GamePanel.java

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

public class GamePanel extends JPanel implements KeyListener
{

    public static EndScreen endScreen = new EndScreen();
    public static StartScreen startScreen = new StartScreen();
    public static JFrame mainFrame;
    public static JLabel userName;

    public static ArrayList<plateform> currentPlateformCourse = new ArrayList<>();
    public static ArrayList<plateform> plateformCourse1 = new ArrayList<>();
    public static ArrayList<plateform> plateformCourse2 = new ArrayList<>();
    public static ArrayList<plateform> plateformCourse3 = new ArrayList<>();
    public static int plateformDelay = 0;

    public static String playerName = startScreen.enterPlayerName.getText();


    public static boolean endScreenFrame = false;
    public static boolean startScreenFrame = true;

    public static boolean frameRate = true;
    public static boolean runGame = false;

    public static lava lava = new lava(0, 900, 1200, 200);
    public static int lavaDelay = 0;

    public static boolean moveLeft;
    public static boolean moveRight;

    public static int playerVelX = 6;
    public static int playerVelY;
    public static int acceleration;

    public static int playerSizeX = 50;
    public static int playerSizeY = 50;
    public static int playerCharacterBorderX = playerSizeX / 2;
    public static int playerCharacterBorderY = playerSizeY / 2;

    public static int spawnX;
    public static int spawnY;
    public static int playerPositionX;
    public static int playerPositionY;
    public static void main(String[]args) throws Exception
    {
            mainFrame = new JFrame();
            GamePanel visuals = new GamePanel();
            userName = new JLabel("Player: " + playerName);
            System.out.println(playerName);
            mainFrame.setSize(1200, 900);
            mainFrame.setResizable(false);
            userName.setBounds(0,0,300, 25);
            userName.setFont(new Font("SansSerif", Font.PLAIN, 20));
            mainFrame.add(userName);
            mainFrame.add(visuals);
            mainFrame.getContentPane().setBackground(Color.GRAY);

            

            spawnX = 600 - playerCharacterBorderX;
            spawnY = 900 - playerCharacterBorderY;
            playerPositionX = spawnX;
            playerPositionY = spawnY;
            
            plateform1Presets();
    
            mainFrame.addKeyListener(new KeyAdapter() {
                public void keyPressed (KeyEvent e)
                {
                    int key = e.getKeyCode();
                    if(key == 65 && playerPositionX > 0)
                    {
                        moveLeft = true;
                    }
    
                    if(key == 68 && playerPositionX < 1135)
                    {
                        moveRight = true;
                    }
                    
                    if(key == 32 && playerVelY == 0)
                    {
                        playerVelY = -35;
                        acceleration = 10;
                    }
                }
                public void keyReleased(KeyEvent e){
                    int key = e.getKeyCode();
                    if(key == 65)
                    {
                        moveLeft = false;
                    }
                    if(key == 68)
                    {
                        moveRight = false;
                    }
                }
                public void keyTyped(KeyEvent e){}
            });
    
            /*int courseChoice = randCourse.nextInt(2+1);
                
                if(courseChoice == 1)
                {
                    currentPlateformCourse = plateformCourse1;
                }
                if(courseChoice == 2)
                {
                    currentPlateformCourse = plateformCourse2;
                }*/
    
            while(frameRate == true)
            {
                mainFrame.repaint();  
                
                if(startScreenFrame == true)
                {
                    startScreen.startFrame.setVisible(true);
                    mainFrame.setVisible(false);
                    runGame = false;
                }
                else
                {
                    startScreen.startFrame.setVisible(false);
                    mainFrame.setVisible(true);
                    runGame = true;
                }
                
                if(endScreenFrame == true)
                    {
                        GamePanel.runGame = false;
                        startScreen.startFrame.setVisible(false);
                        mainFrame.setVisible(false);
                        endScreen.exitFrame.setVisible(true);
                        frameRate = false;
                    }

                if(runGame == true)
                {
                    character.playerMovement(moveLeft, moveRight);
    
                    currentPlateformCourse = plateformCourse1;
                    for(plateform plateform : currentPlateformCourse)
                    {
                        if(plateformDelay == 0)
                        {
                            plateform.blockPositionY += 1;
                            plateformDelay = 2;
                        }
                        else
                        {
                            plateformDelay--;
                        }

                        if(plateform.blockPositionY > 811)
                        {
                            plateform.blockPositionY = -600 - 50;
                        }
                    }
                    if(lava.lavaPositionY > 712)
                    {
                        if(lavaDelay == 0)
                        {
                            lava.lavaPositionY -= 1;
                            lavaDelay = 3;
                        }
                        else
                        {
                            lavaDelay--;
                        }
                    }
                }

                Thread.sleep(8);
            }
            

        
    }

    public void paint(Graphics g)
    {
        g.setColor(Color.blue);
        g.fillRect(playerPositionX, playerPositionY, playerSizeX, playerSizeY);
        
        for(plateform plateform : currentPlateformCourse)
        {
            g.setColor(Color.black);
            g.fillRect(plateform.blockPositionX, plateform.blockPositionY, plateform.blockSizeX, plateform.blockSizeY);
        }   

        g.setColor(Color.red);
        g.fillRect(lava.lavaPositionX, lava.lavaPositionY, lava.lavaSizeX, lava.lavaSizeY);
        
    }

    public static void plateform1Presets()
    {
        //First set of plateforms for course number 1
        plateformCourse1.add(new plateform(650,740,100,30));
        plateformCourse1.add(new plateform(450,740,100,30));

        plateformCourse1.add(new plateform(830,690,100,30));
        plateformCourse1.add(new plateform(270,690,100,30));

        plateformCourse1.add(new plateform(1000,580,100,30));
        plateformCourse1.add(new plateform(100,580,100,30));

        plateformCourse1.add(new plateform(790,470,100,30));
        plateformCourse1.add(new plateform(290,470,100,30));

        plateformCourse1.add(new plateform(930,350,100,30));
        plateformCourse1.add(new plateform(130,350,100,30));

        plateformCourse1.add(new plateform(1100,240,100,30));
        plateformCourse1.add(new plateform(0,240,100,30));

        plateformCourse1.add(new plateform(200,150,800,30));

        //Second set of plateforms for course number 1
        plateformCourse1.add(new plateform(550,50,100,30));

        plateformCourse1.add(new plateform(750,0,100,30));
        plateformCourse1.add(new plateform(350,0,100,30));

        plateformCourse1.add(new plateform(950,-30,100,30));
        plateformCourse1.add(new plateform(150,-30,100,30));

        plateformCourse1.add(new plateform(1100,-100,100,30));
        plateformCourse1.add(new plateform(0,-100,100,30));

        plateformCourse1.add(new plateform(950,-210,100,30));
        plateformCourse1.add(new plateform(150,-210,100,30));

        plateformCourse1.add(new plateform(300,-280,600,30));

        plateformCourse1.add(new plateform(950,-390,100,30));
        plateformCourse1.add(new plateform(150,-390,100,30));

        plateformCourse1.add(new plateform(1100,-490,100,30));
        plateformCourse1.add(new plateform(0,-490,100,30));

        plateformCourse1.add(new plateform(200,-600,800,30));
    }
    
    @Override
    public void keyPressed(KeyEvent e) {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException("Unimplemented method 'keyPressed'");
    }
    @Override
    public void keyReleased(KeyEvent e) {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException("Unimplemented method 'keyReleased'");
    }
    @Override
    public void keyTyped(KeyEvent e) {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException("Unimplemented method 'keyTyped'");
    }
}