Examples of net.minecraft.item.Item.onItemUseFirst()

        ForgeEventFactory.onPlayerInteract(player, Action.RIGHT_CLICK_AIR, coords.posX, coords.posY, coords.posZ, side,worldObj);
        Entity entity = detectedEntities.isEmpty() ? null : detectedEntities.get(worldObj.rand.nextInt(detectedEntities.size()));
        done = entity != null && entity instanceof EntityLiving && (item.itemInteractionForEntity(stack, player, (EntityLivingBase) entity) || (!(entity instanceof EntityAnimal) || ((EntityAnimal) entity).interact(player)));


        if (!done)
          item.onItemUseFirst(stack, player, worldObj, coords.posX, coords.posY, coords.posZ, side, 0F, 0F, 0F);
        if (!done)
          done = block != null && block.onBlockActivated(worldObj, coords.posX, coords.posY, coords.posZ, player, side, 0F, 0F, 0F);
        if (!done)
          done = item.onItemUse(stack, player, worldObj, coords.posX, coords.posY, coords.posZ, side, 0F, 0F, 0F);
        if (!done) {

                    boolean done=false;
                    FakePlayer player=FakePlayerFactory.getMinecraft((WorldServer)worldObj);
                    Item item=inventorySlots[0].getItem();
                    ItemStack stack=inventorySlots[0];
                    if (!done)
                        item.onItemUseFirst(stack, player, worldObj, x, y, z, ForgeDirection.OPPOSITES[orientation], 0F, 0F, 0F);
                    if (!done)
                        done = item.onItemUse(stack, player, worldObj, x, y, z, ForgeDirection.OPPOSITES[orientation], 0F, 0F, 0F);
                    if (!done) {
                        item.onItemRightClick(stack, worldObj, player);
                        done = true;