| Commit message (Collapse) | Author | Age | Files | Lines |
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This is quite useful because I used to have a long list of places in
which to invalidate the cache.
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I'm not sure this is very useful. I had an initial idea to stop using
screen_bottom1 in final_text_loc_on_screen, by starting from screen_top1
rather than screen_bottom1. But that changes the direction in which we
scan for the text line in situations where there is somehow no text on
screen (something that should never happen but I have zero confidence in
that).
Still, it doesn't seem like a bad thing to drastically reduce the
lifetime of some derived state.
Really what I need to do is throw this whole UX out and allow the cursor
to be on a drawing as a whole. So up arrow or left arrow below a drawing
would focus the whole drawing in a red border, and another up arrow and
left arrow would skip the drawing and continue upward. I think that
change to the UX will eliminate a whole class of special cases in the
code.
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Scenario:
modify a test to fail in the source editor
delete any settings in the 'config' file in the save dir
start lines.love
press C-e to switch to source editor
Before this commit, this scenario led to the following events:
the C-e keypress invokes App.run_tests_and_initialize()
the failing test results in a call to error()
the call to error() is trapped by the xpcall around the event handler in love.run
handle_error runs
Current_app is 'source', so love.event.quit() is triggered
love.quit() is invoked
source.settings() is invoked
App.screen.position() is invoked, which calls the test mock
Since App.screen.move was never invoked, App.screen.position() returns nil
The 'config' file is written without values for source.x and source.y
As a result, future runs fail to open.
This is likely a corner case only I will ever run into, since I'm
careful to never commit failing unit tests. Still, I spent some time
trying to figure out the best place to fix this. Options:
* don't write config if Error_message is set
but we do want config written in this scenario:
* we hit an error, source editor opens
* we spend some time debugging and don't immediately fix the issue
* we quit, with some new files opened in various places
* hardcode source.settings() to call love.window.getPosition() rather
than App.screen.position().
drawback: weird special case
* clean up test mocks before aborting
this seems like something we always want
I'm not very sure of my choice.
This bug doesn't leave me feeling very great about my whole app.
Arguably everything I've done is bullshit hacks piled on hacks.
Perhaps the issue is:
- naked error() in LÖVE apps never invokes love.quit(), but
- an unhandled error within my handle_error invokes love.quit() (via
love.event.quit)
Perhaps LÖVE should provide a way to abort without invoking the quit
handler. There's literally no other way in LÖVE to request a quit.
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I'm starting to feel better after replacing 1 line with 20 and 2 new
bits of global state. I'm now handling two scenarios more explicitly:
* If I change Current_app within key_press, the corresponding text_input
and key_release events go to the new app. If it's an editor it might
insert the key, which is undesirable. Putting such handlers in
key_release now feels overly clever, particularly since it took me
forever to realize why I was getting stuck in an infinite loop.
* Both 'run' and 'source' can hit the version check, so we need to be
able to transition from the 'error' app to either. Which
necessitates yet another global bit of state: Next_app.
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This is still ugly, but hopefully easier to follow.
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When I stopped running the version check before the tests I also stopped
initializing Version, which can be used in tests to watch out for font
changes across versions. As a result I started seeing a test failure
with LÖVE v12.
It looks like all manual tests pass now. And we're also printing the
warning about version checks before running tests, which can come in
handy if a new version ever causes test failures. The only thing that
makes me unhappy is the fact that we're calling the version check twice.
And oh, the fact that this part around initialization and version
management is clearly still immature.
I'll capture some desires and fragmentary thought processes around them:
* If there's an error, go to the source editor.
* But oh, don't go to source editor on some unactionable errors, so we
include a new `Current_app` mode for them:
* Unsupported version requires an expert. Just muddle through if you
can or give a warning someone can send me.
* A failing test might be spurious depending on the platform and font
rendering scheme. So again just provide a warning someone can send
me.
[Source editor can be confusing for errors. Also an editor! But not
showing the file you asked for!]
* But our framework clears the warning after running tests:
* If someone is deep in developing a new feature and quits -> restore
back in the source editor.
[Perhaps `Current_app` is the wrong place for this third hacky mode,
since we actually want to continue running. Perhaps it's orthogonal to
`Current_app`.]
[Ideally I wouldn't run the tests after the version check. I'd pause,
wait for a key and then resume tests? "Muddle through" is a pain to
orchestrate.]
* We store `Current_app` in settings. But we don't really intend to
persist a `Current_app` of 'error'. Only the main app or 'source'
editor.
[Another vote against storing 'error' in `Current_app`.]
* So we need to rerun the version check after running tests to actually
show the warning.
[Perhaps I need to separate out the side-effect of setting `Version`
from the side-effect of changing `Current_app`. But that's not right
either, because I do still want to raise an error message if the
version check fails before running tests. Which brings us back to
wanting to run the tests after raising the version check..]
One good thing: none of the bugs so far have been about silently
ignoring test failures. I thought that might be the case for a bit,
which was unnerving.
I grew similar muddiness in Mu's bootstrap system over time, with
several surrounding modes around the core program that interacted poorly
or at least unsatisfyingly with each other. On one level it just feels
like this outer layer reflects muddy constraints in the real world. But
perhaps there's some skill I still need to learn here..
