Rebirth built with OpenGL has a hard dependency on the GL utility
library, but did not have a configure time test to report this. Add
one.
Reported-by: shoober420 <https://github.com/dxx-rebirth/dxx-rebirth/issues/468>
When joystick support is not present, `event_joystick_get_button` is not
declared in joy.h.
Fixes: c24864b180 ("make menus controllable with joystick")
The same logic is used in two places. Move it to a helper function, and
switch from repeated use of snprintf for one character at a time to
instead use fill_n.
Check if the cockpit window textures are still valid when reusing the
previous cockpit data in cockpit_decode_alpha.
This fixes a crash when leaving the graphics options menu while in
the game with cockpit visible, since that calls
ogl_smash_texture_list_internal which invalidates all textures.
This is necessarily incomplete since it can only check ranges that have
a compile-time static size. However, it catches some simple mistakes,
and imposes no runtime cost, so it is still useful.
For historical reasons, the kcm_* arrays are smaller than the player's
configuration settings. Move the kcm_ arrays to be the first range
passed to zip, so that traversal does not exceed the array.
Fixes: d959eeca8f ("Use zip in kconfig to allow use of range-based for")
When AddressSanitizer is enabled, gcc-10 will warn that strncpy will
truncate the message. This truncation is valid, since it only loses the
terminating null byte, and the next line explicitly supplies a
terminating null. Switch to memcpy to eliminate the warning and produce
simpler code.
Define separate enum values for rotation data in both the high bits,
where it is usually kept, and the low bits, where it is sometimes used
for math or comparisons.
Define an enum value to represent the composite of the index and the
rotation, since the composite is not suitable for use as an array
subscript. Add helper functions to extract the component pieces.
tmap1 cannot be rotated, so checking for it inside
convert_to_d1_tmap_num is wrong. tmap2 can be rotated, and checking for
it outside convert_to_d1_tmap_num is cleaner.
