The function previously conditionally freed a m_memblocks pointer if its
corresponding m_headers was valid. This makes me slightly worried about
the possibility that memory would be allocated, but the header would
still be marked as invalid.
I don't see how that could happen, but it's better to be safe than
sorry. SDL_free() does a guaranteed NULL pointer check (like most SDL
functions), so it's okay to pass NULL pointers to it.
Just to be sure, I'm also zeroing m_memblocks and m_headers after
freeing everything in the function.
MSVC complains about these, doesn't seem like GCC does. These can be
safely removed because they're unreachable, and they always follow a
case-switch or similar that has a default case which this code is a
duplicate of anyway. (Unless it isn't, in which case all the better to
remove it, becausee otherwise it looks misleading or confusing to casual
glances at the code.)
find_tag() would commit out-of-bounds indexing if someone made a level
file with malformed XML entity encodings in the metadata tags.
This would happen if the end of the string followed immediately after an
ampersand and hash, or if there wasn't a semicolon ending an XML entity.
Valgrind complains about these, so I've fixed it.
This fixes a bug where "12" gets properly evaluated as 12, but "148"
gets evaluated as 1408. It's because `place` gets multiplied by `radix`
again, so `retval` gets multipled by 100 instead of 10.
There's no reason to have a `place` variable, so I've removed it
entirely. This simplifies the function a little bit.
The previous person who wrote this (a girl named Misa) clearly didn't
understand the reason why you couldn't compare line[line.length()-1]
directly to a string literal. It's because the former is a char, and the
latter is a pointer to a char. Both are ints, so it compiles fine, but
it doesn't do what you want it to.
Why not just make the latter a char instead of a string literal? Well,
because you can, but also I clearly didn't think this through earlier,
so that's why I didn't do it in the first place.
But this is fixed now.
This avoids an unnecessary copy of the input std::vector, since we don't
need to modify it for anything. This cuts down on unnecessary memory
operations.
Apart from the std::string, this function no longer uses the STL.
ss_toi() is a simple function - it converts the input into an int,
taking as many digits as possible until it reaches a non-digit
character, at which point it stops. It's trivial to implement this
without the STL.
I could've used Int() here, but that would've required copying the
string to a temporary buffer to insert a null-terminator (we can't just
use a pointer-and-length data type either, the string functions don't
operate like that - one disadvantage of C strings!). Instead, I decided
to implement my own conversion to int here, because I don't think the
way we humans write our Arabic numerals is going to change anytime soon.
Also, the std::string input is now passed by const reference, instead of
making a copy - cutting down on unnecessary memory operations.
I personally like putting the asterisk with the type, because despite
the language parsing the asterisk as a part of the name, the pointer
part is clearly a part of the return type of the function. Also,
put constness here, to indicate that the input won't be modified inside
the function.
This comment indicates that the function is used by
UtilityClass::GCString(). Which is unnecessary, because the reader can
trivially search for usages of GCChar in the file itself (the 'static'
preceding the function should be a good enough hint) - and if there
aren't any, then the reader will know the function is unused, whereas if
they read the comment, they would have been under the assumption that it
wasn't used. (There might also a compiler warning about it being unused,
which would be more confusing if the comment was still there.)
Point is, comments can get outdated, so removing the comment here makes
the code more self-documenting.
This is a re-do of 942217f871 (#509), but
with a more conservative fix that only resets the player's newxp and
newyp when they respawn from a checkpoint or spawn in to the map.
Unlike the previous patch, if the player were to suddenly collide with a
conveyor or horizontally-moving platform during gameplay, their
y-position would revert back to the intended next y-position of the
previous frame. But this is the same behavior as before, I haven't ever
seen such a contrived situation come up, and this behavior is probably
more preferable for gameplay than actually going to the conveyor, so
it's fine.
I also decided to reset newxp here, and not just newyp, because while
resetting newyp seems to be enough, it's safer to also reset newxp (and
so future readers won't question why only newyp is reset but not newxp).
I tested this and it once again fixes the death loop issue from earlier,
while also still allowing for that Trench Warfare trick to be possible
(I tested it with the libTAS movie I mentioned in #606; it syncs fine).
There are no other known regressions resulting from this fix
(hopefully).
This reverts commit 942217f871.
This fix (of a regression of a fix) has a regression where immediately
flipping off of horizontally-moving platforms or conveyors will no
longer provide you with a "boost" given certain vertical pixel
alignments.
