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[1.12.2]NBT Packet

Posted October 17, 20177 yr

It would be much less of a pain to send packets if I knew how to put NBT in them, it is possible, because when I spawn an entity, my NBT read code activates:

[13:26:48] [Server thread/INFO]: Saving and pausing game...
[13:26:48] [Server thread/INFO]: Saving chunks for level 'New World'/overworld
[13:26:48] [Server thread/INFO]: Saving chunks for level 'New World'/the_nether
[13:26:48] [Server thread/INFO]: Saving chunks for level 'New World'/the_end
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:77]: deser
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:83]: body_chestnut
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_whitefield
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_whitedots
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_white
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_blackfield
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_greyfield
[13:26:50] [Server thread/INFO]: [mods.giantnuker.horse.Markings:deserializeNBT:88]: mark:marks_white

This first prints the body image, body_chestnut, then all the additional markings the horse has, marks_whitedots, marks_greyfield.

Help would be nice

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October 17, 20177 yr

You can. ByteBufUtils.writeTag(buffer, nbt);

You can also send more than one value in a packet...

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable. If you think this is the case, JUST REPORT ME. Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

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October 17, 20177 yr

Author

1 minute ago, Draco18s said:

You can. ByteBufUtils.writeTag(buffer, nbt);

You can also send more than one value in a packet...

Thank You!!!!

Never again will I have so much trouble sending strings

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October 19, 20177 yr

Author

17 hours ago, diesieben07 said:

In my opinion, if you are sending NBT in a packet, 90% of the time you are doing something wrong.

why

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October 23, 20177 yr

Author

On 10/20/2017 at 0:42 AM, diesieben07 said:
Because there is no point in doing:
compound = new NBTTagCompound();
compound.setInt("foo", 123);
compound.setString("bar", "Hello World");
byteBuf.writeCompound(compound);
when you can just do:
byteBuf.writeInt(123);
byteBuf.writeString("Hello World");
The second version is more compact code-wise, it takes less bandwidth and it is more performant.

there is no writeString method in ByteBuf.

Quote

October 23, 20177 yr

Knowing two things:

1) How to use my IDE

2) That strings are characters and characters are bytes

I worked this out on my own:

buf.writeBytes(("this is a string").getBytes());

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

Quote

October 23, 20177 yr

54 minutes ago, Draco18s said:

Knowing two things:

1) How to use my IDE

2) That strings are characters and characters are bytes

I worked this out on my own:

buf.writeBytes(("this is a string").getBytes());

You should use ByteBufUtils.writeString and ByteBufUtils.readString instead.

Quote

October 23, 20177 yr

1 minute ago, Silly511 said:

You should use ByteBufUtils.writeString and ByteBufUtils.readString instead.

The ByteBufUtils are awesome, and definitely a better choice.

But in terms of "here's what's in front of me, how can I solve this problem?" I could do it.

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

Quote

October 23, 20177 yr

1 minute ago, Draco18s said:

The ByteBufUtils are awesome, and definitely a better choice.

But in terms of "here's what's in front of me, how can I solve this problem?" I could do it.

I was about to edit my post when you replied, I should have been more specific. You can't use the code you posted because you can't read the string afterwards. You need to know how long the string is so you know how many bytes to read. ByteBufUtils.writeString will write the length so that ByteBufUtils.readString knows how many bytes to read.

Quote

October 23, 20177 yr

On 10/17/2017 at 11:21 PM, diesieben07 said:

In my opinion, if you are sending NBT in a packet, 90% of the time you are doing something wrong.

I do it when I'm also planning to save / load the information. I know I can also do that in a raw file sort of way, but kinda nice to have one format that contains mixed data types that has helper classes for both packet and file serializers.

Check out my tutorials here: http://jabelarminecraft.blogspot.com/

Quote

October 23, 20177 yr

8 minutes ago, Silly511 said:

because you can't read the string afterwards. You need to know how long the string is so you know how many bytes to read.

Oh gosh, leaving an exercise to the reader about writing in the length of the string first! The horror!

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

DO NOT PM ME WITH PROBLEMS. No help will be given.

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By FireDude123 · Posted Thursday at 12:07 AM2 days

Choonster

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[1.12.2]NBT Packet

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