Ugdhar

Track that NPE down I'd say, based on the partial logs you've shown, figure out what's null and why, and fix it if it shouldn't be

When that happens, *always* post your debug.log, just saying it crashes doesn't really tell anyone anything

Please start a new thread for your issue instead of posting in a nearly year old one, you'll get a better response Also, include a description of what you are trying to do (from the gameplay standpoint; not HOW you want to do it), what you have tried (code is good, a github repo link is best), and logs (debug.log posted as a github gist is best) Doing these things will ensure you get the best possible response. An incomplete post is an invitation to just have it skipped over!! ?

So looking through the LayerUtil class, and accompanying Layer classes, I've realized a some things. There are a TON of hardcoded biome references in here, so biomes are not always chosen "at random". If you look through these Layer files (IslandLayer, AddIslandLayer, etc) and you see methods returning magic numbers less than 5, changes are decent that they represent one of the "main" biomes (Ocean, Plains, Desert, Mountain, Forest). Biome "borders" look like they are mostly managed in the EdgeLayer, EdgeBiomeLayer, and HillsLayer. They appear as if they decide what biomes will be able to be added to the edge of existing biomes. The main BiomeLayer appears to be built in IForgeWorldType#getBiomeLayer Most of these apply methods used in here that come from the trait classes (i.e. IBishopTransformer, ICastleTransformer) return a value that represents a biome ID number. Hopefully this information will be helpful to someone, or at least interesting. Feel free to chime in with any additional information related to this!

As of right now, the options are simply 1.14.4 or 1.15.2 if you wish to receive support. The latest is pretty much always the recommended version to use, but you can try either and see which one suits you. That being said, you are free to use any version you wish, as long as you will not require support from the forge forums/discord.

Please Post the eula.txt

I would guess you are starting a vanilla server and not a modded one. Post the full server log, also, how are you starting the server?

Looks like a broken config, try deleting your config folder if you haven't made any changes

Your modid cannot contain capital letters. The modid in your mod annotation and mods.toml do not match. In the future please post code in spoiler/code tags and not attached files. Better yet, a GitHub repository is the best way to go to share your code hands down

2 tips that will help your progress: 1: Stop using MCreator 2: Set up a github account, and put your project on there in a buildable form, and post the link in your support posts. These are both likely reasons that you do not get as many responses to your questions as you would like, as you have been told multiple times on here to stop using MCreator, and to properly share your code as opposed to attachments to forum posts. I'm not trying to be mean or tell you what to do, just making suggestions to try and help you progress with your mod better.

in your build.gradle, find the mappings line like so: And change the date part to today. They don't often break, so using the current should be fine. Then refresh your project in your IDE, and it should update the mappings used.

It looks like a config problem, if you haven't made config changes, delete the config folder in your minecraft game directory.

I would look at the vanilla SnowballEntity code. If there are lots of srg names in there, update your mappings, and you should be able to get something halfway readable. I see this in the SnowballEntity in mine from 20200604: Which looks promising for what you're describing. Also of course look at the parent class.

Make a custom pair of boots, and override the onArmorTick method (I believe), to apply the enchantment there.

How? Enchanting boots? More details on how this will be used please. That's because you are applying the enchantment on PlayerTickEvent, so every tick the enchantment is applied to the player. Where/when you want to apply the enchantment will likely depend on your answer to the above question.

Do you mean 1.5.2, or do you really mean 1.15.2 ? If you mean 1.5.2, it is no longer supported due to being older than dirt. If you really mean 1.15.2, please post the installer log in spoiler tags, it should provide more information.

Please post your debug.log, it has more information than the crash report. Post it on an external paste site, and link to it here. It should give the information required to figure out what's wrong

Weird, that render method looks wrong. It should be more like this: *edit: at least, that's the one i had for a custom shield that worked for 1.15.2. Looking at the one in my latest project with newer mappings it looks like the one you have. I guess at this point, I have no idea, sorry!

Then it's likely a problem with the way your ISTER is being registered/created. I believe the vanilla shield and trident use ISTER for rendering, they might be helpful examples.

A lot has changed with rendering: https://gist.github.com/williewillus/30d7e3f775fe93c503bddf054ef3f93e I have not done a ton with rendering, but I would go over those 1.15 rendering change notes, and see how it applies to your situation.

I would look at the vanilla code/models for one of those swords, and follow suit. What have you tried? What happened that wasn't expected? More details please

Probably not. You should start a new thread, and post logs, either the installer log if the installer is failing, or debug.log if your game is crashing.

Please post your debug.log (preferrably on a paste site or a github gist), and your code (a github repository is the best way). Unfortunately without those there is not enough information to know what's going on.

Looks like some sort of corruption/error in your configuration, if you haven't changed any configs, you can delete or rename your config folder. Setting a different/new game folder for your 1.15.2 forge installation might work as well, although you'd have to move/copy your mods over from the original .minecraft folder.