The regression that this fix fixed will be fixed another way.
Fixes#606.
This works on macOS, Wayland, and a few more esoteric platforms. X11
doesn't have a concept of DPI-awareness. Note that with this flag
SDL_GetWindowSize() isn't guaranteed to return the actual window size.
Retextured checkpoints have always been in the game, but clicking on
them in the editor would lead to them losing their retextured-ness. So,
checkpoints should be left alone if their p1 isn't either 0 or 1. Also,
they don't show up properly in the editor, so that's fixed, too.
Retextured and flipped terminals were added in 2.3, and show up properly
in-game, but don't properly show up in the editor, either. So now they
show up in the editor. Additionally, clicking on them will flip the
terminal as well, but only if its p1 is 0 or 1, just like checkpoints
now do.
This call to Makebfont() always existed, but ever since 2.3's per-level
custom assets were added, graphics.reloadresources() also calls
graphics.Makebfont(), meaning this call is unnecessary. Calling it twice
results in graphics.bfont and graphics.flipbfont having twice the number
of elements, until custom assets get mounted (or unmounted, technically).
This does the same thing as the last commit, but for No Death Mode
instead of Time Trials. Whenever you die in No Death Mode, or complete
it, all the relevant variables get copied to variables prefixed with
'ndmresult' that never get reset by script.hardreset(), and these
variables are what titlerender() use, instead of the "live" ones.
This makes it so when a Time Trial gets completed, all the relevant
variables get copied onto variables prefixed with 'timetrialresult',
which never get reset by script.hardreset(). Then titlerender() will use
those variables accordingly.
There are multiple different exit paths to the main menu. In 2.2, they
all had a bunch of copy-pasted code. In 2.3 currently, most of them use
game.quittomenu(), but there are some stragglers that still use
hand-copied code.
This is a bit of a problem, because all exit paths should consistently
have FILESYSTEM_unmountassets(), as part of the 2.3 feature of per-level
custom assets. Furthermore, most (but not all) of the paths call
script.hardreset() too, and some of the stragglers don't. So there could
be something persisting through to the title screen (like a really long
flash/shake timer) that could only persist if exiting to the title
screen through those paths.
But, actually, it seems like there's a good reason for some of those to
not call script.hardreset() - namely, dying or completing No Death Mode
and completing a Time Trial presents some information onscreen that
would get reset by script.hardreset(), so I'll fix that in a later
commit.
So what I've done for this commit is found every exit path that didn't
already use game.quittomenu(), and made them use game.quittomenu(). As
well, some of them had special handling that existed on top of them
already having a corresponding entry in game.quittomenu() (but the path
would take the special handling because it never did game.quittomenu()),
so I removed that special handling as well (e.g. exiting from a custom
level used returntomenu(Menu::levellist) when quittomenu() already had
that same returntomenu()).
The menu that exiting from the level editor returns to is now handled in
game.quittomenu() as well, where the map.custommode branch now also
checks for map.custommodeforreal. Unfortunately, it seems like entering
the level editor doesn't properly initialize map.custommode, so entering
the level editor now initializes map.custommode, too.
I've also taken the music.play(6) out of game.quittomenu(), because not
all exit paths immediately play Presenting VVVVVV, so all exit paths
that DO immediately play Presenting VVVVVV now have music.play(6)
special-cased for them, which is fine enough for me.
Here is the list of all exit paths to the menu:
- Exiting through the pause menu (without glitchrunner mode)
- Exiting through the pause menu (with glitchrunner mode)
- Completing a custom level
- Completing a Time Trial
- Dying in No Death Mode
- Completing No Death Mode
- Completing an Intermission replay
- Exiting from the level editor
- Completing the main game
Comments in general don't get verified by the compiler, but
commented-out code is even worse. Especially since this looks to be
outdated code.
As always, if we need some of this code, then we can just look back in
the Git history.
This fixes a segfault, because we would then pass compressed image data
to SDL_ConvertSurfaceFormat() in LoadImage(). I didn't test my previous
PR. Whoops.
Implicit conversion warnings happen all over the codebase, but there's
no reason to warn on all of them, and adding casts everywhere is
annoying to read and patently unnecessary.
MSVC is the only compiler that has this warning (GCC even on -Wall
-Wextra doesn't warn about implicit conversions), so disable it for
MSVC.
