W801学习笔记二十三：语文和英语学习应用的代码汇总-优快云博客

本文链接：https://blog.youkuaiyun.com/vvind/article/details/138584527

前面几章，代码经过重构，可能有点乱。这里给个最终版本，以供参考。

1、应用基类：

IScean.h

enum SceanResult{
	SceanResult_EXIT = 1, 
	SceanResult_Done = 2	
};

class IScean {
	public:
		IScean();
		virtual ~IScean();
		// 纯虚函数
		virtual SceanResult tick(u32 ticks) = 0;
		virtual int scean_init(cJSON* param) {return 0;};
		virtual int scean_resume(void){return 0;};
		virtual int scean_pause(void){return 0;};
	protected:
		map_t iconMap = NULL;
		unsigned char* getImageResource(char* fn);
};

IScean.cpp

int iterate(any_t item, any_t data){
	psram_heap_free((unsigned char *)data);
    return MAP_OK;
}


IScean::IScean(){
	iconMap = hashmap_new();
}

IScean::~IScean(){
	any_t val;
	hashmap_iterate(iconMap, iterate, val);
	hashmap_free(iconMap);
}

unsigned char* IScean::getImageResource(char* fn){
	
	int error;
	unsigned int w,h;
	unsigned char *val;
	error= hashmap_get(iconMap, fn, (void**)(&val));
	
	if(error == MAP_MISSING){
		lodepng_decode32_file(&val, &w, &h, fn);
		hashmap_put(iconMap, fn, val);
	}
	return val;
}

2、学习基类，继承应用基类：

StudyBase.h

class StudyBase : public IScean
{
	public:
		StudyBase(){};
		virtual ~StudyBase(){};
protected:
		u8 gameMode=0;
		u8 winMode=0;
		u8 isFinished=0;
		u16 correntCount =0;
		u16 wrongCount = 0;
		u32 totalTime=0;
		u32 lastTotalTime=0;
   //×○△□
		const char *controlInfo="EXIT: 返回     SELECT: 重新开始";
		const char *answerInfo="× 选择    ○ 选择    □ 选择    △ 选择";

		u16 answerBGColor[4] = {DBLUE, DRED, DGREEN, BROWN }; 
		
		void startPrepare();
		void errorDelay(u8 t);
		u8 checkFinish();
		void showScore();
		void showTime();
		
		u8 answerTitle[4][8] = {
			{0x20,0xA1,0xC1,0x20,0x25,0x73,0x20, 0x0}, // × %s ,
			{0x20,0xA1,0xF0,0x20,0x25,0x73,0x20, 0x0},
			{0x20,0xA1,0xF5,0x20,0x25,0x73,0x20, 0x0},
			{0x20,0xA1,0xF7,0x20,0x25,0x73,0x20, 0x0}}; 
		
private:
		DisplayOption optionScore = {FONT_SIZE_1516, YELLOW, BLACK, 0, 0};
		DisplayOption optionCorrentCount = {FONT_SIZE_1516, GREEN, BLACK, 0, 0};
		DisplayOption optionWrongCount = {FONT_SIZE_1516, RED, BLACK, 0, 0};
		DisplayOption optionTime = {FONT_SIZE_1516, YELLOW, BLACK, 0, 0};
		DisplayOption optionDeCount = {FONT_SIZE_3232, WHITE, DRED, 1, 0};
		
		DisplayOption optionDelay = {FONT_SIZE_2424, WHITE, DRED, 0, 0};
		
		void finish();

};

StudyBase.cpp


#define Prepare_LOC  240, 100


void StudyBase::startPrepare(){
	isFinished =0;
	correntCount =0;
	wrongCount = 0;
	totalTime=0;
	lastTotalTime=0;

	clear_screen();
	optionDeCount.backColor = DRED;
	Display_String(Prepare_LOC, &optionDeCount, "  3  ");
	tls_os_time_delay(1000);
	optionDeCount.backColor = BROWN;
	Display_String(Prepare_LOC, &optionDeCount, "  2  ");
	tls_os_time_delay(1000);
	optionDeCount.backColor = DGREEN;
	Display_String(Prepare_LOC, &optionDeCount, "  1  ");
	tls_os_time_delay(1000);
	Display_Fill_Rectangle(0, 100, 480, 170 ,BLACK);

