/*
==================
Sound::Init
Initiates the file handles, sources and buffers.
==================
*/
bool Sound::Init(string file) {
Clear();
if (pbMethod == PLAYBACK_STREAM) {
if (!(oggFile = fopen(file.c_str(), "rb"))) {
return false;
}
/* Attempt to read from the file as an Ogg-file */
oggStream = new OggVorbis_File;
int result;
if ((result = ov_open(oggFile, oggStream, NULL, 0)) < 0) {
fclose(oggFile);
delete oggStream;
oggStream = NULL;
return false;
}
/* Read format data from the file */
vorbisInfo = ov_info(oggStream, -1);
if (vorbisInfo->channels == 1) {
audioData.format = AL_FORMAT_MONO16;
} else {
audioData.format = AL_FORMAT_STEREO16;
}
audioData.frequency = vorbisInfo->rate;
} else if (pbMethod == PLAYBACK_CACHE) {
cacheBuffer = AudioManager::GetSingleton()->GetCacheBytes(file);
PimAssert(cacheBuffer != NULL, "Failed to retrieve cache buffer");
audioData = AudioManager::GetSingleton()->GetCacheData(file);
PimAssert(audioData.format != 0, "Failed to retrieve cache format");
PimAssert(audioData.frequency != 0, "Failed to retrieve cache frequency");
} else {
PimAssert(0, "Init called on PLAYBACK_UNDEFINED Sound object");
return false;
}
alGenBuffers(2, buffers);
alGenSources(1, &source);
alSource3f(source, AL_POSITION, 0.f, 0.f, 0.f);
alSource3f(source, AL_VELOCITY, 0.f, 0.f, 0.f);
alSource3f(source, AL_DIRECTION, 0.f, 0.f, 0.f);
alSourcef (source, AL_ROLLOFF_FACTOR, 0.f );
alSourcei (source, AL_SOURCE_RELATIVE, AL_TRUE );
return true;
}
/*
==================
Sound::Sound
==================
*/
Sound::Sound(string file, PlaybackMethod method) {
oggFile = NULL;
oggStream = NULL;
vorbisInfo = NULL;
bytePos = 0;
cacheBuffer = NULL;
buffers[0] = 0;
buffers[1] = 0;
source = 0;
audioData.format = 0;
audioData.frequency = 0;
pbMethod = PLAYBACK_UNDEFINED;
requiresInitialFill = true;
loop = false;
deleteWhenDone = true;
AudioManager::GetSingleton()->AddSound(this);
PimAssert(method != PLAYBACK_UNDEFINED, "Error: Must provide valid playback method!");
if (method == PLAYBACK_CACHE) {
Cache(file);
} else if (method == PLAYBACK_STREAM) {
Stream(file);
}
}
/*
=====================
Layer::Layer
=====================
*/
void Layer::AddLight(GameNode *node, LightDef *lDef) {
PimAssert(node->parent != NULL, "ERROR: Orphan lights are not allowed");
if (lightSys) {
lightSys->AddLight(node, lDef);
}
}
/*
=====================
Layer::Layer
The GameNode must have a ShadowShape prepared before it's added.
use: GameNode::SetShadowShape(Vec2[], int)
=====================
*/
void Layer::AddShadowCaster(GameNode *caster) {
if (lightSys) {
PimAssert(caster->GetShadowShape() != NULL,
"Error: Shadow Caster must have a defined shadow shape");
lightSys->casters.push_back(caster);
}
}
/*
==================
Sound::FillBuffer
Fills the buffer by streaming from an appropriate buffer.
If PLAYBACK_CACHE:
The vector<char> *cacheBuffer is used to fill the buffer.
if PLAYBACK_STREAM:
The OggVorbis_File *oggStream is used to fill the buffer.
==================
*/
bool Sound::FillBuffer(ALuint buffer) {
char data[BUFFER_SIZE];
int size = 0;
int section = 0;
long result = 0;
while (size < BUFFER_SIZE) {
if (pbMethod == PLAYBACK_STREAM) {
result = ov_read(oggStream, data+size, BUFFER_SIZE-size, 0, 2, 1, §ion);
} else if (pbMethod == PLAYBACK_CACHE) {
/* Calculate how much we can copy from the cache */
long remainding = cacheBuffer->size() - bytePos;
result = min<long>(remainding, BUFFER_SIZE-size);
/* Perform the copy */
if (result > 0) {
copy(cacheBuffer->begin()+bytePos,
cacheBuffer->begin()+bytePos+result,
data+size);
bytePos += result;
}
} else {
PimAssert(false, "FillBuffer on PLAYBACK_UNDEFINED sound-object");
}
if (result > 0) {
size += result;
} else if (result < 0) {
/* An error occurred */
if (pbMethod == PLAYBACK_STREAM) {
printf("OggVorbis error: %s\n", OggErrorString((int)result).c_str());
}
return false;
} else {
/* We've reached the end of the buffer */
if (loop) {
if (pbMethod == PLAYBACK_STREAM) {
ov_pcm_seek(oggStream, 0);
} else {
bytePos = 0;
}
} else {
/* We're not looping, and the end has beed reached */
if (!size) {
return false;
} else {
/* Fill the buffer with what we've got */
break;
}
}
}
}
/* Fill the OpenAL buffer with the retrieved data */
alBufferData(buffer, audioData.format, data, size, (int)audioData.frequency);
return true;
}
/*
=====================
GameControl::SetScene
=====================
*/
void GameControl::SetScene(Scene *ns) {
PimAssert(ns != NULL, "Error: Cannot set scene: NULL.");
if (newScene) {
delete newScene;
}
newScene = ns;
}
/*
=====================
GameNode::AddChild
=====================
*/
void GameNode::AddChild(GameNode *ch) {
PimAssert(!ch->GetParent(), "Node already has a parent");
Layer *layer = dynamic_cast<Layer*>(ch);
if (layer) {
layer->LoadResources();
}
ch->parent = this;
children.push_back(ch);
ch->OnParentChange(this);
dirtyZOrder = true;
}
/*
==================
Sound::InitialFill
When first starting playing, the buffers needs to be filled.
==================
*/
bool Sound::InitialFill() {
PimAssert(requiresInitialFill, "Internal sound error");
if (!FillBuffer(buffers[0])) {
return false;
}
if (!FillBuffer(buffers[1])) {
return false;
}
alSourceQueueBuffers(source, 2, buffers);
requiresInitialFill = false;
return true;
}
/*
=====================
GameControl::GameControl
=====================
*/
GameControl::GameControl() {
PimAssert(singleton == NULL, "Only one GameControl instance can exist at a time.");
singleton = this;
scene = NULL;
newScene = NULL;
paused = false;
pauseLayer = NULL;
maxDelta = 0.f;
sleepNextFrame = false;
sleepTime = 0.f;
#ifdef WIN32 /* Windows specific initialization */
ticks = clock();
// Get the module path
char path[260] = { '\0' };
GetModuleFileName(NULL, path, 260);
int lastSlash = 0;
for (int i=0; i<260; i++) {
if (path[i] == '\\' || path[i] == '/') {
lastSlash = i;
}
}
for (int i=lastSlash+1; i<260; i++) {
path[i] = '\0';
}
modulePath = path;
#elif defined __APPLE__ /* OSX specific initialization */
struct timeval time;
gettimeofday(&time, NULL);
ticks = Tick(time.tv_sec) + Tick(time.tv_usec / 1000000.0);
modulePath = ".";
#endif
printf("Working directory:\n%s\n\n", modulePath.c_str());
}