The index and the value were transposed, and since both were integer
types, the type system was unable to warn that the new code was
incorrect. Swap the variables to bind as intended.
Reported-by: Donkyhotay <https://github.com/dxx-rebirth/dxx-rebirth/issues/544>
Fixes: de4efc4f46 ("Qualify more uses of shared_segment members")
Support for ORTHO_VIEWS has been broken since commit
db514a5ded in December 2004.
`git blame HEAD -L872,+4 -- similar/editor/meddraw.cpp`:
```
db514a5ded main/editor/meddraw.c (Bradley Bell 2004-12-19 13:54:27 +0000 872) }
db514a5ded main/editor/meddraw.c (Bradley Bell 2004-12-19 13:54:27 +0000 873) } else
db514a5ded main/editor/meddraw.c (Bradley Bell 2004-12-19 13:54:27 +0000 874) #if ORTHO_VIEWS
db514a5ded main/editor/meddraw.c (Bradley Bell 2004-12-19 13:54:27 +0000 875) else if ( screen_canvas == TopViewBox->canvas )
```
When ORTHO_VIEWS is true, this code expands to `} else else if (...)`; a
double-else is not legal, so the code cannot have been compiled with
ORTHO_VIEWS enabled. All 4 of the relevant lines date to db514a5ded,
which itself is an import of files from the D1X editor.
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.
