Problem calling a method

[ToeJam]

So basically I am trying to use an Opoly2 method (reset()) in OpolyPanel, but I cannot figure out how to implement it. I bolded the line of confusion. Honestly I just have no idea what to do with it any help is appreciated, thanks.

import javax.swing.*;
import java.awt.*;


public class GopolyDriver{
  public static void main(String[] args){
    DisplayWindow d = new DisplayWindow();
    JMenuBar menuBar = new JMenuBar();
    d.setJMenuBar(menuBar);
    OpolyPanel p = new OpolyPanel(menuBar);
    d.addPanel(p);
    d.showFrame();
  }
}

public class Opoly2{
 private int boardSize;
 private int pos = 0;
private int steps = 0;
private int reward = 10;

 public Opoly2(int boardSize){
   this.boardSize=boardSize;
 }
 
 public int getPos(){return pos;}
 public int getSteps(){return steps;}
 public int getReward(){return reward;}
 public int getBoardSize(){return boardSize;}
 
 public void reset(){
   // resets game for another start
   pos = 0;
   steps = 0;
   reward = 10;
 }

 public int spin(){
   // gives a random spin 1-5
   int p=(1+(int)(Math.random()*5));
   return p;
 }

 public void move(int p){
   // rules for advancing board piece
   steps++;
   if  (pos + p > boardSize) return;
   if(pos+p == boardSize-1){
     reward=reward/3;
     pos=0;
   }
   else if (pos + p == boardSize)
   {pos = pos + p; return;}
   else{
     pos = pos + p;
     if(pos%4==0) reward = 2*reward;
   }
 }
 
 public boolean isGameOver(){
   // game over when piece equals board size exactly
   return (pos==boardSize);
 }

 public void spinAndMove(){
   // does a spin, then move
   int p=spin();
   move(p);
 }

 public void drawBoard(){
   // a crude drawing of the board; shows current reward
   for(int j=0; j<boardSize; j++){
     if(j!=pos){
       System.out.print("*");}
     else{
       System.out.print("o");}
   }
   if (pos == boardSize)System.out.print("o");
   System.out.println(" " + reward);
 }

 public void playGame(){
   // top level play of game; play continues until game over (duh!)
   System.out.println("Board Size: " + boardSize);
     drawBoard();
   while (isGameOver()==false){
    spinAndMove();
    drawBoard();
   }
   System.out.println("game over");
   System.out.println("rounds of play: " + steps);
   System.out.println("final reward: " + reward);
          }
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class OpolyPanel extends JPanel implements ActionListener{
  JMenuBar b;
  JMenu menu = new JMenu("Actions");
  JMenuItem newGame = new JMenuItem("NewGame");
  JMenuItem quit = new JMenuItem("Quit");
  
  public OpolyPanel(JMenuBar bar){
    this.b = bar;
    b.add(menu);
    menu.add(newGame);
    menu.add(quit);
    newGame.addActionListener(this);
    quit.addActionListener(this);
    setBackground(Color.white);
  }
  public void actionPerformed(ActionEvent e){
 [SIZE="4"][B]   if (e.getSource() == newGame) this.reset();[/B][/SIZE]
    if (e.getSource() == quit) System.exit(0);
  }
}

import java.awt.*;
import javax.swing.*;
public  class DisplayWindow extends JFrame{

  private Container c;

  public DisplayWindow(){
    super("Display");
    c = this.getContentPane();
  }

  public void addPanel(JPanel p){
    p.setPreferredSize(new Dimension(500,400));
    c.add(p);
  }

  public void showFrame(){
    this.pack();
    this.setVisible(true);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}

[JosAH]

Methods are called 'on' objects, i.e. you have to call the reset() method 'on' an Opoly2 object. Your panel needs a reference to such an object to call that method on. Your panel should 'have' such a reference which it doesn't.

kind regards,

Jos

[ToeJam]

What do you mean by reference? Like create an object in Opoly2 and use thatObject.reset()? or do I have to do something like set an object in Opoly2 = to one in Panel. In this case being Opoly2.reset()?

[JosAH]

What do you mean by reference? Like create an object in Opoly2 and use thatObject.reset()? or do I have to do something like set an object in Opoly2 = to one in Panel. In this case being Opoly2.reset()?

I mean your panel needs to have an Opology2 object somewhere to call the reset() method on.

kind regards,

Jos

[ToeJam]

ah yes that makes sense thanks for clearing that up. I would love to test this, but I cannot seem to create the Opoly2 board = new Opoly2(); correctly.

cannot find symbol
symbol : constructor Opoly2()
location: class Opoly2

From

public Opoly2(int boardSize){
this.boardSize=boardSize;
}

Any idea on that one? :/

[Fubarable]

The Opoly2 class has one constructor that takes an int as its parameter. Are you calling the constructor with the correct type of parameter?