Thread: Won't load next class...

Okay, so I'm making a small game in which you have to go through a maze and get to the end to get to the next level. So far I have 2 levels and both work when set to be played. What I can't seem to get to work is when level1 is finished, loading level two. Both levels work when they are set to true, it's just switching between them while the program is running that I can't seem to do.

Here's the Board class, if you want any more code if you think that could help, just ask.
(I know some of my methods may not be the most efficient, but this is my first actual program without tutorials etc.)

package maze;
 
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
 
import java.util.ArrayList;
 
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
 
 
import maze.Level1;
import maze.Player;
 
 
 
public class Board extends JPanel implements ActionListener {
 
 
	private Image wall;
 
 
	private int B_WIDTH;
    private int B_HEIGHT;
 
 
	private Timer timer;
	private Player player;
 
 
	boolean level1 = true;
	boolean level2 = false;	
 
	Level1 level1Obj = new Level1();
	Level2 level2Obj = new Level2();
 
 
	 public Board() {
 
 
		 ImageIcon ii = new ImageIcon(this.getClass().getResource("wall.png"));
	    	wall = ii.getImage();
 
		 addKeyListener(new TAdapter());
		 player = new Player();
 
 
		 if(level1){
		 if(level1Obj.wallUp){
				player.level1wall = true;
			}
		if(level1Obj.wallUp==false){
					player.level1wall = false;
				}
		 }
 
		 timer = new Timer(5, this);
	        timer.start();
 
	     if(level1Obj.wallUp){
	    	 player.level1collision();
	     }
 
	    setFocusable(true);
	    setBackground(Color.DARK_GRAY);
	    setDoubleBuffered(true);
	    setSize(400, 300);
 
 
	}
 
	 public void addNotify() {
	        super.addNotify();
	        B_WIDTH = getWidth();
	        B_HEIGHT = getHeight();   
	    }
 
 
 
	public void paint(Graphics g) 
	{
		super.paint(g);			
		Graphics2D g2d = ( Graphics2D )g; 
 
 
 
 
			if(level1){
 
				level1Obj.paintComponent(g);
 
			}
 
 
			if(level2){
 
				level2Obj.paintComponent(g);
 
			}
		for(int i = 0; i <= 18; i++){
 
			g2d.drawImage(wall, i*30, 0, this);
    		g2d.drawImage(wall, i*30, 540, this);
    		g2d.drawImage(wall, 0, i*30, this);
    		g2d.drawImage(wall, 570, i*30, this);
		}
 
 
		g2d.drawImage(player.getImage(), player.getX(), player.getY(), this);
 
		Toolkit.getDefaultToolkit().sync();
 
 
	}
	public void actionPerformed(ActionEvent e) {
		player.move();
        player.collision();
        collision();
        repaint();  
 
    }
 
 
	public void collision(){
		Rectangle r1 = player.getBounds();
 
		if(level1){
			Rectangle r2 = level1Obj.getBounds();
 
			Rectangle r3 = level1Obj.getBounds1();
			Rectangle r4 = level1Obj.getBounds2();
 
			if(r1.intersects(r2)){
				level1Obj.wallUp = false;
 
			}
			if(r1.intersects(r3)){
				if(level1Obj.wallUp){
					player.dx = 0;
					player.rightTrue = false;
				}
			}
 
			if(r1.intersects(r4)){
				player.x = 40;
				player.y = 500;
				level1=false;
				level2 = true;
 
 
 
 
 
			}
 
 
		}
 
		if(level2==true){
 
			Rectangle r5 = level2Obj.getBounds();
			Rectangle r6 = level2Obj.getBounds1();
			Rectangle r7 = level2Obj.getBounds2();
			Rectangle r8 = level2Obj.getBounds5();
			Rectangle r9 = level2Obj.getBounds7();
 
			Rectangle b1 = level2Obj.getBounds3();
			Rectangle b2 = level2Obj.getBounds4();
			Rectangle b3 = level2Obj.getBounds6();
 
