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mapgen_rivers
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Added snow and ice in function of temperature. 

Uses noise parameters of builtin biomegen
This commit is contained in:
Gael-de-Sailly 2020-05-23 18:13:00 +02:00
parent 4edd1a946e
commit 625768f967
1 changed files with 37 additions and 5 deletions
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42
init.lua
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@ -54,10 +54,18 @@ local noise_distort_params = {
flags = "absvalue",
}
local noise_x_obj, noise_z_obj, noise_distort_obj
local noise_heat_params = minetest.get_mapgen_setting_noiseparams('mg_biome_np_heat')
local noise_heat_blend_params = minetest.get_mapgen_setting_noiseparams('mg_biome_np_heat_blend')
local elevation_chill = 0.25
noise_heat_params.offset = noise_heat_params.offset + sea_level*elevation_chill
local noise_x_obj, noise_z_obj, noise_distort_obj, noise_heat_obj, noise_heat_blend_obj
local noise_x_map = {}
local noise_z_map = {}
local noise_distort_map = {}
local noise_heat_map = {}
local noise_heat_blend_map = {}
local mapsize
local init = false
@ -76,13 +84,18 @@ local function generate(minp, maxp, seed)
}
noise_x_obj = minetest.get_perlin_map(noise_x_params, mapsize)
noise_z_obj = minetest.get_perlin_map(noise_z_params, mapsize)
noise_heat_obj = minetest.get_perlin_map(noise_heat_params, chulens)
noise_heat_blend_obj = minetest.get_perlin_map(noise_heat_blend_params, chulens)
noise_distort_obj = minetest.get_perlin_map(noise_distort_params, chulens)
init = true
end
local minp2d = {x=minp.x, y=minp.z}
noise_x_obj:get_3d_map_flat(minp, noise_x_map)
noise_z_obj:get_3d_map_flat(minp, noise_z_map)
noise_distort_obj:get_2d_map_flat(minp, noise_distort_map)
noise_distort_obj:get_2d_map_flat(minp2d, noise_distort_map)
noise_heat_obj:get_2d_map_flat(minp2d, noise_heat_map)
noise_heat_blend_obj:get_2d_map_flat(minp2d, noise_heat_blend_map)
local xmin, xmax, zmin, zmax = minp.x, maxp.x, minp.z, maxp.z
local i = 0
@ -115,9 +128,12 @@ local function generate(minp, maxp, seed)
local c_stone = minetest.get_content_id("default:stone")
local c_dirt = minetest.get_content_id("default:dirt")
local c_lawn = minetest.get_content_id("default:dirt_with_grass")
local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
local c_snow = minetest.get_content_id("default:snowblock")
local c_sand = minetest.get_content_id("default:sand")
local c_water = minetest.get_content_id("default:water_source")
local c_rwater = minetest.get_content_id("default:river_water_source")
local c_ice = minetest.get_content_id("default:ice")
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
vm:get_data(data)
@ -129,11 +145,14 @@ local function generate(minp, maxp, seed)
local incrY = -mapsize.x
local incrX = 1 - mapsize.y*incrY
local incrZ = mapsize.x*mapsize.y - mapsize.x*incrX - mapsize.x*mapsize.y*incrY
local i2d = 1
for z = minp.z, maxp.z do
for x = minp.x, maxp.x do
local ivm = a:index(x, minp.y, z)
local ground_above = false
local temperature = noise_heat_map[i2d]+noise_heat_blend_map[i2d]
for y = maxp.y+1, minp.y, -1 do
local xn = noise_x_map[nid]
local zn = noise_z_map[nid]
@ -154,13 +173,25 @@ local function generate(minp, maxp, seed)
if y <= terrain then
if y <= terrain-1 or ground_above then
data[ivm] = c_stone
elseif is_lake then
elseif is_lake or y < sea_level then
data[ivm] = c_sand
else
data[ivm] = c_lawn
local temperature_y = temperature - y*elevation_chill
if temperature_y >= 15 then
data[ivm] = c_lawn
elseif temperature_y >= 0 then
data[ivm] = c_dirtsnow
else
data[ivm] = c_snow
end
end
elseif y <= lake and lake > sea_level then
data[ivm] = c_rwater
local temperature_y = temperature - y*elevation_chill
if temperature_y >= 0 then
data[ivm] = c_rwater
else
data[ivm] = c_ice
end
elseif y <= sea_level then
data[ivm] = c_water
end
@ -172,6 +203,7 @@ local function generate(minp, maxp, seed)
nid = nid + incrY
end
nid = nid + incrX
i2d = i2d + 1
end
nid = nid + incrZ
end