mtcontrib/mapgen_rivers
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Started refactoring code structure to support a separate mapgen thread

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Probably not working for now (untested), still some things to do
Also making the code cleaner
This commit is contained in:
Gaël C
2023-12-28 15:27:36 +01:00
parent 1ad8c96b8c
commit 11e6e72324
7 changed files with 507 additions and 495 deletions
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79
polygons.lua
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@ -1,80 +1,5 @@
local modpath = mapgen_rivers.modpath
local mod_data_path = modpath .. 'river_data/'
if not io.open(mod_data_path .. 'size', 'r') then
mod_data_path = modpath .. 'demo_data/'
end
local world_data_path = mapgen_rivers.world_data_path
minetest.mkdir(world_data_path)
dofile(modpath .. 'load.lua')
mapgen_rivers.grid = {}
local X = mapgen_rivers.settings.grid_x_size
local Z = mapgen_rivers.settings.grid_z_size
local function offset_converter(o)
return (o + 0.5) * (1/256)
end
local load_all = mapgen_rivers.settings.load_all
-- Try to read file 'size'
local sfile = io.open(world_data_path..'size', 'r')
local first_mapgen = true
if sfile then
X, Z = tonumber(sfile:read('*l')), tonumber(sfile:read('*l'))
sfile:close()
first_mapgen = false
end
if first_mapgen then
-- Generate a map!!
local pregenerate = dofile(mapgen_rivers.modpath .. '/pregenerate.lua')
minetest.register_on_mods_loaded(function()
minetest.log("action", '[mapgen_rivers] Generating grid, this may take a while...')
pregenerate(load_all)
if load_all then
local offset_x = mapgen_rivers.grid.offset_x
local offset_y = mapgen_rivers.grid.offset_y
for i=1, X*Z do
offset_x[i] = offset_converter(offset_x[i])
offset_y[i] = offset_converter(offset_y[i])
end
end
end)
end
-- if data not already loaded
if not (first_mapgen and load_all) then
local load_map
if load_all then
load_map = mapgen_rivers.load_map
else
load_map = mapgen_rivers.interactive_loader
end
minetest.register_on_mods_loaded(function()
if load_all then
minetest.log("action", '[mapgen_rivers] Loading full grid')
else
minetest.log("action", '[mapgen_rivers] Loading grid as interactive loaders')
end
local grid = mapgen_rivers.grid
grid.dem = load_map('dem', 2, true, X*Z)
grid.lakes = load_map('lakes', 2, true, X*Z)
grid.dirs = load_map('dirs', 1, false, X*Z)
grid.rivers = load_map('rivers', 4, false, X*Z)
grid.offset_x = load_map('offset_x', 1, true, X*Z, offset_converter)
grid.offset_y = load_map('offset_y', 1, true, X*Z, offset_converter)
end)
end
mapgen_rivers.grid.size = {x=X, y=Z}
local X = mapgen_rivers.grid.size.x
local Z = mapgen_rivers.grid.size.y
local function index(x, z)
return z*X+x+1