How to detect a player close to a specific block Minecraft 1.9
I am doing a troll to my friend, but I am not very good at commands. I am trying like to replace diamond ore/blocks in a radius of 5 around him with stone. I tried it with /execute and /testfor but it either didn't work or work but not very well (one had bugs and didn't change the block). I don't have my command because I deleted the world.
Best Answer
To do this, create two repeating command blocks containing the following commands:
Command one:
/execute YourFriendsName ~ ~ ~ /fill ~-5 ~-5 ~-5 ~5 ~5 ~5 stone 0 replace diamond_ore
Command two:
/execute YourFriendsName ~ ~ ~ /fill ~-5 ~-5 ~-5 ~5 ~5 ~5 stone 0 replace diamond_block
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How do you detect if a player is on a specific block in Minecraft?
The blank is for the particular block you are looking for. Let's say you're lost in the Nether and need to find your Nether Portal, you could type : /locateblock obsidian, and get the coordinates for the nearest obsidian, most likely being your, said, Portal.Detect When A Player Is At A Block/Blocks Minecraft
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Answer 2
You can place a command block behind it or below it (but make sure it isn't in sight).
In 1.9 and above, you can change it to a repeating command block (purple-colored) and make it always active, unless you want to manually enable it. In order to do that, keep it redstone-powered and place a lever.
In 1.8.9 or below, place a comparator clock like this:
Credits to [Martin1704] on the Minecraft Forums for the image.2
Finally, type in this command:
/execute @a[r=5] ~ ~ ~ /setblock x y z minecraft:stone
Replace "x y z" with the coordinates.
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