minecraft-java-edition
Is there some way to move a massive building from underwater to above water in Minecraft? I suspect the answer is pistons, but how would I push the building more than one block? And would the water blocks covering the building stay on top of if after the building is out of water? How would I stop it after it is at surface level?
This will be on a private server, where I am admin. Bukkit will be used, in case someone knows a plugin to do this.
This is a bug in the 1.9 pre-release (not sure if just pre-release 3, or all of them).
As you can see here:
It's working as you intended it to in 1.8.1
While Ronan's answer will probably suffice in this situation, it will not be completely accurate. If you want a device that will pulse exactly 10 times, you can create a sort of counter with pistons. Here's the basic design:
This device uses a set of pistons to pulse a set number of times, then stop. Here's what the piston device looks like:
The glass block does not conduct redstone power, so the repeater does not power "through" it. All the stone blocks do conduct power, though, so those will be powered by the repeater. The pistons are set up to cycle through the blocks once the system is started, and it will stay on until the glass block becomes active.
These are the device's input and output. The lever overrides the glass block and turns the device on. The redstone line on the left will then pulse exactly 10 times before stopping. Note that the device will not stop if the lever remains on, so it might be a good idea to hook up a pulse limiter/extender to the input to keep the machine from malfunctioning.
Additionally, the speed of the pulses are determined by the clock seen in the first picture. By changing how fast the clock moves, you can adjust how often the output pulses. Note that I used all 1-tick repeaters to keep the length of the tick at about 2 redstone ticks, not extended to 4. If you're making it run more slowly, though, that's not necessary.
Best Answer
If you don't mind "cheating", the easiest way would most likely be using MCEdit or WorldEdit. If this building is massive like you say, it would take a very, very long time to move it above ground using pistons. If you really wanted to do this, though, you would put a piston under a block, activate it with a lever, place a block in the new empty space, and repeat. Unfortunately, since you are supposedly underwater, this would be very difficult.
However, I have done testing, and if you were to push a column of blocks up using a piston and one of them is a water source block, the water simply disappears.
Edit: Now that I see you're an admin on a Minecraft server, I'll give you WorldEdit instructions. To use WorldEdit, first install it on your server. Then use the
//wandcommand to give yourself a Wooden Axe. Use this to left-click on the bottom-leftmost block of your building, and right-click on the top-rightmost block. This encloses your building in a "selection". From there, you can//copyand//pasteit wherever you please.