mtcontrib/mapgen_rivers
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Add all code for generating a grid on world creation.

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Not tested ; will likely need much testing and bugfix.
This commit is contained in:
Gaël C
2021-06-03 20:08:57 +02:00
parent 19efeaaff6
commit cb297af047
4 changed files with 105 additions and 29 deletions
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42
polygons.lua
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@ -7,51 +7,39 @@ end
local world_data_path = minetest.world_data_path
minetest.mkdir(world_data_path)
local load_map = dofile(modpath .. 'load.lua')
dofile(modpath .. 'load.lua')
local function copy_if_needed(filename)
local wfilename = world_data_path..filename
local wfile = io.open(wfilename, 'rb')
if wfile then
wfile:close()
return
end
local mfilename = mod_data_path..filename
local mfile = io.open(mfilename, 'rb')
local wfile = io.open(wfilename, 'wb')
wfile:write(mfile:read("*all"))
mfile:close()
wfile:close()
-- Try to read file 'size'
local sfile = io.open(world_data_path..'size', 'r')
if not sfile then
-- Generate a map!!
local generate = dofile(mapgen_rivers.modpath .. '/generate.lua')
generate()
sfile = io.open(world_data_path..'size', 'r')
end
copy_if_needed('size')
local sfile = io.open(world_data_path..'size', 'r')
-- Read the map
-- TODO: if data has just been generated, transfer it without reloading everything
local X = tonumber(sfile:read('*l'))
local Z = tonumber(sfile:read('*l'))
sfile:close()
copy_if_needed('dem')
local dem = load_map('dem', 2, true, X*Z)
copy_if_needed('lakes')
local lakes = load_map('lakes', 2, true, X*Z)
copy_if_needed('dirs')
local dirs = load_map('dirs', 1, false, X*Z)
copy_if_needed('rivers')
local rivers = load_map('rivers', 4, false, X*Z)
local dem = mapgen_rivers.load_map('dem', 2, true, X*Z)
local lakes = mapgen_rivers.load_map('lakes', 2, true, X*Z)
local dirs = mapen_rivers.load_map('dirs', 1, false, X*Z)
local rivers = mapgen_rivers.load_map('rivers', 4, false, X*Z)
copy_if_needed('offset_x')
local offset_x = load_map('offset_x', 1, true, X*Z)
for k, v in ipairs(offset_x) do
offset_x[k] = (v+0.5)/256
end
copy_if_needed('offset_y')
local offset_z = load_map('offset_y', 1, true, X*Z)
for k, v in ipairs(offset_z) do
offset_z[k] = (v+0.5)/256
end
-- Should have finished loading
-- To index a flat array representing a 2D map
local function index(x, z)
return z*X+x+1
end