貪吃蛇-控制台

本文把遊戲區域就行編号，第一行從0到WIDTH-1，…… 到HEIGHT-1 到 WIDTH*HEIGHT-1(二維數組)。并用trace[LEN]數組儲存snake移動的軌迹（儲存的是數值，數值就能表現出所在的行和列），（trace[0]始終為snake的頭部）,根據display（）函數繪圖，延時，在繪圖，達到重新整理螢幕的效果。

#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 800

enum moveState{
    UP = -*WIDTH, DOWN = WIDTH, LEFT = -, RIGHT = 
};

int x, y;   /* rand point */
int trace[LEN] = {};   /* trace the snake */ 
moveState ms = UP;      /* default UP */
int len = ;    /* 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());
    x = rand()%WIDTH;
    while((y = rand()%HEIGHT) == )     // y != 0
        ;
    trace[] = y*WIDTH + x;
    display();
    randpoint();
    while(){
        keyinput();
    }
    return ;
}

/* 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(,);

    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), |);    // API, set color
    /* display the bound */
    for(i = ; i < HEIGHT+; i++){
        for(j = ; j < WIDTH+; j++){
            if(i ==  || i == HEIGHT+ || j ==  || j == WIDTH+)
                printf("□");   /* 2 char */
            else
                printf("  ");
        }
        printf("\n");
    }

    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), |);    // API, set color

    gotoxy(WIDTH*+, HEIGHT/);
    printf("\t ↑ ← ↓ → space");
    gotoxy(WIDTH*+, HEIGHT/*);
    printf("\t score: %d", len*);

    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), |);    // API, set color
    /* display the rand point */
    gotoxy(*x+, y+);     // include bound
    printf("■");        // 2 char

    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), |);    // API, set color
    /* display the snake */
    for(i = ; i < len; i++){
        gotoxy(trace[i]%WIDTH*+, trace[i]/WIDTH+);
        printf("■");
    }
    Sleep(SPEED);     // delay SPEED ms 
}

/* 根據ms的方向進行移位，儲存新的路徑 */
void automove()
{
    int i;

    /* shift bit  */
    for(i = len-; i > ; i--){
        trace[i] = trace[i-];
    }
    trace[i] += ms;     /* i = 0 */ 
}

/* 合并新的随機點 */
int merge()
{
    int i;
    int temp = y*WIDTH + x;
    if(temp == trace[]){
        /* shift bit  */
        len++;
        for(i = len-; i > ; i--){
            trace[i] = trace[i-];
        }
        trace[i] += ms;         /* i = 0 */
        return ;
    }

    return ;
}

/* born randpoint */
void randpoint()
{
    int i;
    while(){
        x = rand()%WIDTH;
        y = rand()%HEIGHT;
        for(i = ; 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[] <  || trace[] > HEIGHT*WIDTH || trace[]%WIDTH == WIDTH- && ms == LEFT 
                    || trace[]%WIDTH ==  && ms == RIGHT)
            gameover();
        for(i = ; i < len; i++)
            if(trace[] == trace[i])
                gameover();
        if(merge() == )
            randpoint();
        display();
    }

    int key = getch();      //擷取鍵盤輸入 
    if(key == )
        exit();
    else if(key == ' '){    // space for Pause
        while(getch() != ' ')
            ;
    }
    else if(key == ){   //方向鍵會産生2個字元 
        key = getch();
        switch(key){
            case :  //up
                ms = UP;        
                break;
            case :  //left
                ms = LEFT;
                break;
            case :  //right
                ms = RIGHT;
                break;
            case :  //down
                ms = DOWN;
                break;
        }
    }

    automove();
    /* judge out of the bound */
    if(trace[] <  || trace[] > HEIGHT*WIDTH || trace[]%WIDTH == WIDTH- && ms == LEFT 
                    || trace[]%WIDTH ==  && ms == RIGHT)
        gameover();
    /* judge head touched the body */
    for(i = ; i < len; i++)
        if(trace[] == trace[i])
            gameover();
    if(merge() == )
        randpoint();
    display();
}

void gameover()
{
    gotoxy(WIDTH/, HEIGHT/);
    printf("you are lost!\n");
    gotoxy(, HEIGHT+);
    exit();
}