minetest_game/mods/weather/api.lua

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local CYCLE = 8 -- Time period of cyclic clouds update in seconds
weather = {}
-- default implementation is empty
function weather.get(player)
return {}
end
local function do_update()
for _, player in ipairs(minetest.get_connected_players()) do
local params = weather.get(player)
assert(params ~= nil, "weather.get() must not return nil")
if params.clouds then
player:set_clouds(params.clouds)
end
if params.lighting then
player:set_lighting(params.lighting)
end
end
end
local function cyclic_update()
do_update()
minetest.after(CYCLE, cyclic_update)
end
minetest.after(0, cyclic_update)
-- Update on player join to instantly alter clouds from the default
minetest.register_on_joinplayer(function(player)
do_update()
end)