes issue #34).
  • Retrieve clipboard contents via terminal_get("clipboard").
  • Fix bitmap tileset reverse codepage (sparse tileset) handling.
  • input.cursor-blink-rate=0 disables cursor blinking in terminal_read_str().
  • Fix printing tab characters (configured by output.tab-width option).
  • Fix app hanging on reopening terminal in macOS (see issue #23).
And TODO list is like a few miles long >_<.

8
Quote from: Elronnd
In that case, how does the cursor blink work?
The library cheats by using an internal read with timeout, flipping the cursor visibility every time it, ugh, times out. I've been thinking about blinking and it feels like blinking is just a case of simple animation. It would be nice to solve both at once.

Btw, just a bit better pseudo-underline might be produced by overlaying 0x2581 (Lower One Eighth Block) instead of underscores.

9
Quote from: Elronnd
Is there a way to underline text or make it blink?  I can sort of make stuff underline by switching to another layer and printing ___, but there's a small gap in between them, and sometimes they overlap with the text in a way that's less than pleasing.
No, currently there is no such functionality. Underlining is theoretically possible (truetype fonts have some information and for bitmap fonts the library might try to do an educated guess).

Quote from: Elronnd
Also, is there a way to get bold or italic text other than loading an alternate font?
Again, currently no. If you are talking about automatically producing bold/italic variations from a single font, it is technically possible to implement (thickening or shearing the tile) but I think it would look pretty ugly. Ultimately the library would need to operate on relatively small bitmap tiles and geometric transformations of small bitmap images had never produced anything pretty.

10
Quote from: The Saber Cat
Other values, like terminal window name, are loading perfectly. How can I make it fetch custom values?
Hmm, should have worked. Do you call terminal_get after terminal_open? Try to run the app from a console with BEARLIB_LOGLEVEL environment variable, e. g.
Code: [Select]
~/test$ BEARLIB_LOGLEVEL=trace ./SampleOmniThis will force the library to pring debug info about what configuration file it is using and what properties it has found.

11
Quote from: Elronnd
First is that setting terminal_set("window.fullscreen = true"); doesn't do anything.  The second is that although if you set the window to be resizeable, you can resize it, if you try to get the terminal size you just get the original size. <...> Interestingly enough, if I alt+enter while within the window, it fullscreens fine.  Even more interestingly, if I set window.fullscreen = true, while the window doesn't get fullscreened, I can then resize it even though I haven't set window.resizeable to true.
I've tested a few combinations of distros, desktop managers and windowing libraries (SDL, GLFW, SFML and my own implementation) and can only conclude that it is a complete and utter mess =(. On the same OS but different DM and vice versa the same X11 app may or may not resize and fullscreen properly. Sometimes it is clear who is wrong, sometimes not. Out of the libraries, SDL is the winner though sometimes even it is powerless.

I've honestly thought I would be able to provide a window implementation which, while not being as feature-rich as others, would be more compact (e. g. SDL is many megabytes in size) and more tuned to the exact situation (e. g. resizing in steps to match cell size). Yep, nope.

I've taken a deeper look at the SDL code and I can downsize it to something reasonable. Believe me, it is not as simple as --disable-everything in ./configure, you can disable almost nothing this way in the current SDL codebase. I've even tried to discuss this on their mailing lists but couldn't get through moderation (wtf?). I probably should file a bug.

12
Quote from: The Saber Cat
I'm trying to make my executable depend on libBearLibTerminal.so in the same directory, so I can zip them together, unzip on other Linux machine and run executable. But it sems that my executable depends on .../learn/bin/libBearLibTerminal.so, and not on the file in the current executable directory!
In Linux application dependencies (shared .so libraries) are not searched for in the same directory with application executable. By default only a few select system directories (e. g. /usr/lib64) are considered. It is possible to add extra paths to this list while linking the executable, this is what 'rpath' is. CMake automatically adds paths to the libraries from nonstandard locations to the application's rpath, which is why your executable looks for the libBearLibTerminal in the ../learn/bin. It does not depends on that exact file, it depends simply on 'libBearLibTerminal.so', but that path is the only path from the search list where such file is present.

Therefore if you want to mimic Windows behavior of loading libraries from the same folder, you need to manually add the '.' path to rpath of your executable. In CMake it is something along the lines of
Code: [Select]
cmake_minimum_required(VERSION 3.7)
set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
set(CMAKE_INSTALL_RPATH ".")
project(learn)
...
Though I'm writing mostly from memory.

Another common approach on the Linux is to wrap the application binary in the script which sets LD_LIBRARY_PATH environment variable before launching executable. This environment variable also provides extra search paths for dependencies.

13
What i meant by "environment" was general info like OS and distro, bitness, how it is run, etc. I got most of it, but exact distro name may prove to be useful. My intuition is saying it is related to FVWM (though it shouldn't be happening either way, I am using fairly standard X11 mechanisms), I will look into it. Does the "window resizing" from SampleOmni not working properly either?

As for the log level, the point was to enable it before everything else to see the process of switching to fullscreen.

14
Quote from: Elronnd
setting terminal_set("window.fullscreen = true"); doesn't do anything. <...> you can resize it, if you try to get the terminal size you just get the original size
Besides fullscreen not being implemented for macOS yet (>_<), everything else seems to work fine. I've checked setting fullscreen in Ubuntu and Windows, and you can also check resize yourself by running second-to-last entry in SampleOmni which illustrates reading new dimensions after a resize.

If the problem persists, please share the environment info, code snipped being used and a log file with 'log.level=trace'.

15
Whoa, the 'input.filter' option is was completely missing from the table at the configuration page >_<. The relevant option is mentioned on the separate page: reference:input#input.filter. Essentially, you need to add a plus sign to the list of events to enable their key-releases, e. g. input.filter='keyboard+'. The overall rationale is to behave similar to 'getch()' by default.

Honestly, the notation is quite meh. I would be glad if anyone came up with a better one.

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