snake.c

brew写的snake小游戏。主要有文件的操作

		
		IMENUCTL_SetActive(pMe->pIMenuCtl, TRUE); // 激活菜单控件对象
		
		pMe->Mode = MODE_MENU; // 切换到主菜单状态
		
		return TRUE;
		
	}

	return FALSE;
}

static void main_Display(snake* pMe)
{
	int i;
	
	AEERect rc[SNAKE_MAX_LENGTH+1]; /* 设置局部变量保存蛇的身体，最后一位“+1”是用来保存食物的 */ 
	IDISPLAY_FillRect(pMe->a.m_pIDisplay, &(pMe->ScreenRect), MAKE_RGB(0, 0, 0)); /*用纯黑背景刷新屏幕 */
	
	switch (pMe->Mode){
		
	case MODE_MENU:
		
		IMENUCTL_Redraw(pMe->pIMenuCtl); //刷新菜单控件显示
		
		break;
	case MODE_GAME://游戏状态
		
		if (pMe->life==1){//失败
			
			draw_Lost(pMe);
			
			return;
		}
		IDISPLAY_ClearScreen(pMe->a.m_pIDisplay);
		IDISPLAY_DrawRect(pMe->a.m_pIDisplay, &(pMe->ScreenRect), BLUE, BLACK, IDF_RECT_FILL|IDF_RECT_FRAME);/* 绘制背景和墙壁 */
		
		
		if (pMe->yes == 1){
			/* 需出现新食物 */
			
			new_Food(pMe);
			/* 生成新的食物 */
			
			pMe->yes = 0;
			/* 新食物已经出现 */
			
		}


		for (i = pMe->length; i > 0; i--){ /* 蛇身体向前移动 */
			
			pMe->x[i] = pMe->x[i-1];
			
			pMe->y[i] = pMe->y[i-1];
			
		}

		switch (pMe->direction){ /* 蛇头移动 */
			
		case RIGHT: pMe->x[0] += 8; break;
			
		case LEFT: pMe->x[0] -= 8; break;
			
		case UP: pMe->y[0] -= 8; break;
			
		case DOWN: pMe->y[0] += 8; break;
			
		}
		pMe->bDirectionChg = TRUE;

/*设置蛇可穿墙 */

		if (pMe->x[0] > pMe->DeviceInfo.cxScreen - 8) pMe->x[0] = 0;
		
		if (pMe->x[0] < 0) pMe-> x[0] = pMe->DeviceInfo.cxScreen - 8;
		
		if (pMe->y[0] > pMe->DeviceInfo.cyScreen - 8) pMe->y[0] = 0;
		
		if (pMe->y[0] < 0) pMe-> y[0] = pMe->DeviceInfo.cyScreen - 8;

		
		if (pMe->yes == 0){
		/*
			显示已有的食物 */
			
			SETAEERECT(&rc[SNAKE_MAX_LENGTH],pMe->foodx,pMe->foody, 8, 8);
			
			IDISPLAY_DrawRect(pMe->a.m_pIDisplay,&rc[SNAKE_MAX_LENGTH], BLUE, RED, IDF_RECT_FILL|IDF_RECT_FRAME);
			
		}

		
		
		if ((pMe->x[0] == pMe->foodx) && (pMe->y[0] == pMe->foody)){ /* 食到食物*/
			
			
			pMe->length++; /* 蛇身长一节 */
			
			pMe->yes = 1; /* 画面上需出现新的食物 */
			
			pMe->scores += 10; /* 更新得分 */
			
		}

		
		for (i = 0; i < pMe->length; i++)		
		{
			SETAEERECT(&rc[i],pMe->x[i],pMe->y[i],8,8);
		}

		
		for (i = 0; i < pMe->length; i++)
			
