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Vein generator finished and use flat noisemap and vox'ma'nips.

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This commit is contained in:
Tomáš Brada 2015-04-03 23:54:50 +02:00
parent 229e0e4e80
commit 4d7d8cd80d
2 changed files with 50 additions and 16 deletions
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3
ign.lua
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@ -60,8 +60,7 @@ local sample_vein_col={
{ primary="default:nyancat",
wherein="rocks:granite",
miny=-160, maxy=20,
radius=10,
--radius={ average=15, amplitude=6 },
radius={ average=10, amplitude=4, frequency=8 },
density=1,
rarity=0.025, -- this^3*mapblock_volume veins per mapblock
localized={

63
mapgen.lua
View File

@ -25,6 +25,8 @@ rocksl.register_blob=function(layer,name,param)
layer.stats.node[name]=0
end
rocksl.register_vein=function(layer,name,param)
rocksl.layergen=function(layer, minp, maxp, seed)
if ( (layer.top.offset+layer.top.scale)>minp.y )
and ( (layer.bot.offset-layer.bot.scale)<maxp.y )
@ -101,37 +103,70 @@ rocksl.layergen=function(layer, minp, maxp, seed)
end
end
local ignore_wherein=1
rocksl.veingen=function(veins,minp,maxp,seed)
local side_length=(maxp.y-minp.y)
local random=PseudoRandom(seed-79)
local noise=minetest.get_perlin(-79,1,0.7,8)
print("begin veingen")
local timebefore=os.clock();
local manipulator, emin, emax = minetest.get_mapgen_object("voxelmanip")
local nodes = manipulator:get_data()
local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
local did_generate=nil
for _,vein in ipairs(veins) do
if (minp.y<vein.maxy) and (maxp.y>vein.maxy) then
local vr2=vein.radius.average^2
local vrm=vein.radius.average+vein.radius.amplitude
local noise_map=minetest.get_perlin_map(
{
seed=-79,
scale=vein.radius.amplitude,
offset=0, octaves=1, persist=0.7,
spread={x=vein.radius.frequency, y=vein.radius.frequency, z=vein.radius.frequency}
},{x=(vrm*2)+1, y=(vrm*2)+1, z=(vrm*2)+1}
)
local iterations_count= (vein.rarity*side_length)^3
iterations_count=iterations_count+random:next(-1,1)
iterations_count=iterations_count+(random:next(0,100)/100)
local primary_ctx=minetest.get_content_id(vein.primary)
local wherein_ctx=minetest.get_content_id(vein.wherein)
print("vein "..vein.primary.." ic="..iterations_count.." p="..primary_ctx.." w="..wherein_ctx)
for iteration=1, iterations_count do
local x0=minp.x+ random:next(0,side_length)
local y0=minp.y+ random:next(0,side_length)
local z0=minp.z+ random:next(0,side_length)
if true or (minetest.get_node({x0,y0,z0}).name==vein.wherein) then
print("vein "..vein.primary.." @ "..x0..","..y0..","..z0)
for x=-vein.radius, vein.radius do
for y=-vein.radius, vein.radius do
for z=-vein.radius, vein.radius do
p={x=x+x0,y=y+y0,z=z+z0}
local nv=noise:get3d(p)*5
if ((x^2)+(y^2)+(z^2))<((vein.radius+nv)^2) then
minetest.set_node(p, {name=vein.primary})
end
local noise=noise_map:get3dMap_flat({x=x0-vrm, y=y0-vrm, z=z0-vrm})
local noise_ix=1
local posi = area:index(x0, y0, z0)
if ignore_wherein or (nodes[posi]==wherein_ctx) then
print("vein "..vein.primary.." @ "..x0..","..y0..","..z0.." vrm="..vrm)
did_generate=1
for x=-vrm, vrm do
for y=-vrm, vrm do
for z=-vrm, vrm do
local posc = {x=x+x0,y=y+y0,z=z+z0}
posi = area:index(posc.x, posc.y, posc.z)
local nv=noise[noise_ix]
if ((x^2)+(y^2)+(z^2))<((vein.radius.average+nv)^2) then
--minetest.set_node(posc, {name=vein.primary})
nodes[posi]=primary_ctx
end
noise_ix=noise_ix+1
end end end
else
print("vein "..vein.primary.." bad environmnent")
--print("vein "..vein.primary.." bad environmnent -"..minetest.get_node({x0,y0,z0}).name.."="..nodes[posi])
end
end
end
end
print("end veingen")
if did_generate then
manipulator:set_data(nodes)
--manipulator:calc_lighting()
manipulator:write_to_map()
print("end veingen "..(os.clock()-timebefore))
else
print("end veingen (nothin generated)")
end
end
-- ~ Tomas Brod