EntityJS: How to keep mobs from spawning in water | latcord | Page 1

tender laurel Jan 7, 2025, 2:22 PM

#

I've successfully set up some new biome spawns, but I'm noticing the mobs like to spawn in rivers and such adjacent to the defined biomes. How do I prevent them from spawning as swimmers? 🏊‍♂️

sterile hatchBOT Jan 7, 2025, 2:22 PM

#

Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

gloomy mantle Jan 7, 2025, 2:22 PM

#

@slate apex uwu

patent gate Jan 7, 2025, 3:31 PM

#

what spawn conditions do you have setup if any?

#

there’s even spawn placements. are you using them?

#

and note a restart is required to update anything you change after

tender laurel Jan 7, 2025, 3:45 PM

#

My script is just

    event.addSpawn('eanimod:enhanced_mooshroom', ['minecraft:dark_forest', 'biomesoplenty:mystic_grove', 'biomesoplenty:muskeg', 'biomesoplenty:fungal_jungle', 'regions_unexplored:blackwood_taiga', 'regions_unexplored:fungal_fen'], 12, 2, 6);
})```
![hmmm](https://cdn.discordapp.com/emojis/609911633078124558.webp?size=128 "hmmm")

#

I did see there was spawn placements listed on the wiki, but it doesn't mention what any of the things mean

#

And I didn't know what exactly would prevent water spawns

patent gate Jan 7, 2025, 3:52 PM

#

vanilla placement features for world gen but also works with mobs

#

a quick solution is removing those placements for ocean and river

#

after you addSpawn

event.removeSpawn('eanimod:enhanced_mooshroom', ['#minecraft:is_ocean', '#minecraft:is_river']);

#

i should check if bop still uses these tags for biomes, 1 sec

#

also note bop has a crashing issue with bop trees growing

#

and yea bop has updated vanilla tags with it biomes so that will work!

#

if you have issues with that, consult with owner. i never used entityjs 😅

#

aware of datapacks though and thought i can try assisting with my experience

slate apex Jan 7, 2025, 4:24 PM

#

like eazy said you might want to try adding a spawn predicate to prevent that,
Startup Script: js EntityJSEvents.spawnPlacement(event => { event.and('eanimod:enhanced_mooshroom', (entitypredicate, levelaccessor, spawntype, blockpos, randomsource) => { return !levelaccessor.level.getBlock(blockpos).down.blockState.liquid(); }); });
keep in mind im assuming the blockstate we want to check is js .getBlock(blockpos).down
but it might just be the actual block at the blockpos so if that doesnt work then do js .getBlock(blockpos)

patent gate Jan 7, 2025, 4:28 PM

#

is that just second case if not working or does removeSpawn not work the way I expected?

slate apex Jan 7, 2025, 4:29 PM

#

it works basically like an &&, there's also an event.or which will work as an || operand basically

#

so this must be true as well as their default spawn predicate for them to spawn

#

theres also event.replace but it'd be a pain probably to replicate their whole thing (which you could technically ig)

tender laurel Jan 8, 2025, 7:59 AM

#

Thank you for your help, everyone! I fell asleep but will try this all out when I have some free time later today 🙏

tender laurel Jan 8, 2025, 8:44 AM

#

So I tried adding this to another mob (because this one especially loves spawning in water, thought it would make testing easier), but its saying I require a nonnull placement type. I tried it with both the suggestions from Liopyu but the error was the same both times. I'm just confused what it means by "nonull"

The startup script currently:

    event.and('eanimod:enhanced_moobloom', (entitypredicate, levelaccessor, spawntype, blockpos, randomsource) => {
        return !levelaccessor.level.getBlock(blockpos).blockState.liquid();
    });
});```

📎 startup.log

fair turretBOT Jan 8, 2025, 8:44 AM

#

Paste version of startup.log from @tender laurel

tender laurel Jan 8, 2025, 8:53 AM

#

My guess is its throwing an error because this mob doesn't have its own spawn placement normally, so I need to possibly register it as if it was a new mob hmmm

slate apex Jan 8, 2025, 9:47 AM

#

alright so you'll have to do event.replace to register one js event.replace('eanimod:enhanced_moobloom', 'no_restrictions', 'world_surface', (entitypredicate, levelaccessor, spawntype, blockpos, randomsource) => { return !levelaccessor.level.getBlock(blockpos).blockState.liquid(); });

tender laurel Jan 8, 2025, 10:11 AM

#

Oh excellent, I was on the right track then, but even with your script my game locks up whenever a moobloom would spawn. It doesn't crash, the world just stops loading and if I try to quit it gets stuck on saving. hmmm

#

Very strange as they were spawning fine before with just AddSpawn server script, they just liked swimming lol

#

Double checked by removing the startup script entirely and returning to the area that caused the lock up, and it all loads fine again

slate apex Jan 8, 2025, 4:14 PM

#

odd

#

i mean you can try the generic checkSpawned event and see if that works js EntityEvents.checkSpawn('eanimod:enhanced_moobloom', event => { const {entity} = event if (event.type == "NATURAL" && event.block.down.blockState.liquid()) { event.success(false) } })

tender laurel Jan 8, 2025, 5:13 PM

#

Thank you, does this need to be before or after the biomeSpawn script for the mooblooms? Or does it replace it entirely? Looks like there isn't a wiki page for checkSpawn yet so I'm unsure what it does

slate apex Jan 8, 2025, 5:15 PM

#

theres no specific order as long as it's in your server scripts, its supposed to work alongside your biome spawn script to replace the spawnplacement startup script

