Snake.cpp

#include <cstdlib>
#include<iostream>
#include<conio.h>
#include<windows.h>
using namespace std;
bool gameover;
const int width=20;
const int height=20;
int x,y,fruitx,fruity,score;
int tailx[100],taily[100];
int ntail;
enum edir{ stop=0,LEFT,RIGHT,UP,DOWN};
edir dir;
void setup(){
    gameover=false;
    dir=stop;
    x=width/2;
    y=height/2;
    fruitx=rand()%width;
    fruity=rand()%height;
    score=0;

}
void draw(){
    system("cls");
    for(int i=0;i<width+1;i++){
        cout<<"*";
    }
    cout<<endl;
    for(int i=0;i<height;i++){
        for(int j=0;j<width;j++){
            if(j==0)cout<<"*";
            if(i==y && j==x)cout<<"o";
            else if(i==fruity && j==fruitx)cout<<"f";
            else{
                    bool print=false;
                for(int k=0;k<ntail;k++){

                    if(tailx[k]==j&&taily[k]==i){
                        cout<<"o";
                        print=true;
                    }

                }
            if(!print)cout<<" ";
                       }
    //cout<<" ";

            if(j==width-1)cout<<"*";
        }
        cout<<endl;
    }
     for(int i=0;i<width+1;i++){
        cout<<"*";
    }
    cout<<endl;
}
void input(){
    if(_kbhit()){
        switch(_getch()){
    case 'a':
        dir=LEFT;
        break;

    case 'd':
        dir=RIGHT;
        break;
    case 'w':
        dir=UP;
        break;
    case 's':
        dir=DOWN;
        break;
    case 'x':
        gameover=true;
        break;
    }
}
}
void logic(){
    int prevx=tailx[0];
    int prevy=taily[0];
    int prev2x,prev2y;
    tailx[0]=x;
    taily[0]=y;
    for(int i=1;i<ntail;++i){
        prev2x=tailx[i];
        prev2y=taily[i];
        tailx[i]=prevx;
        taily[i]=prevy;
        prevx=prev2x;
        prevy=prev2y;
    }
    switch(dir){
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;

    case DOWN:
        y++;
        break;

    default:
        break;

    }
    if(x>width || x<0||y>height || y<0)gameover=true;
    for(int i=0;i<ntail;i++)
            if(tailx[i]==x&&taily[i]==y)gameover=false;
    if(x==fruitx && y==fruity){

    score+=10;
    fruitx=rand()%width;
    fruity=rand()%height;
    ntail++;
    }
}
int main(){
    setup();
    while(!gameover){
        draw();
        input();
        logic();
        Sleep(50);
    }
    return 0;
}