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mapgen_rivers
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Use settings from minetest.conf

This commit is contained in:
Gael-de-Sailly 2020-04-14 17:53:36 +02:00 committed by Gaël de Sailly
parent af7a7ce26d
commit 14163681cc
2 changed files with 62 additions and 27 deletions
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48
init.lua
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@ -66,28 +66,15 @@ local blocksize = 12
local sea_level = 1
local min_catchment = 25
local max_catchment = 40000
local riverbed_slope = 0.4
local storage = minetest.get_mod_storage()
if storage:contains("blocksize") then
blocksize = storage:get_int("blocksize")
else
storage:set_int("blocksize", blocksize)
end
if storage:contains("sea_level") then
sea_level = storage:get_int("sea_level")
else
storage:set_int("sea_level", sea_level)
end
if storage:contains("min_catchment") then
min_catchment = storage:get_float("min_catchment")
else
storage:set_float("min_catchment", min_catchment)
end
if storage:contains("max_catchment") then
max_catchment = storage:get_float("max_catchment")
else
storage:set_float("max_catchment", max_catchment)
end
local get_settings = dofile(modpath .. 'settings.lua')
blocksize = get_settings('blocksize', 'int', blocksize)
sea_level = get_settings('sea_level', 'int', sea_level)
min_catchment = get_settings('min_catchment', 'float', min_catchment)
max_catchment = get_settings('max_catchment', 'float', max_catchment)
riverbed_slope = get_settings('riverbed_slope', 'float', riverbed_slope) * blocksize
-- Width coefficients: coefficients solving
-- wfactor * min_catchment ^ wpower = 1/(2*blocksize)
@ -218,19 +205,24 @@ local function generate(minp, maxp, seed)
local i00, i01, i11, i10 = unpack(poly.i)
local is_river = false
local depth_factor = 0
local r_west, r_north, r_east, r_south = unpack(poly.rivers)
if xf >= r_east then
is_river = true
depth_factor = xf-r_east
xf = 1
elseif xf <= r_west then
is_river = true
depth_factor = r_west-xf
xf = 0
end
if zf >= r_south then
is_river = true
depth_factor = zf-r_south
zf = 1
elseif zf <= r_north then
is_river = true
depth_factor = r_north-zf
zf = 0
end
@ -238,15 +230,19 @@ local function generate(minp, maxp, seed)
local c_NW, c_NE, c_SE, c_SW = unpack(poly.river_corners)
if xf+zf <= c_NW then
is_river = true
depth_factor = c_NW-xf-zf
xf, zf = 0, 0
elseif 1-xf+zf <= c_NE then
is_river = true
depth_factor = c_NE-1+xf-zf
xf, zf = 1, 0
elseif 2-xf-zf <= c_SE then
is_river = true
depth_factor = c_SE-2+xf+zf
xf, zf = 1, 1
elseif xf+1-zf <= c_SW then
is_river = true
depth_factor = c_SW-xf-1+zf
xf, zf = 0, 1
end
end
@ -265,19 +261,17 @@ local function generate(minp, maxp, seed)
xf, zf
))
local lake_height = math.floor(poly.lake)
local lake_height = math.max(math.floor(poly.lake), terrain_height)
if is_river then
terrain_height = math.min(math.max(lake_height, sea_level) - math.floor(1+depth_factor*riverbed_slope), terrain_height)
end
local is_lake = lake_height > terrain_height
local ivm = a:index(x, minp.y-1, z)
if terrain_height >= minp.y then
for y=minp.y, math.min(maxp.y, terrain_height) do
if y == terrain_height then
if is_lake or y <= sea_level then
data[ivm] = c_sand
elseif is_river then
data[ivm] = c_rwater
else
data[ivm] = c_lawn
end

41
settings.lua Normal file
View File

@ -0,0 +1,41 @@
local storage = minetest.get_mod_storage()
local settings = minetest.settings
local function get_settings(key, dtype, default)
if storage:contains(key) then
if dtype == "string" then
return storage:get_string(key)
elseif dtype == "int" then
return storage:get_int(key)
elseif dtype == "float" then
return storage:get_float(key)
end
end
local conf_val = settings:get('mapgen_rivers_' .. key)
if conf_val then
if dtype == "int" then
conf_val = tonumber(conf_val)
storage:set_int(key, conf_val)
elseif dtype == "float" then
conf_val = tonumber(conf_val)
storage:set_float(key, conf_val)
elseif dtype == "string" then
storage:set_string(key, conf_val)
end
return conf_val
else
if dtype == "int" then
storage:set_int(key, default)
elseif dtype == "float" then
storage:set_float(key, default)
elseif dtype == "string" then
storage:set_string(key, default)
end
return default
end
end
return get_settings