C++ playMusic函数代码示例

void detectKeys()
{
	unsigned int *playerBottom[3] = {&g_worldGrid[charLocation.X][charLocation.Y],&g_worldGrid[charLocation.X - 1][charLocation.Y],&g_worldGrid[charLocation.X + 1][charLocation.Y]};

	for( unsigned int w =0 ; w<3 ; ++w)
	{
		if(*playerBottom[w]== '4')
		{
			if (inventoryManagement("Red Key", 1)) {
				*playerBottom[w] = ' ';
				printMessages("You have picked up a Red Key!");
			}
			playMusic(2);
		}
		else if(*playerBottom[w] == '5')
		{
			if (inventoryManagement("Blue Key", 1)) {
				*playerBottom[w] = ' ';
				printMessages("You have picked up a Blue Key!");
			}
			playMusic(2);
		}
		else if(*playerBottom[w] == '6')
		{
			if (inventoryManagement("Green Key", 1)) {
				*playerBottom[w] = ' ';
				printMessages("You have picked up a Green Key!");				
			}
			playMusic(2);
		}
	}

}

void initGame(int stg) {
  status = IN_GAME;

  initShip();
  initShots();
  initFoes();
  initFrags();
  initBonuses();
  initBackground();

  initBarrages(stagePrm[stg][0], stagePrm[stg][1], stagePrm[stg][2]);
  initGameState(stg);
  if ( stg < STAGE_NUM ) {
    setStageBackground(stg%5+1);
    playMusic(stg%5+1);
  } else {
    if ( !insane ) {
      setStageBackground(0);
      playMusic(0);
    } else {
      setStageBackground(6);
      playMusic(6);
    }
  }
}

/*
 * Just starts a new level
 */
void startLevel() {
    pieceCount = 0x00;
    gamePaused = 0x01;

    // annimation beetween levels
    // there is two annimations to show:
    // - a simple shift of the last image to left
    // - a shift to left with a men pushing
    if (level % 4 == 0 && level != 0) {
        playMusic(2);
        pushLeftAll(displayField);
        rollNumber('l', level, 10, 1000);
        rollNumber('p', score, 10, 1000);
    } else {
        shiftLeftAll(displayField);
    }

    playMusic(0);
    delay(1900);
    playMusic(3);

    generateField();        // new field
    generatePiece();        // new piece
    addPiece();             // adds the new piece to fild
    updateDisplayField();   // updates the display field
    limit = 0x11;           // sets the checkLines limit to default

    gamePaused = 0x00;
}

int Imuse::setMusicSequence(int seqId) {
	int l, num = -1;

	if (seqId == -1)
		return _seqMusicTable[_curMusicSeq].soundId;

	if (seqId == 0)
		seqId = 2000;

	for (l = 0; _seqMusicTable[l].soundId != -1; l++) {
		if (_seqMusicTable[l].soundId == seqId) {
			num = l;
			break;
		}
	}

	assert(num != -1);

	Debug::debug(Debug::Imuse, "Imuse::setMusicSequence(): SoundId %d, filename: %s", _seqMusicTable[l].soundId, _seqMusicTable[l].filename);

	if (_curMusicSeq == num)
		return _seqMusicTable[_curMusicSeq].soundId;

	if (num) {
		playMusic(&_seqMusicTable[num], 0, true);
	} else {
		playMusic(&_stateMusicTable[_curMusicState], _curMusicState, true);
		num = 0;
	}

	_curMusicSeq = num;
	return _seqMusicTable[_curMusicSeq].soundId;
}

void lvlIntro(Game *game, Level *level) {
	
	char levelNumber[50];
	int row,col,xPos, j = 0;
	sprintf(levelNumber, "LEVEL %d", game->levelNum);
	playMusic(intro, FALSE);
	
	// Draw stars, increasing length (speeding up)
	for ( j = 0; j < 30; j++ ) {
		
		lcd_fillScreen(BLACK);
		
		for (row = level->stars.y; row < DISPLAY_HEIGHT; row += STAR_SPACING_HEIGHT) { 
			for (col = level->stars.x; col < DISPLAY_WIDTH; col++) { 
				if (xPos%STAR_SPACING_WIDTH == 0) { 
					vLine(col,row, row + j, WHITE); 
				} 
				xPos++; 
			}
		}
		xPos=0; // reset xPos
		
		lcd_putString(100, 50, (unsigned char *)levelNumber);
		drawShip(level->player.currPos.x, -3*j + INIT_SHIP_POS_Y, level->player.type);
		memcpy((char*)LCD_FRAME_BUFFER,(char*)LCD_TEMP_BUFFER, 153600); // write temp buffer to fram buffer
	}		
	
	lcd_fillScreen(WHITE);
	playMusic(RainPizz,FALSE);
	memcpy((char*)LCD_FRAME_BUFFER,(char*)LCD_TEMP_BUFFER, 153600); // write temp buffer to fram buffer
	mdelay(150);
	// Draw stars, decreasing length (slowing down)
	
