Minecraft – Execute condition positioned doesnt work

minecraft-commandsminecraft-java-edition

I'm trying to test if an entity is positionned at a very specific coordinate to then and only then tag itself and others.

Here's the command:

execute as @e[type=minecraft:armor_stand,tag=pillar_first,tag=bot] positioned ~ 45.518 ~ at @s run tag @e[type=minecraft:armor_stand,tag=pillar_first] add complete

The command block is litterally ignoring the positionned condition and tags right away.

What have I done wrong?

Best Answer

There are two different problems with the command:

The second at @s repositions the command to the armor stand, negating the previous positioned ~ 45.518 ~.
Target selectors by default have no range limit, so even if the command were positioned correctly, it would still find the armor stand wherever on the map it is.

The corrected command would be:

execute as @e[type=minecraft:armor_stand,tag=pillar_first,tag=bot] at @s positioned ~ 45.518 ~ if entity @s[distance=...1] run tag @e[type=minecraft:armor_stand,tag=pillar_first] add complete

This command checks if the armor stand is within one tenth of a block of the given coordinates, since checking if it is there exactly does not work for reasons I can't figure out. This may not be what you want.

Related Solutions

Minecraft – How to use ~ in /testfor command block

You cannot use the "~" character in selectors, meaning you'd need to rely on command syntax and not selector syntax. You cannot use relative coordinates with /testfor as its command syntax does not support it.

You would instead need to place an entity at the desired position and execute from it relatively using /execute:

/execute <target> X Y Z <command>

"target" is the target entity to change the coordinate origin to, while XYZ is going to further modify the origin. Using relative coordinates would cause "command" to be executed relative from the target's position.

Sample armor stand to create:

/summon ArmorStand X Y Z {Tags:["anchor"]}

For example, assuming there is an armor stand tagged with "anchor" at the intended location, the following tests for players relative to the armor stand:

/execute @e[type=ArmorStand,tag=anchor] ~1 ~4 ~-3 /testfor @a[dx=0,dz=0,dy=102]
/execute @e[type=ArmorStand,tag=anchor] ~1 ~4 ~3 /testfor @a[dx=0,dz=0,dy=102]

Minecraft – How to test for the entity closest to the player

In the future, I recommend checking the wiki before posting a question here.

This is entirely possible using the execute command and target selector variables and arguments.

Executing commands at the player

The execute command executes commands on an entity. The @p selector selects a single player.
The name= argument only selects entities with a specific name.
So execute @p[name=<your username here>] ~ ~ ~ <command> will run <command> at your location.

`testfor` the nearest entity.

The @e selector finds entities of any type.
The c= argument selects a certain count. If this number is positive, it will select these in order from closest to furthest. c=1 will select the nearest entity.
The rm= argument selects only entities outside of a radius. If this is set to 0, it will select any entity that is not the executing entity.
So testfor @e[c=1,rm=0] would find the nearest entity to the executor of the command.

Putting it together

So, the first command will execute the second command at the player, meaning your finished command is

/execute @p[name=] ~ ~ ~ testfor @e[c=1,rm=0]

Closing comments/notes

As far as using testfor goes, I'd recommend against it. The scoreboard is almost always more useful, since you can use things like tag to mark the entity you found.