Window.java JGO

package net.mrpizzacake.futura.core;

import org.lwjgl.opengl.GLContext;
import org.lwjgl.system.glfw.ErrorCallback;
import org.lwjgl.system.glfw.GLFWvidmode;
import java.nio.ByteBuffer;

import static org.lwjgl.system.MemoryUtil.*;
import static org.lwjgl.system.glfw.GLFW.*;

import static org.lwjgl.opengl.GL11.*;

public class Window
{
    private long id;
    private final Game game;
    public final int width;
    public final int height;
    private final CharSequence title;
    private final double aspect;

    public Window(Game g, int w, int h, CharSequence t)
    {
        game = g;
        width = w;
        height = h;
        title = t;
        aspect = (double)width / (double)height;

        game.parent = this;

        if ((id = glfwCreateWindow(width, height, title, NULL, NULL)) == NULL)
            throw new RuntimeException("Window couldn't be created");

        ByteBuffer vidMode = glfwGetVideoMode(glfwGetPrimaryMonitor());

        glfwSetWindowPos(
                                id,
                                (GLFWvidmode.width(vidMode) - width) / 2,
                                (GLFWvidmode.height(vidMode) - height) / 2
        );

        glfwMakeContextCurrent(id);
        GLContext.createFromCurrent();

        glViewport(0, 0, width, height);
        glMatrixMode(GL_PROJECTION);
        glOrtho(0, width, 0, height, -1, 1);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();

        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

        glfwShowWindow(id);

        game.init();

        while ( glfwWindowShouldClose(id) == GL_FALSE ) {
            update();
            render();
        }

        glfwDestroyWindow(id);
    }

    private void update()
    {
        game.update(this);
    }

    private void render()
    {
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glLoadIdentity();

        game.render(this);
        System.out.println(glGetError());

        glfwSwapBuffers(id);
        glfwPollEvents();
    }

    public static void initGLFW()
    {
        glfwSetErrorCallback(ErrorCallback.Util.getDefault());

        if (glfwInit() != GL_TRUE)
            throw new RuntimeException("GLFW couldn't be initialized");

        glfwDefaultWindowHints();
        glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
        glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);
    }
}