}

void StudyBase::errorDelay(u8 t){
	for(;t>0;t--){
		Display_String2(400, 50, &optionDelay,"  %d  ",t);
		tls_os_time_delay(1000);
	}
	Display_Fill_Rectangle2(400, 50, 80, 80, BLACK);
}


u8 StudyBase::checkFinish(){
	switch (winMode) {
		case 1:
		if(totalTime > 180000) {
			finish();
			return 1;
		}
		break;
		case 2:
		if(correntCount+ wrongCount == 50) {
			finish();
			return 1;
		}
		break;
		case 3:
		if(wrongCount>0) {
			finish();
			return 1;
		}
		break;
	}
	return 0;
}

void StudyBase::finish(){
	isFinished = 1;
	show_status_info(controlInfo);
	optionDeCount.backColor = DBLUE;
	Display_String(Prepare_LOC, &optionDeCount, "   挑 战 结 束   ");
}


void StudyBase::showScore()
{
	int score = correntCount* 60 - wrongCount * 20;
	if(score<0 ) score =0;
	Display_String2(10, 5, &optionScore, "得分: %06d ", score);
	Display_String2(150, 5, &optionCorrentCount, "正确: %04d ", correntCount);
	Display_String2(270, 5, &optionWrongCount, "错误: %04d ", wrongCount);
}

void StudyBase::showTime()
{
	if(lastTotalTime == totalTime/1000){
		return;
	}
	lastTotalTime = totalTime/1000;
		
	if(winMode == 2)
		Display_String2(400, 5, &optionTime, "%02d:%02d", ((180000- totalTime) / 1000) / 60, ((180000- totalTime) / 1000) % 60);
	else
		Display_String2(400, 5, &optionTime, "%02d:%02d", (totalTime / 1000) / 60, (totalTime / 1000) % 60);	
}

3、语文学习类，继承学习基类：

YuWenTS.h

typedef struct {
	uint16_t question; //问题诗索引
	uint8_t line;  //问题句子所在的行
    u16 answer [4];  // 4个选项对应的行
	uint8_t ans;  //正确选项
	
} TangShiQuestion;

#define TangshiBoxStartX 10
#define TangshiBoxStartY 80
#define TangshiBoxWidth 280
#define TangshiBoxHeight 200
#define TangshiBoxLineHeight 20

class YuWenTS : public StudyBase
{
   public:
      YuWenTS();   
      ~YuWenTS();  
		SceanResult tick(u32 ticks);
		int scean_init(cJSON*  param);
   private:
		void start();
		
		void createTSQuestion();
		void showTSQuetion();
		void showTSAnswer();
		void createSCQuestion();
		void showSCQuetion();
		void showSCAnswer();
		
		void showTangshi();
		void showSongCi();
		
		void correct();
		void wrong();
		TangShiQuestion *currentQuestion;
		
		int offsetY=0;
		u16 boxHeight =0;

		u16 answerX;
		u16 answerY;
		u16 answerIdx;

		DisplayOption optionQuetion = {FONT_SIZE_2424, LIGHTBLUE, BLACK, 0, 1};
		DisplayOption optionZY = {FONT_SIZE_1516, GRAYBLUE, BLACK, 0, 1};
		DisplayOption optionLines = {FONT_SIZE_1516, WHITE, BLACK, 0, 1};
		DisplayOption optionMiss = {FONT_SIZE_1516, RED, DGRAY, 0, 1};
		DisplayOption optionAnswer[4] = {
			{FONT_SIZE_1516, WHITE, answerBGColor[0], 0, 1},
			{FONT_SIZE_1516, WHITE, answerBGColor[1], 0, 1},
			{FONT_SIZE_1516, WHITE, answerBGColor[2], 0, 1},
			{FONT_SIZE_1516, WHITE, answerBGColor[3], 0, 1},
			};  
		
		u16 answerLocX = 300;
		u16 answerLocY[4] = {165, 200, 235, 270};
		
		unsigned char *DataBuff;
		unsigned char *DataBuffIndex;
		
		u16 YuWenCount;
		u16 YuWenItemCount;
		
};

YuWenTS.cpp

#define YUW_Quetion_LOC_A  20, 25
#define YUW_Quetion_LOC_B  170, 55


//读取数据指定行
#define dataLine(idx) ((const char*)DataBuff+((idx) * 64))
//获取索引指定诗所在数据行数
#define dataLineIdx(idx) (((u16*)DataBuffIndex)[(idx)*2+2])
//获取索引指定诗句子总数
#define dataLineCount(idx) (((u16*)DataBuffIndex)[(idx)*2+3])

