Hello everyone!

I'm trying to make a kind of experience bar for my mod.

So I've created a RenderGameOverlayEvent event to show the Gui bar on screen, but to make it work, I need to access to the player NBT data to know how much xp does the player have.

I've tried

DataSaver props = DataSaver.get(this.mc.thePlayer);

but it only show the initial data define by the NBT class.(in this case 0, even if my player level is not 0)

Is there any way to do that?

 

Here is my code:

 

DataSaver

public class DataSaver implements IExtendedEntityProperties
{
public final static String EXT_PROP_NAME = "DataSaver";

private EntityPlayer player;

private int level, xplevel;

public DataSaver(EntityPlayer player)
{
	this.player = player;
	this.level = this.xplevel = 0;
}

public static void register(EntityPlayer player)
{
	player.registerExtendedProperties(DataSaver.EXT_PROP_NAME, new DataSaver(player));
}


public static DataSaver get(EntityPlayer player)
{
	return (DataSaver) player.getExtendedProperties(EXT_PROP_NAME);
}

@Override
public void saveNBTData(NBTTagCompound compound)
{

	NBTTagCompound properties = new NBTTagCompound();


	properties.setInteger("CurrentLevel", this.level);
	properties.setInteger("XpLelvel", this.xplevel);


	compound.setTag(EXT_PROP_NAME, properties);
}

// Load whatever data you saved
@Override
public void loadNBTData(NBTTagCompound compound)
{

	NBTTagCompound properties = (NBTTagCompound) compound.getTag(EXT_PROP_NAME);

	this.level = properties.getInteger("CurrentLevel");
	this.xplevel = properties.getInteger("XpLelvel");

}


@Override
public void init(Entity entity, World world)
{

}

public void printInfo()
{
	System.out.println("[Xp Player] XpTotal:" + this.xplevel);
	System.out.println("[Xp Player] Level:" + this.level);
}

public int returnXpLevel()
{
	return this.xplevel;
}

public int returnLevel()
{
	return this.level;
}




public void addXpToPlayer(int xp)
{
	this.xplevel+=xp;
	int xptotal=this.xplevel;
	//Xp / mob: y=2 +(x/5)^1.902
	//Xp to up lvl y=10+(2+(x/5)^1.4)^3
	//Math.pow(a,b) => a^b
	//this.level=10+(int)Math.pow(Math.pow(xptotal/5, 1.4)+2, 1.4);
	if(xptotal>=19)
	this.level=(int)(5*Math.pow(Math.pow(xptotal-10, 0.333)-2, 0.714));
	else this.level=0;
	System.out.println("[Xp Player] Test equation:" + Math.pow(xptotal-10, 0.33));

	System.out.println("[Xp Player] XpTotal:" + this.xplevel);
	System.out.println("[Xp Player] Level:" + this.level);
}



public void resetxp()
{
	this.xplevel=0;
	this.level=0;

	System.out.println("[Xp Player] XpTotal:" + this.xplevel);
	System.out.println("[Xp Player] Level:" + this.level);
}

}

 

GuiXpBar

public class GuiXpBar extends Gui
{

  private Minecraft mc;
  NBTTagCompound nbt;
  EntityPlayer p;
  private static final ResourceLocation texture = new ResourceLocation(RefStrings.MODID + ":" + "textures/gui/bar.png");

  public GuiXpBar(Minecraft mc)
  {
    super();
    
    this.mc = mc;
  }

  


  @SubscribeEvent
  public void onRenderExperienceBar(RenderGameOverlayEvent event)
  {

    if(event.isCancelable() || event.type != ElementType.EXPERIENCE)
    {      
      return;
    }

    p = mc.thePlayer;
    nbt = p.getEntityData();

DataSaver props = DataSaver.get(this.mc.thePlayer);
          
        int xPos = 2;
  		int yPos = 2;
  		this.mc.getTextureManager().bindTexture(texture);


  		GL11.glEnable(GL11.GL_BLEND);
  		GL11.glDisable(GL11.GL_DEPTH_TEST);
  		GL11.glDepthMask(false);
  		GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
  		GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
  		GL11.glDisable(GL11.GL_ALPHA_TEST);

  		drawTexturedModalRect(xPos, yPos, 0, 0, 64, 5);

  		int xpbarwidth = (int)(((float) props.returnXpLevel() / props.returnLevel()) * 49);
  		//drawTexturedModalRect(xPos + 3, yPos + 3, 0, 9, xpbarwidth, 3);
  		String s = "Level:" + props.returnLevel();
  		yPos += 10;
  		this.mc.fontRenderer.drawString(s, xPos + 1, yPos, 0);
  		this.mc.fontRenderer.drawString(s, xPos - 1, yPos, 0);
  		this.mc.fontRenderer.drawString(s, xPos, yPos + 1, 0);
  		this.mc.fontRenderer.drawString(s, xPos, yPos - 1, 0);
  		this.mc.fontRenderer.drawString(s, xPos, yPos, 8453920);

  		GL11.glDisable(GL11.GL_BLEND);
  		GL11.glEnable(GL11.GL_DEPTH_TEST);
  		GL11.glDepthMask(true);
  }
}

Ok thanks I will check how to do that!