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So I'm pretty new to testfor still and I would like to know how to create a commandblock system that would detect when they are standing on a yellow wool block on the coordinates 400 4 600 (for example) does anyone know how to setup this redstone suystem, and also be specific about how I set the redstone system up, so for example show me a picture on how the setup of it would look like.

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You'll need a redstone clock with a command block as shown below: How to set up

In the command block add the command /testfor @a[x=400,y=4,z=Z,r=600] and start up your clock. When ever a user is at that location, the red output line as shown in the picture will power. Once they have left the position, the output will power off.

  • This will test for players at that location, but not whether or not they are standing on yellow wool. – SirBenet Mar 25 '15 at 18:57
  • But if the yellow wool is at that location, surely it'll be fine. OP hasn't mentioned the wool moving? – ConnorMcF Mar 25 '15 at 19:32
  • Depends; OP's question isn't really clear about it. It could be that the yellow wool just happens to be at those coords and it isn't necessary to detect it, but I understood it as only wanting to detect people who are standing on yellow wool, which may or may not be at those coords. – SirBenet Mar 25 '15 at 21:26
  • I only wanted to know if I could use testfor to see if a certain person is standing on a not moving yellow block wool, so the yellow block wool is solid, so if someone is standing on the yellow block wool, will the command then activate the redstone system and the command within the /testfor itself? – Minecraft Doge Mar 27 '15 at 8:43
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You can try a command like this:

execute @a[x=400,y=4,z=600] ~ ~ ~ detect ~ ~-1 ~ minecraft:wool 4 [Command]

For [Command], you can do something like scoreboard players set @p dummyobjective 1

Then execute @a[score_dummyobjective_min=1] ~ ~ ~ [command]

But those last two lines are usually only needed if you want to run multiple commands, or to keep track of multiple players.

  • I'm not really familia with the redstone system that is used for execute, would you be able to show me a picture on how it would activate exactly, and what redstone system would be used for it? – Minecraft Doge Mar 27 '15 at 9:08
  • Not currently, but if you give me a while I can. I'm not able to play at the moment. If you could supply what you want to do when a player stands on the block, I can fill in the command for you. After that, it's just a matter of having a redstone clock activate a command block with the command above inside of it. – A.J. Ruckman Mar 27 '15 at 14:40
  • Also, if you want the command to activate no matter where he is in the world, just remove the '[x=400,y=4,z=600]'. – A.J. Ruckman Mar 27 '15 at 14:41
  • Give me a picture of the redstone system I would be using for this command – Minecraft Doge Mar 27 '15 at 16:20

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