			Rectangle e = level2Obj.getBounds8();
 
			if(r1.intersects(r5) || r1.intersects(r6)){
					player.level2collision();
			}
			if(level2Obj.button1){
				if(r1.intersects(r7)){
					player.dy = 0;
					player.upTrue = false;
				}
			}
			if(r1.intersects(b1)){
				level2Obj.button1 = false;
			}
			if(level2Obj.button2){
				if(r1.intersects(r8)){
					player.level2collision();
				}
			}
			if(r1.intersects(b2)){
				level2Obj.button2 = false;
			}
			if(level2Obj.button3){
				if(r1.intersects(r9)){
					player.level2collision();
				}
			}
			if(r1.intersects(b3)){
				level2Obj.button3 = false;
			}
			if(r1.intersects(e)){
				level2 = false;
				player.x = 40;
				player.y = 500;
			}
 
		}
	}
 
 
 
	private class TAdapter extends KeyAdapter {
 
        public void keyReleased(KeyEvent e) {
            player.keyReleased(e);
        }
 
        public void keyPressed(KeyEvent e) {
            player.keyPressed(e);
        }
    }
 
}

Thanks for any help!

I will try the adding some print statements.

The main method is in a seperate class which then calls this class.

Originally Posted by Huw

The main method is in a seperate class which then calls this class.

Each class could(should) have its own main method, even if it was there just for testing the class

Originally Posted by jps

Each class could(should) have its own main method, even if it was there just for testing the class

If they all had main methods, how would the program know which to run, or am I just being stupid here?
I don't know alot about java since I've learnt on the Internet using different tutorials etc.

I've added a main method to the class, but I still don't see how I'm going to get the class to 'restart' but with level2 true, I'm sorry if I seem really stupid with these questions.

I think I've found that its the paint method which isn't being called again after level2 is true.

Here's all the code:

Maze:

package maze;
 
import javax.swing.JFrame;
 
public class Maze extends JFrame {
 
    public Maze() {
 
    	add(new Board());
 
 
    		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		setSize(600, 600);
    		setLocationRelativeTo(null);
    		setTitle("Maze");
 
    		setResizable(false);
    		setVisible(true);
 
 
 
 
 
 
 
 
    }
 
    public static void main(String[] args) {
 
    		new Maze();
 
 
    }
}

Board

package maze;
 
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
 
import java.util.ArrayList;
 
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
 
 
import maze.Level1;
import maze.Player;
 
 
 
public class Board extends JPanel implements ActionListener {
 
 
	private Image wall;
 
 
	private int B_WIDTH;
    private int B_HEIGHT;
 
 
	private Timer timer;
	private Player player;
 
 
	boolean level1 = true;
	boolean level2 = false;	
 
	Level1 level1Obj = new Level1();
	Level2 level2Obj = new Level2();
 
 
	 public Board() {
 
 
		 ImageIcon ii = new ImageIcon(this.getClass().getResource("wall.png"));
	    	wall = ii.getImage();
 
		 addKeyListener(new TAdapter());
		 player = new Player();
 
 
		 if(level1){
		 if(level1Obj.wallUp){
				player.level1wall = true;
			}
		if(level1Obj.wallUp==false){
					player.level1wall = false;
				}
		 }
 
		 timer = new Timer(5, this);
	        timer.start();
 
	     if(level1Obj.wallUp){
	    	 player.level1collision();
	     }
 
	    setFocusable(true);
	    setBackground(Color.DARK_GRAY);
	    setDoubleBuffered(true);
	    setSize(400, 300);
 
 
	}
 
	 public void addNotify() {
	        super.addNotify();
	        B_WIDTH = getWidth();
	        B_HEIGHT = getHeight();   
	    }
 
	 public void paint(Graphics g) 
		{
			super.paint(g);			
			Graphics2D g2d = ( Graphics2D )g; 
 
 
 
 
				if(level1==true){
 
					level1Obj.paintComponent(g);
 
				}
 
 
				if(level2==true){
 
					level2Obj.paintComponent(g);
					System.out.println("painting");
 
				}
			for(int i = 0; i <= 18; i++){
 
				g2d.drawImage(wall, i*30, 0, this);
	    		g2d.drawImage(wall, i*30, 540, this);
	    		g2d.drawImage(wall, 0, i*30, this);
	    		g2d.drawImage(wall, 570, i*30, this);
			}
 
 
			g2d.drawImage(player.getImage(), player.getX(), player.getY(), this);
 
			Toolkit.getDefaultToolkit().sync();
 
