Minecraft – How to get the coordinates of a player in Multiplayer

minecraft-commandsminecraft-java-edition

I'm trying to make something like a snitch that tells you where you are and if you are in the radius of a block, but the only thing that's missing is finding the coordinates of a player so I can see where they entered the area.
I already got the player-detecting part done – finding their coordinates is the only thing left to do.

The server I'm on is 1.12.2, and I'm OP on it. I don't want to use scoreboards for it if possible.

Best Answer

This process is very simple in 1.13+, you only need to use /execute store together with /data get to store a player's "Pos" array into three scores (instructions see here). But 1.12 has neither of these commands, so you need to do something called a "binary search" through the entire world.

How this works: You first select half of the world, for example from X=0 to X=30000000 and check whether the player is in it (using the x, y, z, dx, dy, dz selector arguments). If the player is in the negative half, you continue there, otherwise in the positive half. There you select half of the remaining world again, in this case for example from X=0 to X=15000000. After that you can half the search area again and again, until after just 27 steps you have narrowed down this 60 million block range into less than one block range. And you can continue, if you want the position to be even more precise. Then you do the same for Y and Z, after 62 steps you have all three coordinates precise to one block and can put it into a scoreboard.

But it's still quite a lot of effort to write down all of these commands, so luckily someone did it for you and made a datapack: https://www.reddit.com/r/Minecraft/comments/6id4k0/112_coordinate_finder_function/ (datapack archive)

Related Solutions

Minecraft Java Edition – How to Detect a Block Around the Player More Easily

You can use a filtered /clone command that will copy blocks to their same position. The result is no difference visually, but the command can return a CommandStat value depending on its success.

Prerequisites:

Objective to hold the returned CommandStat value.

/scoreboard objectives add BLOCKS dummy

Applying the AffectedBlocks trigger to players, so that when they run commands, their own "BLOCKS" score will be set equal to the number of blocks affected. You may need this on a clock if new players can join at any time.

/stats entity @a set AffectedBlocks @a[c=1] BLOCKS

In order for CommandStats to modify a target's score, they must be tracked on the scoreboard prior. This may need to be on a clock as well.

/scoreboard players add @a BLOCKS 0

Clock commands:

The following must be run in order on a clock.

Cause players to run a /clone command around them, looking for grass specifically. It will be cloned to the same position that they're already in. This will return either the number of grass blocks found or 0. The target coordinates should be the same as the first specified corner.
```
/execute @a ~ ~ ~ /clone ~-10 ~-1 ~-10 ~10 ~10 ~10 ~-10 ~-1 ~-10 filtered force minecraft:grass
```

Players with a "BLOCKS" score of 1+ has grass around them. You can target them based on this value.

/say @a[score_BLOCKS_min=1] has grass blocks around them.
/say @a[score_BLOCKS_min=10] has at least 10 grass blocks around them.

Minecraft Java Edition Commands – How to Make a Checkpoint System Work in Multiplayer Minecraft 1.9

At the beginning, in order:

/scoreboard objectives add id dummy

/scoreboard players set @r[score_id=0] id 1

/scoreboard players set @r[score_id=0] id 2

/scoreboard players set @r[score_id=0] id 3

...

On checkpoint reached:

/execute @p[score_id=1,score_id_min=1] ~ ~ ~ detect ~ ~-1 ~ minecraft:diamond_ore 0 summon ArmorStand ~ ~ ~ {customName:'1'}

/kill @e[type=ArmorStand,name:'1',rm=3]

(repeat for all players, replacing all the 1's except the middle '~-1' with the player's id)

On fail:

/execute @p[score_id=1,score_id_min=1] ~ ~ ~ detect ~ ~-1 ~ minecraft:lit_redstone_ore 0 tp @p @e[type=ArmorStand,name='1'

(repeat for all players, replacing all the 1's except the right middle '~-1' with the player's id)

Best Answer

Related Solutions

Minecraft Java Edition – How to Detect a Block Around the Player More Easily

Minecraft Java Edition Commands – How to Make a Checkpoint System Work in Multiplayer Minecraft 1.9

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