main.c

用C编写的贪吃蛇程序

#include <io.h>
#include <interrupt.h>
#include <delay.h>
#include <pgmspace.h>
#include <stdlib.h>
#define LCD_DC_SET PORTB |= (1 << PB3)
#define LCD_DC_CLR PORTB &= ~(1 << PB3)
#define LCD_CE_SET PORTB |= (1 << PB4)
#define LCD_CE_CLR PORTB &= ~(1 << PB4)

#define LCD_RST_SET PORTB |= (1 << PB6)
#define LCD_RST_CLR PORTB &= ~(1 << PB6)
#define HANZIKU_MAX 4
#define GAME_FIELD_HEIGHT 12
#define GAME_FIELD_WIDTH 21
#define SNAKE_GROUND	0
#define SNAKE_UP		1	
#define SNAKE_RIGHT		2	
#define SNAKE_DOWN		3
#define SNAKE_LEFT		4

#define SNAKE_FOOD		255	
#define KEY_UP (PIND & (1 << PD3))
#define KEY_DOWN (PIND & (1 << PD4))
#define KEY_LEFT (PIND & (1 << PD5))
#define KEY_RIGHT (PIND & (1 << PD6))
typedef  struct HanziStruct //汉字结构体
{ 
    uint8_t data[24];
    uint8_t hanzi[2]; 
}HANZI_STRUCT;
typedef struct SnakeBody //蛇身结构体
{
	uint8_t x;
	uint8_t y;
}SNAKE_BODY;

uint8_t cDisplayRam[6][84] = {0}; //显示缓存
uint8_t cGameField[GAME_FIELD_HEIGHT][GAME_FIELD_WIDTH] = {0}; //游戏地图
SNAKE_BODY SnakeHead = {0}; //蛇头
SNAKE_BODY SnakeTail = {0}; //蛇尾
uint8_t cKeyCode = 0;
uint8_t cSnakeHeadDir;
uint16_t cFoodCnt = 0; //食物计数器
volatile uint16_t cTimerCnt = 0;
volatile uint8_t cSnakeMoveFlag = 0;
uint8_t cSnakeEatFoodFlag = 0;

const uint8_t cBmpCode[504] PROGMEM =
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xB8,0xB8,0xF8,
0xF0,0xE0,0x80,0x80,0x80,0x80,0x00,0xE0,0xF0,0x98,0x08,0x08,0xB8,0xB0,0x80,0x80,
0x80,0x00,0xF8,0xF8,0xF8,0xC0,0x00,0xF8,0xF8,0x00,0x80,0x80,0x00,0x00,0xE0,0xF8,
0xF8,0xF8,0x00,0x80,0x80,0x80,0x00,0xF8,0xF8,0x80,0xC0,0xF0,0x38,0x88,0x80,0x80,
0x00,0xF8,0xF8,0x08,0x08,0x08,0x08,0x00,0x80,0x00,0x00,0x00,0x80,0xC0,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x07,0x0F,0x1F,0x3F,
0x7F,0x77,0x77,0x7F,0x3F,0x1F,0x07,0x07,0x07,0x07,0x17,0x76,0x65,0x45,0x43,0x7E,
0x3E,0x01,0x0F,0x0F,0x07,0x78,0x7F,0x07,0x03,0x1F,0x7C,0x7F,0x07,0x08,0x0F,0x67,
0x78,0x1F,0x07,0x04,0x07,0x7F,0x7C,0x03,0x0F,0x07,0x78,0x7F,0x07,0x03,0x0F,0x7F,
0x70,0x0F,0x0F,0x07,0x78,0x7F,0x47,0x41,0x41,0x41,0x01,0x00,0x0F,0x07,0x03,0x03,
0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00

