Little endian systems stored sound as a `uint32_t`, but sent only the
lowest byte. Store only that byte, since the destination was unaligned
and was the last field in the message.
Players keep reporting errors that trace to the game rejecting invalid
data from user-made maps. In this case, asymmetric connectivity in
_Descent Vignettes_[1] level _Stalactite Volcano_ (level 15 in Descent,
level 14 in Descent 2) caused an exception when trying to render part of
the first big room.
The debug build shipped with function `check_segment_connections` to
detect some types of connectivity errors. Expose this function to
release builds, and call it for user-made maps. It already checked for
asymmetric segment links. Extend that to hotfix those links by breaking
the asymmetric connection. Log an URGENT class message when this
happens, so that users are aware that the level was modified at load.
Move the `NDEBUG` guards into `check_segment_connections` so that
non-debug builds check only for segment symmetry, but do not check for
normals and face count errors.
[1] http://www.enspiar.com/dmdb/viewMission.php?id=724
```
sha1sum vignette.hog vignette.msn
3cd659e6dd5927b41157dfb7d1dd87d90e781f01 vignette.hog
1f7d140ffab11816364040dd6da71a1568393a16 vignette.msn
stat -c '%s %Y %n' vignette.hog vignette.msn
5717889 1251643308 vignette.hog
956 1250212930 vignette.msn
```
Reported-by: MegaDescent <http://forum.dxx-rebirth.com/showthread.php?tid=970>
Revert to the user's chosen resolution, not to 0x0, which would then be
coerced to the minimum resolution. When the text says revert, it should
revert, not just pick a size.
Change the "OK" label to say "Revert to NxM" for the resolution it is
reverting to.
Tighten input validation so that a blank width or blank height produce
the correct error message, rather than being coerced to 0, then
rejecting 0 as too small.
d2x::segment has all members of d1x::segment, as well as two new members
exclusive to d2x::segment. Structure layout is such that d1x::segment
requires the same size allocation, and places anonymous pad members in
the locations that become named members in d2x::segment. Thus, reusing
d2x::segment for d1x::segment does not change the size of the structure
nor the offsets of any members used. This reuse may enable some
functions to be better shared by the dsx project.
Instead of blacklisting two specific bad N_save_pof_names values, ignore
all N_save_pof_names that would overrun the Save_pof_names array.
This allows Rebirth to load broken levels such as "Hazard Zone"[1]. In
the case of Hazard Zone, the POF count is simply missing, so the first
two characters of the first POF name were taken as a count. This led to
a massive overrun of the Save_pof_names array.
[1]:
```
sha1sum hazard.msn hazard.rdl
25abe7ba1aca91f0bd09551e65cfadeabfcb73df hazard.msn
f5e6761b674b595550b27733fd83eeb2eff5e8f8 hazard.rdl
```
`value` is generic and unclear. It is always meant to be used as an
index into the Station array, so rename it `station_idx` to show this.
Define and consistently use `station_none` to represent that no station
is assigned.
Delete stub "compiler-type_traits.h" header. Redirect all uses to the
standard <type_traits> header.
git grep -wlz 'compiler-type_traits.h' -- '*.cpp' '*.h' | xargs -0 perl -p -i <<EOF
BEGIN {
$i = 0;
}
if (($i == 1 && $_ eq "\n") || ($i < 2 && /^#include "/)) {
# First blank line or first user-include after a system-include.
# Print, then never again for this file.
print "#include <type_traits>\n";
$i = 2;
} elsif ($i == 0) {
$i = 1 if (/^#include </);
} elsif ($_ eq "#include \"compiler-type_traits.h\"\n") {
# Remove this line if found.
$_ = '';
}
# Reset state machine when moving to next file.
$i = 0 if eof;
EOF
All supported compilers have an acceptable <type_traits>. Commit
4cb3d46148 ("Move <type_traits> test to Cxx11RequiredFeature") made
<type_traits> support mandatory in August and no one has objected.
Remove the indirection and use namespace std directly for type_traits
members.
Early unification efforts missed this one because it was in gamemine.c
for Descent 1, but segment.c for Descent 2. Move it to gamemine.cpp for
both, so that it can be static for both games.
gcc-7 warns:
similar/main/mglobal.cpp:119:5: error: this use of "defined" may not be portable [-Werror=expansion-to-defined]
#if DXX_VALPTRIDX_ENABLE_FULL_TEMPLATE_INSTANTIATION
Fix this by using the long form of the definition.
Previously, valptridx used PREFIX for allow-invalid+mutable, c#PREFIX
for allow-invalid+const, v#PREFIX for require-valid+mutable, vc#PREFIX
for require-valid+const. Convert the types, factories, and all usage
sites to specify a qualifier for all four combinations:
im#PREFIX -> allow-invalid+mutable
ic#PREFIX -> allow-invalid+const
vm#PREFIX -> require-valid+mutable
vc#PREFIX -> require-valid+const
Changes to common/include/valptridx.h and common/include/fwd-valptridx.h
are manual. All other changes are generated by:
git grep -lz -e '\(obj\|seg\|clwall\|wall\|actdoor\|trg\)\(ptridx\|ptr\|idx\)\(_t\)\?\>' | xargs -0 sed -i -e 's/\<\(v\?\)\(\(obj\|seg\|clwall\|wall\|actdoor\|trg\)\(ptridx\|ptr\|idx\)\(_t\)\?\)\>/\1m\2/g'
for the 'm' prefix and:
git grep -lz -e '\(obj\|seg\|clwall\|wall\|actdoor\|trg\)\(ptridx\|ptr\|idx\)\(_t\)\?\>' | xargs -0 sed -i -e 's/\<\([cm]\(obj\|seg\|clwall\|wall\|actdoor\|trg\)\(ptridx\|ptr\|idx\)\(_t\)\?\)\>/i&/g'
for the 'i' prefix.
Past releases had a debug-only assertion that 25 was sufficient, but
then dynamically allocated enough storage for larger models as needed.
Commit 22a34809ee ("Move interpreter g3s_lrgb onto stack") added a
hard limit of 25, but did not detect attempts to exceed this. Custom
models that exceeded 25 would cause a stack buffer overwrite and likely
crash. Raise the limit to 64 and add sanity checking to refuse to
render models that exceed MAX_POINTS_PER_POLY.
Fixes: 22a34809ee ("Move interpreter g3s_lrgb onto stack")
Disable gcc's -Wformat-nonliteral for this one call since unchecked
format strings are (1) under the user's control, (2) unable to cause
problems, and (3) very difficult to fully support with the warning
enabled.
Reported-by: parkerlreed <https://github.com/dxx-rebirth/dxx-rebirth/issues/338>
For switch cases where existing comments or code flow logic obviously
intended to fall through, add a gcc-7 /*-fallthrough*/ comment to
silence warnings about this. Some cases which are less obvious are not
converted, so the code does not yet compile clean with
-Wimplicit-fallthrough.
Reported-by: parkerlreed <https://github.com/dxx-rebirth/dxx-rebirth/issues/338>
Commit 829e95b dropped a test for game_mode_hoard when computing light.
Since hoard orbs are in a union which overlaps the score in mission
mode, this caused a bug where a player in mission mode with non-zero
score would pulse light like a player carrying orbs in hoard mode.
Restore the test for hoard mode.
Fixes: 829e95b6f8 ("Separate hoard/proximity tracking")
