mtcontrib/rocks
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Sightly usable demo.

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This commit is contained in:
Tomáš Brada 2014-12-28 14:51:50 +01:00
parent 120c7ce4d4
commit 2a8cf4d5c4
1 changed files with 30 additions and 20 deletions
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50
init.lua
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@ -14,15 +14,10 @@ rocks.layers = {}
rocks.veins = {}
rocks.ores = {}
rocks.layer_gain=40
rocks.layer_scale=300
rocks.layer_presist=0.7
rocks.layer_octaves=3
rocks.rock_scale=10
rocks.rock_presist=0.5
rocks.rock_octaves=1 -- faster than 2 ?
rocks.register_layer=function(name,params)
assert(name)
assert(params)
@ -30,8 +25,8 @@ rocks.register_layer=function(name,params)
assert(params.height)
local maxheight
for ln,ld in pairs(rocks.layers) do
if (not ld.maxheight) or (ld.maxheight>params.height) then ld.maxheight=params.height end
if (not maxheight) or (maxheight>ld.height) then maxheight=ld.height end
if (ld.height<params.height)and ((not ld.maxheight) or (ld.maxheight>params.height)) then ld.maxheight=params.height end
if (ld.height>params.height)and((not maxheight) or (maxheight>ld.height)) then maxheight=ld.height end
end
rocks.layers[name]= {
gain=params.gain,
@ -50,7 +45,7 @@ rocks.register_rock=function(layer,block,amount)
assert(block)
assert(amount)
assert(rocks.layers[layer])
table.insert(rocks.layers[layer].rocks, { block=block, amount=amount, placed=0})
table.insert(rocks.layers[layer].rocks, { block=block, amount=amount})
rocks.layers[layer].sum=rocks.layers[layer].sum+amount
print("[rocks] register rock "..block.." in "..layer.." amount="..amount.." cur sum="..rocks.layers[layer].sum)
end
@ -59,11 +54,22 @@ end
-- test layer
--
rocks.register_layer("test",{ gain=40, height=70, limit=2, seed=1 })
rocks.register_rock("test","rocks:black_granite",1)
rocks.register_rock("test","rocks:brown_granite",1)
rocks.register_rock("test","rocks:pink_granite",1)
rocks.register_rock("test","rocks:white_granite",1)
rocks.register_layer("test1",{ gain=40, height=70, limit=2, seed=1 })
rocks.register_rock("test1","rocks:black_granite",1)
rocks.register_rock("test1","air",1)
rocks.register_layer("test2",{ gain=5, height=70, limit=2, seed=5 })
rocks.register_rock("test2","default:stone_with_coal",1)
rocks.register_layer("test3",{ gain=40, height=65, limit=2, seed=3 })
rocks.register_rock("test3","rocks:pink_granite",1)
rocks.register_rock("test3","air",1)
rocks.register_layer("test4",{ gain=40, height=90, limit=2, seed=4 })
rocks.register_rock("test4","rocks:white_granite",1)
rocks.register_rock("test4","air",1)
for ln,ld in pairs(rocks.layers) do
print("[rocks] debug: "..ln..": "..minetest.serialize(ld))
end
--
-- layer generator
@ -73,13 +79,15 @@ local function mkheightmap(x,z,miny,maxy)
local hm={}
for ln,ld in pairs(rocks.layers) do
if not ld.noise then
ld.noise=minetest.get_perlin(ld.seed, rocks.rock_octaves, rocks.rock_presist, rocks.rock_scale)
print("[rocks] initialize perlin noise for layer "..ln)
ld.noise=minetest.get_perlin(ld.seed, rocks.layer_octaves, rocks.layer_presist, rocks.layer_scale)
end
if (ld.height-ld.gain<maxy)and((not ld.maxheight)or(ld.maxheight+ld.gain>miny)) then
local noise=ld.noise:get2d({x=x,y=z})
if math.abs(noise)<ld.limit then
ld.nh = (ld.noise:get2d({x=x,y=z})*ld.gain)+ld.height
if ld.nh<maxy then table.insert(hm,ld) end
ld.nh = (noise*ld.gain)+ld.height
-- if (ld.nh<maxy)and(ld.nh>miny)
table.insert(hm,ld)
end
end
end
@ -94,11 +102,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
-- 3 octaves it is like 1.7 max
-- 4 octaves with 0.8 presist = 2.125 max !!
-- if ...
print("[rocks] generate y="..minp.y)
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}
if (minp.x>0)and(minp.x<200) then return end -- debug
for x=minp.x,maxp.x,1 do
for z=minp.z,maxp.z,1 do
--initialize layers hmap
@ -108,7 +116,10 @@ minetest.register_on_generated(function(minp, maxp, seed)
-- select layer
local layer
for ln,ld in pairs(layers) do
if (y>ld.nd)and ((not layer)or(ld.nd<layer.nd)) then
if (ld)and
(ld.nh<y)and
((not layer)or(ld.height>layer.height))
then
layer=ld
end
end
@ -125,12 +136,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
end end
end
end
print("[rocks] manipulator flush")
manipulator:set_data(nodes)
-- manipulator:calc_lighting()
-- manipulator:update_liquids()
manipulator:write_to_map()
print("[rocks] gen "..os.difftime(os.clock(),timebefore))
print("[rocks] gen "..os.clock()-timebefore)
end)