From 424b36d469e99d5d1bd9bb136477d0dc442376dd Mon Sep 17 00:00:00 2001 From: Perttu Ahola Date: Thu, 22 Mar 2012 16:12:33 +0200 Subject: [PATCH] Describe format of nodes in doc/mapformat.txt --- doc/mapformat.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/doc/mapformat.txt b/doc/mapformat.txt index fd892c9db..db1619865 100644 --- a/doc/mapformat.txt +++ b/doc/mapformat.txt @@ -271,6 +271,7 @@ zlib-compressed node data: u8[4096]: param0 fields u8[4096]: param1 fields u8[4096]: param2 fields +- The location of a node in each of those arrays is (z*16*16 + y*16 + x). zlib-compressed node metadata list - content: @@ -316,6 +317,22 @@ foreach num_name_id_mappings EOF. +Format of nodes +---------------- +A node is composed of the u8 fields param0, param1 and param2. + +The content id of a node is determined as so: +- If param0 < 0x80, + content_id = param0 +- Otherwise + content_id = (param0<<4) + (param2>>4) + +The purpose of param1 and param2 depend on the definition of the node. + +The name-id-mapping +-------------------- +The mapping maps node content ids to node names. + Node metadata format ---------------------