Hi, I am trying to use this library but I am having some problems...
I am trying to compile and run the demo from this site
http://gpwiki.org/index.php/OpenGL:Tutorials:Java:LWJGL:Introduction I am using JCreator and have set it up following these instructions,
http://lwjgl.org/installation.php Anyways, I compile the code, it works fine. I try and run it, and I get this error.
Exception in thread "main" java.lang.NoClassDefFoundError
at Game.cleanup(Game.java:105)
at Game.main(Game.java:40)
Press any key to continue...
I am running the game with these parameters -classpath "$[ClassPath]" -Djava.library.path=C:\lwjgl-1.0beta3\native $[JavaClass]
Here is my code
import org.lwjgl.Sys;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;
/**
* Basic game
*
* @author Name <email>
* @version 1.0
*/
public class Game {
/** Game title */
public static final String GAME_TITLE = "My Game";
/** Desired frame time */
private static final int FRAMERATE = 60;
/** Exit the game */
private static boolean finished;
/** Angle of rotating square */
private static float angle;
/**
* Application init
* @param args Commandline args
*/
public static void main(String[] args) {
boolean fullscreen = (args.length == 1 && args[0].equals("-fullscreen"));
try {
init(fullscreen);
run();
} catch (Exception e) {
e.printStackTrace(System.err);
Sys.alert(GAME_TITLE, "An error occured and the game will exit.");
} finally {
cleanup();
}
System.exit(0);
}
/**
* Initialise the game
* @throws Exception if init fails
*/
private static void init(boolean fullscreen) throws Exception {
// Create a fullscreen window with 1:1 orthographic 2D projection (default)
Display.setTitle(GAME_TITLE);
Display.setFullscreen(fullscreen);
// Enable vsync if we can (due to how OpenGL works, it cannot be guarenteed to always work)
Display.setVSyncEnabled(true);
// Create default display of 640x480
Display.create();
}
/**
* Runs the game (the "main loop")
*/
private static void run() {
while (!finished) {
// Always call Window.update(), all the time - it does some behind the
// scenes work, and also displays the rendered output
Display.update();
// Check for close requests
if (Display.isCloseRequested()) {
finished = true;
}
// The window is in the foreground, so we should play the game
else if (Display.isActive()) {
logic();
render();
Display.sync(FRAMERATE);
}
// The window is not in the foreground, so we can allow other stuff to run and
// infrequently update
else {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
}
logic();
// Only bother rendering if the window is visible or dirty
if (Display.isVisible() || Display.isDirty()) {
render();
}
}
}
}
/**
* Do any game-specific cleanup
*/
private static void cleanup() {
// Close the window
Display.destroy();
}
/**
* Do all calculations, handle input, etc.
*/
private static void logic() {
// Example input handler: we'll check for the ESC key and finish the game instantly when it's pressed
if (Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
finished = true;
}
// Rotate the square
angle += 2.0f % 360;
}
/**
* Render the current frame
*/
private static void render() {
// clear the screen
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_STENCIL_BUFFER_BIT);
// center square according to screen size
GL11.glPushMatrix();
GL11.glTranslatef(Display.getDisplayMode().getWidth() / 2, Display.getDisplayMode().getHeight() / 2, 0.0f);
// rotate square according to angle
GL11.glRotatef(angle, 0, 0, 1.0f);
GL11.glBegin(GL11.GL_QUADS);
GL11.glVertex2i(-50, -50);
GL11.glVertex2i(50, -50);
GL11.glVertex2i(50, 50);
GL11.glVertex2i(-50, 50);
GL11.glEnd();
GL11.glPopMatrix();
}
}
Anyone know what I am doing wrong?
