#include <iostream>
#include <cstdlib>
using namespace std;
#include "robot.h"

void robot::turnLeft(){
  energy--;
  direction = (direction + 3) % 4; // a left is 3 rights
}
void robot::turnRight(){
  energy--;
  direction = (direction + 1) % 4;
}
void robot::forward(int &x,int &y){
  energy -= 2;
  if(direction == 0)
    y--;
  if(direction == 2)
    y++;
  if(direction == 1)
    x++;
  if(direction == 3)
    x--;
}

robot::robot(int id){
  energy = 50;
  ID=id;
  moved = 0;
  direction = 0;
}
void robot::draw(){
   cout << "#";
}
 void robot::print(){
   cout<<"Robot "<<ID<<": Energy = "<<energy<< "   Direction = "<<direction;
 }
 void robot::move(int &x,int &y){
   if(moved == 1)
     return;
   switch(rand()%4){
   case 0:
     turnLeft();
     break;
   case 1:
     turnRight();
     break;
   case 2:
   case 3:
     forward(x,y);
     break;
   default:
     cout << "Error in robot move." << endl;
   }
   moved = 1;
 }