Generation aléatoire de terrain cubique ??

import org.lwjgl.util.vector.Vector3f;

import fr.indiev.MineCraft.render.Camera;
import fr.indiev.MineCraft.render.DisplayManager;
import static org.lwjgl.opengl.GL11.*;

public class Main {
	
	boolean running = false;
	
	Camera cam;
	
	public Main() {
		DisplayManager.create(1920, 1080, "Minecraft 2.0");
		cam = new Camera(new Vector3f(0, 0, 0));
		cam.setPerspectiveProjection(70f, 0.1f, 1000.0f);
	}
	
	public void start() {
		running = true;
		loop();
	}
	
	public void stop() {
		running = false;
	}
	
	public void exit() {
		DisplayManager.dispose();
		System.exit(0);
	}
	
	public void loop() {
		while(running) {
			if (DisplayManager.isClosed()) stop();
			DisplayManager.update();
			render();
		}
		exit();
	}
	
	public void render() {
		cam.getPerspectiveProjection();
	}
	
	public static void main(String[] args) {
		Main main = new Main();
		main.start();
	}

}

public class DisplayManager {
	public static void create(int width, int height, String title) {
		try {
			Display.setDisplayMode(new DisplayMode(width, height));
			Display.setTitle(title);
			
			Display.create();
		} catch (LWJGLException e) {
			e.printStackTrace();
		}
	}
	
	public static void update() {
		Display.update();
	}
	
	public static void clearBuffers() {
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	}
	
	public static boolean isClosed() {
		return Display.isCloseRequested();
	}
	
	public static void dispose() {
		Display.destroy();
	}
}

public class Camera {
	private float fov;
	private float zNear;
	private float zFar;
	
	private Vector3f position;
	
	public Camera(Vector3f position) {
		this.position= position;
	}
	
	public Camera setPerspectiveProjection(float fov, float zNear, float zFar) {
		this.fov = fov;
		this.zNear = zNear;
		this.zFar = zFar;
		
		return this;
	}
	
	public void getPerspectiveProjection() {
		glEnable(GL_PROJECTION);
		glLoadIdentity();
		GLU.gluPerspective(fov, (float)Display.getWidth() / (float)Display.getHeight(), zNear, zFar);
		glEnable(GL_MODELVIEW);
	}

	public Vector3f getPosition() {
		return position;
	}

	public void setPosition(Vector3f position) {
		this.position = position;
	}
	
}