Version 0.2 Release
New crystal stalagmite structure, now generates stalactites. Some setting tweaks.
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HeroOfTheWinds
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init.lua
154
init.lua
@ -1,4 +1,4 @@
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-- caverealms 0.1.1 by HeroOfTheWinds
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-- caverealms 0.2 by HeroOfTheWinds
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-- For latest stable Minetest and back to 0.4.8
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-- Depends default
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-- License: code WTFPL
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@ -23,11 +23,11 @@ local STOTHR = 0.08 -- Stone density threshold
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local STABLE = 2 -- Minimum number of stacked stone nodes in column for dirt / sand on top
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local STAGCHA = 0.002 --chance of stalagmites
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local STALAC = 0.04 --chance of stalactites
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local STALCHA = 0.003 --chance of stalactites
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local H_LAG = 15 --max height for stalagmites
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local H_LAC = 20 --...stalactites
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local CRYSTAL = 0.007 --chance of glow crystal formations
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local H_CRY = 6 --max height of glow crystals
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local H_CRY = 9 --max height of glow crystals
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local GEMCHA = 0.03 --chance of small glow gems
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@ -120,13 +120,17 @@ minetest.register_node("caverealms:stone_with_moss", {
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description = "Cave Dirt with Grass",
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tiles = {"default_cobble.png^caverealms_moss.png", "default_cobble.png", "default_cobble.png^caverealms_moss_side.png"},
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is_ground_content = true,
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groups = {crumbly=3,soil=1},
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groups = {crumbly=3},
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drop = 'default:dirt',
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sounds = default.node_sound_dirt_defaults({
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footstep = {name="default_grass_footstep", gain=0.25},
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}),
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})
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--cave plants
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--cave plants go here
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--FUNCTIONS--
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--stalagmite spawner
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function caverealms:stalagmite(x,y,z, area, data)
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@ -161,46 +165,75 @@ function caverealms:stalagmite(x,y,z, area, data)
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end
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end
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--glowing crystal stalagmite spawner
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function caverealms:crystal_stalagmite(x, y, z, area, data)
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--content IDs
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local c_crystal = minetest.get_content_id("caverealms:glow_crystal")
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local c_crystore = minetest.get_content_id("caverealms:glow_ore")
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--stalactite spawner
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function caverealms:stalactite(x,y,z, area, data)
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--contest ids
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local c_stone = minetest.get_content_id("default:stone")--("caverealms:limestone")
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for j = 0, H_CRY do --y
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for k = -2, 2 do --x
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for l = -2, 2 do --z
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if j <= math.ceil(H_CRY / 4) then --base
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if k*k + l*l <= 4 then --make a circle
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local vi = area:index(x+k, y+j, z+l-2)
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if math.random(3) == 1 then
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data[vi] = c_crystal
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else
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data[vi] = c_crystore
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end
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local bot = math.random(-H_LAC, -6) --grab a random height for the stalagmite
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for j = bot, 0 do --y
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for k = -3, 3 do
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for l = -3, 3 do
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if j >= -1 then
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if k*k + l*l <= 9 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_stone
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end
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else --top
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if k >= -1 and k <= 1 then
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if l >= -1 and l <= 1 then
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if j <= H_CRY - 2 then
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local vi = area:index(x+k, y+j, z+l-2)
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if math.random(3) <= 2 then
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data[vi] = c_crystal
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else
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data[vi] = c_crystore
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end
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else
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local vi = area:index(x, y+j, z-2)
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data[vi] = c_crystal
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end
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elseif j >= bot/5 then
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if k*k + l*l <= 4 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_stone
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end
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elseif j >= bot/5 * 3 then
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if k*k + l*l <= 1 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_stone
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end
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else
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local vi = area:index(x, y+j, z-3)
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data[vi] = c_stone
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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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--glowing crystal stalagmite spawner
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function caverealms:crystal_stalagmite(x,y,z, area, data)
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--contest ids
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local c_stone = minetest.get_content_id("default:stone")
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local c_crystal = minetest.get_content_id("caverealms:glow_crystal")
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local c_crystore = minetest.get_content_id("caverealms:glow_ore")
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local top = math.random(5,H_CRY) --grab a random height for the stalagmite
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for j = 0, top do --y
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for k = -3, 3 do
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for l = -3, 3 do