 
		}
 
 
 
	public void actionPerformed(ActionEvent e) {
		player.move();
        player.collision();
        collision();
        repaint();  
 
    }
 
 
	public void collision(){
		Rectangle r1 = player.getBounds();
 
		if(level1){
			Rectangle r2 = level1Obj.getBounds();
 
			Rectangle r3 = level1Obj.getBounds1();
			Rectangle r4 = level1Obj.getBounds2();
 
			if(r1.intersects(r2)){
				level1Obj.wallUp = false;
 
			}
			if(r1.intersects(r3)){
				if(level1Obj.wallUp){
					player.dx = 0;
					player.rightTrue = false;
				}
			}
 
			if(r1.intersects(r4)){
				player.x = 40;
				player.y = 500;
				level1=false;
				level2 = true;
				System.out.println("level2");
 
			}
 
 
		}
 
		if(level2==true){
 
			System.out.println("collision");
			Rectangle r5 = level2Obj.getBounds();
			Rectangle r6 = level2Obj.getBounds1();
			Rectangle r7 = level2Obj.getBounds2();
			Rectangle r8 = level2Obj.getBounds5();
			Rectangle r9 = level2Obj.getBounds7();
 
			Rectangle b1 = level2Obj.getBounds3();
			Rectangle b2 = level2Obj.getBounds4();
			Rectangle b3 = level2Obj.getBounds6();
 
			Rectangle e = level2Obj.getBounds8();
 
			if(r1.intersects(r5) || r1.intersects(r6)){
					player.level2collision();
			}
			if(level2Obj.button1){
				if(r1.intersects(r7)){
					player.dy = 0;
					player.upTrue = false;
				}
			}
			if(r1.intersects(b1)){
				level2Obj.button1 = false;
			}
			if(level2Obj.button2){
				if(r1.intersects(r8)){
					player.level2collision();
				}
			}
			if(r1.intersects(b2)){
				level2Obj.button2 = false;
			}
			if(level2Obj.button3){
				if(r1.intersects(r9)){
					player.level2collision();
				}
			}
			if(r1.intersects(b3)){
				level2Obj.button3 = false;
			}
			if(r1.intersects(e)){
				level2 = false;
				player.x = 40;
				player.y = 500;
			}
 
		}
	}
 
 
 
	private class TAdapter extends KeyAdapter {
 
        public void keyReleased(KeyEvent e) {
            player.keyReleased(e);
        }
 
        public void keyPressed(KeyEvent e) {
            player.keyPressed(e);
        }
    }
 
 
 
 
}

Player

package maze;
 
import java.awt.*;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.KeyEvent;
import java.awt.Rectangle;
 
import javax.swing.ImageIcon;
import javax.swing.JPanel;
 
public class Player extends JPanel {
 
 
    private Image buckysFront;
    private Image buckysLeft;
    private Image buckysRight;
    private Image buckysBack;
 
 
    private boolean playerUp = true;
    private boolean playerDown = false;
    private boolean playerLeft = false;
    private boolean playerRight = false;
    boolean leftTrue = true;
    boolean rightTrue = true;
    boolean upTrue = true;
    boolean downTrue = true;
    boolean level1 = true;
    boolean level1wall = true;
 
 
    int dx;
    int dy;
    private int width;
    private int height;
    int x;
    int y;
 
 
 
    public Player() {
    	x = 40;
        y = 500;
 
 
 
        ImageIcon iibB = new ImageIcon(this.getClass().getResource("buckysBack.png"));
        	buckysBack = iibB.getImage();
 
        ImageIcon iibF = new ImageIcon(this.getClass().getResource("buckysFront.png"));
        	buckysFront = iibF.getImage();
 
    	ImageIcon iibL = new ImageIcon(this.getClass().getResource("buckysLeft.png"));
    		buckysLeft = iibL.getImage();
 
    	ImageIcon iibR = new ImageIcon(this.getClass().getResource("buckysRight.png"));
    		buckysRight = iibR.getImage();
 
    	width = buckysBack.getWidth(null);
    	height = buckysBack.getHeight(null);
 
