music.c

游戏随机创建迷宫,并给用户提供交互,自我感觉不错,只是有些函数过于冗长,随机生成算法过于累坠,不过是一五官俱全的游戏,(mazeMain.c是主要文件,编译时请将Compiler的Model改为Hug

/* 文件名 : mazeMain.c
 * 描述   : 超级迷宫 (Super Maze) 插曲模块
 * 作者   : 文曦畅 Wen Xichang   2004-11-10
 */

#define C 	523
#define C_	554
#define D	587
#define D_	622
#define E	659
#define F	698			/* Middle */
#define F_	740
#define G	784
#define G_	831
#define A	880
#define A_	932
#define B	988

#define C0 	262
#define C0_	277
#define D0	294
#define D0_	311
#define E0	330
#define F0	349			/* Low */
#define F0_	370
#define G0	392
#define G0_	415
#define A0	440
#define A0_	466
#define B0	497

#define C1 	1047
#define C1_	1109
#define D1	1175
#define D1_	1245
#define E1	1319

#define G1	1568
#define G1_	1661
#define A1	1760
#define A1_	1865
#define B1	1976

#define P8_1	1			/* Length */
#define P4_1	2
#define P2_1	4
#define P1	8
#define P2	16
#define P3	24
#define P4	32


struct Note{
	int s;		/* 声音频率 */
	int len;	/* 长度 */
}musicNotes[4][110] = {{{A0,P4_1},{B0,P4_1},{C,P2_1},{C,P2_1},{C,P4_1},{B0,P4_1},{C,P4_1},{D,P4_1},{E,P2_1},{E,P2_1},
		   {E,P4_1},{D_,P4_1},{E,P4_1},{F,P4_1},{G,P2_1},{G,P2_1},{G,P4_1},{E,P4_1},{G,P4_1},{C1,P4_1},
		   {G,12},{E,P2_1},{F,P2_1},{F,P4_1},{E,P4_1},{D,P2_1},{F,P2_1},{E,P2_1},{E,P4_1},{D,P4_1},
		   {C,P2_1},  {E,P2_1},{D,P2_1},{A0,P2_1},{B0,P2_1},{C,P2_1},{D,12},{A0,P4_1},{B0,P4_1},{C,P2_1},
		   {C,P2_1},{C,P4_1},{B0,P4_1},{C,P4_1},{D,P4_1},{E,P2_1},{E,P2_1},{E,P4_1},{D_,P4_1},{E,P4_1},
		   {F,P4_1},{G,P2_1},{G,P2_1},{G,P4_1},{E,P4_1},{G,P4_1},{C1,P4_1},{G,12},{C,P2_1},{A,P2_1},
		   {G,P2_1},{F,P2_1},{E,P2_1},{D,P2_1},{C,P2_1},{B0,P2_1},{C,P2_1},{D,P2_1},{E,P4_1},{F,P4_1},
		   {E,P2_1},{D,P2_1},{C,12},{D,P4_1},{E,P4_1},{F,P2_1},{F,P2_1},{F,P2_1},{F,P2_1},{F,P4_1},
		   {E,P4_1},{F,P1},{F_,P2_1},{G,P2_1},{G,P2_1},{G,P4_1},{F,P4_1},{E,P4_1},{F,P4_1},{G,P2},
		   {A,P2_1},{A,P2_1},{C1,6},{A,P4_1},{G,P2_1}, {G,P2_1},{G,P4_1},{F,P4_1},{E,P2_1},{F,P2_1},
		   {F,P2_1},{B0,P2_1},{D,P2_1},{C,P2_1},{C,P2_1},{C,P2_1}},

                  {{C,P1},{C,P2_1},{D,P2_1},{E,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{E,P2},
                   {G,P1},{F,P2_1},{E,P2_1},{D,P2},{F,P1},{E,P2_1},{D,P2_1},{C,P2},{C,P1},{C,P2_1},
                   {D,P2_1},{E,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{E,P2},{G,P1},{F,P2_1},
                   {E,P2_1},{D,P1},{E,P2_1},{D,P2_1},{C,P4},{G,P1},{F,P2_1},{E,P2_1},{D,P1},{G0,P2_1},
                   {G0,P2_1},{F,P1},{E,P2_1},{D,P2_1},{C,P2},{G,P1},{F,P2_1},{E,P2_1},{D,P1},{G0,P2_1},
                   {G0,P2_1},{F,P1},{E,P2_1},{D,P2_1},{C,P2_1},{G0,P2_1},{A0,P2_1},{B0,P2_1},{C,P1},{C,P2_1},
                   {D,P2_1},{E,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{E,P2},{G,P1},{F,P2_1},
                   {E,P2_1},{D,P1},{E,P2_1},{D,P2_1},{C,P4}},

