Clang's UBSan reports this as undefined behavior. I think that the reason
is as follows: C99 6.5.3.2#1 (Constraints) says:
The operand of the unary & operator shall be either a function designator, the
result of a [] or unary * operator, or an lvalue that designates an object that
is not a bit-field and is not declared with the register storage-class specifier.
But in case of an expression like "&array[-1]", the operand ("array[-1]") does
not designate a valid object.
Moral: check first -- assure that an expression is valid for a particular
operation before carrying it out. Keep in mind that otherwise, the compiler
is absolutely free to optimize out the *check*.
git-svn-id: https://svn.eduke32.com/eduke32@4014 1a8010ca-5511-0410-912e-c29ae57300e0
Again, in case a bunch is discarded. The tags would appear as really tagging
the walls instead of being "hidden".
git-svn-id: https://svn.eduke32.com/eduke32@4012 1a8010ca-5511-0410-912e-c29ae57300e0
That is, if a bunch is discarded when copying a sector to the clipboard.
(This happens if not all sectors that are part of the bunch are copied.)
git-svn-id: https://svn.eduke32.com/eduke32@4011 1a8010ca-5511-0410-912e-c29ae57300e0
Don't touch TerminX's r_usetileshades==1 or it being the default.
git-svn-id: https://svn.eduke32.com/eduke32@4010 1a8010ca-5511-0410-912e-c29ae57300e0
- For setting 1, don't draw them for red walls whose sector floors have equal
height.
- Make setting 1 the default, because I consider drawing them for such walls
(and white walls) noise (as opposed to information). The "verbose" setting 2
is still available.
git-svn-id: https://svn.eduke32.com/eduke32@4007 1a8010ca-5511-0410-912e-c29ae57300e0
DONT_BUILD, because there have been no significant changes of the non-Lua build.
git-svn-id: https://svn.eduke32.com/eduke32@4006 1a8010ca-5511-0410-912e-c29ae57300e0
In foreachmap.lua, make init() be able to return a start index for cmdline args,
for the case where the run worker script wants to handle options, for example.
git-svn-id: https://svn.eduke32.com/eduke32@4005 1a8010ca-5511-0410-912e-c29ae57300e0
- libs and headers are expected in platform/Windows/* (not there yet)
- prefix Lua #includes with luajit-2.0/
- build bytecode objects with absolute path name (used for debug info)
git-svn-id: https://svn.eduke32.com/eduke32@4000 1a8010ca-5511-0410-912e-c29ae57300e0
- Use the proper tile sequence when multiple pskies are present in a map.
However, there's still only *one* psky chosen at map load time.
- Handle three horizfrac cases:
* 0, psky always at same level wrt screen
* 65536, psky horiz follows camera horiz (e.g. E4L9)
* otherwise, fall back to default hard-coded parallax implemented as an
angle fraction
git-svn-id: https://svn.eduke32.com/eduke32@3977 1a8010ca-5511-0410-912e-c29ae57300e0
- Rename sky_t members: yscale -> horizfrac, bits -> lognumtiles.
- Add default sky (8 tiles, horizfrac=32768 (i.e. 1/2 the scene horiz), offsets
all zero) and CLOUDYOCEAN sky (8 tiles, horizfrac=65536, offsets all zero)
to multipsky[].
- Get rid of "psky_t g_psky", merely maintaining a g_pskyidx instead. Set it up
at map load time so as to keep the behavior of the legacy per-map psky:
the last sector index with a matching psky ceiling wins.
- In mapstate_t, save g_pskyidx too, not (former) pskybits and pskyoffs[].
- Make on-map-load global psky setup consistent for the game and editor by
factoring it out into common.c: G_SetupGlobalPsky().
- Remove a couple of useless initializations, add some static assertions.
This commit is more likely to introduce subtle differences in behavior.
Specifically, getpsky() now always returns the default sky properties instead of
the global sky ones (but with all-zero offsets) when no match for a suiting
multi-psky is found. This is only likely to affect the yscale/horizfrac of
non-multi-pskies when a global non-default multi-psky has been set up.
Bump BYTEVERSION again.
git-svn-id: https://svn.eduke32.com/eduke32@3976 1a8010ca-5511-0410-912e-c29ae57300e0
- Consolidate psky* arrays into a "typedef struct psky_t" "g_psky" and
"multipsky[]".
- Factor out getting parallaxed sky properties into getpsky().
- Condense initial multi-psky setup by memcpy'ing from multipsky[].
- New function: MultiPsky_TileToIdx().
- Add new define PSKYOFF_MAX and related consistency-checking assertions.
- Lower MAXPSKYTILES to 8 to reflect current usage (was 256).
- Game: make multi-pskies consider dynamically-remapped MOONSKY1, BIGORBIT1
and LA. (Not very useful as the editor will still only act for the static
values -- 80, 84 and 89, respectively.)
An attempt has been made to preserve behavior even in strange cases, so this
commit is unlikely to introduce regressions. Because of point 6, BYTEVERSION
had to be bumped.
git-svn-id: https://svn.eduke32.com/eduke32@3975 1a8010ca-5511-0410-912e-c29ae57300e0
- Allow xoffset and yoffset to modified independently of a tile definition, much like texhitscan and nofullbright.
(Both still default to zero when a tile is specified, to keep current behavior, and because it makes sense.)
- Add actual detection of the "nofullbright" keyword, which appears to have been overlooked in r3230.
- Internal: Eliminate the need for one int32_t by condensing two variables into "flags".
git-svn-id: https://svn.eduke32.com/eduke32@3973 1a8010ca-5511-0410-912e-c29ae57300e0
The old extension is an artifact from when I was thought that extensions
should label whether a Lunatic module is to be used in internal/external
contexts.
Also, change test.lua slightly and commit a little updated documentation.
git-svn-id: https://svn.eduke32.com/eduke32@3969 1a8010ca-5511-0410-912e-c29ae57300e0
Its members are already laid out on the natural alignment boundaries.
Compilation tested with {32-bit, 64-bit} x {Lunatic, non-Lua} builds.
git-svn-id: https://svn.eduke32.com/eduke32@3968 1a8010ca-5511-0410-912e-c29ae57300e0
It didn't turn out that useful and was giving a warning with one of the
preceding changes.
git-svn-id: https://svn.eduke32.com/eduke32@3963 1a8010ca-5511-0410-912e-c29ae57300e0
Also, very slightly tweak a factor toward a "brighter" (farther visible)
scene overall to account for the "circular" nature of the fragment distance
(as opposed to an "ortho" distance in Build).
git-svn-id: https://svn.eduke32.com/eduke32@3962 1a8010ca-5511-0410-912e-c29ae57300e0
