It seems he's using World Edit for the PC and porting it. But, if he can port it, then he must be using MCEdit to port it. He could just use MCEdit for the entire thing.
He has to measure how tall the sand walls will be, and find a way for the water to split up into four directions to release them all walls at teh same time. And still yet, he needs to add the floating lobby for players.
I have cancelled this map, as I could not find a way to get the water to split into four directions. Even if I did, there would be massive lag due to that much sand falling at once. Since I didn't complete this, I have made Minecraft Pocket Edition's first blade boss fight. It is my first successful map.
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