mirror of
git://repo.or.cz/rocks.git
synced 2024-09-30 08:10:39 +02:00
126 lines
3.3 KiB
Lua
126 lines
3.3 KiB
Lua
--
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-- layer generator
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--
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minetest.register_on_generated(function(minp, maxp, seed)
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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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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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-- sort out unused layers
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-- generate noises
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avl={}
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for i,d in ipairs(rocks.layers) do
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-- h je normaalna vyyska horného konca vrstvy
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if (d.height+d.gain)>=minp.y then -- ak je to mimo zdola tak ju vyhodime
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-- urobime sum pre vrstvu
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local np=rocks.noiseparams_layers
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np.seed=d.seed
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np.scale=d.gain
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np.offset=d.height
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d.nmap=minetest.get_perlin_map(np,map_lengths_xyz):get2dMap_flat({x=minp.x, y=minp.z})
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-- contene_id kamenov
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d.rock.ctx=d.rock.ctx or minetest.get_content_id(d.rock.node)
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-- veiny
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local veinstodo={}
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for veinname,vd in pairs(d.veins) do
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-- todo: do not generate noise for blocks outside the layer
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veinstodo[veinname]=vd
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end
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for veinname,vd in pairs(veinstodo) do
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-- noise pre vein
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np=vd.np
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vd.nmap=minetest.get_perlin_map(np,map_lengths_xyz):get3dMap_flat(minp)
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vd.prng=PseudoRandom(np.seed)
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vd.sum=0
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for i,ore in pairs(vd.ores) do
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-- contntid pre rudu
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ore.ctx=ore.ctx or minetest.get_content_id(ore.node)
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-- sum sanci pre vein
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vd.sum=vd.sum+ore.chance
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end
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end
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table.insert(avl,d) -- pridame vrstvu
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if (d.height-d.gain)>maxp.y then break end -- ak je mimo zhora tak uz dalsie nehladaj
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else
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--print(" no higher "..d.height.." than "..minp.y)
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end
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end
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--
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print("[rocks] gen2 "..os.clock()-timebefore.." #layers="..#avl.." minp.y="..minp.y.." maxp.y="..maxp.y)
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for lh,ld in ipairs(avl) do
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print(" "..lh.."->"..ld.name.." top="..ld.height)
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for vn,vd in pairs(ld.veins) do
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print(" "..vn.."->"..#vd.ores)
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end
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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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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 p_pos = area:index(x, y, z)
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local layer,vein
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local rock
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--* select layer
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for lh,ld in ipairs(avl) do
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if (y<ld.nmap[noise2d_ix])and(ld.nmap[noise2d_ix]<ld.limit) then
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layer=ld
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rock=layer.rock
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break
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end
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end
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if layer then
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--* select vein
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for veinname,vd in pairs(layer.veins) do
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if vd.nmap[noise3d_ix]>vd.treshold then
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vein=vd
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--rock not changed
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break
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end
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end
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end
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if vein then
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--* select ore
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local chance=vein.prng:next(0,vein.sum)
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for i,ore in pairs(vein.ores) do
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chance=chance-ore.chance
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if chance<=0 then
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rock=ore
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break
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end
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end
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end
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--* place rocks
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if (rock) and(nodes[p_pos]==stone_ctx) then
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nodes[p_pos] = rock.ctx
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end
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noise3d_ix =noise3d_ix+1
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noise2d_ix = noise2d_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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end
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manipulator:set_data(nodes)
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--manipulator:calc_lighting()
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--manipulator:set_lighting({day=15,night=15})
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--manipulator:update_liquids()
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manipulator:write_to_map()
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print("[rocks] gen0 "..os.clock()-timebefore)
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end)
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