Minecraft extra F3 debug information

F3GuiDemo.java

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.Vec3;
import net.minecraftforge.client.event.RenderGameOverlayEvent;
import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.ForgeSubscribe;
import cpw.mods.fml.common.FMLCommonHandler;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.network.NetworkMod;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

@Mod(modid="f3guidemo", name="F3GuiDemo", version="1.0.0")
@NetworkMod(clientSideRequired=true, serverSideRequired=false)
public class F3GuiDemo {
	
	@EventHandler
    public void load(FMLInitializationEvent event)
    {
		  if(FMLCommonHandler.instance().getSide() == Side.CLIENT)
		  {	
			  MinecraftForge.EVENT_BUS.register(this);
		  }
    }
	
	@SideOnly(Side.CLIENT)
	@ForgeSubscribe
	public void renderGameOverlayEvent(RenderGameOverlayEvent event)
	{
		if(event.type == ElementType.TEXT && RenderManager.instance.getFontRenderer() != null && Minecraft.getMinecraft().gameSettings.showDebugInfo)
		{
			EntityPlayer player = Minecraft.getMinecraft().thePlayer;
			Vec3 vec3 = player.getLookVec();
			RenderManager.instance.getFontRenderer().drawStringWithShadow("X:"+(Math.abs(vec3.xCoord)<-0.0001?0:String.format("%.4f",vec3.xCoord)), 50, 20, 0xFFFFFF);
			RenderManager.instance.getFontRenderer().drawStringWithShadow("Y:"+(Math.abs(vec3.yCoord)<-0.0001?0:String.format("%.4f",vec3.yCoord)), 50, 28, 0xFFFFFF);
			RenderManager.instance.getFontRenderer().drawStringWithShadow("Z:"+(Math.abs(vec3.zCoord)<-0.0001?0:String.format("%.4f",vec3.zCoord)), 50, 36, 0xFFFFFF);
			RenderManager.instance.getFontRenderer().drawStringWithShadow("yaw:"+player.rotationYaw, 50, 44, 0xFFFFFF);
			RenderManager.instance.getFontRenderer().drawStringWithShadow("pitch:"+player.rotationPitch, 50, 52, 0xFFFFFF);
		}
	}

}