On intermittent stop of OpenAL playback deleting the buffers without
unqueuing the current buffers is an invalid operation, causing invalid
audio states on alGetSource().
Audio can be played with 1 call, audio_beginVorbisStream which
encapsulates the initialisation of the renderer and release on finish.
OpenAL is quoted to have a limitation of around 32 sources. Audio
renderers hence acquire a source slot on playback and immediately release
on finish. This ensures that sources are held optimally and minimises the
possibility of saturating the available sources.
Renderers hold an index to the source list, which the index reveals the
source ID for their use.
Remove the use of beginAttack and endAttack in the entity update loop and
delegate all changes to entity through state switching. This
consolidates the flow of data in the loop more consistently by going
through one master function. This also minimises the number of
entry-points to functions that will update an entity states- for ease of
comprehension.
Notion of pivot point now for rotating, i.e. the anchor point at which
rotations are applied. Rotating the reticule is done by using inverse
trigonometry, namely atan2f.
Mobs battle in real-time with the hero when in range. Start encapsulating
logic into entityStateSwitch() to organise entity properties changing
between different states.
Introduce basic concept of memory management in MemoryArena. Begin passing
around a memory object to track memory usage and eventually delegate
memory allocations through. Remove the old memory tracker in the debug
object and incorporate into engine primarily.
Add a debug console for logging information and events to the screen in
a console-like fashion. Debug is now initialised after the game, this is
so that you can pass the game's memory arena and font file to the debug
services. Debug services now properly initialise debug element positions
from this information and not through the update routine.
The main debug drawing elements have been moved to debug.c to avoid
cluttering up the main game file. The downside is that thus far the debug
values only track values post-update.
We have a notion of begin attack and end attack to allow code to drive the
animation system and apply effects after an attack animation has
completed.
Mixing and matching V2 int and float types in the code creates too much
necessary work when an integer implementation has to interact with float
implementation. Let V2i create the cast for us and use floats for all
vector operations since they are mostly mathematic.
Begin to add notion of a hitbox entity size and the rendering size.
Dynamic entities such as players will have animations that should exceed
the size of the actual player, we should be able to render it at the
desired size even if larger than the actual size.
Collision still occurs on the entity size (i.e. hitbox). Remove the notion
of updating animation in the renderer, we update in WorldTraveller,
removing any concept of passing a "deltatime" to the renderer. The
renderer's purpose is to draw not parse animation logic.
Some functions which should not be exposed in the API have been switched
to INTERNAL scope. We have a notion of an empty texture in World Traveller
that we can pass in situations where we just want to render a solid
colour with no associated texture.
The alternative to this was creating a separate shader for rendering
primitives but would require at some point to expose the AssetManager to
the renderer or the user on behalf has to manually switch shaders before
rendering (non-intuitive).
Separate notion of rendering a static string, i.e. for debug display that
is absolutely positioned, and rendering of a regular string that moves
with the game camera.
Rendering using a non-default quad specifies normalised coordinates
relative to the frame buffer size. Hence each render of these frames
should origin from (0,0) any other value is invalid.
OpenGL automatically clips objects outside of the view space but we were
still using up a lot of useless glDraw calls which impacts performance.
This change is temporary and will change when we get to scrolling the
world.
