mtcontrib
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mapgen_rivers
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mapgen_rivers/generate.lua

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Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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local EvolutionModel = dofile(mapgen_rivers.modpath .. '/terrainlib_lua/erosion.lua')
local twist = dofile(mapgen_rivers.modpath .. '/terrainlib_lua/twist.lua')
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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local blocksize = 12
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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local variation_speed = 70
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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local np_base = {
offset = 0,
scale = 200,
seed = 2469,
octaves = 8,
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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spread = {x=4000/blocksize, y=4000/blocksize, z=4000/blocksize},
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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persist = 0.6,
lacunarity = 2,
}
local time = 10
local time_step = 1
local niter = math.ceil(time/time_step)
time_step = time / niter
local function generate()
Generate and load map after mod loading This has needed to globalize map tables
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local grid = mapgen_rivers.grid
local size = grid.size
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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local seed = tonumber(minetest.get_mapgen_setting("seed"))
np_base.seed = (np_base.seed or 0) + seed
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
2021-06-03 20:08:57 +02:00
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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local nobj_base = PerlinNoiseMap(np_base, {x=size.x, y=1, z=size.y})
--nobj_base:calc_3d_map({x=0, y=0, z=0})
--local dem = nobj_base:get_map_slice({z=1}, {z=1})
local dem = nobj_base:get_3d_map_flat({x=0, y=0, z=0})
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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dem.X = size.x
dem.Y = size.y
local model = EvolutionModel()
model.dem = dem
local ref_dem = model:define_isostasy(dem)
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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local variation_step = variation_speed * time_step
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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for i=1, niter do
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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--nobj_base:get_map_slice({z=i+1}, {z=1}, ref_dem)
nobj_base:get_3d_map_flat({x=0, y=variation_step*i, z=0}, ref_dem)
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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model:diffuse(time_step)
model:flow()
model:erode(time_step)
model:isostasy()
end
model:flow()
local mfloor = math.floor
local mmin, mmax = math.min, math.max
local offset_x, offset_y = twist(model.dirs, model.rivers, 5)
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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for i=1, size.x*size.y do
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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offset_x[i] = mmin(mmax(offset_x[i]*256, -128), 127)
offset_y[i] = mmin(mmax(offset_y[i]*256, -128), 127)
end
mapgen_rivers.write_map('dem', model.dem, 2)
mapgen_rivers.write_map('lakes', model.lakes, 2)
mapgen_rivers.write_map('dirs', model.dirs, 1)
mapgen_rivers.write_map('rivers', model.rivers, 4)
mapgen_rivers.write_map('offset_x', offset_x, 1)
mapgen_rivers.write_map('offset_y', offset_y, 1)
local sfile = io.open(mapgen_rivers.world_data_path .. 'size', "w")
Various bugfixes and workarounds Now working in pure Lua! Some parts of the code are very hacky (e.g. noise) and the way new and old codes have been glued together is sometimes to be rewritten. But at least it works.
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sfile:write(size.x..'\n'..size.y)
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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sfile:close()
Generate and load map after mod loading This has needed to globalize map tables
2021-06-05 11:24:28 +02:00
grid.dem = model.dem
grid.lakes = model.lakes
grid.dirs = model.dirs
grid.rivers = model.rivers
grid.offset_x = offset_x
grid.offset_y = offset_y
Add all code for generating a grid on world creation. Not tested ; will likely need much testing and bugfix.
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end
return generate