While compiling in release mode, GCC warns about these two potentially
being used uninitialized further down. The only way this could happen is
if the case-switches below didn't match up with a case, which would
require the game to be in an invalid state (and have invalid values for
rcol and spcol), but it's better to be safe than sorry.
The only thing we need LodePNG for is to decode a PNG that we've already
loaded into memory. We handle the filesystem part ourselves, so we don't
need LodePNG's filesystem functions; we don't encode images, and we
don't use the zlib functions. So disable all of those.
During 2.3 development, there's been a gradual shift to using SDL stdlib
functions instead of libc functions, but there are still some libc
functions (or the same libc function but from the STL) in the code.
Well, this patch replaces all the rest of them in one fell swoop.
SDL's stdlib can replace most of these, but its SDL_min() and SDL_max()
are inadequate - they aren't really functions, they're more like macros
with a nasty penchant for double-evaluation. So I just made my own
VVV_min() and VVV_max() functions and placed them in Maths.h instead,
then replaced all the previous usages of min(), max(), std::min(),
std::max(), SDL_min(), and SDL_max() with VVV_min() and VVV_max().
Additionally, there's no SDL_isxdigit(), so I just implemented my own
VVV_isxdigit().
SDL has SDL_malloc() and SDL_free(), but they have some refcounting
built in to them, so in order to use them with LodePNG, I have to
replace the malloc() and free() that LodePNG uses. Which isn't too hard,
I did it in a new file called ThirdPartyDeps.c, and LodePNG is now
compiled with the LODEPNG_NO_COMPILE_ALLOCATORS definition.
Lastly, I also refactored the awful strcpy() and strcat() usages in
PLATFORM_migrateSaveData() to use SDL_snprintf() instead. I know save
migration is getting axed in 2.4, but it still bothers me to have
something like that in the codebase otherwise.
Without further ado, here is the full list of functions that the
codebase now uses:
- SDL_strlcpy() instead of strcpy()
- SDL_strlcat() instead of strcat()
- SDL_snprintf() instead of sprintf(), strcpy(), or strcat() (see above)
- VVV_min() instead of min(), std::min(), or SDL_min()
- VVV_max() instead of max(), std::max(), or SDL_max()
- VVV_isxdigit() instead of isxdigit()
- SDL_strcmp() instead of strcmp()
- SDL_strcasecmp() instead of strcasecmp() or Win32 strcmpi()
- SDL_strstr() instead of strstr()
- SDL_strlen() instead of strlen()
- SDL_sscanf() instead of sscanf()
- SDL_getenv() instead of getenv()
- SDL_malloc() instead of malloc() (replacing in LodePNG as well)
- SDL_free() instead of free() (replacing in LodePNG as well)
This patch de-duplicates the tool drawing code a bit in the menu that
gets brought up when you press Space in the level editor, as well as
fixes several bugs related to the fact that the original author(s) of
the code decided to copy-paste everything. (It was most likely Terry,
judging by the distinct lack of whitespace between tokens in the code.)
There are two "pages" of tools that get shown when you open the tool
menu, according to your currently-selected tool.
1. On the first page, your currently-selected tool gets a brighter
outline. However, on the second page, the code to draw the outline over
your currently-selected tool is missing. So I've fixed that.
2. On the first page, the glyph indicator next to the tool icon also
gets brighter when you have that tool selected. However, on the
second page, the code that drew the brighter-colored indicator got
ran before the code that drew the normal-colored indicator, so this
was never shown. This is also fixed.
3. The glyph indicator of the gravity line tool didn't get brighter when
you had it selected, due to its special-cased copy-pasted code
drawing its brighter color before drawing its normal color. This has
also been fixed.
4. Lastly, the tool menu no longer draws the brighter-colored glyphs on
top of the normal-colored glyphs. Instead, the menu will simply draw
the brighter-colored glyphs and will not draw the normal-colored
glyphs in the first place. This is because double-drawing text like
this will look bad if the user has a custom font.png that has
translucent pixels, like I do.
All of these bugs have been fixed by paying off the technical debt of
copy-pasting code.
This variable seems to have been intended to make sure
game.savestatsandsettings() was called at the end of the frame, or make
sure that it didn't get called more than once per frame. I don't see any
frame ordering-related reason why it needs to be called specifically at
the end of the frame (the function doesn't modify any state), so it's
more plausible that it was added to make sure it didn't get called more
than one per frame.