};
const uint8_t Ascii[][5] PROGMEM =
{
    { 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp 
    { 0x00, 0x00, 0x2f, 0x00, 0x00 }, // ! 
    { 0x00, 0x07, 0x00, 0x07, 0x00 }, // " 
    { 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # 
    { 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ 
    { 0xc4, 0xc8, 0x10, 0x26, 0x46 }, // % 
    { 0x36, 0x49, 0x55, 0x22, 0x50 }, // & 
    { 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' 
    { 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( 
    { 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) 
    { 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * 
    { 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + 
    { 0x00, 0x00, 0x50, 0x30, 0x00 }, // , 
    { 0x10, 0x10, 0x10, 0x10, 0x10 }, // - 
    { 0x00, 0x60, 0x60, 0x00, 0x00 }, // . 
    { 0x20, 0x10, 0x08, 0x04, 0x02 }, // / 
    { 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 
    { 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 
    { 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 
    { 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 
    { 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 
    { 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 
    { 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 
    { 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 
    { 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 
    { 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 
    { 0x00, 0x36, 0x36, 0x00, 0x00 }, // : 
    { 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; 
    { 0x08, 0x14, 0x22, 0x41, 0x00 }, // < 
    { 0x14, 0x14, 0x14, 0x14, 0x14 }, // = 
    { 0x00, 0x41, 0x22, 0x14, 0x08 }, // > 
    { 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? 
    { 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ 
    { 0x7E, 0x11, 0x11, 0x11, 0x7E }, // A 
    { 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B 
    { 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C 
    { 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D 
    { 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E 
    { 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F 
    { 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G 
    { 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H 
    { 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I 
    { 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J 
    { 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K 
    { 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L 
    { 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M 
    { 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N 
    { 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O 
    { 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P 
    { 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q 
    { 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R 
    { 0x46, 0x49, 0x49, 0x49, 0x31 }, // S 
    { 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T 
    { 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U 
    { 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V 
    { 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W 
    { 0x63, 0x14, 0x08, 0x14, 0x63 }, // X 
    { 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y 
    { 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z 
    { 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ 
    { 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // 55 
    { 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] 
    { 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ 
    { 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ 
    { 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' 
    { 0x20, 0x54, 0x54, 0x54, 0x78 }, // a 
    { 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b 
    { 0x38, 0x44, 0x44, 0x44, 0x20 }, // c 
    { 0x38, 0x44, 0x44, 0x48, 0x7F }, // d 
    { 0x38, 0x54, 0x54, 0x54, 0x18 }, // e 
    { 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f 
    { 0x0C, 0x52, 0x52, 0x52, 0x3E }, // g 
    { 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h 
    { 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i 
    { 0x20, 0x40, 0x44, 0x3D, 0x00 }, // j 
    { 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k 
    { 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l 
    { 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m 
    { 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n 
    { 0x38, 0x44, 0x44, 0x44, 0x38 }, // o 
    { 0x7C, 0x14, 0x14, 0x14, 0x08 }, // p 
    { 0x08, 0x14, 0x14, 0x18, 0x7C }, // q 
    { 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r 
    { 0x48, 0x54, 0x54, 0x54, 0x20 }, // s 
    { 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t 
    { 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u 
    { 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v 
    { 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w 
    { 0x44, 0x28, 0x10, 0x28, 0x44 }, // x 
    { 0x0C, 0x50, 0x50, 0x50, 0x3C }, // y 
    { 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z
	{ 0x18, 0x3C, 0x3C, 0x7F, 0xFF }, // {
	{ 0xFF, 0x00, 0x00, 0x00, 0x00 }, // |
	{ 0xFF, 0xFF, 0x7E, 0x3C, 0x18 }, // }
	