			IDISPLAY_DrawRect(pMe->a.m_pIDisplay,&rc[i], BLUE, GREEN, IDF_RECT_FRAME|IDF_RECT_FILL);//绘制矩形，蛇的身体
		


		for (i = 3; i < pMe->length; i ++){ /* 从蛇的第四节开始判断是否撞到自己了 */
			
			if ((pMe->x[i] == pMe->x[0]) && (pMe->y[i] == pMe->y[0])){
				
				
				pMe->life = 1; /* 设置蛇的生命，游戏失败 */
				stopSound(pMe);
				saveScore(pMe);
				
			}
			
		}
		if ((pMe->x[0] == pMe->foodx) && (pMe->y[0] == pMe->foody)){ 

		playTone(pMe);//播放音效

		}
        IDISPLAY_Update(pMe->a.m_pIDisplay);
		
		break;

		default:
			
			break;
	}
}

static void release_Menuctl(snake* pMe)
{ 
	if ( pMe->pIMenuCtl != NULL )
	{
		
		
		IMENUCTL_Release(pMe->pIMenuCtl);
		
		
		pMe->pIMenuCtl = NULL;
		
	}
}


static void draw_Lost(snake* pMe)
{
	ISHELL_CancelTimer(pMe->a.m_pIShell,(PFNNOTIFY)main_Loop,pMe);
	load_Draw_PNG(pMe); //显示55.png
	
	draw_Ellipse(pMe); //画椭圆
	
	load_Draw_BMP(pMe); //椭圆里面显示lost.bmp
IDISPLAY_Update(pMe->a.m_pIDisplay);
}
/* load_Draw_PNG 函数功能：载入并显示PNG图片 */
static void load_Draw_PNG(snake* pMe)
{
	
	IImage* pimg = NULL; //PNG图片指针
	
	AEEImageInfo imginfo; //PNG图片信息
	
	pimg = ISHELL_LoadImage(pMe->a.m_pIShell, "55.png"); /* 载入PNG图片文件 */
	
	if (pimg)
	{ //如果图片载入成功
		
		IIMAGE_GetInfo(pimg, &imginfo); /* 得到图片大小等信息 */
		
		IIMAGE_Draw(pimg, (pMe->DeviceInfo.cxScreen - imginfo.cx)/2, pMe->DeviceInfo.cyScreen - imginfo.cy); /* 图片画在手机屏幕的底部中央 */
		
		IIMAGE_Release(pimg); /* 用完释放图片 */
		
	}
}
/* draw_Ellipse 函数功能：创建IGraphics接口实例并且描绘矩形 */
static void draw_Ellipse(snake* pMe)
{
	
	IGraphics* pgraphic = NULL;
	
	AEEEllipse pellipse; 
	
	pellipse.cx = pMe->DeviceInfo.cxScreen/2; /* 椭圆中心点X, Y坐标 */
	
	pellipse.cy = 30;
	
	pellipse.wx = 40; /* 椭圆X,Y方向半轴长度 */
	
	pellipse.wy = 20;
	
	if(SUCCESS == ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_GRAPHICS, (void **)&pgraphic))
	{
		
		IGRAPHICS_SetFillColor(pgraphic, 255, 0, 0, NULL);
		/* 设置填充红色 */
		
		IGRAPHICS_SetFillMode(pgraphic, TRUE); /* 设置填充模式 */
		
		IGRAPHICS_DrawEllipse(pgraphic, &pellipse); /* 根据前面得设置描绘椭圆*/ 
		
		IGRAPHICS_Release(pgraphic); /* 释放接口 */
		
	}
}
/* load_Draw_BMP 函数功能：载入并显示BMP图片 */
static void load_Draw_BMP(snake* pMe)
{
	
	IBitmap* pbmp = NULL; //BMP图片指针
	
	AEEBitmapInfo bmpinfo; //BMP图片信息
	
	pbmp = ISHELL_LoadBitmap(pMe->a.m_pIShell, "lost.bmp"); /* 载入BMP图片文件 */
	
	if (pbmp)
	{ //如果图片载入成功
		
		IBITMAP_GetInfo(pbmp, &bmpinfo, sizeof(AEEBitmapInfo)); /* 得到图片大小等信息 */
		
		IDISPLAY_BitBlt ( pMe->a.m_pIDisplay, (pMe->DeviceInfo.cxScreen - bmpinfo.cx)/2, 20, 
			bmpinfo.cx, bmpinfo.cy, (const void*) pbmp, 0, 0, NULL,);
		
