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Faster mapgen: use voxelmanip for ungen check and scanning chunk below. Use sidelen not 80

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This commit is contained in:
Mat 2014-07-26 20:07:42 +01:00
parent 0a51271786
commit c0802ab89b
3 changed files with 31 additions and 29 deletions
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2
README.txt
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@ -1,4 +1,4 @@
watershed 0.4.1 by paramat
watershed 0.4.3 by paramat
For latest stable Minetest back to 0.4.8
Depends default bucket
Licenses: code WTFPL, textures CC BY-SA

1
depends.txt
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@ -1,2 +1,3 @@
default
bucket
stairs

55
init.lua
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@ -1,11 +1,12 @@
-- watershed 0.4.2 by paramat
-- watershed 0.4.3 by paramat
-- For latest stable Minetest and back to 0.4.8
-- Depends default bucket
-- License: code WTFPL, textures CC BY-SA
-- watershed:redcobble texture CC BY-SA by brunob.santos
-- watershed:pineling texture CC BY-SA by Splizard
-- acaciawood, pinewood stairs and slabs
-- use LVM for 'ungen' check, scanning chunk below, faster mapgen
-- 80 becomes sidelen, works with any chunk size
-- Parameters
@ -199,6 +200,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
local data = vm:get_data() -- get flat array of voxelarea content ids
-- content ids
local c_air = minetest.get_content_id("air")
local c_ignore = minetest.get_content_id("ignore")
local c_water = minetest.get_content_id("default:water_source")
local c_sand = minetest.get_content_id("default:sand")
local c_desand = minetest.get_content_id("default:desert_sand")
@ -242,7 +244,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
-- perlinmap stuff
local sidelen = x1 - x0 + 1 -- chunk sidelength
local chulens = {x=sidelen, y=sidelen+2, z=sidelen} -- chunk dimensions, '+2' for overgeneration
local minposxyz = {x=x0, y=y0-1, z=z0} -- 3D and 2D perlinmaps start from these co-ordinates, '-1' for overgeneration
local minposxyz = {x=x0, y=y0-1, z=z0}
local minposxz = {x=x0, y=z0}
-- 3D and 2D perlinmaps
local nvals_terrain = minetest.get_perlin_map(np_terrain, chulens):get3dMap_flat(minposxyz)
@ -257,10 +259,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
local nvals_xlscale = minetest.get_perlin_map(np_xlscale, chulens):get2dMap_flat(minposxz)
local nvals_magma = minetest.get_perlin_map(np_magma, chulens):get2dMap_flat(minposxz)
local ungen = false -- ungenerated chunk below?
if minetest.get_node({x=x0, y=y0-1, z=z0}).name == "ignore" then
ungen = true
end
local viu = area:index(x0, y0-1, z0) -- ungenerated chunk below?
local ungen = data[viu] == c_ignore
-- mapgen loop
local nixyz = 1 -- 3D and 2D perlinmap indexes
local nixz = 1
@ -345,24 +346,24 @@ minetest.register_on_generated(function(minp, maxp, seed)
stable[si] = 0
end
else -- scan top layer of chunk below
local nodename = minetest.get_node({x=x,y=y,z=z}).name
if nodename == "watershed:stone"
or nodename == "watershed:redstone"
or nodename == "watershed:dirt"
or nodename == "watershed:permafrost"
or nodename == "watershed:luxoreoff"
or nodename == "default:sand"
or nodename == "default:desert_sand"
or nodename == "default:mese"
or nodename == "default:stone_with_diamond"
or nodename == "default:stone_with_gold"
or nodename == "default:stone_with_copper"
or nodename == "default:stone_with_iron"
or nodename == "default:stone_with_coal"
or nodename == "default:sandstone"
or nodename == "default:gravel"
or nodename == "default:clay"
or nodename == "default:obsidian" then
local nodid = data[vi]
if nodid == c_wsstone
or nodid == c_wsredstone
or nodid == c_wsdirt
or nodid == c_wspermafrost
or nodid == c_wsluxore
or nodid == c_sand
or nodid == c_desand
or nodid == c_mese
or nodid == c_stodiam
or nodid == c_stogold
or nodid == c_stocopp
or nodid == c_stoiron
or nodid == c_stocoal
or nodid == c_sandstone
or nodid == c_gravel
or nodid == c_clay
or nodid == c_obsidian then
stable[si] = 2
else
stable[si] = 0
@ -638,9 +639,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
vi = vi + 1
viu = viu + 1
end
nixz = nixz - 80
nixz = nixz - sidelen
end
nixz = nixz + 80
nixz = nixz + sidelen
end
-- voxelmanip stuff
vm:set_data(data)