mtcontrib/mapgen_rivers
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Added caves (hardcoded for now)

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This commit is contained in:
Gaël C 2024-02-12 22:22:24 +01:00
parent b406bebb7b
commit 77b05f044a
1 changed files with 52 additions and 7 deletions
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59
mapgen.lua
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@ -28,12 +28,13 @@ local floor, min = math.floor, math.min
local data = {}
local noise_x_obj, noise_z_obj, noise_distort_obj, noise_heat_obj, noise_heat_blend_obj
local noise_x_obj, noise_z_obj, noise_distort_obj, noise_heat_obj, noise_heat_blend_obj, noise_cave_obj
local noise_x_map = {}
local noise_z_map = {}
local noise_distort_map = {}
local noise_heat_map = {}
local noise_heat_blend_map = {}
local noise_cave = {}
local mapsize
local init = false
@ -41,6 +42,18 @@ local sumtime = 0
local sumtime2 = 0
local ngen = 0
local use_caves = true
local np_cave = {
offset = 0,
scale = 8,
spread = {x=256, y=128, z=256},
seed = -9152,
octaves = 4,
persist = 0.65,
lacunarity = 2,
flags = "absvalue",
}
function mapgen_rivers.make_chunk(minp, maxp, seed)
minetest.log("info", ("[mapgen_rivers] Generating from %s to %s"):format(minetest.pos_to_string(minp), minetest.pos_to_string(maxp)))
@ -65,6 +78,9 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
noise_heat_obj = minetest.get_perlin_map(mapgen_rivers.noise_params.heat, chulens)
noise_heat_blend_obj = minetest.get_perlin_map(mapgen_rivers.noise_params.heat_blend, chulens)
end
if use_caves then
noise_cave_obj = minetest.get_perlin_map(np_cave, mapsize)
end
init = true
end
@ -79,7 +95,9 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
noise_heat_obj:get_2d_map_flat(minp2d, noise_heat_map)
noise_heat_blend_obj:get_2d_map_flat(minp2d, noise_heat_blend_map)
end
if use_caves then
noise_cave_obj:get_3d_map_flat(minp, noise_cave)
end
local terrain_map, lake_map, incr, i_origin
if use_distort then
@ -146,6 +164,7 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
local c_stone = minetest.get_content_id("mapgen_stone")
local c_water = minetest.get_content_id("mapgen_water_source")
local c_rwater = minetest.get_content_id("mapgen_river_water_source")
local c_air = minetest.get_content_id("air")
local c_dirt, c_lawn, c_dirtsnow, c_snow, c_sand, c_ice
if use_biomes then
@ -178,7 +197,7 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
if use_biomes then
temperature = noise_heat_map[i2d]+noise_heat_blend_map[i2d]
end
local terrain, lake
local terrain, lake, caveness
if not use_distort then
terrain = terrain_map[i2d]
lake = lake_map[i2d]
@ -200,6 +219,10 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
lake = min(lake_map[i0], lake_map[i1], lake_map[i2], lake_map[i3])
end
if use_caves then
noise_cave[nid] = noise_cave[nid] < math.min(math.max(terrain - y, 0), 100) ^ 0.5 / 10
end
if y <= maxp.y then
local is_lake = lake > terrain
@ -249,10 +272,32 @@ function mapgen_rivers.make_chunk(minp, maxp, seed)
end
if use_biomegen_mod then
biomegen.generate_all(data, a, vm, minp, maxp, seed)
else
vm:set_data(data)
minetest.generate_ores(vm, minp, maxp)
biomegen.generate_biomes(data, a, minp, maxp)
end
if use_caves then
local i = 1
for z=minp.z, maxp.z do
for y=minp.y, maxp.y do
local vi = a:index(minp.x, y, z)
for x=minp.x, maxp.x do
if noise_cave[i] then
data[vi] = c_air
end
i = i + 1
vi = vi + 1
end
end
i = i + chulens.x -- Skip etra row
end
end
vm:set_data(data)
if use_biomegen_mod then
biomegen.place_all_decos(data, a, vm, minp, maxp, seed)
end
minetest.generate_ores(vm, minp, maxp)
if use_biomegen_mod then
vm:get_data(data)
biomegen.dust_top_nodes(data, a, vm, minp, maxp)
end
vm:set_lighting({day = 0, night = 0})