		IBITMAP_Release(pbmp); /* 用完释放图片 */
	}
}


/*播放背景音乐 */
static void playSound(snake* pMe)
{
	AEEMediaData pinfo; /* 音频源信息 */
	pinfo.clsData = MMD_FILE_NAME; /* 指定文件 */
	pinfo.pData = (void *)"test.mp3"; /* 指向文件名的指针 */
	pinfo.dwSize = NULL; /* 缓冲区地址，指向文件时无效 */
	ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_MEDIAMP3, (void **)&(pMe->pimedia)); /* 创建pimedia对象，指定使用MP3文件 */
	IMEDIA_SetMediaData(pMe->pimedia, &pinfo); /* 设置音频信息 */
	IMEDIA_Play(pMe->pimedia); /* 播放声音 */
}

/*播放特殊音效*/
static void playTone(snake* pMe)
{
	ISound *pisound;
	AEESoundToneData tonedata; /* 音调数据 */
	tonedata.eTone = AEE_TONE_ANSWER_TONE; /* 设置一种音调 */
	tonedata.wDuration = 30; /* 音调持续时间 */
	ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_SOUND, (void **)&pisound);
	ISOUND_PlayTone(pisound,tonedata); /* 播放音调 */
	ISOUND_Release(pisound); /* 释放接口 */
}
/* 游戏结束时，停止声音效果和释放接口 */
static void stopSound(snake* pMe)
{
	if (pMe->pimedia)
	{ 
		
		IMEDIA_Stop (pMe->pimedia); /* 停止播放 */
		
		IMEDIA_Release(pMe->pimedia); /* 释放接口 */
		
		pMe->pimedia = NULL; /* 清空，防止重复释放 */
	}
}

/* loadScore 函数功能：排行榜从文件中读取排行榜中的高分纪录,如果纪录文件不存在,则分数全初始化为0 */
static void loadScore(snake* pMe){

	IFileMgr *pIFileMgr = NULL;
	
	IFile *pIFile = NULL;
	
	int i;
	
	for (i = 0; i < 5; i++){ /* 初始化分数全为0 */
		
		pMe->HighScore[i] = 0;
		
	}

/* 创建文件接口实例 */

	if (SUCCESS == ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_FILEMGR, (void**)&pIFileMgr)){
		
		
		if (pIFileMgr){
			
			pIFile = IFILEMGR_OpenFile(pIFileMgr, SAVE_FILE, _OFM_READ); /* 打开纪录文件 */
			
			if (pIFile){ /* 排行榜纪录文件存在 */
				
				if (IFILE_Read(pIFile, (void*)pMe->HighScore, sizeof(pMe->HighScore)) == sizeof(pMe->HighScore)){/* 从文件中读取排行榜分数 */
					
				}else{
					
					DBGPRINTF("---Load file error!---"); /* 打印信息提示文件读取出错 */
					
				}
				
				IFILE_Release(pIFile);
				
			}


IFILEMGR_Release(pIFileMgr); /* 释放相关文件接口 */

}

}
}

/* saveScore 函数功能：游戏结束后得分如果破纪录，则更新排行榜并存储到文件中 */
static void saveScore(snake* pMe){
	
	IFileMgr *pIFileMgr = NULL;
	
	IFile *pIFile = NULL;
	
	int ret, i, j;
	
	/* 创建文件接口实例 */
	
	if (SUCCESS == ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_FILEMGR, (void**)&pIFileMgr)){
		
		
		if (pIFileMgr){ /* 创建接口成功 */
			
			ret = IFILEMGR_GetFreeSpace(pIFileMgr, NULL); /*得到剩余的文件空间*/
			
			if(ret < sizeof(pMe->HighScore)){ /* 空间不够则不再进行存储 */
				
				IFILEMGR_Release(pIFileMgr); 
				
				return;
				
