Hello everyone, I am a novice to Forge API. I'm following the tutorials on wiki. Now I'm working on this one:

http://www.minecraftforge.net/wiki/Gui_Overlay.

 

When I try to access the texture file saved in the folder of my mod, it works well.

package tutorial.generic.client;

import java.util.Collection;
import java.util.Iterator;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.potion.Potion;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.event.RenderGameOverlayEvent;
import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;
import net.minecraftforge.event.EventPriority;
import net.minecraftforge.event.ForgeSubscribe;

import org.lwjgl.opengl.GL11;

//
// GuiBuffBar implements a simple status bar at the top of the screen which 
// shows the current buffs/debuffs applied to the character.
//
public class GuiBuffBar extends Gui
{
  private Minecraft mc;

  public GuiBuffBar(Minecraft mc)
  {
    super();
    
    // We need this to invoke the render engine.
    this.mc = mc;
  }

  private static final int BUFF_ICON_SIZE = 18;
  private static final int BUFF_ICON_SPACING = BUFF_ICON_SIZE + 2; // 2 pixels between buff icons
  private static final int BUFF_ICON_BASE_U_OFFSET = 0;
  private static final int BUFF_ICON_BASE_V_OFFSET = 198;
  private static final int BUFF_ICONS_PER_ROW = 8;
  
  //
  // This event is called by GuiIngameForge during each frame by
  // GuiIngameForge.pre() and GuiIngameForce.post().
  //
  @ForgeSubscribe(priority = EventPriority.NORMAL)
  public void onRenderExperienceBar(RenderGameOverlayEvent event)
  {
    // 
    // We draw after the ExperienceBar has drawn.  The event raised by GuiIngameForge.pre()
    // will return true from isCancelable.  If you call event.setCanceled(true) in
    // that case, the portion of rendering which this event represents will be canceled.
    // We want to draw *after* the experience bar is drawn, so we make sure isCancelable() returns
    // false and that the eventType represents the ExperienceBar event.
    if(event.isCancelable() || event.type != ElementType.EXPERIENCE)
    {      
      return;
    }

    // Starting position for the buff bar - 2 pixels from the top left corner.
    int xPos = 2;
    int yPos = 2;
    Collection collection = this.mc.thePlayer.getActivePotionEffects();
    if (!collection.isEmpty())
    {
      GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
      GL11.glDisable(GL11.GL_LIGHTING);      
      this.mc.func_110434_K().func_110577_a(new ResourceLocation("generic:/textures/gui/inventory.png")); //problem on this line.     

      for (Iterator iterator = this.mc.thePlayer.getActivePotionEffects()
          .iterator(); iterator.hasNext(); xPos += BUFF_ICON_SPACING)
      {
        PotionEffect potioneffect = (PotionEffect) iterator.next();
        Potion potion = Potion.potionTypes[potioneffect.getPotionID()];

        if (potion.hasStatusIcon())
        {
          int iconIndex = potion.getStatusIconIndex();
          this.drawTexturedModalRect(
              xPos, yPos, 
              BUFF_ICON_BASE_U_OFFSET + iconIndex % BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE, BUFF_ICON_BASE_V_OFFSET + iconIndex / BUFF_ICONS_PER_ROW * BUFF_ICON_SIZE,
              BUFF_ICON_SIZE, BUFF_ICON_SIZE);
        }       
      }
    }
  }
}

 

But actually, "Inventory.png" is exactly what I have copied from "assets.minecraft.textures.gui.container" in referenced library "1.6.2.jar".

 

However, when I try this:

  ......

  this.mc.func_110434_K().func_110577_a(new ResourceLocation("minecraft:/textures/gui/container/inventory.png"));

  ......

 

There would be:

"2013-07-22 21:52:09 [WARNING] [Minecraft-Client] Failed to load texture: minecraft:/textures/gui/container/inventory.png"

output in console.

 

Any response will be appreciated. Thanks.

Having a similar issue. How does one reference to a png in "assets/modid/textures/gui/gui.png" using a ResourceLocation?

Nevermind I found it. I used "new ResourceLocation(UniversalCoins.modid, "textures/gui/tradeStation.png")"