Woo hoo! I got it to work!
Now the trick is getting it to compile. I'm taking the code directly from the skeleton code from the documentation at java-game-lib.sourceforge.net. Here are my problems:
Display.Create(...) Doesn't exist anymore. What replaced it?
It doesn't know what GL is. Do I need to reference other .jar files other than lwjgl.jar?
it say swapBuffers(...) is private. So how do I use it?
And it has no idea what display.destroy is. For reference, I've posted the code I copied below.
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| import org.lwjgl.*;
import org.lwjgl.opengl.*;
import org.lwjgl.input.*;
import java.nio.*;
public final class Game {
static {
try {
int mode = -1;
DisplayMode[] modes = Display.getAvailableDisplayModes();
for (int i = 0; i < modes.length; i++) {
if (modes[i].width == 640
&& modes[i].height == 480
&& modes[i].bpp >= 16) {
mode = i;
break;
}
}
Display.create(modes[mode], false);
System.out.println("Created display.");
} catch (Exception e) {
System.err.println("Failed to create display due to " + e);
System.exit(1);
}
}
public static final GL gl = new GL();
public static final GLU glu = new GLU(gl);
static {
try {
gl.create();
System.out.println("Created OpenGL.");
} catch (Exception e) {
System.err.println("Failed to create OpenGL due to " + e);
System.exit(1);
}
}
private static boolean finished;
private static float angle;
private Game() {
}
public static void main(String[] arguments) {
try {
init();
while (!finished) {
Keyboard.poll();
mainLoop();
render();
gl.swapBuffers();
}
} catch (Throwable t) {
t.printStackTrace();
} finally {
cleanup();
}
}
private static void mainLoop() {
angle += 1f;
if (angle > 360.0f)
angle = 0.0f;
if (Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
finished = true;
}
}
private static void render() {
gl.clear(GL.COLOR_BUFFER_BIT);
gl.pushMatrix();
gl.translatef(Display.getWidth() / 2, Display.getHeight() / 2, 0.0f);
gl.rotatef(angle, 0, 0, 1.0f);
gl.begin(GL.QUADS);
{
gl.vertex2i(-50, -50);
gl.vertex2i(50, -50);
gl.vertex2i(50, 50);
gl.vertex2i(-50, 50);
}
gl.end();
gl.popMatrix();
}
private static void init() throws Exception {
System.out.println("Press the ESCAPE key to exit");
Keyboard.create();
Sys.setTime(0);
Sys.setProcessPriority(Sys.LOW_PRIORITY);
System.out.println("Timer resolution: " + Sys.getTimerResolution() + " ticks per second");
gl.matrixMode(GL.PROJECTION);
gl.loadIdentity();
glu.ortho2D(0, Display.getWidth(), 0, Display.getHeight());
gl.matrixMode(GL.MODELVIEW);
gl.loadIdentity();
gl.viewport(0, 0, Display.getWidth(), Display.getHeight());
ByteBuffer num_tex_units_buf = ByteBuffer.allocateDirect(4);
num_tex_units_buf.order(ByteOrder.nativeOrder());
int buf_addr = Sys.getDirectBufferAddress(num_tex_units_buf);
gl.getIntegerv(GL.MAX_TEXTURE_UNITS_ARB, buf_addr);
System.out.println(
"Number of texture units: " + num_tex_units_buf.getInt());
}
private static void cleanup() {
Keyboard.destroy();
gl.destroy();
Display.destroy();
}
} |
