Apaprently the alpha blend behavior has been broken for a long time and
alpha blending was always enabled. I changed the default lua opacity
type to match this behavior so that older scripts don't get broken by
this.
Choose that if a system is too slow to compose & render apngs fast
enough, play the anim until the last frame anyway, potentially messing
up time sync between frames, but at least don't have looped anims
stuttering as they skip back to the 1st frame from some non-end frame.
Most modern-ish systems won't see this issue unless there's lots of
apngs playing at the same time...
Main use case is headanis where only one is played at a time and
caching the frames merely increases memory use & fragmentation, leading
to malloc errors with heavy apng use
With png & apngs sharing the same filename these warnings could fire
quite a bit, and the lack of an anim playing should be very obvious to
the modder anyway.
Use unique_ptr for safer pointer management
Simplify frame delay calcs when looping
Ensure animated cursor times don't lose precision
Switch Error to an Assertion
Fix LUA documentation formatting
Handle total_time directly requested from bm_load_animation
Make generic_anims request total_time directly
Move png-vs-apng check to apng class
Remove redundancy in apng exception messages
Update comments
Fix silly issue preventing getFrame() from working
Remove infinite loop when calculating frame num
Convert more animations to use new frame calc function
i.e. apngs (pre)loaded into bmpman slots
handles apng variable frame delays
Includes new lua function (getFrames) to find the current frame for
apngs. Also uses new function to correctly display apngs for mission
loading animations, ship thrusters & engine glows.
includes:
full-colour & hud-colour headanis
cbanims & intelanims
mainhall animations (including playing in reverse)
Notably does not support ship/weapon select anims as they need
keyframes and there isn't anywhere to specify them in the apng format
As headani's (both ANI & EFF) are streamed there's no need to have
the anim data in bmpman, the streaming code does that with only two
slots, rather than one slot per ani frame
Also fix a "leak" in the streaming code use of bmpman slots. i.e. each
time a message was played another slot would be used & not released
- replaces all arrays with SCP_vectors
- replaces all c-strings with SCP_strings
- depreciates +Misc Anim Handles: and +Misc Anim Flags: because they are just cruft
-- +Misc Anim Handles: has not been hooked up for years
-- +Misc Anim Flags: are dealt with automatically
make sure init functions init all struct fields
fix keyframes for weird FS1 anims
remove "dodgy frame skipping code" since frames should be skipped in certain circumstances
asarium