Game.cpp

#include <iostream>
#include <conio.h>
using namespace std;
bool gameOver;
const int width = 20;
const int height = 20;
int x, y, x0, y0, fruitX, fruitY, score1, score2;
int tailX[100], tailY[100];
int nTail;
enum eDirection {STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirection dir;
void Setup()
{
    gameOver = false;
    dir = STOP;
    x = width/2;
    y = height/2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score1 = 0;
    score2 = 0;
}
void Draw()
{
    system("cls"); //clears the screen
    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( i== y && j== x)
                cout<<"0";
            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 << " ";
            }

            if(j== width - 1)
                cout << "#";
        }
        cout << endl;
    }

    for(int i = 0; i < width+2;i++)
    cout << "#";
    cout << endl;
    cout << "Score: " << score1 <<endl;
}
void Input()
{
    if(_kbhit())
    {
        switch(_getch())
        {
            case 'a':
                dir = LEFT;
                break;
            case 'd':
                dir = RIGHT;
                break;
            case 's':
                dir = DOWN;
                break;
            case 'w':
                dir = UP;
                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)   if i wanna end the game on hitting the wall
      //  gameOver = true;
    if(x>=width)
    x=0;
    else if(x<0)
    x=width-1;
    if(y>=height)
    y=0;
    else if(y<0)
    y=height-1;
    for(int i=0;i<nTail;i++)
        if(tailX[i] == x && tailY[i] == y)
        gameOver = true;
    if(x == fruitX && y == fruitY)
        {
            score1 = score1+10;
            fruitX = rand()%width;
            fruitY = rand()%height;
            nTail++;
        }
}
int main()
{
    Setup();
    while(!gameOver)
    {
        Draw();
        Input();
        Logic();
        sleep(10);
    }
    
    return 0;
}