import net.minecraft.item.ItemEgg; //导入依赖的package包/类
public boolean isThrowable() {
	if (item instanceof ItemBow || item instanceof ItemSnowball || item instanceof ItemEgg
			|| item instanceof ItemEnderPearl || item instanceof ItemSplashPotion
			|| item instanceof ItemLingeringPotion || item instanceof ItemFishingRod) {
		return true;
	}
	return false;
}
 

import net.minecraft.item.ItemEgg; //导入依赖的package包/类
@Override
public ActionResult<ItemStack> onItemRightClick(World worldIn, EntityPlayer playerIn, EnumHand hand) {
	ItemStack stack = playerIn.getHeldItem(hand);
	if (playerIn.isSneaking() && hand == EnumHand.MAIN_HAND) {
		/*
		}
		for (int i = 0; i < 5; ++i) {
			RayTraceResult rayTrace = playerIn.rayTrace(i, 1.0F);
			if (rayTrace != null) {
				BlockPos pos = rayTrace.getBlockPos();
				EnumFacing side = rayTrace.sideHit;
				float hitX = (float) rayTrace.hitVec.xCoord;
				float hitY = (float) rayTrace.hitVec.yCoord;
				float hitZ = (float) rayTrace.hitVec.zCoord;
				IBlockState state = worldIn.getBlockState(pos);
				Block block = state.getBlock();
				boolean flag = block.onBlockActivated(worldIn, pos, state, playerIn, hand, itemStackIn, side, hitX, hitY, hitZ);
				if (rayTrace.getBlockPos() != null && (flag || block != Blocks.AIR || block instanceof ITileEntityProvider || (!flag && block.hasTileEntity(state)))) {
				if (rayTrace.getBlockPos() != null && (block != Blocks.AIR || block instanceof ITileEntityProvider || block.hasTileEntity(state))) {
					return new ActionResult<ItemStack>(EnumActionResult.SUCCESS, itemStackIn);
				}
			}
		}
		*/
		ModGuiHandler.launchGui(GUIType.DANKNULL, playerIn, worldIn, (int) playerIn.posX, (int) playerIn.posY, (int) playerIn.posZ);
		return new ActionResult<ItemStack>(EnumActionResult.FAIL, stack);
	}
	else {
		if (!worldIn.isRemote) {
			InventoryDankNull inventory = new InventoryDankNull(stack);
			ItemStack selectedStack = DankNullUtils.getSelectedStack(inventory);

			if ((selectedStack.getItem() instanceof ItemSnowball) || (selectedStack.getItem() instanceof ItemEnderPearl) || (selectedStack.getItem() instanceof ItemEgg)) {
				//TODO soon!
				return new ActionResult<ItemStack>(EnumActionResult.FAIL, stack);
			}

			EntityPFakePlayer fakePlayer = EntityPFakePlayer.getFakePlayerForParent(playerIn);
			if (fakePlayer.interactionManager.getGameType() != GameType.NOT_SET) {
				fakePlayer.interactionManager.setGameType(GameType.NOT_SET);
			}
			fakePlayer.setHeldItem(EnumHand.MAIN_HAND, selectedStack);
			fakePlayer.setItemInHand(selectedStack);
			fakePlayer.posX = playerIn.posX;
			fakePlayer.posY = playerIn.posY;
			fakePlayer.posZ = playerIn.posZ;
			fakePlayer.setRotationYawHead(playerIn.rotationYawHead);
			fakePlayer.rotationYaw = playerIn.rotationYaw;
			fakePlayer.rotationPitch = playerIn.rotationPitch;
			fakePlayer.eyeHeight = playerIn.eyeHeight;

			if (selectedStack.copy().getItem().onItemRightClick(worldIn, fakePlayer, hand).getType() == EnumActionResult.SUCCESS) {
				DankNullUtils.decrSelectedStackSize(inventory, 0);
			}
			return new ActionResult<ItemStack>(EnumActionResult.FAIL, stack);
		}
	}
	return new ActionResult<ItemStack>(EnumActionResult.SUCCESS, stack);
}
 

import net.minecraft.item.ItemEgg; //导入依赖的package包/类
private boolean isThrowable(Item item) {
	return item instanceof ItemBow || item instanceof ItemSnowball
			|| item instanceof ItemEgg || item instanceof ItemEnderPearl;
}
 

import net.minecraft.item.ItemEgg; //导入依赖的package包/类
/** Alters behaviour when player picks up an item. */
@SubscribeEvent
public void playerItemPickup(EntityItemPickupEvent event) {
    
    EntityPlayer player = event.getEntityPlayer();
    
    ItemStack stack = event.getItem().getEntityItem();
    Item item = stack.getItem();
    
    // Special case for laid eggs
    if (item instanceof ItemEgg) {
        
        int count = stack.getCount();
        stack = ItemSimple.newStack(GeoItems.EGG, count, player.world);
    }

    if (player.getCapability(GeoCaps.CAP_PLAYER, null).canPickup(item)) {
        
        stack = ContainerInventory.add(player, stack);
    }

    if (stack.isEmpty()) {

        event.getItem().setDead();

    } else {
        
        event.getItem().setEntityItemStack(stack);
    }

    event.setCanceled(true);
}