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I have command blocks on my adventure map, the map is partially parkour and has no ground just floating islands, I don't want people too see the command blocks so I put them 200 blocks away and they're supposed to have low render distance but if they have low render distance it won't load and the commands won't be executed, what do i do?

  • For the command to be executed, one person has to be pretty close to it (unless you leave a very long trail of Redstone dust). As long as one player is near it, the command will be executed. – Nick B. Jul 7 '15 at 13:46
  • Why does the render distance need to be low? Couldn't you just make the command blocks underground, under a floor or on the top? – nelson2tm Jul 7 '15 at 14:54
  • AFAIK you could just place the command blocks in the spawn chunks. They are always loaded (as long as the world is loaded) and are usually used for similar purposes. – GiantTree Jul 7 '15 at 15:23
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Put them in the Spawn Chunks

The Spawn Chunks are a 16×16 set of chunks centered around your world spawn. These chunks are loaded at all times, unless no player has been in the overworld in the last 60 seconds*.

While some mechanisms are not processed when no player is around, such as plant growth or entities, redstone and command blocks are executed normally.

* According to the wiki. However, I have not been able to observe the unloading of the chunks on 1.8.7 in a singleplayer test world. IIRC SP is functionally identical to MP.

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The only option would be to tell the player to set the render distance to at least 13 chunks. This will make sure the Command Blocks stay rendered, and allows them to execute commands. Here is a list if you've placed any command blocks further than 208 blocks:

Source

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Another thing that may interest you is make a downloadable texture pack, and change the texture of the command block and whatever else you are using to something like dirt. That way the player has no way of knowing that what they are standing on is a command block, unless they switch gamemodes.

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