However, upon further analysis, none of the code paths where
game.savemystats is used ever calls or sets game.savemystats more than
once, and a majority of the code directly calls
game.savestatsandsettings() anyway, so there's no reason for this
variable to exist. If we ever need to make sure it doesn't get called
more than once, and there's no way to change the code paths around to
prevent it otherwise, we can use the defer callbacks system that I added
to #535, when it gets merged.
These variables basically serve no purpose. map.customx and map.customy
are clearly never used. map.finalx and map.finaly, on the other hand,
are basically always game.roomx and game.roomy respectively if
map.finalmode is on, and if it's off, then they don't matter.
Also, there are some weird and redundant variable assignments going on
with these; most notably in map.gotoroom(), where rx/ry (local
variables) get assigned to finalx/finaly, then finalx/finaly get
assigned to game.roomx/game.roomy, then finalx/finaly get assigned to
rx/ry. If finalx/finaly made a difference, then there'd be no need to
assign finalx/finaly back to rx/ry. So it makes the code clearer to
remove these weird bits of code.
2.3's per-level assets feature also added a hotkey to reload the custom
assets of the level you're currently editing in the editor, so you
wouldn't have to re-load the level yourself. This hotkey is F9, but
however, it hasn't been documented in the hotkey list brought up by
pressing Shift, until now.
This patch cleans up unnecessary exports from header files (there were
only a few), as well as adds the static keyword to all symbols that
aren't exported and are specific to a file. This helps the linker out in
not doing any unnecessary work, speeding it up and avoiding silent
symbol conflicts (otherwise two symbols with the same name (and
type/signature in C++) would quietly resolve as okay by the linker).
Line clipping and second-frame edge-flipping have been broken since #539
was merged (d910c5118d). The cause of this
is moving the onground/onroof code around.
A proper loop order fix is going to come once #535 gets finalized and
merged, so this is a stopgap measure just to make sure people don't
report that line clipping or second-frame edge-flipping are broken in
current builds of 2.3.
There is a certain ordering of which corners you click on to place enemy
and platform boundaries, and script boxes. You must first click on the
top-left corner, then click on the bottom-right corner. The visual box
that is drawn after you've first clicked on the top-left corner clearly
shows this intended way of doing things.
However, it seems like despite the visuals, the game didn't properly
prevent you from clicking on the corners in the wrong way. If you placed
it from top-right to bottom-left, or bottom-left to top-right, then the
game would place the boxes accordingly, and they would have a weird
shape where two of its opposite sides would just be missing. But,
placing them from bottom-right to top-left is prevented accordingly.
The bug comes down to a simple use of "or", instead of the correct
"and". This isn't the first time the wrong conjunction was used in a
conditional... (8260bb2696, #136)
Since the code block that the if-statement guards is the code that will
execute if the corners placed were correct, the if-statement thus should
be written in the positive case and use a more restrictive "and",
instead of the negative case, which would use a more looser "or". There
are less cases that are correct than cases which are incorrect - in this
case, there is only 1 correct way of doing things (top-left to
bottom-right), compared to 3 incorrect ways of doing things (top-right
to bottom-left, bottom-left to top-right, bottom-right to top-left) - so
when thinking of positive cases, you should be using "and".
Or, you can always just test it. This bug has been in the game since
2.0, so it seems like no one just tested that incorrect input actually
didn't work.
Ever since 2.0, the colors of some of the Time Trial trophies in the
Secret Lab don't correspond to the crewmate of the given level. The
trophy for the Tower uses Victoria's color, and the Lab trophy uses
Vermilion's color. The Space Station 2 trophy uses Viridian's color, and
the Final Level trophy uses Vitellary's color.
This doesn't appear to be intentional, and it would be odd if it was,
since this game matches the colors everywhere else (each zone on the map
is colored with their respective crewmate in mind, for instance). Also,
the Lab trophy has the sad expression, which is Victoria's trait - it
would be weird if this was intended for Vermilion instead.
But the biggest piece of evidence that this was unintentional is the
corresponding comment for each color in Graphics::setcol(). It mislabels
yellow as cyan, cyan as yellow, blue as red, and red as blue.
To fix this, I simply have to set the correct color for each trophy in
case 25 of entityclass::createentity(). I could fix it in
Graphics::setcol() itself, but custom levels might depend on those
certain colors being the way they are, so it's a safer bet to just fix
it in the trophy creation case itself.
The diff of this might look weird. Even though all I'm doing is changing
some value assignments around, it looks like the "patience" algorithm
thinks I'm moving a whole case of the trophy switch-case around.
