Minecraft – How to give a player an effect when standing bedrock

minecraft-commandsminecraft-java-edition

I'm making a map. And I want to give the player levitation when standing on bedrock.

I tried this command:

execute @p ~ ~ ~ detect ~ ~-1 ~ minecraft:bedrock effect @a minecraf:levitation 30

But I constantly get this error:

[13:02:26] Failed to execute 'detect' as F1NN3RT

What am I doing wrong?

Best Answer

The syntax of execute detect is:

/execute <entity> <x> <y> <z> detect <x> <y> <z> <block> <dataValue|blockState> <command>

You need a data value or block state (e.g: 0 or default) after minecraft:bedrock.

You've missed the t in minecraf:levitation.

You're also executing from @p but affecting @a. This would mean that if the closest player to the command block stands on bedrock, everyone will get levitation. Instead, you should make everyone (/execute @a) give themselves levitation (/effect @a[c=1], to select theirself even if they're dead).

Try:

execute @a ~ ~ ~ detect ~ ~-1 ~ minecraft:bedrock 0 effect @a[c=1] minecraft:levitation 30

Related Solutions

Minecraft: How to give an effect to a certain player standing on a block on multiplayer

The reason it is selecting the closest player to the command block is because you have set the selector to @p, which selects the closest player to the command block to fit the rule...

You're better off selecting everybody who the rule fits to run the command on.

/execute @a[r=10000] ~ ~ ~ detect ~ ~-1 ~ wool 15 effect @p invisibility 12 3 true

This command executes the /effect command on everybodybody who is within 10,000 blocks of your command block and has a Black Wool block under their feet.

Also, when specifying the command to run, you do not need a second slash.
Secondly, don't forget to run this command in a redstone clock!

Minecraft – How to use an execute command to test for an item/s in a chest

In order to target that player afterwards, you must use CommandStats to track the success of a command.

Prerequisites:

Objective to hold the return value.

/scoreboard objectives add AboveChest dummy

Applying the "AffectedBlocks" trigger to all players, who will then set their own "AboveChest" score depending on the success of block-related commands. This may need to run on a clock if new players can join at any time.

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

In order for CommandStats to modify a target's score, that target must be tracked prior. This may also need to run on a clock.

/scoreboard players add @a AboveChest 0

Clock commands:

The following must be run on a clock in numerical order.

Cause players to run a /testforblock to find the chest. If the command is successful, that player will have their "AboveChest" score set to 1. If unsuccessful, that player will have their score set to 0.
```
/execute @a ~ ~ ~ testforblock ~ ~-1 ~ minecraft:chest -1 {Items:[{id:"minecraft:stone",Count:64b,Slot:0b}]}
```

Target players based on their "AboveChest" score.

/say @a[score_AboveChest_min=1] is above a chest containing a stack of 64 stone.