			}
			
			if (SUCCESS == IFILEMGR_Test(pIFileMgr, SAVE_FILE)){/* 如果已经存在最高分记录文件 */
				
				pIFile = IFILEMGR_OpenFile(pIFileMgr, SAVE_FILE, _OFM_READWRITE); /* 读写方式打开文件 */
				
			}else{
				
				pIFile = IFILEMGR_OpenFile(pIFileMgr, SAVE_FILE, _OFM_CREATE); /* 新建文件来存储最高分 */ 
				
			}
			
			if (pIFile){ /* 文件打开或者新建成功 */
				
				for (i = 0; i < 5; i++){
					
					if (pMe->scores > pMe->HighScore[i]){ /* 如果得分上榜 */
						
						for (j = 4; j > i; j--){/* 重新排列排行榜 */
							
							pMe->HighScore[j] = pMe->HighScore[j-1];
							
						}
						
						pMe->HighScore[i] = pMe->scores; /* 新纪录上榜 */
						
						break;

}

}

if (IFILE_Write(pIFile, (PACKED const void*)pMe->HighScore,sizeof(pMe->HighScore)) == sizeof(pMe->HighScore)){ /* 保存排行榜分数到文件 */

}else{

DBGPRINTF("---Save file error!---"); /* 打印信息提示文件存储出错 */

}

IFILE_Release(pIFile);

}

IFILEMGR_Release(pIFileMgr); /* 释放相关文件接口 */

}

}
}

/* show_HighScore 函数功能：排行榜画面显示历史前五名最高得分 */
static void show_HighScore(snake* pMe){
	
	AECHAR wstr[100];
	
	char str[100];
	
	int i;
	int res = 0;
	IDISPLAY_ClearScreen(pMe->a.m_pIDisplay);
	IDISPLAY_SetColor(pMe->a.m_pIDisplay, CLR_USER_TEXT, BLUE); /* 设置标题蓝色 */
	
	IDISPLAY_DrawText(pMe->a.m_pIDisplay, AEE_FONT_BOLD, L"HighScores", -1,0, 10, NULL, IDF_ALIGN_CENTER|IDF_TEXT_UNDERLINE|IDF_TEXT_TRANSPARENT); /* 标题加粗、居中并加下划线 */
	
	IDISPLAY_SetColor(pMe->a.m_pIDisplay, CLR_USER_TEXT, RED); /* 设置分数白色 */
	
	for(i = 0; i < 5; i ++)
	{
		
		SPRINTF(str, "%d.%d", i+1, pMe->HighScore[i]); /* 转换分数到字符串 */
		
		STRTOWSTR(str, wstr, sizeof(str)+1); /* 转换成BREW用来显示的宽字节字符串 */
		
		res = IDISPLAY_DrawText(pMe->a.m_pIDisplay, AEE_FONT_NORMAL, wstr, -1,20, 40 + i*20, NULL, IDF_TEXT_TRANSPARENT); /* 显示排行榜上各分数*/
		
	}
	IDISPLAY_Update(pMe->a.m_pIDisplay);
}

static void main_Loop(snake* pMe)
{
	 main_Display(pMe);
	 ISHELL_SetTimer(pMe->a.m_pIShell,200,(PFNNOTIFY)(main_Loop),(void*)pMe);

}
static void new_Food(snake* pMe)
{
	pMe->foodx = 50;
	pMe->foody = 34;
}

static void init_GameData(snake* pMe)
{
	new_Food(pMe);
	pMe->life = 0;
	pMe->length = 3;
	pMe->yes = 0;
	pMe->x[0] = 50;
	pMe->y[0] = 50;
	pMe->x[1] = 58;
	pMe->y[1] = 50;
	pMe->x[2] = 64;
	pMe->y[2] = 50;
	pMe->direction = RIGHT;
	pMe->bDirectionChg = FALSE;
	pMe->scores  = 0;
}