#

this basically runs on any entity spawn and you can cancel it with event.success(false)

#

we can also check the type of spawn with event.type, we're only affecting natural spawns (biome spawns) so spawn types like eggs or spawners wont be affected

#

and then we just have it detecting if the block below is a liquid or not

#

this still applies, if they're still spawning then just do entity.block.blockstate instead of entity.block.down

tender laurel Jan 8, 2025, 5:18 PM

#

Ahh ok, thank you for explaining. I placed it after the biomeSpawn script just to test it out, and there weren't any lockups or crashes, but I still have some swimmers. The water below them was considered the correct biome at least (lavender fields) 😆 . They are like some tenacious weeds. I will definitely try your suggestion!

tender laurel Jan 8, 2025, 5:27 PM

#

slate apex i mean you can try the generic checkSpawned event and see if that works ```js En...

Ok, I have tried this one as well as

    const {entity} = event
    if (event.type == "NATURAL" && event.block.blockState.liquid()) {
        event.success(false)
    }
})```

But they refuse to stop getting their hooves wet ![despair](https://cdn.discordapp.com/emojis/996357458169692230.webp?size=128 "despair")

slate apex Jan 8, 2025, 5:27 PM

#

they're spawning in water still?

tender laurel Jan 8, 2025, 5:27 PM

#

Yuppers

slate apex Jan 8, 2025, 5:27 PM

#

console.log(event.block) for me

#

also console.log(event.type) for me

#

EntityEvents.checkSpawn('eanimod:enhanced_moobloom', event => {
    const { entity } = event
    console.log(event.type)
    console.log(event.block)
    if (event.type == "NATURAL" && event.block.blockState.liquid()) {
        event.success(false)
    }
})```

tender laurel Jan 8, 2025, 5:54 PM

#

If its not giving any log in the latest.log, should I swap the block.blockState to a block.down.blockState and see if that makes a difference?

#

I mean to say, it is giving a log, but its not saying anything related to the spawn script

#

Just a bunch of unrelated render errors hmmm

fair turretBOT Jan 8, 2025, 6:06 PM

#

Please send your KubeJS server log. It can be found at /minecraft/logs/kubejs/server.log.
If you are on 1.18 or 1.16 it will be called server.txt.
Please send the file directly, without links or snippets.

tender laurel Jan 8, 2025, 6:08 PM

#

Oh oops despair I assumed latest.log because the server.log had barely anything

📎 server.log

fair turretBOT Jan 8, 2025, 6:08 PM

#

Paste version of server.log from @tender laurel

tender laurel Jan 8, 2025, 6:08 PM

#

Tried both variants now, the server log doesn't change

slate apex Jan 8, 2025, 6:16 PM

#

did you save your file and do /kubejs reload server_scripts?

#

and did you wait for a new entity to spawn? this only triggers on entity spawning

tender laurel Jan 8, 2025, 6:18 PM

#

I closed the game, made the change to the script and saved it, restarted the game. Flew around until I saw a moobloom spawn in water (which is what took me so long), and then sent you the log.

#

It doesn't seem to be logging at all though

slate apex Jan 8, 2025, 6:21 PM

#

you dont need to restart the game for server scripts, /kubejs reload server_scripts should do

#

if its still not logging then send the script

slate apex Jan 8, 2025, 6:22 PM

#

slate apex ```js EntityEvents.checkSpawn('eanimod:enhanced_moobloom', event => { const ...

is it this word for word?

tender laurel Jan 8, 2025, 6:22 PM

#

Sure thing 🫡 Here is the script in its entirety

    event.addSpawn('eanimod:enhanced_mooshroom', ['minecraft:dark_forest', 'biomesoplenty:mystic_grove', 'biomesoplenty:muskeg', 'biomesoplenty:fungal_jungle', 'regions_unexplored:blackwood_taiga', 'regions_unexplored:fungal_fen'], 12, 2, 6);
    event.addSpawn('eanimod:enhanced_moobloom', ['minecraft:flower_forest', 'minecraft:sunflower_plains', 'minecraft:cherry_grove', 'minecraft:meadow', 'biomesoplenty:field', 'biomesoplenty:lavender_field', 'biomesoplenty:snowblossom_grove', 'biomesoplenty:lush_savanna', 'regions_unexplored:flower_fields', 'regions_unexplored:poppy_fields', 'regions_unexplored:highland_fields', 'regions_unexplored:rocky_meadow'], 12, 2, 6);
})

EntityEvents.checkSpawn('eanimod:enhanced_moobloom', event => {
    const { entity } = event
    console.log(event.type)
    console.log(event.block)
    if (event.type == "NATURAL" && event.block.down.blockState.liquid()) {
        event.success(false)
    }
})```

slate apex Jan 8, 2025, 6:26 PM

#

hmmm

#

is it the mooshroom thats spawning or the moobloom because the event is only detecting moobloom rn

tender laurel Jan 8, 2025, 6:28 PM

#

mooblooms are the ones spawning in water

slate apex Jan 8, 2025, 6:28 PM

#

hmmm

#

odd

patent gate Jan 8, 2025, 6:53 PM

#

they’re just mooaquablooms

#

and walking on water? seems legit

#

100% intentional

#EntityJS: How to keep mobs from spawning in water