Why am I even displaying this error if we're going to try to muddle
through anyway? In (vain) hopes that someone will send me that
information. It's not terribly actionable even to me. But it's really
intended for when making changes. If a test fails then, you want to
know.
The code would be cleaner if I just threw an unrecoverable error from
the version check. Historically, the way I arrived at this solution was:
* I used the default love.errorhandler for a while
* I added xpcall and error recovery, but now I have situations where I
would rather fall back on love.errorhandler. How to tell xpcall
that?
But no, this whole line of thought is wrong. LÖVE has a precedent for
trying to muddle through on an unexpected version. And spurious test
failures don't merit a hard crash. There's some irreducible requirement
here. No point making the code simplistic when the world is complex.
Perhaps I should stop caching Version and just recompute it each time.
It's only used once so far, hardly seems worth the global.
We have two bits of irreducible complexity here:
* If tests fail it might be a real failure, or it might not.
* Even if it's an unexpected version, everything might be fine.
And the major remaining problem happens at the intersection of these two
bits. What if we get an unexpected version with some difference that
causes tests to fail? But this is a hypothetical and not worth thinking
about since I'll update the app fairly quickly in response to new
versions.
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We could now get test failures before the version check, which might be
confusing.
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This came up when trying to integrate my apps with the vudu debugger
(https://github.com/deltadaedalus/vudu). In general, it's a subtle part
of LÖVE's semantics that you can modify event handlers any time and your
modifications will get picked up. Now my Freewheeling Apps will follow
this norm as well.
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before:
stack traceback:
[string "text.lua"]:9: in function 'draw'
[string "edit.lua"]:200: in function 'draw'
[string "run.lua"]:140: in function 'draw'
[string "main.lua"]:162: in function <[string "main.lua"]:155>
[C]: in function 'xpcall'
[string "app.lua"]:38: in function <[string "app.lua"]:20>
[C]: in function 'xpcall'
[love "boot.lua"]:370: in function <[love "boot.lua"]:337>
after:
stack traceback:
text.lua:9: in function 'draw'
edit.lua:200: in function 'draw'
run.lua:140: in function 'draw'
main.lua:162: in function <[string "main.lua"]:155>
[C]: in function 'xpcall'
app.lua:38: in function <[string "app.lua"]:20>
[C]: in function 'xpcall'
[love "boot.lua"]:370: in function <[love "boot.lua"]:337>
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Port of a fix "upstream": commit b38f172ceb in template-live-editor.
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Make it more obvious that the color passed in is just for the background.
The icon will do the rest.
r/g/b keys are more consistent with App.color().
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To do this I need some support for multiple versions. And I need an
'error' mode to go with existing 'run' and 'source' modes
(`Current_app`). Most errors will automatically transition to 'source'
editor mode, but some errors aren't really actionable in the editor. For
those we'll use 'error' mode.
The app doesn't yet work with LÖVE v12. There are some unit tests failing
because of differences in font rendering.
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This time it really does work with pensieve.love
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Annoying dangers of testing in one fork and committing upstream
(where it isn't used yet).
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These are like versions in nativefs, but only support absolute paths.
I want to be thoughtful about the precise location at each call-site.
It's a little ugly that app.lua now has a dependency on file.lua. Or
source_file.lua for the source editor.
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If we're already in source editor we'll quit as before.
It's ugly that app.lua now knows about run.lua. But it's a start.
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It doesn't work on Android, and it's not much work to avoid.
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Thanks to physfs and nativefs.lua
nativefs still introduces some inconsistencies with love.filesystem with
relative paths:
* love.fs.read: reads from save dir if it exists, falls back to source dir if not
* nativefs.read: reads from save dir if it exists, falls back to source dir if not ✓
* love.fs.write: always writes to save dir
* nativefs.write: always writes to source dir (since no restrictions)
* love.fs.newFile followed by file:open('r'): reads from save dir if it exists, source dir if not
* nativefs.newFile followed by file:open('r'): always reads from working dir
* love.fs.newFile followed by file:open('w'): always writes to save dir
* nativefs.newFile followed by file:open('w'): always writes to working dir
So avoid using relative paths with App primitives.
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I was so sure my comments were clear when I wrote this a year ago. They
were shit. So, most probably, is the current iteration. Feedback
appreciated.
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The old name was confusing, as its description showed.
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We had this problem because our test fakes were out of sync with reality.
And just in the source app.
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Now we render lines one screen line at a time rather than one word at a
time.
I can't port the source side just yet; I need to fix hyperlinks first..
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Is it just my imagination, or does the app feel lighter and more fluffy?
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In the process I discovered the horrible fact that Text.x allocates a new Text.
And it gets called (just once, thank goodness) on every single frame.
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I've been misunderstanding what Text objects are. They can render a lot
of text with a given line height, word wrap, colors in various places.
And I've been creating one for every word :facepalm:
Unwinding this will take some time. This is just a first baby step for
ad hoc text objects. Turns out I don't need to convert to Text to get
something's rendered width, just the Font can do that.
Thanks to the LÖVE Discord for educating me:
https://discord.com/channels/329400828920070144/330089431379869708/1091535487333826580
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I want the words to be easy to read, and to use a consistent tense.
update and focus seem more timeless; let's make everything like those.
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scenario: open app from .love file, press ctrl+e
Before this change the source file showed up empty.
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