TitleScene.java

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
import java.io.File;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.awt.event.*;

/**
The title scene - includes the title and the play button
@author Jack Humphries
@version 4/15/2014
*/

public class TitleScene extends JComponent implements MouseListener
{
   /** the x coordinate of the bird */
   public static final int BIRD_X = 200;
   
   /** the amount of time in milliseconds that the timer waits before
   moving each object on screen (changing this number will speed up
   or slow down the animation) */
   public static final int MOVEMENT_TIME = 5;
   
   /** the amount of time in milliseconds that the timer waits before 
   redrawing all of the objects on the screen */
   public static final int ANIMATION_TIME = 20;
   
   /** the bottom possible y coordinate of the top of clouds */
   public static final int BOTTOM_CLOUD_Y = 30;
   
   /** the amount of vertical space between the title and author images */
   public static final int VERTICAL_TITLE_SPACE = 10;
   
   /** the amount of red in the color of the background (RGB) */
   public static final double BACKGROUND_COLOR_R = 0.0;
   
   /** the amount of green in the color of the background (RGB) */
   public static final double BACKGROUND_COLOR_G = 198.0;

   /** the amount of blue in the color of the background (RGB) */
   public static final double BACKGROUND_COLOR_B = 255.0;
   
   /** the timer that coordinates when objects will be moved on screen */
   private Timer movementTimer;
   
   /** the timer that coordinates when objects will be redrawn on screen */
   private Timer animationTimer;

   /** the width of the scene */
   private int width;
   
   /** the height of the scene */
   private int height;
   
   /** the background of the scene */
   private Rectangle background;
   
   /** the game title image (Flappy Bird) */
   private BufferedImage titleImage;
   
   /** the x coordinate of the title image */
   private int titleX;
   
   /** the y coordinate of the title image */
   private int titleY;
   
   /** the author image (Jack Humphries) */
   private BufferedImage authorImage;
   
   /** the x coordinate of the author image */
   private int authorX;
   
   /** the y coordinate of the author image */
   private int authorY;
   
   /** the original author image (Designed by Doug Nguyen) */
   private BufferedImage originalAuthorImage;
   
   /** the x coordinate of the original author image */
   private int originalAuthorX;
   
   /** the y coordinate of the original author image */
   private int originalAuthorY;
   
   /** the play button image (Play) */
   private BufferedImage playButtonImage;
   
   /** the x coordinate of the play button */
   private int playButtonX;
   
   /** the y coordinate of the play button */
   private int playButtonY;
   
   /** the bird displayed on the title scene */
   private Bird bird;
   
   /** the clouds in the scene */
   private Clouds clouds;
   
   /** the main class */
   private Main mainClass;
   
   /**
   draws the scene
   @param g the graphics object
   */
   public void paintComponent(Graphics g)
   {
      super.paintComponent(g);
   
      Graphics2D g2 = (Graphics2D)g;
      
      float backgroundRed = (float)(BACKGROUND_COLOR_R/255.0);
      float backgroundGreen = (float)(BACKGROUND_COLOR_G/255.0);
      float backgroundBlue = (float)(BACKGROUND_COLOR_B/255.0);
      Color backgroundColor = new Color(backgroundRed,
         backgroundGreen, backgroundBlue);
      g2.setColor(backgroundColor);
      g2.fill(background);
      
      clouds.redrawClouds(g2);
      bird.redrawBird(g2);
         
      g2.drawImage(titleImage, titleX, titleY, null);
      g2.drawImage(authorImage, authorX, authorY, null);
      g2.drawImage(originalAuthorImage, originalAuthorX, originalAuthorY, 
         null);
      g2.drawImage(playButtonImage, playButtonX, playButtonY, null);
   }
   
   /**
   moves/updates the objects on screen
   */
   private void moveAndUpdateObjects()
   {
      bird.moveBird();
      clouds.moveClouds();
   }
   
   /**
   starts animating the title scene
   */
   private void animate() 
   {
      Thread movementThread = new Thread(
            new Runnable()
            {
               public void run()
               {
                  startMovingObjects();
               }
               
            });
   
      Thread animationThread = new Thread(
            new Runnable()
            {
               public void run()
               {
                  startAnimating();
               }
               
            });
            
      movementThread.start();
      animationThread.start();
   }
   
   /**
   responsible for moving objects every MOVEMENT_TIME milliseconds
   */
   private void startMovingObjects()
   {
      movementTimer = new Timer(MOVEMENT_TIME, 
            new ActionListener()                                       
            {
               public void actionPerformed(ActionEvent e) 
               {
                  moveAndUpdateObjects();
               }
            });
            
      movementTimer.start();
   }
   
   /**
   responsible for calling the repaint method 
   every ANIMATION_TIME milliseconds
   */
   private void startAnimating()
   {
      animationTimer = new Timer(ANIMATION_TIME, 
            new ActionListener()                                       
            {
               public void actionPerformed(ActionEvent e) 
               {
                  repaint();
               }
            });
            
      animationTimer.start();
   }
   
   /**
   generates the background of the scene
   */
   private void generateBackground()
   {
      background = new Rectangle(0, 0, width, height);
   }
   
