Main.java

import javax.swing.*;

/**
Main class for the game - controls which scene is shown
@author Jack Humphries
@version 4/1/2014
*/

public class Main
{
   /** the width of the window */
   private int width;
   
   /** the height of the window */
   private int height;
   
   /** the title scene */
   private TitleScene titleScene;
   
   /** the game scene */
   private GameScene gameScene;
   
   /** the game over scene */
   private GameOverScene gameOverScene;
   
   /** the window of the program */
   private JFrame frame;
   
   /**
   displays the title scene - removes other scenes from the window 
   if necessary
   */
   public void displayTitleScene()
   {
      if (gameScene != null)
      {
         frame.remove(gameScene);
      }
      
      if (gameOverScene != null)
      {
         frame.remove(gameOverScene);
      }
   
      //handle the insets of the JFrame
      int contentWidth = width 
         - frame.getInsets().left - frame.getInsets().right;
      int contentHeight = height 
         - frame.getInsets().top - frame.getInsets().bottom;
                  
      if (titleScene == null)    
      {
         titleScene = new TitleScene(contentWidth, contentHeight, this);
      }
      
      frame.add(titleScene);
      titleScene.setFocusable(true);
      titleScene.requestFocusInWindow();
            
      frame.setVisible(true);
   }
   
   /**
   displays the game scene - removes other scenes from the window 
   if necessary
   */
   public void displayGameScene()
   {
      if (titleScene != null)
      {
         frame.remove(titleScene);
      }
      
      if (gameOverScene != null)
      {
         frame.remove(gameOverScene);
      }
      
      //handle the insets of the JFrame
      int contentWidth = width 
         - frame.getInsets().left - frame.getInsets().right;
      int contentHeight = height 
         - frame.getInsets().top - frame.getInsets().bottom;
           
      if (gameScene == null)
      {    
         gameScene = new GameScene(contentWidth, contentHeight, this);
      }
      else
      {
         gameScene.reset();
      }
            
      frame.add(gameScene);
      gameScene.setFocusable(true);
      gameScene.requestFocusInWindow();
            
      frame.setVisible(true);
   }
   
   /**
   displays the game over scene - removes other scenes from the window 
   if necessary
   @param score the score the user received
   */
   public void displayGameOverScene(int score)
   {
      if (titleScene != null)
      {
         frame.remove(titleScene);
      }
      
      if (gameScene != null)
      {
         frame.remove(gameScene);
      }
      
      //handle the insets of the JFrame
      int contentWidth = width
         - frame.getInsets().left - frame.getInsets().right;
      int contentHeight = height
         - frame.getInsets().top - frame.getInsets().bottom;
      
      gameOverScene = new GameOverScene(contentWidth, contentHeight, 
            score, this);
         
      frame.add(gameOverScene);
      gameOverScene.setFocusable(true);
      gameOverScene.requestFocusInWindow();
   
      frame.setVisible(true);
   }

   public Main()
   {
      width = 1000;
      height = 750;
   
      frame = new JFrame();
      
      frame.setSize(width, height);
      frame.setLocationRelativeTo(null);
      frame.setTitle("Flappy Bird");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setResizable(false);
      
      displayTitleScene();
   }

   public static void main(String[] args)
   {
      Main main = new Main();
   }
}