https://forge.gemwire.uk/index.php?action=history&feed=atom&title=Using_PacketBuffer%2F1.16 2026-05-22T21:56:05Z Revision history for this page on the wiki MediaWiki 1.35.0 https://forge.gemwire.uk/index.php?title=Using_PacketBuffer/1.16&diff=2742&oldid=prev 2021-07-27T03:59:31Z

<p>Copy <a href="/wiki/Using_PacketBuffer" class="mw-redirect" title="Using PacketBuffer">Using FriendlyByteBuf</a> to MC1.16 archive</p> <p><b>New page</b></p><div>&lt;code&gt;PacketBuffer&lt;/code&gt;s are essentially a byte array of zero or more bytes to sync information across a network. It works similarly to a queue: the information is written in to a specific order and read in the order it was written.<br /> <br /> == Using &lt;code&gt;PacketBuffer&lt;/code&gt;s ==<br /> <br /> In most cases, one will use a premade &lt;code&gt;PacketBuffer&lt;/code&gt; passed in from some network. Most of the time this is a heap buffer of some sort; however, understanding how it works is best left as an explanation of data structures.<br /> <br /> When you are &lt;code&gt;writing&lt;/code&gt; to a &lt;code&gt;PacketBuffer&lt;/code&gt;, you are calling one of the many write functions to store information as bytes (e.g. &lt;code&gt;writeBlockPos&lt;/code&gt; or &lt;code&gt;writeVarInt&lt;/code&gt;). There are a couple of helpers for objects like &lt;code&gt;CompoundNBT&lt;/code&gt;, &lt;code&gt;ItemStack&lt;/code&gt;s, etc. if they are needed.<br /> <br /> When you are &lt;code&gt;reading&lt;/code&gt; from a &lt;code&gt;PacketBuffer&lt;/code&gt;, you are calling the equivalent read function in the same order. For example, if you call &lt;code&gt;writeBlockPos&lt;/code&gt; and then &lt;code&gt;writeVarInt&lt;/code&gt;, you would call &lt;code&gt;readBlockPos&lt;/code&gt; and then &lt;code&gt;readVarInt&lt;/code&gt; in that order. Each of these method returns the value from the buffer.</div>

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