#include <cstdlib>
#include <iostream>
#include <math.h>
#include <ctime>
#include <stdio.h>
#include <windows.h>
#include <conio.h>


using namespace std;
int ppos,bh,b,dir,i,num;
int sizey,sizex;
char key;

int getrand(int min,int max){
     return(rand()%(max-min)+min);
}




void line(int m,int b)
{
     if (m==1)
     {
              cout << "|";
     } else if (m==0)
     {
            cout << " " ;
     }
     for (i=0;i<b-1;i++)
     {
         cout << " ";
     }
     cout << "x" ;
     for (i=0;i<18-b;i++)
     {
         cout << " ";
     }  
     cout << "|" << endl;
 }


void print(int ppos,int bh,int b)
{
     cout << "--------------------" << endl;
     if (ppos>bh)
        {
              for (i=0;i<5-ppos;i++)
              {
                  cout << "                   |" << endl;
              }   
              cout << "|                  |" << endl;
              for (i=0;i<ppos-bh-1;i++)
              {
                  cout << "                   |" << endl;
              }
              line(0,b);
              for (i=0;i<bh-1;i++)
              {
               cout << "                   |" << endl;
              }
        } else if (ppos==bh)
        {
              for (i=0;i<5-ppos;i++)
              {
                  cout << "                   |" << endl;
              }   
              line(1,b);
              for (i=0;i<ppos-1;i++)
              {
               cout << "                   |" << endl;
              }
        } else if (ppos<bh)
        {
              for (i=0;i<5-bh;i++)
              {
                  cout << "                   |" << endl;
              }   
              line(0,b);
              for (i=0;i<bh-ppos-1;i++)
              {
                  cout << "                   |" << endl;
              }
              cout << "|                  |" << endl;
              for (i=0;i<ppos-1;i++)
              {
               cout << "                   |" << endl;
              }
        }
     cout << "--------------------" << endl;
 }

void newrand()
{
       srand(time(0));
        dir = getrand (1,4); 
}

void r (){
       srand(time(0));
        dir = getrand (1,4);  
    ppos=3;
    bh=3;
    b=10;
    sizex=20;
    sizey=5;
}

 int menu(int m,int ppos, int bh, int b){
     if (m==0){
               print(ppos,bh,b);
     } else if (m==1){
            system("cls");
            print(ppos,bh,b);
            }
 }




int main()
{
    if (dir==0){
     r();
     }
    system("cls");

    if (dir==1){
               b=b+1;
    } else if (dir==-1){
           b=b-1;
           } else if (dir==2){
                  bh=bh+1;
                  b=b+1;
                  } else if (dir==-2){
                         bh=bh+1;
                         b=b-1;
                         } else if (dir==3){
                                bh=bh-1;
                                b=b+1;
                                } else if (dir==-3){
                                       bh=bh-1;
                                       b=b-1;
                                       } else {
                                              cout << " no direction" << endl;
                                              }
    if (b==sizex-2){
               newrand();
               dir=dir*-1;
               }
    if ((b==1) && (bh==ppos)) {
              dir=dir*-1;
              } else if ((b==1)&&(bh!=ppos)){
                     cout << " Game Over" << endl;
                     cout << "Press any key to exit" << endl;
                     key=getch();
                     return EXIT_SUCCESS;
                     }
    if (bh>=sizey||bh==1){
               if (dir==2){
                           dir=3;
                           } else if (dir==-2){
                                  dir=-3;
                                  } else if (dir==3){
                                         dir=2;
                                         } else if (dir==-3){
                                                dir=-2;
                                                }
                                                }
       print(ppos,bh,b);
    cout << "ppos = " << ppos << " ; bh = " << bh << " b = " << b << endl; 

    
if (kbhit())
{
   key=getch();
    if (key=='w') {
       if (ppos<5){
       ppos=ppos+1;
       menu(0,ppos,bh,b);
       }
       } else if (key=='s'){
       if (ppos>1){
       ppos=ppos-1;
       menu(0,ppos,bh,b);
       }
       }
}
    Sleep(1000);
    main();
    
    
    return EXIT_SUCCESS;
}