* Fixup HUD for slewing
* Fix Training Message box
* Lead indicator slew
* Fix HUD Message Head
* Correctly render messages
* Fix HUD offset handling
* HUD offset never makes any sense
* Cleanup offset code
* Remove unused parameter
* Fix Talking Head in RTT mode
Follow-up to #5040. This extends the checks to most iterations over `obj_used_list` in FSO. There are a few exceptions such as `waypoint_add` and `waypoint_remove`, plus a few others. And none of the object iterations in FRED have the guard because FRED does not use the same object life cycle as FSO.
1) A comprehensive fix for the is_target_dying variable
2) Also do distance correctly for non-player target brackets by adding a check that we're dealing with the target before using the current target distance. Then also calc distance if it is not the player target.
3) Update comments and checks to be consistent
Many of these did not reflect how the variable was actually used, so update the comments.
The multilock patch did not handle `Lock_anim` in the best way, and handled `Lock_gauge` in a very bizarre way, despite the fact that they are two simple hud animations. This changes the `lock_info` struct to track the correct `time_elapsed` value for both, and changes the locking code to use the values in the correct way.
Additionally, this properly loops the lock triangles on the FS1 lock indicator. Strangely, even prior to the multilock merge it appears that the triangles wouldn't have animated more than a quarter turn.
Finally, this prevents the FS1 lock indicator from blinking, since in retail FS1 it didn't blink.
Tested with FSPort and no-mods. Fixes#2826.
This is similar to the other changes I already posted. Here the sound
instance handles are converted to their own handle type which will make
it easier to use the sound API.
This adds a new class which allows to create type safe resource handle
types. At the moment, the engine uses ints pretty much everywhere for
providing handles to resources created by the specific subsystems. Since
all ints are the same to the C/C++ typesystem it is perfectly legal to
pass a sound handle to the graphics API as a buffer handle which will
obviously cause issues.
This adds a new type called "ID" which is a wrapper class for a generic
handle but with added type safety. An instance of this class cannot be
passed to a function expecting another type of handle which provided
compile-time type safety for these APIs.
As an initial test I converted the game sound handles to this new type.
I already found a bug in the mainhall system thanks to this new type.
The mainhall used the game sound handles as sound instance handles which
probably meant that that specific code never really worked right. I
removed the code since there was no better alternative for fixing it.
Goober5000