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The following tasks were involved when integrating the Wwise sound engine into Cube:
Cube, originally developed by Wouter van Oortmerssen, is an open-source single or multi-player first person shooter game that is readily available from the Cube web site (http://cube.sourceforge.net/). To accommodate the integration of Wwise, the following modifications were made to the version downloaded from the Cube website:
The existing sound code was rewritten to use the Wwise sound engine.
The audio content was moved into a Wwise project.
Dependencies on other libraries (SDL, SDL_image, libpng) were removed.
Extra audio (footsteps, for example) was added.
Some game config and content files were modified to accommodate the above changes.
Two kinds of game objects were registered in the sound engine:
Pointers to the baseent struct. These are the moving entities of the game world: players, monsters, and projectiles.
Dummy game objects, numbered 64-127. These are used for 3D sounds that are not attached to a moving entity (for example, items spawning).
The core of the audio integration code is located in the
<WwiseRoot>\Cube\cube_source\src folder in the following files:
Sound.cpp—includes all code that accesses the sound engine.
Sound section of Protos.h—includes the declared public functions.
The following types of sounds were involved in the integration process:
Monster Play Sounds:
Each character has associated pain, die, and footstep events. (See monstertypes[]
in monster.cpp.)
Footstep events are posted from the monsterfootstep() function, which
also sets the 'Material' Switch corresponding to the texture underneath the character
to drive the footstep Switch Container.
Items have associated pickup events. (See itemstats[] in
entities.cpp)
Magic Sounds:
Each type of magic has an associated event. (See guns[] in
weapon.cpp)
Projectiles have a splashing event (S_FEXPLODE, S_RLHIT).
Throwing ice gems while quad damage is enabled also posts the event S_ITEMPUP.
Network Sounds:
Certain events also need to go to the server for network play; this is handled by
snd_clientevent().
Miscellaneous Sounds:
To find all other sound events occurring during game play, search for
snd_event() calls in the code base.
The following new sound-related commands were created to help you manage the sounds. These
can be used in the .cfg script files:
akevent <string>: post an event (by name) on the local player game object (player1).
soundvol <int>: to set the sound volume (0-255).
musicvol <int>: to set the music volume (0-255).
voicevol <int>: to set the voice volume (0-255).
texturematerial <int> <string1> <string2>: this is essentially the same command as 'texture', but with an added parameter which is the associated material for footsteps.
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