//获取指定诗指定句子所在行数
#define TangshiLineIdx(x,y)  (dataLineIdx(x)+ y + 2 )
//获取指定诗指定句子所在数据位置
#define TangshiLine(x,y)  (dataLine(dataLineIdx(x)+ y + 2 ))
//获取指定诗标题所在数据位置
#define TangshiLineTitle(x)  (dataLine(dataLineIdx(x)))
//获取指定诗作者所在数据位置
#define TangshiLineAuthor(x)  (dataLine(dataLineIdx(x)+ 1))


YuWenTS::YuWenTS(){
	currentQuestion = new TangShiQuestion();
} 

YuWenTS::~YuWenTS(){
	delete currentQuestion;
	psram_heap_free((void*)DataBuff);
	
}  

int YuWenTS::scean_init(cJSON*  param){
	setKeyAdepterIntervalAll(200);
	setKeyAdepterInterval(KEY_GPIO_A, 65535);
	setKeyAdepterInterval(KEY_GPIO_B, 65535);
	setKeyAdepterInterval(KEY_GPIO_C, 65535);
	setKeyAdepterInterval(KEY_GPIO_D, 65535);
	
	winMode= cJSON_GetObjectItem(param,"w")->valueint;
    gameMode = cJSON_GetObjectItem(param,"m")->valueint;
	
	printf("start chinese. winMode=%d, gameMode=%d.\n", winMode, gameMode);

	switch (gameMode) {
	case 1: // 唐诗300
		fatfs_readFile("project/tangshi300gb.txt", &DataBuff);
		fatfs_readFile("project/tangshi300index.txt", &DataBuffIndex);
		YuWenCount = dataLineIdx(-1);
		YuWenItemCount= dataLineCount(-1);
		break;
	case 2: // 宋词300
		fatfs_readFile("project/songci300gb.txt", &DataBuff);
		fatfs_readFile("project/songci300index.txt", &DataBuffIndex);
		YuWenCount = dataLineIdx(-1);
		YuWenItemCount= dataLineCount(-1);
		break;
	}
	start();
	return 0;
}

SceanResult YuWenTS::tick(u32 ticks){
	if(KEY_EXIT) {
		printf("goto top menu from About.\n");
		return SceanResult_EXIT;
	}
	if(isFinished){
		if(KEY_SEL) {
			start();
			return SceanResult_Done;
		}
	
	}else{
		totalTime+=ticks;
		showTime();

		if(checkFinish()){
			return SceanResult_Done;
		}
		
		if(KEY_A | KEY_B | KEY_C | KEY_D){
			if(KEY_A && currentQuestion->ans == 0){
				correct();
				return SceanResult_Done;
			}
			if(KEY_B && currentQuestion->ans == 1){
				correct();
				return SceanResult_Done;
			}
			if(KEY_C && currentQuestion->ans == 2){
				correct();
				return SceanResult_Done;
			}
			if(KEY_D && currentQuestion->ans == 3){
				correct();
				return SceanResult_Done;
			}
			wrong();
		}

		if(KEY_UP && boxHeight> TangshiBoxHeight){
			int oy = offsetY;
			if(offsetY<0 ){
				offsetY +=TangshiBoxLineHeight;
			}else{
				offsetY =0;
			}
			if(oy !=offsetY )
			showTangshi();
		}
		
		if(KEY_DOWN && boxHeight> TangshiBoxHeight){
			int oy = offsetY;
			if(offsetY > TangshiBoxHeight - boxHeight)	{
				offsetY -=TangshiBoxLineHeight;
			}else{
				offsetY = TangshiBoxHeight - boxHeight;
			}
			if(oy !=offsetY )
			showTangshi();
			
		}
		
		ran_max(10);
	}
	return SceanResult_Done;
}

void YuWenTS::showTSAnswer(){
	Display_String(answerX, answerY, &optionMiss, dataLine(answerIdx));
	for(int i=0;i<4;i++)
	if(currentQuestion->ans !=i)
		Display_Fill_Rectangle2(answerLocX, answerLocY[i]-2, SCREEN_WIDTH - answerLocX, 21 ,BLACK);	
}

void YuWenTS::correct(){
	correntCount++;
	showScore();
	if(checkFinish()==0){
		createTSQuestion();
		showTSQuetion();
		showTangshi();
	}
}

void YuWenTS::wrong(){
	wrongCount++;
	showScore();
	showTSAnswer();
	errorDelay(3);
	if(checkFinish()==0){
		createTSQuestion();
		showTSQuetion();
		showTangshi();	
	}
}