		  {{D,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{F,P1},{F,P2_1},{E,P2_1},{D,P2},
		   {D,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{F,P2_1},{E,P2_1},{F,P2_1},{G,P2_1},{A,P2},
		   {D,P1},{E,P2_1},{F,P2_1},{G,P1},{A,P2_1},{G,P2_1},{F,P1},{F,P2_1},{E,P2_1},{D,P2},
		   {E,P1},{E,P1},{E,P1},{F,P2_1},{E,P2_1},{D,P1},{D,P2_1},{C,P2_1},{D,P2},
		   {A,P1},{A,P1},{A,P1},{G,P2_1},{F,P2_1},{G,P1},{G,P2_1},{A,P2_1},{G,P2},
		   {F,P1},{F,P1},{F,P1},{G,P2_1},{F,P2_1},{E,P1},{E,P2_1},{F,P2_1},{E,P2},
		   {A,P1},{A,P1},{A,P1},{G,P2_1},{F,P2_1},{G,P1},{G,P2_1},{A,P2_1},{G,P2},
		   {F,P1},{F,P1},{E,P1},{F,P2_1},{E,P2_1},{D,P1},{D,P2_1},{C,P2_1},{D,P2}},

		  {{G,P1},{C,P2_1},{D,P2_1},{E,P2_1},{F,P2_1},{G,P1},{C,P1},{C,P1},{A,P1},{F,P2_1},
		   {G,P2_1},{A,P2_1},{B,P2_1},{C1,P1},{C,P1},{C,P1},{F,P1},{G,P2_1},{F,P2_1},{E,P2_1},
		   {D,P2_1},{E,P1},{F,P2_1},{E,P2_1},{D,P2_1},{C,P2_1},{B0,P1},{C,P2_1},{D,P2_1},{E,P2_1},
		   {C,P2_1},{D,P3},{G,P1},{C,P2_1},{D,P2_1},{E,P2_1},{F,P2_1},{G,P1},{C,P1},{C,P1},
		   {A,P1},{F,P2_1},{G,P2_1},{A,P2_1},{B,P2_1},{C1,P1},{C,P1},{C,P1},
		   {F,P1},{G,P2_1},{F,P2_1},{E,P2_1},{D,P2_1},{E,P1},{F,P2_1},{E,P2_1},
		   {D,P2_1},{C,P2_1},{D,P1},{E,P2_1},{D,P2_1},{C,P2_1},{B0,P2_1},{C,P3}}
		 };
struct Note soundNotes[4][4] = {{{C,P1},{E,P1},{G,P1},{C1,P1}},			/*胜利*/
				{{C1,P4_1},{G,P4_1},{C1,P4_1},{G,P4_1}},	/*暂停*/
				{{C0,P4_1}},				/*菜单上下*/
				{{E0,P4_1},{G0,P4_1}}			/*确认*/
			       };

struct {
	int interval;
	int lastTime;
} musicTimer;

int musicOn = 1;
int songLen[4] = {106,75,76,64};
int soundLen[4] = {3,3,0,1};

/*01*/	int 	getMemTime	(void);
/*02*/	void 	initMusic	(void);
/*03*/	void	playMusic	(int musIdx, int loop);
/*04*/	void 	playSound	(int musIdx, int key);

int getMemTime(){		/* 得到储存器里0x46c这一块不断定时变动的计数器的数值 */
	int ret;		/* 用于构造类似于定时器的东西 */
	ret = peek(0x0,0x46e);
	ret <<= 8;
	ret += peek(0x0,0x46c);
	return (ret);
}
void initMusic(void){
	musicTimer.lastTime = getMemTime();
	musicTimer.interval = 0;
}

void playMusic(int musIdx, int loop){
	static tmpIdx = 0;
	static tmploop = 0;
	static current = 0;
	int vTime;

	if(musIdx != tmpIdx || loop != tmploop){	/* 换了歌曲 */
		current = 0;
		tmpIdx = musIdx;
		tmploop = loop;
	}

	if(musicOn){
		vTime=getMemTime() - musicTimer.lastTime;
		if(vTime >= musicTimer.interval){
			if(current > songLen[musIdx] - 1){
				if (loop != 0){
					current = 0;
					sound(musicNotes[musIdx][current].s);
					musicTimer.interval = musicNotes[musIdx][current].len;
					musicTimer.lastTime = getMemTime();
					current++;
				}
				else
					nosound();
					return;
			}
			else{
				sound(musicNotes[musIdx][current].s);
				musicTimer.interval = musicNotes[musIdx][current].len;
				musicTimer.lastTime = getMemTime();
				current++;
			}
		}
	}
}

void playSound(int musIdx, int key){
	static tmpIdx = 0;
	static tmpKey = 0;
	static current = 0;
	int vTime;

	if(musIdx != tmpIdx || key != tmpKey){	/* 换了歌曲 */
		current = 0;
		tmpIdx = musIdx;
		tmpKey = key;
	}

	if(musicOn){
		vTime=getMemTime() - musicTimer.lastTime;
		if(vTime >= musicTimer.interval){
			if(current > soundLen[musIdx]){
				nosound();
				return;
			}
			else{
				sound(soundNotes[musIdx][current].s);
				musicTimer.interval = soundNotes[musIdx][current].len;
				musicTimer.lastTime = getMemTime();
				current++;
			}
		}
	}
}