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if j == 0 then
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if k*k + l*l <= 9 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_stone
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end
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elseif j <= top/5 then
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if k*k + l*l <= 4 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_crystore
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end
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elseif j <= top/5 * 3 then
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if k*k + l*l <= 1 then
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local vi = area:index(x+k, y+j, z+l-3)
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data[vi] = c_crystal
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end
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else
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local vi = area:index(x, y+j, z-3)
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data[vi] = c_crystal
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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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-- On generated function
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minetest.register_on_generated(function(minp, maxp, seed)
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@ -256,20 +289,27 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local nixyz = 1 --short for node index xyz
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local nixz = 1 --node index xz
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local stable = {} --stability for ground
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local dirt = {} --table for dirt
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local dirt = {} --table for ground surface
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local chumid = y0 + sidelen / 2 --middle of the current chunk
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local roof = {}
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local nixyz2 = 1
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local nixz2 = 1
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local stable2 = {}
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for z = z0, z1 do --for each xy plane progressing northwards
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for x = x0, x1 do
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local si = x - x0 + 1 --stability index
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dirt[si] = 0 --no dirt here... yet
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roof[si] = 0
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local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name --grab the name of the node just below
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if nodename == "air"
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or nodename == "default:water_source"
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or nodename == "default:lava_source" then --if a cave or any kind of lake
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stable[si] = 0 --this is not stable for plants or falling nodes above
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stable2[si] = 0
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else -- all else including ignore in ungenerated chunks
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stable[si] = STABLE --stuff can safely go above
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stable2[si] = STABLE
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end
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end
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for y = y1, y0, -1 do -- for each x row progressing downwards
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@ -286,6 +326,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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end
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local density = nvals_cave[nixyz] - grad --how dense is the emptiness?
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if density < 0 and density > -0.7 then -- if cavern "shell"
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local nodename = minetest.get_node({x=x,y=y,z=z}).name --grab the name of the node
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data[vi] = c_air --make emptiness
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if density < STOTHR and stable[si] <= STABLE then
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dirt[si] = dirt[si] + 1
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@ -320,8 +361,49 @@ minetest.register_on_generated(function(minp, maxp, seed)
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nixz = nixz - sidelen --shift the 2D index down a layer
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end
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nixz = nixz + sidelen --shift the 2D index up a layer
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--second loop to obtain ceiling
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for y = y0, y1 do -- for each x row progressing downwards
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local vi = area:index(x0, y, z) --grab the index of the node to edit
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for x = x0, x1 do -- for each node do
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--here's the good part
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local si = x - x0 + 1 --stability index
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local cavemid = chumid + nvals_wave[nixz2] * WAVAMP --grab the middle of the cave's amplitude
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local grad
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if y > cavemid then
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grad = ((y - cavemid) / HISCAL) ^ HIEXP --for the ceiling
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else
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grad = ((cavemid - y) / LOSCAL) ^ LOEXP --for the floor
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end
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local density = nvals_cave[nixyz2] - grad --how dense is the emptiness?
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if density < 0 and density > -0.7 then -- if cavern "shell"
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if density < STOTHR and stable2[si] <= STABLE then
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roof[si] = roof[si] + 1
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else
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stable2[si] = stable2[si] + 1
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end
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elseif roof[si] >= 1 then --and stable2[si] >= 2 then -- node above surface
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if math.random() <= STALCHA then
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local ai = area:index(x,y+1,z)
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if data[ai] ~= c_air then
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caverealms:stalactite(x, y, z, area, data)
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end
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end
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roof[si] = 0
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else -- solid rock
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stable2[si] = 0
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end
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nixyz2 = nixyz2 + 1 --increment the 3D index
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nixz2 = nixz2 + 1 --increment the 2D index
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vi = vi + 1 --increment the area index
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end
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nixz2 = nixz2 - sidelen
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end
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nixz2 = nixz2 + sidelen
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end
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--write these changes to the world
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vm:set_data(data)
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vm:set_lighting({day=0, night=0})
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