void YuWenTS::start(){
	startPrepare();
	show_status_info(answerInfo);
	showScore();

	createTSQuestion();
	showTSQuetion();
	showTangshi();
}


void YuWenTS::createTSQuestion()
{
	u8 len=0;
	offsetY=0;
	do{
		currentQuestion->question = ran_max(YuWenCount);
		currentQuestion->line = ran_max(dataLineCount(currentQuestion->question));
		len = strlen(TangshiLine(currentQuestion->question, currentQuestion->line));
	}while(len < 15 || len > 25);
	currentQuestion->ans = ran_max(4);

	for(u8 i=0;i<4;i++){
		if(i == currentQuestion->ans){
			currentQuestion->answer[i] = TangshiLineIdx(currentQuestion->question,currentQuestion->line);
		}else{
			do{
				currentQuestion->answer[i] = ran_max(YuWenItemCount);
			}while(len != strlen(dataLine(currentQuestion->answer[i])));
		}
	}
}


void YuWenTS::showTSQuetion(){
	Display_Fill_Rectangle(0,25, 480, 75, BLACK);
	Display_String(YUW_Quetion_LOC_A, &optionQuetion, TangshiLineTitle(currentQuestion->question));
	Display_String(YUW_Quetion_LOC_B, &optionZY, TangshiLineAuthor(currentQuestion->question));
	
	for(u8 i=0;i<4;i++){
		Display_Fill_Rectangle2(answerLocX, answerLocY[i]-2, SCREEN_WIDTH - answerLocX, 21 ,answerBGColor[i]);
		Display_String2(answerLocX, answerLocY[i], &optionAnswer[i], (const char *)answerTitle[i], dataLine(currentQuestion->answer[i]));
	}
}

void YuWenTS::showTangshi(){
	Display_Fill_Rectangle2(TangshiBoxStartX,TangshiBoxStartY, TangshiBoxWidth, TangshiBoxHeight, BLACK);
	u16 offx = 0;
	int offy = offsetY;
	boxHeight=1;
	const char *sl;
	for(u8 i=0;i< dataLineCount(currentQuestion->question) ;i++){
		sl= TangshiLine(currentQuestion->question, i);
		u16 len = strlen(sl);
		if(sl[0] == 'g' ){
			offx = 0;
			offy += 20;
			boxHeight++;
			continue;
		}
		if(offx + len* 8 > TangshiBoxWidth){
			offx = 0;
			offy += 20;
			boxHeight++;
		}

		if(offy <0 || offy>TangshiBoxHeight-TangshiBoxLineHeight ){
			offx += len*8;
			continue;
		}

		if (i== currentQuestion->line){
				answerX=offx + TangshiBoxStartX;
				answerY=offy + TangshiBoxStartY;
				answerIdx = TangshiLineIdx(currentQuestion->question, i);
			for(u8 j=0;j< len; j++){
				Display_String(answerX+ j*8, answerY, &optionMiss, "_") ;
			}
		}else{
			Display_String(offx + TangshiBoxStartX, offy + TangshiBoxStartY, &optionLines, 
				TangshiLine(currentQuestion->question, i));
		}
		offx += len*8;
	}
	boxHeight = boxHeight*TangshiBoxLineHeight;
	
	if(boxHeight > TangshiBoxHeight){
		Display_Fill_Rectangle(TangshiBoxStartX + TangshiBoxWidth - 10, TangshiBoxStartY, 
			TangshiBoxStartX + TangshiBoxWidth -1, TangshiBoxStartY + TangshiBoxHeight, GRAY);


		double a = (double) (-offsetY) / boxHeight * TangshiBoxHeight;
		double b = (double) (-offsetY + TangshiBoxHeight) / boxHeight * TangshiBoxHeight;

		Display_Fill_Rectangle(TangshiBoxStartX + TangshiBoxWidth - 9,
			TangshiBoxStartY + a, 
			TangshiBoxStartX + TangshiBoxWidth -2,
			TangshiBoxStartY + b,
			GREEN);

	}
}

4、英语学习类，继承学习基类：

YingYu.h

typedef struct {
	uint16_t question;
    uint16_t answer[4];
	uint8_t ans;
} EngQuestion;

class YingYu : public StudyBase
{
   public:
      YingYu();   
      ~YingYu();  
		SceanResult tick(u32 ticks);
		int scean_init(cJSON*  param);

private:

