Elevator, C++ (gcc)

Elevator

//Title of this code

#include <iostream>
#include <list>
#include <stdlib.h>

using namespace std;

struct Request {
    int curLevel;
    int destLevel;
    
    Request(int cur, int dest) : curLevel(cur), destLevel(dest) {}
};

class Elevator {
 
    int id;
    int curLevel;
    list<int> levelsToReach;
    
  public:
    
    Elevator(int i, int level) : id(i), curLevel(level) {}
    
    int getCurLevel() {
        return curLevel;
    }
    
    int getDirection() {
        //  -1,0,1
        return 0;
    }
    
    bool isDirectionGood(Request& request) {
        // depends on requester level and requested level
        return true;
        
    }
    
    void addNewRequest(Request& request) {
        
        // not good need to be ordered , no duplicates
        levelsToReach.push_back(request.curLevel);
        levelsToReach.push_back(request.destLevel);
    }
    
    void move() {
        
        if (!levelsToReach.empty()) {
            auto lit = levelsToReach.begin();
        
            // we reached a destination level
            if (curLevel == *lit && ++lit != levelsToReach.end()) {  // not sure its ok
                levelsToReach.erase(levelsToReach.begin());   
            }

if (!levelsToReach.empty()) {
                if (curLevel < *lit)
                    ++curLevel;
                else
                    --curLevel;           
            } 
        }
    }
    
};

class ElevatorControl {
  
    list<Elevator> elevators;
    list<Request> requests;
    
    int numElevators;
    int numLevels;
    
  public:
    
    ElevatorControl(int numOfElevators, int maxLevel) {
        
        numLevels = maxLevel;
        numElevators = numOfElevators;
        
        // Set the Elevators
        for (int i = 0; i < numElevators; ++i)
            elevators.push_back(Elevator(i, 0)); // optimize level to reach (maxLevel/numOfElevators) * i

}
    
    
    void step() {
        
        for (auto rit = requests.begin(); rit != requests.end(); ++rit) {
            
            int requestLevel = rit->curLevel;
            auto bestElevator = elevators.begin();
            
            for (auto eit = elevators.begin(); eit != elevators.end(); ++eit) {
            
                //if 0 optimize
                if (eit->isDirectionGood(*rit) && abs(requestLevel - eit->getCurLevel()) < abs(requestLevel - bestElevator->getCurLevel()) )
                    bestElevator = eit;
            }
                    
            bestElevator->addNewRequest(*rit);
            
        }
                    
        requests.erase(requests.begin(), requests.end());
                    
        
        // here do something smart thing with elevators
        
                    
        for (auto eit = elevators.begin(); eit != elevators.end(); ++eit) 
            eit->move();
                    
    }
         
    
    void addRequest(int floor, int destination) {
        
        requests.push_back(Request(floor, destination));
        
    }
    
                    
    void printStatus() {
     
        for (int level = numLevels - 1; level >= 0; --level) {
            
            for (auto eit = elevators.begin(); eit != elevators.end(); ++eit) {
                if (eit->getCurLevel() == level)
                    cout << "#";
                else
                    cout << ".";
            }
            cout << endl;
        }
        cout << endl;
    }
    
};

int main()
{
    
    ElevatorControl ec(5,4);
    ec.addRequest(2,3);
    ec.printStatus();
    ec.step();
    ec.printStatus();
    ec.step();
    ec.printStatus();
    ec.step();
    ec.printStatus();
    std::cout << "Hello, world!\n";
}


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