mirror of
git://repo.or.cz/rocks.git
synced 2024-11-16 07:20:40 +01:00
103 lines
3.0 KiB
Lua
103 lines
3.0 KiB
Lua
--
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-- layer generator
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--
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local print2=function(text)
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minetest.log("verbose","rocks/gen/ "..text)
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end
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rocksl.seedseq=0
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rocksl.GetNextSeed=function()
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rocksl.seedseq=rocksl.seedseq+20
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print2("seed "..rocksl.seedseq)
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return rocksl.seedseq
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end
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rocksl.register_blob=function(layer,name,param)
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layer.localized[name]={
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spread=(param.spread or 20),
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height=(param.height or 15),
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treshold=(param.treshold or 0.85),
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secondary=param.secondary,
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seed=(rocksl.GetNextSeed()),
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}
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layer.stats.node[name]=0
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end
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rocksl.layergen=function(layer, minp, maxp, seed)
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if ( (layer.top.offset+layer.top.scale)>minp.y )
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and ( (layer.bot.offset-layer.bot.scale)<maxp.y )
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then
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stone_ctx= minetest.get_content_id("default:stone")
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air_ctx= minetest.get_content_id("air")
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dirt_ctx= minetest.get_content_id("default:dirt")
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if layer.debugging then
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layer.primary.ctx= air_ctx
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else
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layer.primary.ctx= minetest.get_content_id(layer.primary.name)
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end
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local timebefore=os.clock();
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local manipulator, emin, emax = minetest.get_mapgen_object("voxelmanip")
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local nodes = manipulator:get_data()
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local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
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local side_length = (maxp.x - minp.x) + 1
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local map_lengths_xyz = {x=side_length, y=side_length, z=side_length}
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-- noises:
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local bottom=minetest.get_perlin_map(layer.bot,map_lengths_xyz):get2dMap_flat({x=minp.x, y=minp.z})
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local localized={}
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for name,loc in pairs(layer.localized) do
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--defaults and overrides
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local np={ offset = 0, scale = 1, octaves = 1, persist = 0.7,
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spread = {x=loc.spread, y=loc.height, z=loc.spread}, seed=loc.seed}
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--get noise and content ids
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table.insert(localized,
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{
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noise=minetest.get_perlin_map(np,map_lengths_xyz):get3dMap_flat(minp),
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treshold=loc.treshold,
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ctx= minetest.get_content_id(name),
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ndn=name
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})
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end
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local noise2d_ix = 1
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local noise3d_ix = 1
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print2("after noise: "..(os.clock()-timebefore))
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for z=minp.z,maxp.z,1 do
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for y=minp.y,maxp.y,1 do
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for x=minp.x,maxp.x,1 do
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local pos = area:index(x, y, z)
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if (y>bottom[noise2d_ix])
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and (nodes[pos]~=air_ctx)
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then
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layer.stats.totalnodes=layer.stats.totalnodes+1
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if nodes[pos]==stone_ctx then nodes[pos] = layer.primary.ctx end
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for k,loc in pairs(localized) do
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if ( loc.noise[noise3d_ix] > loc.treshold) then
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nodes[pos]=loc.ctx
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layer.stats.node[loc.ndn]=layer.stats.node[loc.ndn]+1
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break
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end
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end
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end
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noise2d_ix=noise2d_ix+1
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noise3d_ix=noise3d_ix+1
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end
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noise2d_ix=noise2d_ix-side_length
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end
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noise2d_ix=noise2d_ix+side_length
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end
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print2("after loop: "..(os.clock()-timebefore))
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manipulator:set_data(nodes)
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--manipulator:calc_lighting()
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--manipulator:update_liquids()
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if layer.debugging then
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manipulator:set_lighting({day=15,night=15})
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end
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manipulator:write_to_map()
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print2("after commit: "..(os.clock()-timebefore))
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layer.stats.count=layer.stats.count+1
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layer.stats.total=layer.stats.total+(os.clock()-timebefore)
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layer.stats.side=side_length
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end
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end
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-- ~ Tomas Brod |