import java.awt.*; 
import java.awt.event.KeyEvent; 
import java.awt.image.BufferedImage; 
import javax.swing.JFrame; 
import java.util.List;
import java.util.ArrayList;

/** 
 * Main class for the game 
 */ 
public class GameEngine extends JFrame 
{        
    boolean isRunning = true; 
    int fps = 30; 
    int windowWidth = 500; 
    int windowHeight = 500; 
    
    BufferedImage backBuffer; 
    Insets insets; 
    InputHandler input; 
    
    int x=windowWidth/2;
    int y=windowHeight/2;
    int xmove=0;
    int ymove=0;
    
    public static void main(String[] args) 
    { 
            GameEngine game = new GameEngine(); 
            game.run(); 
            System.exit(0); 
    } 
    
    /** 
     * This method starts the game and runs it in a loop 
     */ 
    public void run() 
    { 
        initialize(); 
        
        while(isRunning) 
        { 
            long time = System.currentTimeMillis(); 
            
            update(); 
            draw(); 
            
            //  delay for each frame  -   time it took for one frame 
            time = (1000 / fps) - (System.currentTimeMillis() - time); 
            
            if (time > 0) 
            { 
                try{Thread.sleep(time);}catch(Exception e){} 
            } 
        } 
                
        setVisible(false); 
    } 
        
    /** 
     * This method will set up everything need for the game to run 
     */ 
    void initialize() 
    {
        setTitle("Game Demo"); 
        setSize(windowWidth, windowHeight); 
        setResizable(false); 
        setDefaultCloseOperation(EXIT_ON_CLOSE); 
        setVisible(true); 
        
        insets = getInsets(); 
        setSize(insets.left + windowWidth + insets.right, 
        insets.top + windowHeight + insets.bottom); 

        backBuffer = new BufferedImage(windowWidth, windowHeight, BufferedImage.TYPE_INT_RGB); 
        input = new InputHandler(this); 
        objects.add(new Player(100,100));
    } 
    
    List<Objects> objects = new ArrayList<Objects>(0); //List of all objects in the game
    
    /** 
     * This method will check for input, move things 
     * around and check for win conditions, etc 
     */ 
    void update() 
    { 
    	for (int i=0; i<objects.size(); i++){
    		objects.get(i).act();
    	}
    }
    
    /** 
     * This method will draw everything 
     */
    void draw() 
    {               
        Graphics g = getGraphics(); 
        
        Graphics bbg = backBuffer.getGraphics(); 
        
        bbg.setColor(Color.WHITE); 
        bbg.fillRect(0, 0, windowWidth, windowHeight); 
        
        for (int i=0; i<objects.size(); i++){
        	bbg.drawImage(objects.get(i).getImage(),objects.get(i).getX(),objects.get(i).getY(),this);
        }
        
        g.drawImage(backBuffer, insets.left, insets.top, this); 
    }
}