This maintains the type information which can be used for enforce
const-correctness and also for implementing more advanced ways of
handling the type information.
Nobody ever thought to add a reset-post-effects SEXP to complement set-post-effects, so this remedies that. Also, a few minor edits were made to the scripting documentation.
This adds a playback property for making the movie loop to the start
when the end is reached. The way this is done is by simply keeping the
decoder running even if the end of the movie is reached. Then the movie
is reset to the beginning and decoding continues. The player detects
this reset by examining the frame times which keeps the playback
constant.
This also includes support for this in the movie scripting API.
This adds a mission file option for ships which allows specifying a
different string which should be used for displaying the name of the
ship to the user. This name will not be used in SEXPs or other ship
lookup functions so it can be freely translated and two ships can also
have the same display name.
The new feature can be used by adding $Display name: <string> after $Name
for a ship in a mission file. I think I added proper support for FRED
(and qtFRED) so that this new value is properly saved but it would be
great if someone could test that.
This implements one of the features requested in #1730.
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 an API for the scripting system which allows it to load and
display movie files using the standard movie player code which includes
multi-threaded frame decoding.
The bounds check was not correct for 1-based indices. I moved the
Lua->C++ index conversion before the bounds check so that it makes
more sense.
Also, atoi isn't a reliable way for converting a string to an integer.
Ideally it wouldn't be an optional argument at all, but that would break backwards-compatibility, so instead it'll just return an invalid ship handle instead of calling ship_create() with a class of -1. In addition, the Assert from ship_create() meant to guard against invalid ship_type values is now an Assertion that actually says what the invalid value of ship_type was, to make future debugging easier.
Lua's Ship.TargetSubsystem VIRTVAR, when set, would write to an attribute of the Ships[] array based on an objnum instead of a ship instance index. Since MAX_OBJECTS is drastically higher than MAX_SHIPS, then depending on how many objects happen to be in the mission, an out-of-bounds array access can be easily generated. This commit makes sure to use the objnum instead as an index to the Objects[] array, and then retrieve the ship instance from it.
This converts the previous int handles to a strongly-typed wrapper
handle which will make the API more self-documenting and will ensure
that wrongly used handles are detected at compile time.
I already found a few mistakes with these changes which I also fixed
here.
The current scripting hook is pretty simple and straight forward but it
makes a couple of scripting applications harder to implement than
needed.
For example, a lot of scripts need to do some work every frame
for all or some objects. The script needs to manage an internal list of
all the objects that are affected by that list which includes removing
invalid objects to conserve resources. This effectively mirrors what the
engine already does and adds unnecessary overhead.
In these changes I added a generic event system which can be used by any
part of the code for providing callbacks when a specific event occurs.
As an example, I added hooks for the pre- and post-move events to the
object class which are called before and after physics are applied to an
object.
I integrated that feature into the scripting system so now a script can
simply register a function as a callback which will be called whenever
the target event is executed.
This adds a scripting API which can be used for adding and removing
background from a mission similarly to the existing SEXPs but with full
support for floating point numbers.
This was requested by Axem on Discord.
I also fixed a few issues where the internal char array was used as a
mutable string which changed the string after it was parsed which is not
good(TM).
This also replaces all user-facing occurences of usages of name to use
the new function so that the correct, possibly translated, name is displayed
to the user.
This changes how the bitmap slots are managed by the bmpman system.
Instead of allocating a fixed-size array when the game starts this will
manage multiple "blocks" of bitmap slots. When the engine runs out of
slots in the already allocated blocks it simply creates a new block and
allocates the new slot in that.
This removed the hard limit on how many bitmaps can be loaded at the
same time and should fix issues encountered by mods which use a lot of
bitmap slots (I'm looking at you Spoon).
This implements the idea described in #1503.
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.
The current particle system uses dynamic allocation of particle
instances for keeping track of particle instances. This adds unnecessary
overhead in case the code does not need a handle to this particle which
is the case in pretty much all instances.
The new non-persistent particles are stored in a standard vector without
dynamic allocation which should make the processing steps using this
vector much faster and allow better scalability in case more particles
are used by a mission.
Since atoi return 0 on error the code tries to access the waypoint list
with index -1 which causes an assert in the lookup code. This fixes that
by using the error detection capabilities of strtol.
The previous version used NanoVG which caused quite a serious FPS drop.
This adds a buffer batching class which groups line drawing operations
together and submits them to the GPU with a single draw call.
This add a system for adding generic instances of the DynamicSEXP class
to the SEXP system. The only implementation at the moment is the LuaSEXP
which is used by the mn.addSEXP lua API to allow Lua to add new SEXPs.
Since this requires that FRED also runs lua scripts I added a mod table
option to enable scripting in FRED. Since the current scripts are not
built with FRED in mind it would likely break all these scripts if FRED
would be opened with normal scripting enabled.
This fixes#1320.
asarium