JumpDude.java

import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class JumpDude extends JPanel implements Runnable, KeyListener{
	
	// Images
	public static BufferedImage menu;
	
	
	public static int gameState = 0;
	
	
	public JumpDude() {
		setPreferredSize(new Dimension(1280, 720));
		setBackground(new Color(255, 255, 255));
		
		try {
			menu = ImageIO.read(new File("menu.png"));
		}
		catch(Exception e) {
			System.out.println("IMAGE NOT FOUND");
		}
		
		addKeyListener(this);
		this.setFocusable(true);
	}
	
	public static void main(String[] args) {
		JFrame gameWindow = new JFrame("Game Name");
		JumpDude gamePanel = new JumpDude();
		gameWindow.add(gamePanel);
		gameWindow.pack();
		gameWindow.setVisible(true);
	}
	public void paintComponent(Graphics g) {
		
		super.paintComponent(g);
		
		if(gameState == 0) {
			g.drawImage(menu, 0, 0, null);
			
		}
		
		
	}
	

	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void keyPressed(KeyEvent e) {
		if(gameState == 0) {
			if(e.getKeyChar() == ' ') {
				gameState = 1;
			}
		}
		
	}

	@Override
	public void keyReleased(KeyEvent e) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		
	}
}
// https://medium.com/@brazmogu/physics-for-game-dev-a-platformer-physics-cheatsheet-f34b09064558