控制台版贪吃蛇

simple_snake_game.cpp

#include <iostream>
#include <stdlib.h>
#include <conio.h>
using namespace std;
enum eDirection { STOP, UP, LEFT, RIGHT, DOWN };
eDirection dir;
bool gameOver;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
int tailX[100], tailY[100];
int nTail;
void Setup()
{
    gameOver = false;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
    dir = STOP;
    nTail = 1;
    tailX[0]=x;
    tailY[0]=y;
}
void Draw()
{
    system("cls"); // system("clear")
    for(int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;

    for(int i = 0; i < height; i++) {
        for(int j = 0; j < width; j++) {
            if(j == 0)
                cout << "#";
            
            if (j==tailX[0] && i==tailY[0]) {
                cout << "O";
            }
            else if(j == fruitX && i == fruitY)
                cout << "F";
            else {
                bool hasBlock = false;
                for (int m=1;m<nTail;m++) {
                    if (j==tailX[m] && i==tailY[m]) {
                        hasBlock = true;
                        cout << "o";
                        break;
                    }
                }
                if (!hasBlock)
                    cout << " ";
            }
                
            if(j == width - 1)
                cout << "#";
        }
        cout << endl;
    }

    for(int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;
    cout << score << endl;
}
void Input()
{
    if(_kbhit()) {
        switch(_getch()) {
        case 'w':
            dir = UP;
            break;
        case 'a':
            dir = LEFT;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'x':
            gameOver = true;
            break;
        }
    }
}
void Logic()
{
    int prevX=x, prevY=y;
    int tmpX,tmpY;
    switch(dir) {
    case UP:
        y--;
        break;
    case LEFT:
        x--;
        break;
    case DOWN:
        y++;
        break;
    case RIGHT:
        x++;
        break;
    default:
        break;
    }

    if(x <= 0 || x >= width - 1)
        x = (x + width) % width;
    if(y <= 0 || y >= height - 1)
        y = (y + height) % height;
        
    if (prevX!=x || prevY!=y) {
        tmpX=tailX[nTail-1];
        tmpY=tailY[nTail-1];
        for (int i=nTail-1;i>0;i--) {
            tailX[i]=tailX[i-1];
            tailY[i]=tailY[i-1];
        }
        tailX[0]=x;
        tailY[0]=y;
    }

    if(x == fruitX && y == fruitY) {
        tailX[nTail]=tmpX;
        tailY[nTail]=tmpY;
        nTail++;
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
    }
}

int main(int argc, char** argv)
{
    Setup();
    while(!gameOver) {
        Draw();
        Input();
        Logic();
    }

    return 0;
}