   /**
   generates the game title image
   */
   private void generateTitle()
   {
      File titlePath = new File("images/title.png");
   
      try
      {
         titleImage = ImageIO.read(titlePath);
      }
      catch (Exception exception)
      {
      
      }
      
      int titleWidth = titleImage.getWidth();
      int titleHeight = titleImage.getHeight();
      
      //center the title horizontally
      titleX = (width / 2) - (titleWidth / 2);
      
      //position the title two sevenths of the way down the scene
      titleY = ((height / 7) * 2) - (titleHeight / 2);
   }
   
   /**
   generates the author image
   */
   private void generateAuthor()
   {
      File authorPath = new File("images/author.png");
   
      try
      {
         authorImage = ImageIO.read(authorPath);
      }
      catch (Exception exception)
      {
      
      }
      
      authorX = titleX + titleImage.getWidth() - authorImage.getWidth();
      authorY = titleY + titleImage.getHeight() + VERTICAL_TITLE_SPACE;
   }
   
   /**
   generates the original author image
   */
   private void generateOriginalAuthor()
   {
      File originalAuthorPath = new File("images/original_author.png");
   
      try
      {
         originalAuthorImage = ImageIO.read(originalAuthorPath);
      }
      catch (Exception exception)
      {
      
      }
      
      originalAuthorX = titleX + titleImage.getWidth() 
         - originalAuthorImage.getWidth();
      originalAuthorY = authorY + authorImage.getHeight() 
         + VERTICAL_TITLE_SPACE;
   }
   
   /**
   creates the bird
   */
   private void createBird()
   {
      int y = ((originalAuthorY + originalAuthorImage.getHeight()) 
         + playButtonY) / 2;
      
      y -= Bird.HEIGHT / 2;
   
      bird = new Bird(BIRD_X, y, 0);
   }
   
   /**
   generates the clouds 
   */
   private void generateClouds()
   {
      int topCloudY = height - BOTTOM_CLOUD_Y - Clouds.MAXIMUM_CLOUD_HEIGHT;
      
      clouds = new Clouds(width, topCloudY, BOTTOM_CLOUD_Y);
   }
   
   /**
   generates the play button image
   */
   private void generatePlayButton()
   {
      File playButtonPath = new File("images/play_button.png");
   
      try
      {
         playButtonImage = ImageIO.read(playButtonPath);
      }
      catch (Exception exception)
      {
      
      }
      
      //center the play button horizontally
      playButtonX = (width / 2) - (playButtonImage.getWidth() / 2);
      
      //position the play button four fifths of the way down the scene
      playButtonY = ((height / 5) * 4) - (playButtonImage.getHeight() / 2);
   }
   
   /**
   called when the user clicks the mouse,
   if the user clicks the region of the play button, the game starts
   @param mouseEvent the mouse event
   */
   public void mouseClicked(MouseEvent mouseEvent)
   {
      Point clicked = mouseEvent.getPoint();
      Rectangle bounds = new Rectangle(playButtonX, playButtonY,
         playButtonImage.getWidth(), playButtonImage.getHeight());
      
      if (bounds.contains(clicked))
      {
         removeMouseListener(this);
         movementTimer.stop();
         animationTimer.stop();
         mainClass.displayGameScene();
      }
   }
   
   /**
   this method is not used - it is part of the MouseListener interface
   @param mouseEvent the mouse event
   */
   public void mouseEntered(MouseEvent mouseEvent)
   {
   
   }
   
   /**
   this method is not used - it is part of the MouseListener interface
   @param mouseEvent the mouse event
   */
   public void mouseExited(MouseEvent mouseEvent)
   {
   
   }
   
   /**
   this method is not used - it is part of the MouseListener interface
   @param mouseEvent the mouse event
   */
   public void mouseReleased(MouseEvent mouseEvent)
   {
   
   }
   
   /**
   this method is not used - it is part of the MouseListener interface
   @param mouseEvent the mouse event
   */
   public void mousePressed(MouseEvent mouseEvent)
   {
   
   }

   public TitleScene(int theWidth, int theHeight, Main theMainClass)
   {
      width = theWidth;
      height = theHeight;
      mainClass = theMainClass;
      
      generateBackground();
      generateTitle();
      generateAuthor();
      generateOriginalAuthor();
      generatePlayButton();
      createBird();
      generateClouds();
      
      addMouseListener(this);
      
      animate();
   }
}