import buildcraft.api.transport.IPipeConnection; //导入依赖的package包/类
/**
 * Returns a list of adjacent pipes.
 * 
 * @param world
 * @param blockPos
 * @return
 */
public static ForgeDirection[] getPipeDirections(World world, Vect blockPos, ForgeDirection from) {
	LinkedList<ForgeDirection> possiblePipes = new LinkedList<ForgeDirection>();

	for(ForgeDirection dir : ForgeDirection.VALID_DIRECTIONS) {
		if(from != ForgeDirection.UNKNOWN && from != dir.getOpposite())
			continue;
		
		Position posPipe = new Position(blockPos.x, blockPos.y, blockPos.z, dir);
		posPipe.moveForwards(1.0);

		TileEntity pipeEntry = world.getBlockTileEntity((int) posPipe.x, (int) posPipe.y, (int) posPipe.z);

		if (pipeEntry instanceof IPipeEntry && ((IPipeEntry) pipeEntry).acceptItems()) {
			if(from != ForgeDirection.UNKNOWN && pipeEntry instanceof IPipeConnection) {
				if(((IPipeConnection)pipeEntry).isPipeConnected(from))
					possiblePipes.add(dir);
			} else
				possiblePipes.add(dir);
		}
	}

	return possiblePipes.toArray(new ForgeDirection[0]);

}
 

import buildcraft.api.transport.IPipeConnection; //导入依赖的package包/类
public static ForgeDirection[] getPipeDirections(World world, BlockPosition blockPos, ForgeDirection from) {
	LinkedList<ForgeDirection> possiblePipes = new LinkedList<ForgeDirection>();

	for (ForgeDirection dir : ForgeDirection.VALID_DIRECTIONS) {
		if (from != ForgeDirection.UNKNOWN && from != dir.getOpposite()) {
			continue;
		}

		Position posPipe = new Position(blockPos.x, blockPos.y, blockPos.z, dir);
		posPipe.moveForwards(1.0);

		TileEntity pipeEntry = world.getTileEntity((int) posPipe.x, (int) posPipe.y, (int) posPipe.z);

		if (pipeEntry instanceof IPipe && ((IPipe) pipeEntry).getTile().canInjectItems(from)) {
			if (from != ForgeDirection.UNKNOWN && pipeEntry instanceof IPipeConnection) {
				if (((IPipe) pipeEntry).getTile().isPipeConnected(from)) {
					possiblePipes.add(dir);
				}
			} else {
				possiblePipes.add(dir);
			}
		}
	}

	return possiblePipes.toArray(new ForgeDirection[possiblePipes.size()]);

}
 

import buildcraft.api.transport.IPipeConnection; //导入依赖的package包/类
public static boolean canInterfaceWith(TileEntity tile, ForgeDirection side) {
    if (tile instanceof IRelocator) {
        return ((IRelocator) tile).connectsToSide(side.ordinal());
    } else if (Mods.IS_COFH_TRANSPORT_API_LOADED && tile instanceof IItemDuct) {
        return true;
    } else if (Mods.IS_BC_TRANSPORT_API_LOADED && tile instanceof IPipeTile) {
        if (((IPipeTile) tile).getPipeType() == IPipeTile.PipeType.ITEM)
            return true;
    } else if (Mods.IS_BC_TRANSPORT_API_LOADED && tile instanceof IPipeConnection) {
        return ((IPipeConnection) tile).overridePipeConnection(IPipeTile.PipeType.ITEM, side) != IPipeConnection.ConnectOverride.DISCONNECT;
    } else if (tile instanceof IInventory) {
        return !(tile instanceof ISidedInventory) || ((ISidedInventory) tile).getAccessibleSlotsFromSide(side.ordinal()).length > 0;
    }
    return false;
}