mtcontrib/mapgen_rivers
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Generate and load map after mod loading

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This has needed to globalize map tables
This commit is contained in:
Gaël C
2021-06-05 11:24:28 +02:00
parent b02387944d
commit 51f3a2719d
3 changed files with 48 additions and 24 deletions
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60
polygons.lua
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@ -9,36 +9,41 @@ minetest.mkdir(world_data_path)
dofile(modpath .. 'load.lua')
mapgen_rivers.grid = {}
local X = 1000
local Z = 1000
-- Try to read file 'size'
local sfile = io.open(world_data_path..'size', 'r')
if not sfile then
if sfile then
X, Z = tonumber(sfile:read('*l')), tonumber(sfile:read('*l'))
sfile:close()
minetest.register_on_mods_loaded(function()
local grid = mapgen_rivers.grid
grid.dem = mapgen_rivers.load_map('dem', 2, true, X*Z)
grid.lakes = mapgen_rivers.load_map('lakes', 2, true, X*Z)
grid.dirs = mapgen_rivers.load_map('dirs', 1, false, X*Z)
grid.rivers = mapgen_rivers.load_map('rivers', 4, false, X*Z)
grid.offset_x = mapgen_rivers.load_map('offset_x', 1, true, X*Z)
grid.offset_y = mapgen_rivers.load_map('offset_y', 1, true, X*Z)
end)
else
-- Generate a map!!
local generate = dofile(mapgen_rivers.modpath .. '/generate.lua')
generate()
sfile = io.open(world_data_path..'size', 'r')
minetest.register_on_mods_loaded(generate)
end
-- 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()
minetest.register_on_mods_loaded(function()
local offset_x, offset_y = mapgen_rivers.grid.offset_x, mapgen_rivers.grid.offset_y
for i=1, #offset_x do
offset_x[i] = (offset_x[i]+0.5) * (1/256)
offset_y[i] = (offset_y[i]+0.5) * (1/256)
end
end)
local dem = mapgen_rivers.load_map('dem', 2, true, X*Z)
local lakes = mapgen_rivers.load_map('lakes', 2, true, X*Z)
local dirs = mapgen_rivers.load_map('dirs', 1, false, X*Z)
local rivers = mapgen_rivers.load_map('rivers', 4, false, X*Z)
local offset_x = mapgen_rivers.load_map('offset_x', 1, true, X*Z)
for k, v in ipairs(offset_x) do
offset_x[k] = (v+0.5)/256
end
local offset_z = mapgen_rivers.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
mapgen_rivers.grid.size = {x=X, y=Z}
local function index(x, z)
return z*X+x+1
@ -86,6 +91,15 @@ local function make_polygons(minp, maxp)
print("Generating polygon map")
print(minp.x, maxp.x, minp.z, maxp.z)
local grid = mapgen_rivers.grid
local dem = grid.dem
local lakes = grid.lakes
local dirs = grid.dirs
local rivers = grid.rivers
local offset_x = grid.offset_x
local offset_z = grid.offset_y
if not init then
if glaciers then
noise_heat = minetest.get_perlin(mapgen_rivers.noise_params.heat)