From 61dfa912f5f37f435e41b3c7d8cdb6244562e597 Mon Sep 17 00:00:00 2001 From: kwolekr Date: Sun, 28 Dec 2014 21:17:12 -0500 Subject: Ore: Add Vein ore type --- doc/lua_api.txt | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'doc') diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 8f491f5a8..7474c2bf4 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -563,9 +563,27 @@ All default ores are of the uniformly-distributed scatter type. clust_scarcity and clust_num_ores are ignored. This is essentially an improved version of the so-called "stratus" ore seen in some unofficial mods. - blob - Creates a roundish blob of ore according to 3d perlin noise described by noise_params. The maximum - size of the blob is clust_size, and clust_scarcity has the same meaning as with scatter type. - + Creates a deformed sphere blobs of ore according to 3d perlin noise described by noise_params. The + maximum size of the blob is clust_size, and clust_scarcity has the same meaning as with scatter type. + - vein + Creates veins of ore varying in density by according to the intersection of two instances 3d perlin + noise with diffferent seeds both described by noise_params. random_factor varies the influence random + chance has on placement of an ore inside the vein, which is 1 by default. Note that modifying this + parameter may require adjusting noise_threshhold. The parameters clust_scarcity, clust_num_ores, and + clust_size are ignored by this ore type. This ore type is difficult to control since it is sensitive + to small changes. The following is a decent set of parameters to work from: + noise_params = { + offset = 0, + scale = 3, + spread = {x=200, y=200, z=200}, + seed = 5390, + octaves = 4, + persist = 0.5, + flags = "eased", + }, + noise_threshhold = 1.6 + WARNING: Use this ore type *very* sparingly since it is ~200x more computationally expensive than + any other ore. Ore attributes ------------------- @@ -2717,6 +2735,10 @@ Ore definition (register_ore) noise_params = {offset=0, scale=1, spread={x=100, y=100, z=100}, seed=23, octaves=3, persist=0.70} ^ NoiseParams structure describing the perlin noise used for ore distribution. ^ Needed for sheet ore_type. Omit from scatter ore_type for a uniform ore distribution + random_factor = 1.0, + ^ Multiplier of the randomness contribution to the noise value at any given point to + ^ decide if ore should be placed. Set to 0 for solid veins. This parameter is only valid + ^ for ore_type == "vein". } Decoration definition (register_decoration) -- cgit v1.2.3