package shootergame.display;

import shootergame.Main;
import shootergame.entity.player.EntityPlayer;
import shootergame.init.Textures;
import shootergame.inventory.Inventory;
import shootergame.text.Text;
import shootergame.util.gl.GlHelpers;
import shootergame.util.gl.texture.TextureReference;
import shootergame.util.math.ItemStack;
import shootergame.util.math.vec.Vec2d;

public class DisplayRenderUI
{
	
	
	public static void render()
	{
		// Get the player
		EntityPlayer player = Main.player;
		
		// Disable some opengl options
		GlHelpers.disableDepthTest();
		
		// Get some text settings
		Vec2d text_size = new Vec2d(0.5, 0.2);
		
		// Render the fps and the position
		GlHelpers.pushMatrix();
		GlHelpers.translate(-9.5, 9.5, 0);
		GlHelpers.color3(1, 1, 0);
		Text.render("FPS: " + DisplayStatsEventHandler.fps, text_size);
		GlHelpers.translate(0, -0.5, 0);
		Text.render("x: " + (int) player.pos.x + ", y: " + (int) player.pos.y, text_size);
		GlHelpers.color3(1, 1, 1);
		GlHelpers.popMatrix();
		
		// Render the healthbar
		double max_health = player.maxHealth();
		double a = 1 - (player.getHealth() / max_health);
		TextureReference health_fg = Textures.UI_HEALTH_FG;
		TextureReference health_bg = Textures.UI_HEALTH_BG;
		GlHelpers.begin();
		
		health_bg.texCoord(0, 1);	GlHelpers.vertex2(-3.2, -8.0);
		health_bg.texCoord(0, 0);	GlHelpers.vertex2(-3.2, -9.0);
		health_bg.texCoord(1, 0);	GlHelpers.vertex2(3.2, -9.0);
		health_bg.texCoord(1, 1);	GlHelpers.vertex2(3.2, -8.0);
		
		health_fg.texCoord(0, 1);	GlHelpers.vertex2(-3.2, -8.0);
		health_fg.texCoord(0, 0);	GlHelpers.vertex2(-3.2, -9.0);
		health_fg.texCoord(1-a, 0);	GlHelpers.vertex2(3.2-a*6.4, -9.0);
		health_fg.texCoord(1-a, 1);	GlHelpers.vertex2(3.2-a*6.4, -8.0);
		
		GlHelpers.end();
		
		// Display the amount of ammo left, and the defence and gun level
		GlHelpers.pushMatrix();
		TextureReference ammo_tex = Textures.ITEM_AMMO_BOX;
		TextureReference gunlevel_tex = Textures.UI_GUN_LEVEL;
		TextureReference deflevel_tex = Textures.UI_DEFENCE_LEVEL;
		GlHelpers.begin();
		
		ammo_tex.texCoord(0, 1);	GlHelpers.vertex2(-9.5, -8.5);
		ammo_tex.texCoord(0, 0);	GlHelpers.vertex2(-9.5, -7.0);
		ammo_tex.texCoord(1, 0);	GlHelpers.vertex2(-8.5, -7.0);
		ammo_tex.texCoord(1, 1);	GlHelpers.vertex2(-8.5, -8.5);
		
		
		gunlevel_tex.texCoord(0, 1);	GlHelpers.vertex2(-9.5, -6.5);
		gunlevel_tex.texCoord(0, 0);	GlHelpers.vertex2(-9.5, -5.0);
		gunlevel_tex.texCoord(1, 0);	GlHelpers.vertex2(-8.5, -5.0);
		gunlevel_tex.texCoord(1, 1);	GlHelpers.vertex2(-8.5, -6.5);
		
		deflevel_tex.texCoord(0, 1);	GlHelpers.vertex2(-9.5, -4.5);
		deflevel_tex.texCoord(0, 0);	GlHelpers.vertex2(-9.5, -3.0);
		deflevel_tex.texCoord(1, 0);	GlHelpers.vertex2(-8.5, -3.0);
		deflevel_tex.texCoord(1, 1);	GlHelpers.vertex2(-8.5, -4.5);
		
		GlHelpers.end();
		
		GlHelpers.translate(-8.5, -9, 0);
		Text.render(Integer.toString(player.ammo), text_size);
		GlHelpers.translate(0, 2.5, 0);
		Text.render(Integer.toString(player.gun_level), text_size);
		GlHelpers.translate(0, 2, 0);
		Text.render(Integer.toString(player.defence_level), text_size);
		GlHelpers.popMatrix();
		
		// Display all the items in the players inventory
		TextureReference slots_tex = Textures.UI_ITEM_SLOTS;
		GlHelpers.begin();
		
		slots_tex.texCoord(0, 1);	GlHelpers.vertex2(9.5, -9.4);
		slots_tex.texCoord(0, 0);	GlHelpers.vertex2(9.5, -7.6);
		slots_tex.texCoord(1, 0);	GlHelpers.vertex2(3.5, -7.6);
		slots_tex.texCoord(1, 1);	GlHelpers.vertex2(3.5, -9.4);
		
		GlHelpers.end();
		
		// Render the players active slot
		TextureReference hotbar_slot_tex = Textures.UI_ACTIVE_SLOT;
		GlHelpers.begin();
		
		hotbar_slot_tex.texCoord(0, 1);	GlHelpers.vertex2(4.55 + player.inventory_hand, -9.45);
		hotbar_slot_tex.texCoord(0, 0);	GlHelpers.vertex2(4.55 + player.inventory_hand, -7.55);
		hotbar_slot_tex.texCoord(1, 0);	GlHelpers.vertex2(3.45 + player.inventory_hand, -7.55);
		hotbar_slot_tex.texCoord(1, 1);	GlHelpers.vertex2(3.45 + player.inventory_hand, -9.45);
		
		GlHelpers.end();
		
		// Get the players inventory
		Inventory player_inv = player.getInventory();
		
		// Render the players inventory
		for(int i=0;i<6;i++)
		{
			ItemStack player_item = player_inv.getItem(i);
			
			if(!player_item.isEmpty())
			{
				player_item.item.render(new Vec2d(3.5 + i, -9.2), new Vec2d(1, 1.5));
				
				GlHelpers.pushMatrix();
				GlHelpers.translate(3.8 + i, -9.2, 0);
				Text.render(Integer.toString(player_item.count), text_size);
				GlHelpers.popMatrix();
			}
		}
		
		// Render the active slots text
		ItemStack item_active = player_inv.getItem(player.inventory_hand);
		if(!item_active.isEmpty())
		{
			GlHelpers.pushMatrix();
			GlHelpers.translate(3.8, -7.4, 0);
			Text.render(item_active.item.getName(item_active.meta), text_size);
			GlHelpers.popMatrix();
		}
		
		// Render the loaded menu
		Main.menu.render();
	}
}