So... it looks like being able to switch through tilesets backwards has
been in 2.3 for a while, guess no one just uses 2.3 or the level editor
that much. It seems like it's always been broken, too.
If you were on the Space Station tileset (tileset 0), pressing Shift+F1
would keep you on the Space Station tileset instead of switching to the
Ship (tileset 4).
It looks like the problem here was mixing size_t and int together - so
the modulus operation promoted the left-hand side to size_t, which is
unsigned, so the -1 turned into SIZE_MAX, which is 18446744073709551615
on my system. You'll note that that ends in a 5, so the number is
divisible by 5, meaning taking it modulo 5 leads to 0. So the tileset
would be kept at 0.
At least unsigned integer underflow/overflow is properly defined, so
there's no UB here. Just careless type mixing going on.
The solution is to make the modulus an int instead of a size_t. This
introduces an implicit conversion, but I don't care because my compiler
doesn't warn about it, and implicit conversion warnings ought to be
disabled on MSVC anyway.
This fixes a bug where if you entered a tower before watching the
credits sequence, the credits sequence would have mismatched text and
background colors.
This bug happened because entering a tower modified the r/g/b attributes
of mapclass, and updated graphics.towerbg, without updating
graphics.titlebg too. Then gamecompleterender() uses the r/g/b
attributes of mapclass.
The solution is to put the r/g/b attributes on TowerBG instead. That
way, entering a tower will only modify the r/g/b attributes used to
render towers, and won't affect the r/g/b attributes used to render the
credits sequence.
Additionally, I also de-duplicated the case-switch that updated the
r/g/b attributes based off of the current colstate, because it got
copy-pasted twice, leading to three instances of one piece of code.
This fixes a bug where if you completed a custom level during
command-line playtesting, when returning to the title screen, the
background would be red and the text would be white.
This is because playtesting skips over the code path of pressing ACTION
to start the game and advance to the title screen, and the code path of
that ACTION press specifically initializes the title screen colors to
cyan.
This is also caused by the fact that completing a custom level doesn't
call map.nexttowercolour(), but my guess is that the intent there was
that the player would select a custom level, complete it, and return to
the title screen on the same screen with the same colors, so I decided
not to add a map.nexttowercolour() there.
Instead, I've moved the cyan color initialization to main(), so that it
is always executed no matter what, and doesn't require you to take a
specific code path to do it.
With commit 48313169b6 (PR #453),
AllyTally added a single-case patch for a regression, instead of fixing
it at its root cause.
In fact, that commit only fixes the music if Presenting VVVVVV is
playing while exiting to the menu, not if you enter a level that plays
Presenting VVVVVV - so it only fixes it going one way, and not going the
other way around; neither fixing also all the other cases this could
happen.
It doesn't, say, fix the case where you are exited to the menu
automatically after collecting the last crewmate in the level (or if the
level calls gamestate 1013 itself), which is what happens in my MIRA-VIU
TAS video at the end, and which I noted in the description of that video
( https://www.youtube.com/watch?v=OYQO4ePbYW4&t=111 ).
So, the problem here is that when musicclass::play() is called, it sees
that currentsong is the same as its input, and decides that since the
music is already playing, it shouldn't play the music again. Thus, the
music fades out, and we get silence instead of the music playing again.
But I said this was a regression. Why didn't this happen in 2.2? Well,
it's because of the fact that 2.2 sets currentsong to -1 (no music
playing at all) immediately when starting a fadeout, and not when the
fadeout completes (commit facb079b35,
PR #316). As you can imagine, this discrepancy could lead to bugs, given
that the game would think that music wasn't playing when in actuality it
was, but fixing this bug could also break code that expected this wrong
behavior. And in this case, it has.
So to properly fix the root cause of this, instead of naïvely
single-case patching out every case that comes up randomly, in
musicclass::play(), the function will now ignore if the input given is
the same as currentsong if the music is currently fading out.
This reverts commit 48313169b6, "Don't
fade music out when returning to the menu if it's Presenting VVVVVV".
This commit is being reverted because it is only a single-case patch -
that is, it fixes only a single symptom of the bug, and not its
underlying cause.
This is also another conditional where the rest of the function is
nested. Furthermore, in order to not repeat ourselves, I've also decided
to unconditionally assign currentsong to t, because if t is -1
currentsong gets assigned to -1 anyway - so it's the same thing, but
it's much easier to see and think about.
