package net.devox.basic;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
/*
* Title: Game
* Version: 1.0.0
* Desc: This class is used to control and pack together the
* methods required to run the games logic in a central
* location.
*/
public class Game extends Canvas
{
//buffer for off screen drawing
private BufferedImage buffer;
private static final long serialVersionUID = 1L;
private void init()
{
//turn paint off
this.setIgnoreRepaint(true);
//set size
this.setSize(GUI.WIDTH, GUI.HEIGHT);
//set Focusable
this.setFocusable(true);
//create buffer
buffer = new BufferedImage(GUI.WIDTH, GUI.HEIGHT, BufferedImage.TYPE_INT_ARGB);
}
public void start()
{
//initialize game
this.init();
//start loop
while(true){
try{
this.update();
this.drawbuffer();
this.drawscreen();
}catch(Exception e){e.printStackTrace(); Main.close();}
}
}
private void update()
{
return;
}
private void drawbuffer()
{
//set buffer
Graphics buff = buffer.createGraphics();
//do drawing logic
drawrect(buff, 10, 10, 10, 10);
//clear buffer
buff.dispose();
}
private void drawscreen()
{
Graphics2D g2d = (Graphics2D)getGraphics();
// Render Buffer to Screen
g2d.drawImage(buffer, 0, 0, this);
Toolkit.getDefaultToolkit().sync();
// Dispose of Graphics2D
g2d.dispose();
}
//Generic render method. Change this.
private void drawrect(Graphics buff, int x, int y, int width, int height)
{
buff.setColor(Color.BLACK);
buff.drawRect(x, y, width, height);
}
}
( http://pastebin.com/A8hEgMMf )
I get the error:
java.lang.NullPointerException
at net.devox.basic.Game.drawscreen(Game.java:81)
at net.devox.basic.Game.start(Game.java:57)
at net.devox.basic.Main.main(Main.java:19)
when I run it.
Does anyone have any advice or know how to fix the error? I'd greatly appreciate any feedback.
Thank you for your time.
turns out it was in my main function :/ I still don't understand it....