	for ( j = 15; j > 0; j-- ) {
		
		lcd_fillScreen(BLACK);
		
		for (row = level->stars.y; row < DISPLAY_HEIGHT; row += STAR_SPACING_HEIGHT) { 
			for (col = level->stars.x; col < DISPLAY_WIDTH; col++) { 
				if (xPos%STAR_SPACING_WIDTH == /*(row%2)*/ 0) { 
					vLine(col,row, row + j, WHITE); 
				} 
				xPos++; 
			}
		}
		xPos=0; // reset xPos
		
		lcd_putString(100, 50, (unsigned char *)levelNumber);
		drawShip(level->player.currPos.x, level->player.currPos.y - j*j, level->player.type);
		memcpy((char*)LCD_FRAME_BUFFER,(char*)LCD_TEMP_BUFFER, 153600); // write temp buffer to fram buffer
		mdelay(100);
	}
}

void IgorEngine::PART_04() {
	if (_objectsState[106] == 1) {
		_currentPart = 730;
		playMusic(1);
		return;
	}
	if (_objectsState[107] == 1) {
		_objectsState[107] = 0;
		_currentPart = 750;
		playMusic(1);
		return;
	}
	_gameState.enableLight = 1;
	loadRoomData(PAL_Map, IMG_Map, BOX_Map, MSK_Map, TXT_Map);
	loadActionData(DAT_Map);
	_roomDataOffsets = PART_04_ROOM_DATA_OFFSETS;
	SET_EXEC_ACTION_FUNC(1, &IgorEngine::PART_04_EXEC_ACTION);
	PART_04_CLEAR_OBJECT_STATE_84(255);
	memcpy(_screenVGA, _screenLayer1, 46080);
	fadeInPalette(768);
	_currentAction.verb = kVerbWalk;
	if (_gameState.musicNum != 2) {
		playMusic(2);
	}
	_walkData[0].x = 160;
	_walkData[0].y = 133;
	_walkData[0].scaleWidth = 49;
	_walkData[0].scaleHeight = 49;
	_walkDataLastIndex = 1;
	_walkDataCurrentIndex = 1;
	enterPartLoop();
	while (_currentPart == 40) {
		handleRoomInput();
		if (compareGameTick(19, 32)) {
			handleRoomDialogue();
		}
		if (compareGameTick(4, 8)) {
			handleRoomInventoryScroll();
		}
		scrollPalette(200, 207);
		setPaletteRange(200, 207);
		if (compareGameTick(1)) {
			handleRoomLight();
		}
		scrollPalette(184, 199);
		setPaletteRange(184, 199);
		waitForTimer();
	}
	leavePartLoop();
	fadeOutPalette(624);
}

/**
* Check if music is still playing.
* If not, select the next track in the playlist and play it
*/
void SoundHandler::checkMusic() {
	if (_midiPlayer->isPlaying())
		return;

	for (int i = 0; _vm->_defltTunes[i] != -1; i++) {
		if (_vm->_defltTunes[i] == _vm->getGameStatus().song) {
			if (_vm->_defltTunes[i + 1] != -1)
				playMusic(_vm->_defltTunes[i + 1]);
			else
				playMusic(_vm->_defltTunes[0]);
			break;
		}
	}
}

void MainWindow::onTimer_timeout()
{
    if (!soundEngine.isPlayingMusic())
    {
        if (checkRepeat->isChecked())
        {
            playMusic(sCurrentMusic,dDuration);
        }
        else
        {
            sliderMusic->setValue(sliderMusic->maximum());
            labelPosition->setText(QApplication::translate("mainWindow","0:00/0:00",0));
            buttonMusic->setText(QApplication::translate("mainWindow","&Play",0));
            timer->stop();
        }
    }
    // calculate the percentage of the music played
    iTimerCount++;
    if (!sliderMusic->isSliderDown())
    {
        // we move the slider only if the user is not moving it manually
        double dPosition = (double)iTimerCount/TICK;
        sliderMusic->setValue(floor(dPosition/dDuration*sliderMusic->maximum()));
    }
}

void lvlOutro(Game *game, Level *level, Controller *userInput) {
	char title[50];
	char score[50];
	char livesLeft[50];
	char hitRatioPercent[50];
	char print = FALSE;
	float hitRatio = (float)level->hits/(float)level->numberOfFires;
	playMusic(theme2,TRUE);
	game->score *= hitRatio;
	
	
	sprintf(title, "LEVEL %d PERFORMANCE", game->levelNum);
	sprintf(score, 		"Score: 		%d", game->score);
	sprintf(livesLeft, 	"Remaining lives: %d", level->player.lives);
	sprintf(hitRatioPercent, "Hit and Miss Ratio: %.2lf%%", hitRatio*100);
		
