package projectzombie.display;

import static org.lwjgl.opengl.GL11.GL_COLOR_BUFFER_BIT;
import static org.lwjgl.opengl.GL11.GL_DEPTH_BUFFER_BIT;
import static org.lwjgl.opengl.GL11.glClear;
import static org.lwjgl.opengl.GL11.glViewport;

import org.lwjgl.opengl.GL33;

import gl_engine.matrix.Matrix4;
import projectzombie.Main;
import projectzombie.entity.player.EntityPlayer;
import projectzombie.model.Model;
import projectzombie.world.chunk.ChunkEventHandler;

public class DisplayRender
{
	public static void render(int w, int h)
	{
		// Setup GL and clear the colour
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
		glViewport(0, 0, w, h);
		
		GL33.glEnable(GL33.GL_DEPTH_TEST);
		GL33.glUniform4f(Main.window.glsl_color, 1, 1, 1, 1);
		GL33.glUniform2f(Main.window.glsl_tex_cut, 0, 0);
		
		if(Main.menu.doGameRender)
		{
			if(ChunkEventHandler.loaded)
			{
				EntityPlayer player = Main.player;
				Camera camera = new Camera();
				Camera.camera = camera;
				
				// Create the projection matrix
				Matrix4 projection = Matrix4.projection((double)w / (double)h, 45, 0.1, 1000);
				Matrix4 rotated = Matrix4.rotate(-camera.angle, 0, 1, 0);
				
				// Process all the light sources
				//DynamicLighting.update();
				
				Main.window.environmentRenderer.use();
				GL33.glUniformMatrix4fv(Main.window.glsl_camera, true, camera.getMatrix().getArray());
				GL33.glUniformMatrix4fv(Main.window.glsl_projection, true, projection.getArray());
				GL33.glUniformMatrix4fv(Main.window.glsl_rotated, true, rotated.getArray());
				GL33.glUniform1i(Main.window.glsl_time, (int)((System.currentTimeMillis() / 10) % 1000));
				
				// Render the world and the player
				Main.world.render(camera);
				player.chunk = Main.world.getLayer().getChunk(player.pos);
				
				if(!Main.player.dead)
				{
					Model model = player.getModel();
					model.setModel(Matrix4.translate(player.pos.x - 0.5, player.getHeight(), player.pos.y - 0.5));
					model.render();
				}
			}
		}
		
		// Render the user interface
		DisplayRenderUI.render();
	}
}