    }
 
 
    public void move() {
        x += dx;
        y += dy;
    }
 
    public int getX() {
        return x;
    }
 
    public int getY() {
        return y;
    }
    public void collision(){
    	if(getX()<30){
    		dx = 0;
    		leftTrue = false;
    	}
    	if(getX()>540){
    		dx = 0;
    		rightTrue = false;
    	}
    	if(getY()<30){
    		dy = 0;
    		upTrue = false;
    	}
    	if(getY()>509){
    		dy = 0;
    		downTrue = false;
    	}
 
    }
 
    	public void level1collision(){
    			if(getX()>90){
    				dx = 0;
    				rightTrue = false;
    			}
    		}
 
    	public void level2collision(){
    		if(playerRight){
    			dx = 0;
    			x = x-1;
    			rightTrue = false;
    		}
    		if(playerLeft){
    			dx = 0;
    			x = x+1;
    			leftTrue = false;
    		}
    		if(playerUp){
    			dy = 0;
    			y = y+1;
    			upTrue = false;
    		}
    		if(playerDown){
    			dy = 0;
    			y = y-1;
    			downTrue = false;
    		}
    	}
 
 
 
 
    public Image getImage() {
    	if(playerUp){
        return buckysBack;
    	}
    	if(playerDown){
    		return buckysFront;
    	}
    	if(playerLeft){
    		return buckysLeft;
    	}
    	return buckysRight;
    }
 
    public Rectangle getBounds() {
        return new Rectangle(x, y, width, height);
    }
 
 
    public void keyPressed(KeyEvent e) {
 
        int key = e.getKeyCode();
 
        if(leftTrue){
        if (key == KeyEvent.VK_LEFT) {
            dx = -1;
            playerLeft = true;
            playerRight = false;
            playerUp = false;
            playerDown = false;
            rightTrue = true;
            upTrue = true;
            downTrue = true;
 
        }
}
        if(rightTrue){
        if (key == KeyEvent.VK_RIGHT) {
            dx = 1;
            playerLeft = false;
            playerRight = true;
            playerUp = false;
            playerDown = false;
            leftTrue = true; 
            upTrue = true;
            downTrue = true;
        }
        }
 
        if(upTrue){
        if (key == KeyEvent.VK_UP) {
            dy = -1;
            playerLeft = false;
            playerRight = false;
            playerUp = true;
            playerDown = false;
            leftTrue = true;
            rightTrue = true;
            downTrue = true;
 
        }
        }
 
        if(downTrue){
        if (key == KeyEvent.VK_DOWN) {
            dy = 1;
            playerLeft = false;
            playerRight = false;
            playerUp = false;
            playerDown = true;
            leftTrue = true;
            rightTrue = true;
            upTrue = true;
        }
        }
        if(dx==1 && dy==1){
        	dx = 0;
        	dy = 0;
        }
        if(dx==1 && dy==-1){
        	dx = 0;
        	dy = 0;
        }
        if(dx==-1 && dy==1){
        	dx = 0;
        	dy = 0;
        }
        if(dx==-1 && dy==-1){
        	dx = 0;
        	dy = 0;
        }
    }
 
    public void keyReleased(KeyEvent e) {
        int key = e.getKeyCode();
 
        if (key == KeyEvent.VK_LEFT) {
            dx = 0;
        }
 
        if (key == KeyEvent.VK_RIGHT) {
            dx = 0;
        }
 
        if (key == KeyEvent.VK_UP) {
            dy = 0;
        }
 
        if (key == KeyEvent.VK_DOWN) {
            dy = 0;
        }
    }
 
 
}

Level1

package maze;
 
import java.awt.*;
 
 
 
import javax.swing.ImageIcon;
import javax.swing.JPanel;
 
import maze.Player;
 
public class Level1 extends JPanel {
 
	private Image wall;
	private Image greenButton;
	private Image walls;
	private Image end;
 
 
    private int x;
    private int y;
    private int width;
    private int height;
 
    private Player player;
 
    boolean wallUp = true;
 
	public Level1(){
 
 
		player = new Player();
 
 
 
    ImageIcon iiw = new ImageIcon(this.getClass().getResource("walls.png"));
    	walls = iiw.getImage();
 
    ImageIcon iigB = new ImageIcon(this.getClass().getResource("greenButton.png"));
    	greenButton = iigB.getImage();
 
    ImageIcon iie = new ImageIcon(this.getClass().getResource("finishHole.png"));
    	end = iie.getImage();
 
