forked from mtcontrib/minetest-mod-snow
do not generate in deserts, doesn't seem to work… but better than nothing
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@ -1,3 +1,14 @@
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-- https://github.com/paramat/meru/blob/master/init.lua#L52
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-- Parameters must match mgv6 biome noise
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local np_default = {
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offset = 0,
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scale = 1,
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spread = {x=250, y=250, z=250},
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seed = 9130,
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octaves = 3,
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persist = 0.5
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}
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-- 2D noise for coldness
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local np_cold = {
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@ -62,7 +73,29 @@ local function is_plantlike(id)
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return true
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end
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local c, known_plants
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local snowable_ids = {}
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local function is_snowable(id)
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if snowable_ids[id] ~= nil then
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return snowable_ids[id]
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end
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local node = minetest.registered_nodes[minetest.get_name_from_content_id(id)]
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if not node then
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snowable_ids[id] = false
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return false
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end
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local drawtype = node.drawtype
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if drawtype
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and drawtype ~= "normal"
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and drawtype ~= "allfaces_optional"
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and drawtype ~= "glasslike" then
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snowable_ids[id] = false
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return false
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end
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snowable_ids[id] = true
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return true
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end
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local c, replacements
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local function define_contents()
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c = {
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dirt_with_grass = minetest.get_content_id("default:dirt_with_grass"),
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@ -85,7 +118,7 @@ local function define_contents()
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papyrus = minetest.get_content_id("default:papyrus"),
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sand = minetest.get_content_id("default:sand"),
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}
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known_plants = snow.known_plants or {}
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replacements = snow.known_plants or {}
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end
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minetest.register_on_generated(function(minp, maxp, seed)
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@ -112,8 +145,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local sidelen = x1 - x0 + 1
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local chulens = {x=sidelen, y=sidelen, z=sidelen}
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local nvals_cold = minetest.get_perlin_map(np_cold, chulens):get2dMap_flat({x=x0, y=z0})
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local nvals_ice = minetest.get_perlin_map(np_ice, chulens):get2dMap_flat({x=x0, y=z0})
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local nvals_default = minetest.get_perlin_map(np_default, chulens):get2dMap_flat({x=x0+150, y=z0+50})
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local nvals_cold, nvals_ice
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-- Choose biomes
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local pr = PseudoRandom(seed+57)
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@ -134,7 +167,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
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for z = z0, z1 do
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for x = x0, x1 do
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local in_biome = false
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local test = math.min(nvals_cold[ni], 1)
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local test = nvals_default[ni]
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if test < 0.35 then
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if not nvals_cold then
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nvals_cold = minetest.get_perlin_map(np_cold, chulens):get2dMap_flat({x=x0, y=z0})
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end
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test = math.min(nvals_cold[ni], 1)
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if smooth
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and not snowy then
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if (test > 0.73 or (test > 0.43 and pr:next(0,29) > (0.73 - test) * 100 )) then
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@ -143,6 +181,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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elseif test > 0.53 then
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in_biome = true
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end
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end
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if not in_biome then
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if alpine and test > 0.43 then
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@ -180,6 +219,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
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end
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else
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write_to_map = true
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if not nvals_ice then
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nvals_ice = minetest.get_perlin_map(np_ice, chulens):get2dMap_flat({x=x0, y=z0})
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end
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local icetype = nvals_ice[ni]
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local cool = icetype > 0 -- only spawns ice on edge of water
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local icebergs = icetype > -0.2 and icetype <= 0
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@ -286,22 +328,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
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num = num+1
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end
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end
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elseif c_ground == c.leaves
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or c_ground == c.jungleleaves
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or c_ground == c.apple then
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if alpine then
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-- make stone pillars out of trees
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for y = ground_y, math.max(-6, minp.y-6), -1 do
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local stone = area:index(x, y, z)
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if data[stone] == c.stone then
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break
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end
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data[stone] = c.stone
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end
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end
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-- put snow onto it
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snow_tab[num] = {ground_y, z, x, test}
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num = num+1
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elseif c_ground == c.sand then
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if icy then
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data[node] = c.ice
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@ -322,13 +348,49 @@ minetest.register_on_generated(function(minp, maxp, seed)
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break
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end
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end
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elseif is_plantlike(c_ground) then
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local vi = area:index(x, ground_y-1, z)
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if data[vi] == c.dirt_with_grass then
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-- replace other plants with shrubs
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elseif alpine then
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-- make stone pillars out of trees and other stuff
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for y = ground_y, math.max(-6, minp.y-6), -1 do
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local stone = area:index(x, y, z)
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if data[stone] == c.stone then
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break
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end
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data[stone] = c.stone
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end
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-- put snow onto it
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snow_tab[num] = {ground_y, z, x, test}
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num = num+1
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else
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if is_snowable(c_ground) then
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-- put snow onto it
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snow_tab[num] = {ground_y, z, x, test}
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num = num+1
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end
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for y = 0, 12 do
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y = ground_y-y
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local vi = area:index(x, y, z)
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local nd = data[vi]
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local plantlike = is_plantlike(nd)
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if replacements[nd] then
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data[vi] = replacements[nd]
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if plantlike then
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param2s[vi] = pr:next(0,179)
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end
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elseif nd == c.dirt_with_grass then
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data[vi] = c.dirt_with_snow
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data[node] = known_plants[c_ground] or c.snow_shrub
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param2s[node] = pr:next(0,179)
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break
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elseif plantlike then
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local under = area:index(x, y-1, z)
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if data[under] == c.dirt_with_grass then
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-- replace other plants with shrubs
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data[vi] = c.snow_shrub
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param2s[vi] = pr:next(0,179)
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data[under] = c.dirt_with_snow
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break
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end
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elseif nd == c.stone then
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break
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end
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end
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end
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end
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@ -190,8 +190,7 @@ nodedef.drop = "snow:shrub"
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nodedef.furnace_burntime = 3
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minetest.register_node("snow:shrub_covered", nodedef)
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-- Flowers
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if rawget(_G, "flowers") then
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-- broken flowers
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snow.known_plants = {}
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@ -214,6 +213,28 @@ if rawget(_G, "flowers") then
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end
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end
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-- Leaves
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local leaves = minetest.registered_nodes["default:leaves"]
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nodedef = {
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description = "Snow Leaves",
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tiles = {"snow_leaves.png"},
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waving = 1,
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visual_scale = leaves.visual_scale,
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drawtype = leaves.drawtype,
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paramtype = leaves.paramtype,
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groups = leaves.groups,
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drop = leaves.drop,
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sounds = leaves.sounds,
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}
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nodedef.groups.flammable = 1
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minetest.register_node("snow:leaves", nodedef)
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snow.known_plants[minetest.get_content_id("default:leaves")] = minetest.get_content_id("snow:leaves")
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-- TODO
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snow.known_plants[minetest.get_content_id("default:apple")] = minetest.get_content_id("default:apple")
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snow.known_plants[minetest.get_content_id("default:jungleleaves")] = minetest.get_content_id("default:jungleleaves")
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local function snow_onto_dirt(pos)
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BIN
textures/snow_apple.png
Normal file
BIN
textures/snow_apple.png
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Binary file not shown.
After Width: | Height: | Size: 249 B |
BIN
textures/snow_leaves.png
Normal file
BIN
textures/snow_leaves.png
Normal file
Binary file not shown.
After Width: | Height: | Size: 190 B |
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