forked from mtcontrib/riesenpilz
somehow greatly decrease ground generating delay and fix biome size: perlin noise hills look like sinus curve hills, not like prongs
This commit is contained in:
HybridDog
parent
b6b14c5570
commit
df794632c2
133
mapgen.lua
133
mapgen.lua
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@ -74,15 +74,25 @@ local function say_info(info)
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minetest.chat_send_all(info)
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end
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local riesenpilz_rarity = riesenpilz.mapgen_rarity
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local riesenpilz_size = riesenpilz.mapgen_size
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local smooth_trans_size = riesenpilz.smooth_trans_size
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-- perlin noise "hills" are not peaks but looking like sinus curve
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local function upper_rarity(rarity)
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return math.sign(rarity)*math.sin(math.abs(rarity)*math.pi/2)
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end
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local nosmooth_rarity = 1-riesenpilz_rarity/50
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local perlin_scale = riesenpilz_size*100/riesenpilz_rarity
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local smooth_rarity_max = nosmooth_rarity+smooth_trans_size*2/perlin_scale
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local smooth_rarity_min = nosmooth_rarity-smooth_trans_size/perlin_scale
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local smooth_rarity_dif = smooth_rarity_max-smooth_rarity_min
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local rarity = riesenpilz.mapgen_rarity
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local riesenpilz_size = riesenpilz.mapgen_size
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local nosmooth_rarity = 1-rarity/50
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local perlin_scale = riesenpilz_size*100/rarity
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local smooth_rarity_max, smooth_rarity_min, smooth_rarity_dif
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local smooth = riesenpilz.smooth
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if smooth then
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local smooth_trans_size = riesenpilz.smooth_trans_size
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smooth_rarity_max = upper_rarity(nosmooth_rarity+smooth_trans_size*2/perlin_scale)
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smooth_rarity_min = upper_rarity(nosmooth_rarity-smooth_trans_size/perlin_scale)
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smooth_rarity_dif = smooth_rarity_max-smooth_rarity_min
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end
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nosmooth_rarity = upper_rarity(nosmooth_rarity)
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--local USUAL_STUFF = {"default:leaves","default:apple","default:tree","default:cactus","default:papyrus"}
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@ -115,23 +125,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
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end
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end
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--[[if not (perlin1:get2d({x=x0, y=z0}) > 0.53) and not (perlin1:get2d({x=x1, y=z1}) > 0.53)
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and not (perlin1:get2d({x=x0, y=z1}) > 0.53) and not (perlin1:get2d({x=x1, y=z0}) > 0.53)
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and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > 0.53) then
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if not riesenpilz.always_generate
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and not ( perlin1:get2d( {x=x0, y=z0} ) > nosmooth_rarity ) --top left
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and not ( perlin1:get2d( { x = x0 + ( (x1-x0)/2), y=z0 } ) > nosmooth_rarity )--top middle
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and not (perlin1:get2d({x=x1, y=z1}) > nosmooth_rarity) --bottom right
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and not (perlin1:get2d({x=x1, y=z0+((z1-z0)/2)}) > nosmooth_rarity) --right middle
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and not (perlin1:get2d({x=x0, y=z1}) > nosmooth_rarity) --bottom left
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and not (perlin1:get2d({x=x1, y=z0}) > nosmooth_rarity) --top right
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and not (perlin1:get2d({x=x0+((x1-x0)/2), y=z1}) > nosmooth_rarity) --left middle
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and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > nosmooth_rarity) --middle
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and not (perlin1:get2d({x=x0, y=z1+((z1-z0)/2)}) > nosmooth_rarity) then --bottom middle
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return
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end]]
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local t1 = os.clock()
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riesenpilz.inform("tries to generate a giant mushroom biome at: x=["..minp.x.."; "..maxp.x.."]; y=["..minp.y.."; "..maxp.y.."]; z=["..minp.z.."; "..maxp.z.."]", 2)
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@ -164,9 +157,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
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env:remove_node(v)
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end]]
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local smooth = riesenpilz.smooth
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for j=0,divs do
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for i=0,divs do
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local x,z = x0+i,z0+j
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@ -185,30 +175,41 @@ minetest.register_on_generated(function(minp, maxp, seed)
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) then
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in_biome = true
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end
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elseif (not smooth)
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and test > nosmooth_rarity then
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elseif test > nosmooth_rarity then
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in_biome = true
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end
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if in_biome then
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local ground_y = nil --Definition des Bodens:
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-- for y=maxp.y,0,-1 do
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for y=maxp.y,1,-1 do
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local p_pos = area:index(x, y, z)
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local d_p_pos = data[p_pos]
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for _,nam in pairs(c.USUAL_STUFF) do --remove usual stuff
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if d_p_pos == nam then
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data[p_pos] = c.air
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p_pos = nil
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local ymin = math.max(1, minp.y) -- -1
