poopoodice

override getAttributeModifiers in ur item class, you can also check how sword does similar thing

It's call ItemGroup now, and no need to extend anything, everything is in ItemGroup include vanilla ones

same but different parameter: RenderingRegistry.registerEntityRenderingHandler(EntityType<T> entityClass, IRenderFactory<? super T> renderFactory)

use the new registerEntityRenderingHandler that requires an entity type, and createSpawnpacket looks right

try store the data in world provided by MinecraftServer.getWorld(dim), which I think it's the world that exist on the actual server

Maybe there's a better way of doing this but maybe store the entity UUIDs in a hashmap or something and also pass the length (size) of the map to the packet. Or just check the distance between the entity and the player is in a suitable distance, like the sendToAllNearExcept in PlayerList.

player.getMotion

Under what condition will you suggest capability than nbt tags?

use getTag to get tag from the itemstack, and store/get the data from it. Btw in my experience setting stack tag on client does not work.

use it where you want to access/set the data, which option you are using?

Capability nbt tag compound: use stack.getTag() to get the existing tag of the itemstack, .putBoolean, putInt..etc to store data .getBoolean, getInt... etc to get stored data from the nbt tag

Use nbt tags or capability to store data in itemstacks instead otherwise every hammer (item) will share the same data stored because there's only "one item" but multiple itemstacks.

I'm thinking it's probably because they don't sync the velocity every tick (called update interval or velocity update... not sure), therefore the client does not know the entity has stopped it's motion... you may need to do that yourself

put notSolid into ur block property builder, btw there's a same topic few hours ago, there's more detail

Where do you want to access the player's position?

could be, I'm using 31.1.87

Which forge version you are using? Because I can't seem to find it in mine

isOpaqueCube only exist in 1.12 : p use block properties.notSolid instead, and yeah, modify the voxel shape should also work

The position of the player is stored in PlayerEntity getPosition() getPosX/Y/Z() and lot more similar things

You may need to render them in render player event, not sure in pre or post tho, but I think they both works since you are not "interacting" with the player.

What are you trying to do? The server needs to install the mod in order to receive and read the custom packet, so probably not.

you will need to override some methods such as getStateForPlacement() which provides a blockstate for the blockitem to determine what states does the block have when added, normally something like return getDefaultState() .with(HORIZONTAL_FACING, context.getPlacementHorizontalFacing()); The rotate method you override is probably for structure generation or so.. not so sure.

There's no reason calling super, just use the property you already have which is builder.add(HORIZONTAL_FACING);

Just guessing, you might need to override fillStateContainer and pass that property into the builder yeah I think you will need to do this

In my opinion making a minecraft mod can also be a very good way of learning java. You research when you are stuck, and learn from it. Also having the experience of "actually" creating something can gives you some willing to keep going on. But of course, it will never be a bad idea to have some basic knowledge of java.