Beethoven92

It comes from IForgeBlock. Show your code

Well, your ChocolateForest class is not extending the Biome class, its just a normal class that, for the compiler, has absolutely nothing to do with the Biome class. This is why the compiler is complaining there and not accepting the constructor of your class. On the other hand, it is true that you cannot extends the Biome class anymore, so you have to find a different way to obtain a Biome object to supply to your registry object. I suggest taking a good look here: https://github.com/Choonster-Minecraft-Mods/TestMod3/blob/1.16.x/src/main/java/choonster/testmod3/init/ModBiomes.java

Override isStickyBlock in your custom block class

i think you can get them from vanilla registries

Why don't you use the onBlockActivated method of your custom log class to handle this? You can take a look at this template class that represents a stripable log: https://github.com/Beethoven92/BetterEndForge/blob/master/src/main/java/mod/beethoven92/betterendforge/common/block/template/StripableLogBlockTemplate.java

You need to look how the floating islands world preset is generated then (in the DimensionSettings class you can see the settings used by the floating islands world type)..to override the Nether chunk generator you would have to create a new NoiseChunkGenerator instance. Look at the getNetherChunkGenerator method in the DimensionType class..however instead of trying to replace the vanilla nether, unless you really want to do that, i would go for a custom world type which generates how you want (which would be far easier and would not require core modding)

So, removing some of the features from nether biomes is quite simple, you would need to handle the BiomeLoadingEvent, retrieve the features you don't want from each Nether biome and remove them from the feature list. Example on how to use the BiomeLoadingEvent to add or remove features here: https://github.com/Beethoven92/BetterEndForge/blob/master/src/main/java/mod/beethoven92/betterendforge/common/event/forge/BiomeModification.java You should specify a bit more what do you mean by "remove all other terrains"...but for things like that and removing the bedrock ceiling there is no easy or mod-compatible way to achieve them. You would need to create a custom DimensionSettings object for the Nether and replace the vanilla one. Useful classes to look at are: NoiseChunkGenerator and DimensionSettings

Which is your goal exactly? I mean, how you intend to transform the nether generation?

Wait, do you want to create a new world type which looks similar to the Nether, or do you want to actually change the vanilla Nether generation itself?

As i already said, the code above should not even compile..could you send a link to your repository so we can see the whole code please?

Define doesn't work please, also why you call your handler "renderPlayerPre" if you are listening to the EntityEvent.Size event? The code above shouldn't even compile, where did you define "event"? You probably meant to use "size" there. One last thing, the Size event is fired also in the constructor of the Entity, where it is unlikely a riding entity already exists..you can easily check that by logging something to the console inside the if statement and check if the message appears or not

All right, you changed it, thats good..so, at this point i think it would be better if you could post a link to your repository (make one if you haven't yet) so we can see the whole thing..

what is "befat"? I thought your mod id was "tme" (as seen in the first json you posted)..also why did you separate advancements and recipes folder? You can put both of them in data."your_mod_id"

Have you tried looking for existing usages of the damageItem method in vanilla code? Try looking at the shears item class for example

Because you still have to bind a renderer to the entity. The default SpriteRenderer should be fine