   EngQuestion *currentQuestion;
   void start();
   void createQuestion();
   void createQuestionMode3();
   void showQuetion();
   void showAnswer();
   void correct();
   void wrong();

	DisplayOption optionQuetion = {FONT_SIZE_2424, YELLOW, BLACK, 1, 1};
	DisplayOption optionZY = {FONT_SIZE_2424, WHITE, BLACK, 1, 1};
	DisplayOption optionAnswer[4] = {
			{FONT_SIZE_1516, WHITE, answerBGColor[0], 0, 1},
			{FONT_SIZE_1516, WHITE, answerBGColor[1], 0, 1},
			{FONT_SIZE_1516, WHITE, answerBGColor[2], 0, 1}, 
			{FONT_SIZE_1516, WHITE, answerBGColor[3], 0, 1}};

	u16 Eng_Answer_LOC_X=20;

	u16 Eng_Answer_LOC_Y[4] = {195,220,245,270};

   char errEngWord[4][40];
   
	unsigned char *DataBuff;
      
	int YingYuCount;
};

YingYu.cpp


#define Eng_Quetion_LOC_A  240, 100
#define Eng_Quetion_LOC_B  240, 140

typedef struct YingYuWord
{
	const char *en; //32
	const char *sd; //32
	const char *cn; //64
}YingYuWord;

typedef struct YingYuDuanYu
{
	const char *en; //64
	const char *cn; //64
}YingYuDuanYu;

YingYu::YingYu(){
	currentQuestion = new EngQuestion();
} 
YingYu::~YingYu(){
	delete currentQuestion;
	psram_heap_free((void*)DataBuff);
}  

int YingYu::scean_init(cJSON*  param){
	setKeyAdepterIntervalAll(200);
	setKeyAdepterInterval(KEY_GPIO_A, 65535);
	setKeyAdepterInterval(KEY_GPIO_B, 65535);
	setKeyAdepterInterval(KEY_GPIO_C, 65535);
	setKeyAdepterInterval(KEY_GPIO_D, 65535);
	
	winMode= cJSON_GetObjectItem(param,"w")->valueint;
    gameMode = cJSON_GetObjectItem(param,"m")->valueint;
	
	printf("start chinese. winMode=%d, gameMode=%d.\n", winMode, gameMode);
	
	fatfs_readFile(cJSON_GetObjectItem(param,"f")->valuestring, &DataBuff);
	YingYuCount = DataBuff[12] | (DataBuff[13]<<8) | (DataBuff[14]<<16)| (DataBuff[15]<<24);

	start();
	return 0;
}
void YingYu::start(){
	startPrepare();
	show_status_info(answerInfo);
	showScore();
	createQuestion();
	showQuetion();
}

#define dataDC(idx) ((const char*)DataBuff+((idx) * 128) + 64)
#define dataZY(idx) ((const char*)DataBuff+((idx) * 128) + 96)
#define dataCN(idx) ((const char*)DataBuff+((idx) * 128) + 128)


void YingYu::showQuetion()
{
	u8 i;
	for(i=0;i<4;i++)
		Display_Fill_Rectangle2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i]-2, 440, 21 ,answerBGColor[i]);
		
		Display_Fill_Rectangle2(0,100, 480, 80, BLACK);
	
	printf("q=%d, a=%d, a1=%d, a2=%d, a3=%d, a4=%d\n",currentQuestion->question,currentQuestion->ans,currentQuestion->answer[0]
,currentQuestion->answer[1]
,currentQuestion->answer[2]
,currentQuestion->answer[3] );
	