	while(!userInput->start) {
		// wait for start button
		lcd_fillScreen(BLACK);
		lcd_putString( 50, 50, (unsigned char *)title );
		lcd_putString(50, 100, (unsigned char *)score);
		lcd_putString(50, 110, (unsigned char *)livesLeft);
		lcd_putString(50, 120, (unsigned char *)hitRatioPercent);

		if(game->seed%10 == 0) {
			print = !print;
		}
		if(print) {
			lcd_putString(50, 300, "Press START to continue...");
		}
		game->seed++;
		pollController(userInput);
		memcpy((char*)LCD_FRAME_BUFFER,(char*)LCD_TEMP_BUFFER, 153600); // write temp buffer to fram buffer
	}
}

void Imuse::setMusicState(int stateId) {
	int l, num = -1;

	if (stateId == 0)
		stateId = 1000;

	for (l = 0; _stateMusicTable[l].soundId != -1; l++) {
		if (_stateMusicTable[l].soundId == stateId) {
			num = l;
			break;
		}
	}
	assert(num != -1);

	if (gDebugLevel == DEBUG_IMUSE || gDebugLevel == DEBUG_ALL)
		printf("Imuse::setMusicState(): SoundId %d, filename: %s\n", _stateMusicTable[l].soundId, _stateMusicTable[l].filename);

	if (_curMusicState == num)
		return;

	if (!_curMusicSeq) {
		playMusic(&_stateMusicTable[num], num, false);
	}

	_curMusicState = num;
}

bool Music::loadSong(int songNumber) {
	debugC(kDebugLevelMusic, "Music: loadSong()");

	if(songNumber == 100)
		songNumber = 55;
	else if(songNumber == 70)
		songNumber = 54;

	if((songNumber > 60) || (songNumber < 1))
		return false;

	songNumber = ROOM_SONG[songNumber];

	if(songNumber == 0)
		songNumber = 12;

	if((songNumber > NUM_SONGS) || (songNumber < 1))
		return false;

	Common::String songName = Common::String(SONG_NAMES[songNumber - 1]);

	freeSong();  // free any song that is currently loaded
	stopMusic();

	if (!playMusic(songName))
		return false;

	startSong();
	return true;
}

GameStart::GameStart(){
	setType("GameStart");

	//dragonfly managers needed for this
	df::ResourceManager &resource_manager = df::ResourceManager::getInstance();

	//setup GameOversprite
	df::Sprite *p_temp_sprite = resource_manager.getSprite("gamestart");

	if (!p_temp_sprite){
		df::LogManager &log_manager = df::LogManager::getInstance();
		log_manager.writeLog("GameStart::GameStart(): Warning! Sprite '%s' not found", "gamestart");
	}
	else{
		setSprite(p_temp_sprite);
		setSpriteSlowdown(30);
		setTransparency('#');
	}

	//put in center of window
	setLocation(df::CENTER_CENTER);

	//register interest
	registerInterest(df::KEYBOARD_EVENT);

	//play start music
	p_music = df::ResourceManager::getInstance().getMusic("start music");
	playMusic();
	df::WorldManager &world_manager = df::WorldManager::getInstance();
	world_manager.setBoundary(df::Box(df::Position(), 250, 250));
}

void DosSoundMan_ns::playCharacterMusic(const char *character) {
	if (!character || locationHasOwnSoftMusic(_vm->_location._name)) {
		return;
	}

	char *name = const_cast<char*>(character);
	const char *newMusicFile = 0;
	
	if (!scumm_stricmp(name, _dinoName)) {
		newMusicFile = "dino";
	} else
	if (!scumm_stricmp(name, _donnaName)) {
		newMusicFile = "donna";
	} else
	if (!scumm_stricmp(name, _doughName)) {
		newMusicFile = "nuts";
	} else {
		warning("unknown character '%s' in DosSoundMan_ns_ns::playCharacterMusic", character);
		return;
	}

	if (!_playing || (newMusicFile && scumm_stricmp(newMusicFile, _musicFile))) {
		// avoid restarting the same piece
		setMusicFile(newMusicFile);
		playMusic();
		debugC(2, kDebugExec, "changeLocation: started character specific music (%s)", newMusicFile);
	}
}

Sound::Sound()
    : currentMusic(0)
{
    assert( soundPtr == 0);
    soundPtr = this;
    loaderThread = 0;

    //Load Sound
    audioOpen = false;
    /* Open the audio device */
    if (Mix_OpenAudio( MIX_DEFAULT_FREQUENCY, MIX_DEFAULT_FORMAT, 2, 2048) < 0) {
        fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
        return;
    } else {
        audioOpen = true;
        loaderThread = SDL_CreateThread(soundThread, this);
    }

    setMusicVolume(getConfig()->musicVolume);
    setSoundVolume(getConfig()->soundVolume);

    // for now...
    //playMusic("01 - pronobozo - lincity.ogg");
    playMusic( getConfig()->playSongName );
}

void Audio::stopSpecial() {
    if (!specialId) return;
    int tmp = musiqueId;
    musiqueId = 0;
    specialId = 0;
    playMusic(tmp);
}