};
const HANZI_STRUCT Hanziku[HANZIKU_MAX] PROGMEM =
{
	0x19,0xE2,0x14,0x42,0xF2,0x2E,0x72,0x8F,
	0xAA,0x7A,0x02,0x00,0x01,0x07,0x00,0x00,
	0x07,0x04,0x04,0x02,0x01,0x02,0x04,0x00, "液",
	/* (12 X 12 , 宋体 )*/
	0x00,0xC0,0x40,0x5F,0xD5,0x15,0xD5,0x55,
	0x5F,0x40,0xC0,0x00,0x00,0x07,0x05,0x05,
	0x07,0x00,0x07,0x05,0x05,0x05,0x07,0x00, "晶",
	/* (12 X 12 , 宋体 )*/
	0x21,0x3D,0x21,0x3F,0xE0,0x00,0xFF,0x89,
	0x51,0x71,0x8D,0x00,0x01,0x05,0x05,0x06,
	0x01,0x00,0x07,0x04,0x04,0x04,0x05,0x00, "驱",
	/* (12 X 12 , 宋体 )*/
	0x92,0x52,0x32,0x52,0x92,0x10,0x08,0xFF,
	0x08,0x08,0xF8,0x00,0x03,0x01,0x01,0x01,
	0x05,0x02,0x01,0x04,0x04,0x06,0x01,0x00, "动",

};


uint8_t Ziku_FindHanzi(uint8_t *pcBuff)
{
    HANZI_STRUCT *pcHanziku;
    uint8_t i;
    pcHanziku = Hanziku;
    for(i = 0; i < HANZIKU_MAX ; i++)
    {
        if(pgm_read_byte(pcHanziku->hanzi) ==  pcBuff[0] &&
            pgm_read_byte(pcHanziku->hanzi + 1) ==  pcBuff[1])
        {
            return i;
        }
        else
        {
            pcHanziku++;
        }
    }
    return 0;
}
/*************************************************************************
*名称: DelayMS  									 
*功能: 延时nms					       									
*参数: 无     		                   									
*返回: 无		                           								
*************************************************************************/
void Delay_MS(uint16_t dMS)
{	
	while(dMS--)
	{
		_delay_loop_2(2000);	// 延时1ms(粗略)
	}
}

/*************************************************************************
*名称: void Port_Init(void)				 									 
*功能: 端口初始化				       									
*参数: 无     		                   									
*返回: 无		                           								
*************************************************************************/	
void Port_Init(void)
{

	//PORTB |= (1 << PB3) | (1 << PB4) |(1 << PB5) | (1 << PB6) | (1 << PB7);
	DDRB |= (1 << PB3) | (1 << PB4) |(1 << PB5) | (1 << PB6) | (1 << PB7);
	PORTD |= (1 << PD3) | (1 << PD4) | (1 << PD5) | (1 << PD6);
	
}

/*************************************************************************
*名称: SPI_MasterInit				 									 
*功能: SPI主机模式初始化				       									
*参数: 无
*返回: 无		                           								
*************************************************************************/		
void SPI_MasterInit(void)
{
	SPCR |= (1 << SPE) | (1 << MSTR);
					//使能SPI 主机模式，设置时钟速率为fck/2
	SPSR |= _BV(SPI2X); //倍速
}
/*************************************************************************
*名称: void SPI_MasterTransmit(uint8_t cData)				 									 
*功能: SPI主机模式传送数据				       									
*参数: cData 要传输的字节数据    		                   									
*返回: SPI接收值		                           								
*************************************************************************/
uint8_t SPI_MasterTransmit(unsigned char cByte)
{
	SPDR = cByte; //* 启动数据传输 
	while(!(SPSR & (1<<SPIF)));//等待传输结束
	return SPDR; //返回SPI接收的数据
}
/*************************************************************************
*名称: LCD_WriteByte
*功能: 往LCD写一字节数据
*参数: cByte 写入数据，cCommand 0指令，1数据
*返回: 无		                           								
*************************************************************************/
void LCD_WriteByte(uint8_t cByte,uint8_t cCommand)
{
    LCD_CE_CLR;
    if(cCommand == 0)
    {
        LCD_DC_CLR;
    }
    else
    {
        LCD_DC_SET;
    }
    SPI_MasterTransmit(cByte);
    LCD_CE_SET;
}
/*************************************************************************
*名称: LCD_Clear
*功能: LCD清屏
*参数: 无
*返回: 无		                           								
*************************************************************************/
void LCD_Clear(void)
{
    uint16_t i;