	switch (gameMode) {
		case 1:
			Display_String(Eng_Quetion_LOC_A, &optionQuetion, dataDC(currentQuestion->question));
			Display_String2(Eng_Quetion_LOC_B, &optionZY, "[%s]", dataZY(currentQuestion->question));
			for(i=0;i<4;i++)
				Display_String2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i], &optionAnswer[i], (const char *)answerTitle[i], dataCN(currentQuestion->answer[i]));
			break;
		case 2:
			Display_String(Eng_Quetion_LOC_A, &optionQuetion, dataCN(currentQuestion->question));
			Display_String2(Eng_Quetion_LOC_B, &optionZY, "[%s]", dataZY(currentQuestion->question));
			for(i=0;i<4;i++)
				Display_String2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i], &optionAnswer[i], (const char *)answerTitle[i], dataDC(currentQuestion->answer[i]));
			break;
		case 3:
			Display_String(Eng_Quetion_LOC_A, &optionQuetion, dataCN(currentQuestion->question));
			Display_String2(Eng_Quetion_LOC_B, &optionZY, "[%s]", dataZY(currentQuestion->question));
			for(i=0;i<4;i++)
				Display_String2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i], &optionAnswer[i], (const char *)answerTitle[i], errEngWord[i]);
			break;
		case 4:
			Display_String(Eng_Quetion_LOC_A, &optionQuetion, dataDC(currentQuestion->question));
			for(i=0;i<4;i++)
				Display_String2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i], &optionAnswer[i], (const char *)answerTitle[i], dataCN(currentQuestion->answer[i]));
			break;
		case 5:
			Display_String(Eng_Quetion_LOC_A, &optionQuetion, dataCN(currentQuestion->question));
			for(i=0;i<4;i++)
				Display_String2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i], &optionAnswer[i], (const char *)answerTitle[i], dataDC(currentQuestion->answer[i]));
			break;
		
	}
}

void YingYu::showAnswer(){
	for(u8 i=0;i<4;i++)
		if(currentQuestion->ans !=i)	Display_Fill_Rectangle2(Eng_Answer_LOC_X, Eng_Answer_LOC_Y[i]-2, 440, 21 ,BLACK);
}


SceanResult YingYu::tick(u32 ticks){
	if(KEY_EXIT) {
		printf("goto top menu from About.\n");
		return SceanResult_EXIT;
	}
	if(isFinished){
		if(KEY_SEL) {
			start();
			return SceanResult_Done;
		}
	
	}else{
		totalTime+=ticks;
		showTime();

		if(checkFinish()){
			return SceanResult_Done;
		}
		
		if(KEY_A | KEY_B | KEY_C | KEY_D){
			if(KEY_A && currentQuestion->ans == 0){
				correct();
				return SceanResult_Done;
			}
			if(KEY_B && currentQuestion->ans == 1){
				correct();
				return SceanResult_Done;
			}
			if(KEY_C && currentQuestion->ans == 2){
				correct();
				return SceanResult_Done;
			}
			if(KEY_D && currentQuestion->ans == 3){
				correct();
				return SceanResult_Done;
			}
			wrong();
		}
		ran_max(10);
	}
	return SceanResult_Done;
}


void YingYu::correct(){
	correntCount++;
	showScore();
	if(checkFinish()==0){
		createQuestion();
		showQuetion();
	}
}
void YingYu::wrong(){
	wrongCount++;
	showScore();
	showAnswer();
	errorDelay(3);
	if(checkFinish()==0){
		createQuestion();
		showQuetion();
	}
}


void YingYu::createQuestion()
{

	currentQuestion->question = ran_max(YingYuCount);
	currentQuestion->ans = ran_max(4);
	
	for(u8 i=0;i<4;i++){
		if(i == currentQuestion->ans){
			currentQuestion->answer[i] = currentQuestion->question;
		}else{
			currentQuestion->answer[i] = ran_max(YingYuCount);
		}
	}
	if(gameMode == 3){
		createQuestionMode3();
	}

}

void YingYu::createQuestionMode3()
{
	uint8_t i,e1,e2;
	char ne1,ne2;
	u8 len = strlen(dataDC(currentQuestion->question));
	for(i=0; i<4; i++) {
		memset(errEngWord[i], 0, 40);
		memcpy(errEngWord[i],  dataDC(currentQuestion->question), len);
	}
	e1 = ran_max(len);
	while(errEngWord[0][e1] < 97 || errEngWord[0][e1] > 122) {
		e1 = ran_max(len);
	}
	e2 = e1;
	while(e2 == e1 || errEngWord[0][e2] < 97 || errEngWord[0][e2] > 122) {
		e2 = ran_max(len);
	}
	ne1 = errEngWord[0][e1] - ran_max(25) -1;
	if(ne1 < 97) {
		ne1 =ne1 + 26;
	}
	ne2 = errEngWord[0][e2] - ran_max(25) -1;
	if(ne2 < 97) {
		ne2 =ne2 + 26;
	}

	errEngWord[(currentQuestion->ans + 1) % 4][e1] = ne1;
	errEngWord[(currentQuestion->ans + 2) % 4][e1] = ne1;
	errEngWord[(currentQuestion->ans + 2) % 4][e2] = ne2;
	errEngWord[(currentQuestion->ans + 3) % 4][e2] = ne2;

}