基于51单片机的贪吃蛇游戏设计_经典贪吃蛇小游戏

#include <reg52.h>

// 点阵寄存器定义
sbit LOAD = P1 ^ 0;
sbit CLK = P1 ^ 1;
sbit DATA = P1 ^ 2;

sbit mKey4 = P3 ^ 4;
sbit mKey5 = P3 ^ 5;
sbit mKey6 = P3 ^ 6;
sbit mKey7 = P3 ^ 7;
// 数码管寄存器定义
sbit DLE = P2 ^ 6;
sbit WLE = P2 ^ 7;

unsigned long timeNumber = 0;

unsigned char digits[] = { 
   
0x3f, 0x06, 0x5b, 0x4f, 0x66,
0x6d, 0x7d, 0x07, 0x7f, 0x6f };

void digitInit() { 
   
	P0 = 0x00;
	DLE = 1;
	DLE = 0;
	P0 = 0xff;
	WLE = 1;
	WLE = 0;
}

void showNumber(unsigned long number) { 
   
	unsigned char dTem;
	if(number == 0) { 
   
		P0 = digits[0];
		DLE = 1;
		DLE = 0;
		P0 = ~0x20;
		WLE = 1;
		WLE = 0;
	}
	else { 
   
		for (dTem = 0x20; (dTem != 0) && (number != 0); dTem >>= 1) { 
   
			P0 = digits[number % 10];
			DLE = 1;
			DLE = 0;
			P0 = ~dTem;
			WLE = 1;
			WLE = 0;
			number /= 10;
		}
	}
}

void showDigit(unsigned char digit, unsigned char position) { 
   
	P0 = digits[digit];
	DLE = 1;
	DLE = 0;
	P0 = ~(0x01 << position);
	WLE = 1;
	WLE = 0;
}

// 将数据写入点阵中一行
#define LATTICE_LINE_WRITE(DATA, LINE) latticeWriteData(~(DATA), 0x0001 << (LINE))
// 将数据写入点阵中一列
#define LATTICE_LIST_WRITE(DATA, LIST) latticeWriteData(~(0x0001 << (LIST)), DATA)

/* 功能 ：将数据写入点阵寄存器 参数 ：<unsigned int>列寄存器<unsigned int>行寄存器 返回值 ：<void> 详细信息：列寄存器将被先写入，行寄存器随后 */
void latticeWriteData(unsigned int lineData, unsigned int listData) { 
   
	unsigned char i;
	for (i = 0; i < 16; i++) { 
   
		DATA = lineData & 0x8000;
		lineData <<= 1;
		CLK = 1;
		CLK = 0;
	}
	for (i = 0; i < 16; i++) { 
   
		DATA = listData & 0x8000;
		listData <<= 1;
		CLK = 1;
		CLK = 0;
	}
	LOAD = 1;
	LOAD = 0;
}

unsigned int temFunction(char tData[16]) { 
   
	unsigned int result = 0;
	char i;
	for(i = 15; i >= 0; i--) { 
   
		result <<= 1;
		result |= (tData[i] > 0) | (tData[i] == -1);
	}
	return result;
}

/* 功能 ：主函数 参数 ：<void> 返回值 ：<void> */
void main() { 
   
	xdata char map[16][16] = { 
    0 };
	unsigned char direction = 1, x = 0, y = 0, length = 3, i, j;
	unsigned long systemCD = 0, keyCD = 0, foolCD = 0;
	TMOD = 0x01;
	TH0 = (65535 - 10000) / 256;
	TL0 = (65535 - 10000) % 256;
	EA = 1;
	ET0 = 1;
	TR0 = 1;
	P0 = P1 = P2 = 0;
	P3 = 0xff;
	map[x][y] = length;
	while (1) { 
   
		if(timeNumber - systemCD >= 40 - length) { 
   
			
			switch(direction) { 
   
				case 0:
					if(x == 0)x = 15;
					else x--;
					break;
				case 1:
					if(x == 15)x = 0;
					else x++;
					break;
				case 2:
					if(y == 0)y = 15;
					else y--;
					break;
				case 3:
					if(y == 15)y = 0;
					else y++;
					break;
			}
			if(map[x][y] > 0) break;
			else if(map[x][y] == -1) { 
   
				length++;
			}
			else { 
   
				for(i = 0; i < 16; i++) { 
   
				for(j = 0; j < 16; j++) { 
   
					if(map[i][j] > 0)map[i][j]--;
				}
			}
			}
			map[x][y] = length;
			systemCD = timeNumber;
		}
		if(timeNumber - foolCD >= 1000) { 
   
			map[(timeNumber - systemCD) % 16][(timeNumber - keyCD) % 16] = -1;
			foolCD = timeNumber;
		}
		if(timeNumber - keyCD >= 25) { 
   
			if((P3 & 0xf0) != 0xf0) { 
   
				if(mKey4 == 0)direction = 0;
				else if(mKey5 == 0)direction = 1;
				else if(mKey6 == 0)direction = 2;
				else if(mKey7 == 0)direction = 3;
				keyCD = timeNumber;
			}
		}
		
		for(i = 0; i < 16; i++) { 
   
			LATTICE_LINE_WRITE(temFunction(map[i]), i);
		}
		showNumber((1000 - timeNumber % 1000)/100);
	}
}

void allInit() { 
   
	digitInit();
	latticeInit();
}

void T0_Time() interrupt 1 { 
   
	TH0 = (65535 - 10000) / 256;
	TL0 = (65535 - 10000) % 256;
	timeNumber++;
}

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