    LCD_WriteByte(0x80, 0);			
	LCD_WriteByte(0x40, 0);
	LCD_WriteByte(0x80, 0);
    for (i=0; i<504; i++)
    {
        LCD_WriteByte(0x00, 1);
    }		
}
/*************************************************************************
*名称: LCD_Init
*功能: LCD初始化
*参数: 无
*返回: 无		                           								
*************************************************************************/
void LCD_Init(void)
{
    LCD_RST_CLR;
    asm("nop"::);
    asm("nop"::);
    //Delay_MS(1);
    LCD_RST_SET;
    LCD_CE_CLR;
    asm("nop"::);
    asm("nop"::);
    //Delay_MS(1);
    LCD_CE_SET;
    asm("nop"::);
    asm("nop"::);
    //Delay_MS(1);
    LCD_WriteByte(0x21, 0);	// 使用扩展命令设置LCD模式
    LCD_WriteByte(0xc8, 0);	// 设置偏置电压
    LCD_WriteByte(0x06, 0);	// 温度校正
    LCD_WriteByte(0x13, 0);	// 1:48
    LCD_WriteByte(0x20, 0);	// 使用基本命令
    LCD_Clear();   
    LCD_WriteByte(0x0C, 0);	// 设定显示模式，正常显示
    LCD_CE_CLR;
}
/*************************************************************************
*名称: LCD_PutChar
*功能: LCD输出一字符
*参数: x 列0-83, 行0-5, cData输出字符
*返回: 无		                           								
*************************************************************************/
void LCD_PutChar(uint8_t x, uint8_t y, uint8_t cData)
{
    uint8_t *pcData;
    uint8_t i;
	x |= 0x80;
	y |= 0x40; 
    pcData = &Ascii;
	pcData += (cData - 32) * 5; //获取显示数据的位置
	LCD_WriteByte(x, 0);
	LCD_WriteByte(y, 0);
	for(i = 0; i < 5; i++)
	{
		LCD_WriteByte(pgm_read_byte(pcData++), 1);	
	}	
}
/*************************************************************************
*名称: LCD_PutChar
*功能: LCD输出字符串
*参数: x 列0-83, 行0-5, pcBuff输出字符
*返回: 无		                           								
*************************************************************************/
void LCD_PutString(uint8_t x, uint8_t y, uint8_t *pcBuff)
{
    while(*pcBuff)
    {
        LCD_PutChar(x, y, *pcBuff++);
        x +=5;
    }    
}
/************************************************************************				
*函数: LCD_PutHanzi
*功能: 显示一个12*12汉字
*参数: x列地址(0-7), y行地址(0-3)，pcBuff要显示的汉字
*返回: 无
************************************************************************/
void LCD_PutHanzi(uint8_t x, uint8_t y, uint8_t *pcBuff)
{
    uint8_t i;
    uint8_t j;
    HANZI_STRUCT *pcHanzi; 
    uint8_t *pcData;
    pcHanzi = &Hanziku;
    pcHanzi += Ziku_FindHanzi(pcBuff);
    pcData = pcHanzi->data;
	x = 0x80 + x * 12;
	switch(y)
	{
		case 0:
		{
			y = 0x40;
			break;
		}
		case 1:
		{
			y = 0x42;
			break;
		}
		case 2:
		{
			y = 0x44;
			break;
		}
		default: y = 0x40;
	}
	LCD_WriteByte(x, 0);
	LCD_WriteByte(y, 0);
    for(i = 0; i < 2; i++)
    {
    
        for(j = 0; j < 12; j++)
        {
            LCD_WriteByte(pgm_read_byte(pcData++), 1);
            
        }
        y++; //写汉字下半部分
 		LCD_WriteByte(x, 0);
		LCD_WriteByte(y, 0);
        
    }
       
}
/************************************************************************				
*函数: LCD_PutHanziString