贪吃蛇-控制台

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本文把游戏区域就行编号，第一行从0到WIDTH-1，…… 到HEIGHT-1 到 WIDTH*HEIGHT-1(二维数组)。并用trace[LEN]数组保存snake移动的轨迹（保存的是数值，数值就能表现出所在的行和列），（trace[0]始终为snake的头部）,根据display（）函数绘图，延时，在绘图，达到刷新屏幕的效果。

贪吃蛇-控制台

#include <stdio.h>#include <stdlib.h>#include <windows.h>#include <time.h>#include <conio.h>#define HEIGHT 10#define WIDTH 10#define LEN HEIGHT*WIDTH/2#define SPEED 800enum moveState{    UP = -1*WIDTH, DOWN = WIDTH, LEFT = -1, RIGHT = 1};int x, y;   /* rand point */int trace[LEN] = {0};   /* trace the snake */ moveState ms = UP;      /* default UP */int len = 1;    /* snake length */void display();void gotoxy(int x, int y);void automove();void randpoint();void gameover();void keyinput();int merge();int main(void){    srand(time(0));    x = rand()%WIDTH;    while((y = rand()%HEIGHT) == 0)     // y != 0        ;    trace[0] = y*WIDTH + x;    display();    randpoint();    while(1){        keyinput();    }    return 0;}/* goto (x, y) point oisition */void gotoxy(int x, int y){    HANDLE hOut;    COORD pos={x, y};   // windows API, 光标位置     hOut=GetStdHandle(STD_OUTPUT_HANDLE);    SetConsoleCursorPosition(hOut,pos);     // set  //SetConsoleTextAttribute(hOut,0x00|0x05);}void display(){    int i, j;    gotoxy(0,0);    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0x00|0x05);    // API, set color    /* display the bound */    for(i = 0; i < HEIGHT+2; i++){        for(j = 0; j < WIDTH+2; j++){            if(i == 0 || i == HEIGHT+1 || j == 0 || j == WIDTH+1)                printf("□");   /* 2 char */            else                printf("  ");        }        printf("\n");    }    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0x00|0x06);    // API, set color    gotoxy(WIDTH*2+4, HEIGHT/3);    printf("\t ↑ ← ↓ → space");    gotoxy(WIDTH*2+4, HEIGHT/5*3);    printf("\t score: %d", len*100);    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0x00|0x07);    // API, set color    /* display the rand point */    gotoxy(2*x+2, y+1);     // include bound    printf("■");        // 2 char    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0x00|0x02);    // API, set color    /* display the snake */    for(i = 0; i < len; i++){        gotoxy(trace[i]%WIDTH*2+2, trace[i]/WIDTH+1);        printf("■");    }    Sleep(SPEED);     // delay SPEED ms }/* 根据ms的方向进行移位，保存新的路径 */void automove(){    int i;    /* shift bit  */    for(i = len-1; i > 0; i--){        trace[i] = trace[i-1];    }    trace[i] += ms;     /* i = 0 */ }/* 合并新的随机点 */int merge(){    int i;    int temp = y*WIDTH + x;    if(temp == trace[0]){        /* shift bit  */        len++;        for(i = len-1; i > 0; i--){            trace[i] = trace[i-1];        }        trace[i] += ms;         /* i = 0 */        return 1;    }    return 0;}/* born randpoint */void randpoint(){    int i;    while(1){        x = rand()%WIDTH;        y = rand()%HEIGHT;        for(i = 0; i < len; i++)            if(y*WIDTH+x == trace[i])                break;        if(i == len)            return;    }}void keyinput(){    int i;    while(!kbhit()){    // no keyboard input        automove();        if(trace[0] < 1 || trace[0] > HEIGHT*WIDTH || trace[0]%WIDTH == WIDTH-1 && ms == LEFT                     || trace[0]%WIDTH == 0 && ms == RIGHT)            gameover();        for(i = 1; i < len; i++)            if(trace[0] == trace[i])                gameover();        if(merge() == 1)            randpoint();        display();    }    int key = getch();      //获取键盘输入     if(key == 27)        exit(0);    else if(key == ' '){    // space for Pause        while(getch() != ' ')            ;    }    else if(key == 0xE0){   //方向键会产生2个字符         key = getch();        switch(key){            case 0x48:  //up                ms = UP;                        break;            case 0x4B:  //left                ms = LEFT;                break;            case 0x4D:  //right                ms = RIGHT;                break;            case 0x50:  //down                ms = DOWN;                break;        }    }    automove();    /* judge out of the bound */    if(trace[0] < 1 || trace[0] > HEIGHT*WIDTH || trace[0]%WIDTH == WIDTH-1 && ms == LEFT                     || trace[0]%WIDTH == 0 && ms == RIGHT)        gameover();    /* judge head touched the body */    for(i = 1; i < len; i++)        if(trace[0] == trace[i])            gameover();    if(merge() == 1)        randpoint();    display();}void gameover(){    gotoxy(WIDTH/2, HEIGHT/2);    printf("you are lost!\n");    gotoxy(0, HEIGHT+2);    exit(0);}

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