Reapply Bad Omen if a player drinks milk until player triggers a raid?

I can't seem to figure out how to test if the player has started a raid with commands.

I'm trying to make it so the bad omen status effect is not removed by milk as any other potion effect would be. So I am able to test for the effect:

scoreboard objectives add BadOmen dummy
execute as @a[nbt={ActiveEffects:[{Id:31b}]}] run scoreboard players set @s BadOmen 1

Through scoreboards I plan to reapply it using:

execute at @a[scores={BadOmen=1}] run effect give @s minecraft:bad_omen 999999 1

But there are two issues. First, I realized I don't know how to end it. I would like to end it only when a raid is triggered, but if I just reapply it whenever the player no longer has it, that would persist even after the player triggers a raid. Also I would like to reapply the same level of bad omen (which I assume uses the "lvl:0" tag). I would also like to do this with Hero of the Village but I assume I can reuse the commands.

1 Answer

Caveats

• With the following methods, Death and Totem of Undying are both ways to get ride of both effects

Avoiding clearing Bad Omen

First, We create a scoreboard to track when a player drinks milk and track who has the effect:

/scoreboard objectives add milk minecraft.used:minecraft.milk_bucket
/scoreboard objectives add bad_omen dummy

To prevent a player from using milk to remove the effect, we will do 3 steps:

• Mark who has the effect, setting their bad_omen score to the level of the effect. We will need one block of command for each level, you can only get up to level V (5) in vanilla.
• Apply the effect in anyone who has at least score 1 of bad_omen
• Reset milk and bad_omen (In case the bad omen effect ran out naturally, either because of time or raid)

So we translate those to:

Step 1:

/execute as @a[nbt={ActiveEffects:[{Id:31b,Amplifier:0b}]}] run scoreboard players set @s bad_omen 1
/execute as @a[nbt={ActiveEffects:[{Id:31b,Amplifier:1b}]}] run scoreboard players set @s bad_omen 2
/execute as @a[nbt={ActiveEffects:[{Id:31b,Amplifier:2b}]}] run scoreboard players set @s bad_omen 3
/execute as @a[nbt={ActiveEffects:[{Id:31b,Amplifier:3b}]}] run scoreboard players set @s bad_omen 4
/execute as @a[nbt={ActiveEffects:[{Id:31b,Amplifier:4b}]}] run scoreboard players set @s bad_omen 5

Step 2:

/execute as @a[scores={bad_omen=1,milk=1}] run effect give @s minecraft:bad_omen 999999 0
/execute as @a[scores={bad_omen=2,milk=1}] run effect give @s minecraft:bad_omen 999999 1
/execute as @a[scores={bad_omen=3,milk=1}] run effect give @s minecraft:bad_omen 999999 2
/execute as @a[scores={bad_omen=4,milk=1}] run effect give @s minecraft:bad_omen 999999 3
/execute as @a[scores={bad_omen=5,milk=1}] run effect give @s minecraft:bad_omen 999999 4

Step 3:

/scoreboard players set @a milk 0
/execute as @a unless entity @s[nbt={ActiveEffects:[{Id:31b}]}] run scoreboard players set @s bad_omen 0

Also, responding to your extra question, the way to dettect lvl is actually using Amplifier:<N>b where N is the level of the effect starting from 0.

Avoiding clearing Hero of the Village

We will need:

/scoreboard objectives add HeroTime dummy
/scoreboard objectives add HeroLevel dummy

For that we do:

• Decrease one from the player HeroTime
• Check if he has HeroTime 0 and potion effect. If so, store his lvl and set his time to 24 minutes
• If he has HeroTime bigger than 0, reapply effect
• If his HeroTime is exactly 1, we clear the effect. This command needs to be at the end. As soon as the next cycle begins, the person with HeroTime of 1 will have 0 (Because of Step 1)

Translation:

Step 1:

/execute as @a[scores={HeroTime=1..}] run scoreboard players remove @s HeroTime 1

Step 2.1:

/execute as @a[nbt={ActiveEffects:[{Id:32b,Amplifier:0b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroLevel 0
/execute as @a[nbt={ActiveEffects:[{Id:32b,Amplifier:0b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroLevel 1
/execute as @a[nbt={ActiveEffects:[{Id:32b,Amplifier:0b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroLevel 2
/execute as @a[nbt={ActiveEffects:[{Id:32b,Amplifier:0b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroLevel 3
/execute as @a[nbt={ActiveEffects:[{Id:32b,Amplifier:0b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroLevel 4

Step 2.2:

/execute as @a[nbt={ActiveEffects:[{Id:32b}]}] unless score @s HeroTime matches 1.. run scoreboard players set @s HeroTime 28800

Step 3:

/execute as @a[scores={HeroTime=1..,HeroLevel=0}] run effect give @s minecraft:hero_of_the_village 9999 0
/execute as @a[scores={HeroTime=1..,HeroLevel=1}] run effect give @s minecraft:hero_of_the_village 9999 1
/execute as @a[scores={HeroTime=1..,HeroLevel=2}] run effect give @s minecraft:hero_of_the_village 9999 2
/execute as @a[scores={HeroTime=1..,HeroLevel=3}] run effect give @s minecraft:hero_of_the_village 9999 3
/execute as @a[scores={HeroTime=1..,HeroLevel=4}] run effect give @s minecraft:hero_of_the_village 9999 4

And step 4:

/execute as @a[scores={HeroTime=1}] run effect clear @s minecraft:hero_of_the_village