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-- skip the air part
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local ground
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for y = maxp.y,ymin,-1 do
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if data[area:index(x, y, z)] ~= c.air then
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ground = y
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break
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end
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end
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local ground_y
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if ground then
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for y = ground,ymin,-1 do
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local p_pos = area:index(x, y, z)
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local d_p_pos = data[p_pos]
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for _,nam in pairs(c.USUAL_STUFF) do --remove usual stuff
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if d_p_pos == nam then
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data[p_pos] = c.air
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p_pos = nil
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break
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end
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end
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if p_pos --else search ground_y
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and find_ground(d_p_pos, c.GROUND) then
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ground_y = y
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break
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end
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end
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if p_pos --else search ground_y
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and find_ground(d_p_pos, c.GROUND) then
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ground_y = y
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break
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end
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end
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if ground_y then
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data[area:index(x, ground_y, z)] = c.ground
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@ -289,49 +290,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
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vm:set_lighting({day=0, night=0})
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vm:calc_lighting()
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vm:write_to_map()
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data = nil
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area = nil
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riesenpilz.inform("data set", 2, t2)
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riesenpilz.inform("done", 1, t1)
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end)
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--[[ if maxp.y < -10 then
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local x0,z0,x1,z1 = minp.x,minp.z,maxp.x,maxp.z -- Assume X and Z lengths are equal
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local env = minetest.env --Should make things a bit faster.
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local perlin1 = env:get_perlin(11,3, 0.5, 200) --Get map specific perlin
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--[if not (perlin1:get2d({x=x0, y=z0}) > 0.53) and not (perlin1:get2d({x=x1, y=z1}) > 0.53)
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and not (perlin1:get2d({x=x0, y=z1}) > 0.53) and not (perlin1:get2d({x=x1, y=z0}) > 0.53)
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and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > 0.53) then]
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if not ( perlin1:get2d( {x=x0, y=z0} ) > 0.53 ) --top left
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and not ( perlin1:get2d( { x = x0 + ( (x1-x0)/2), y=z0 } ) > 0.53 )--top middle
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and not (perlin1:get2d({x=x1, y=z1}) > 0.53) --bottom right
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and not (perlin1:get2d({x=x1, y=z0+((z1-z0)/2)}) > 0.53) --right middle
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and not (perlin1:get2d({x=x0, y=z1}) > 0.53) --bottom left
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and not (perlin1:get2d({x=x1, y=z0}) > 0.53) --top right
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and not (perlin1:get2d({x=x0+((x1-x0)/2), y=z1}) > 0.53) --left middle
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and not (perlin1:get2d({x=(x1-x0)/2, y=(z1-z0)/2}) > 0.53) --middle
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and not (perlin1:get2d({x=x0, y=z1+((z1-z0)/2)}) > 0.53) then --bottom middle
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print("abortriesenpilz")
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return
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end
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local divs = (maxp.x-minp.x);
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local pr = PseudoRandom(seed+68)
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for j=0,divs do
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for i=0,divs do
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local x,z = x0+i,z0+j
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for y=minp.y,maxp.y,1 do
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local pos = {x=x, y=y, z=z}
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if env:get_node(pos).name == "air"
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and env:get_node({x=x, y=y-1, z=z}).name == "default:stone"
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and pr:next(1,40) == 33
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and env:find_node_near(pos, 4, "group:igniter")
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and not env:find_node_near(pos, 3, "group:igniter") then
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env:add_node(pos, {name="riesenpilz:lavashroom"})
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end
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end
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end
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end
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end
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end)]]
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@ -9,10 +9,10 @@ riesenpilz.always_generate = false
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riesenpilz.smooth = true
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--rarity in %
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riesenpilz.mapgen_rarity = 0.1
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riesenpilz.mapgen_rarity = 0.4
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--size of the generated... (has an effect to the rarity, too)
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riesenpilz.mapgen_size = 50
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riesenpilz.mapgen_size = 200
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--approximate size of smooth transitions
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riesenpilz.smooth_trans_size = 2
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