Change piggy_register_sound to take the sound offset as a parameter,
rather than assuming the caller will set SoundOffset accordingly.
Remove a spurious sound reset in piggy_register_bitmap. Based on the
duplicated comment, this was probably incorrectly copied from
piggy_register_sound, where it made sense, into piggy_register_bitmap,
where it does not.
- Document the logic for resetting the values to default
- For D1: load the untrusted values directly into an array, instead of
loading them to temporaries and then copying the temporaries to the
array.
- For D2: optimize the read by loading 22 bytes in a single step,
instead of loading single bytes 22 times.
The preceding commit breaks OpenGLES + SDL1 support, by referencing
SDL_GL_* constants that are new in SDL2. Add a preprocessor guard to
skip over the new constants when using SDL1.
Fixes: c90ac3e611 ("Fix OpenGL ES build on SDL2.")
Descent 2: Vertigo level 10 has invalid data in its control center
triggers. Sanitize invalid data at load to avoid problems in
memory-poisoning builds.
`oldsegnum` is `const`, so the address computed from it cannot change.
Lift the computation of `auto &children` out of the loop.
Reduce the scope of `biggest_val`, since it does not need to outlive the
loop.
Introduce a helper to obtain both the magnitude of a vector and the
corresponding normalized vector. Use it to capture both values as const
when possible.
gcc-11.3.0 issues a -Wmaybe-uninitialized warning for `exit_side`.
Reorder the code to eliminate this warning. Also, fix a potential
out-of-bounds read if `matt_find_connect_side` returned `side_none`.
Before, this would lead to a read of `Side_opposite[side_none]` before
the test that `entry_side` is not `side_none`. Now, if
`matt_find_connect_side` returns `side_none`, the read of
`Side_opposite` is skipped and logic goes directly to finding a proper
exit side.
gcc-11.3.0 with -Og may issue a -Wmaybe-uninitialized warning for `w1`
because it fails to prove that every path sets the variable. Reorder
the logic to use a local lambda to ensure that every path assigns a
value.
