package passage.games;

import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.opengl.GL20.*;

import java.lang.reflect.Field;

import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.PixelFormat;
import org.lwjgl.util.glu.GLU;
import org.lwjgl.util.vector.Vector3f;

public class Game {
	public Game() throws LWJGLException {init();}

	public DisplayMode displayMode = null;
	public PixelFormat pixelFormat = null;

	public Camera camera = new Camera();
	public Block block = new Block();
	public Block block2 = new Block();

	public Shader shader;

	public void init() throws LWJGLException{
		displayMode = new DisplayMode(800, 600);
		pixelFormat = new PixelFormat(8, 16, 1, 4);

		resetDisplay();
		updateProjection();

		Keyboard.create();
		Mouse.create();

		glClearColor(0.5f, 0.5f, 0.5f, 1f);

		glEnable(GL_DEPTH_TEST);
		glDepthFunc(GL_LEQUAL);
		glClearDepth(1.0f);

		glDisable(GL_CULL_FACE);

		block.init();
		block2.init();

		block2.location = new Vector3f(0, 2, 0);

		shader = new Shader();
		shader.attachVertexShader("assets/box.vert");
		shader.attachFragmentShader("assets/box.frag");
		shader.link();

		while(!Display.isCloseRequested()){
			update();
			render();
		}
	}

	public void render(){
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
		if(Display.wasResized()) updateProjection();
		glLoadIdentity();
		camera.translatePosition();

		shader.bind();

		glUniform3f(glGetUniformLocation(shader.programID, "lightLocation"), camera.vector.x, camera.vector.y, 10);

		block.render();
		block2.render();

		shader.unbind();

		Display.update();
	}

	public void update(){
		camera.update();

		block.update();
		block2.update();

		Display.sync(60);
	}

	public void destroy(){
		block.destroy();

		Keyboard.destroy();
		Mouse.destroy();
		Display.destroy();
	}

	public static void main(String[] args) throws LWJGLException{
		new Game();
	}

	public void resetDisplay() throws LWJGLException{
		if(Display.isCreated()) Display.destroy();
		Display.setDisplayMode(displayMode);
		Display.create(pixelFormat);
	}

	public void updateProjection(){
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		GLU.gluPerspective(45, (float)800 / 600, 0.1f, 1000);
		glMatrixMode(GL_MODELVIEW);
	}
}