 
 
 
	width = walls.getWidth(null);
	height = walls.getHeight(null);
 
	}
	public Rectangle getBounds2() {
		return new Rectangle(540, 510, 30, 30);
	}
	public Rectangle getBounds1() {
		return new Rectangle(120, 0, width, height);
	}
 
	public Rectangle getBounds() {
        return new Rectangle(60, 60, 30, 30);
    }
 
	public void paintComponent(Graphics g) 
	{
		super.paintComponents(g);			
		Graphics2D g2 = ( Graphics2D )g;
 
		g2.drawImage(greenButton, 60, 60, this);
		g2.drawImage(end, 540, 510, this);
		if(wallUp){
			g2.drawImage(walls, 120, 0, this);
		}
 
 
  }
 
 
}

Level2

package maze;
 
import java.awt.*;
 
 
 
import javax.swing.ImageIcon;
import javax.swing.JPanel;
 
import maze.Player;
 
public class Level2 extends JPanel {
 
	private Image greenButton;
	private Image end;
	private Image wallHalf;
	private Image wallHalfSide;
 
	boolean button1 = true;
	boolean button2 = true;
	boolean button3 = true;
 
	public Level2(){
 
 
    ImageIcon iigB = new ImageIcon(this.getClass().getResource("greenButton.png"));
    	greenButton = iigB.getImage();
 
    ImageIcon iie = new ImageIcon(this.getClass().getResource("finishHole.png"));
    	end = iie.getImage();
 
    ImageIcon iiwh = new ImageIcon(this.getClass().getResource("wallhalf.png"));
    	wallHalf = iiwh.getImage();
 
    ImageIcon iiwhs = new ImageIcon(this.getClass().getResource("wallhalfside.png"));
    	wallHalfSide = iiwhs.getImage();
 
 
	}
	public Rectangle getBounds8(){
		return new Rectangle(540, 510, 30, 30);
	}
	public Rectangle getBounds7(){
		return new Rectangle(540, 30, 210, 330);
	}
 
	//green button in room 3
	public Rectangle getBounds6(){
		return new Rectangle(60, 60, 30, 30);
	}
	public Rectangle getBounds5(){
		return new Rectangle(-30, 240, 30, 270);
	}
	//green button in room2
		public Rectangle getBounds4() {
			return new Rectangle(390, 60, 30, 30);
		}
 
	//green button in room1
	public Rectangle getBounds3() {
		return new Rectangle(180, 510, 30, 30);
	}
 
	public Rectangle getBounds2() {
		return new Rectangle(0, 330, 270, 30);
	}
	public Rectangle getBounds1() {
		return new Rectangle(210, 360, 30, 270);
	}
 
	public Rectangle getBounds() {
        return new Rectangle(210, 0, 30, 270);
    }
 
 
	public void paintComponent(Graphics g) 
	{
		super.paintComponents(g);			
		Graphics2D g2d = ( Graphics2D )g;
 
		g2d.drawImage(greenButton, 60, 60, this);
		g2d.drawImage(greenButton, 180, 510, this);
		g2d.drawImage(greenButton, 390, 60, this);
		g2d.drawImage(end, 540, 510, this);
		g2d.drawImage(wallHalf, 210, 0, this);
		g2d.drawImage(wallHalf, 210, 360, this);
 
 
		if(button1){
			g2d.drawImage(wallHalfSide, 0, 330, this);
		}
		if(button2){
			g2d.drawImage(wallHalfSide, -30, 240, this);
		}
		if(button3){
			g2d.drawImage(wallHalfSide, 210, 330, this);
			g2d.drawImage(wallHalfSide, 450, 330, this);
		}
 
 
 
  }
 
 
}

Originally Posted by Norm

Does the code call repaint() when you want the paint() method to be called?

I just tried calling repaint() in the method which changes the level, but I don't think any of my methods have 'if(level2==true)' are being run for some reason, so I think it might be a problem to do with setting level2 to true?

I think I may have got it to work!

Originally Posted by Huw

If they all had main methods, how would the program know which to run, or am I just being stupid here?

It is a good question, and the answer is, you specify which class the program will start with, and the main method of that class will be called.

So for example, if you had another class which also had a main method, that main method would just never be called unless you called it somewhere in your code that is executing. (which you can and likely will do eventually)