forked from MineClone5/MineClone5
185 lines
6.3 KiB
Lua
185 lines
6.3 KiB
Lua
weather = {
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-- weather states, 'none' is default, other states depends from active mods
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state = "none",
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-- player list for saving player meta info
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players = {},
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-- time when weather should be re-calculated
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next_check = 0,
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-- default weather recalculation interval
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check_interval = 300,
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-- weather min duration
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min_duration = 240,
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-- weather max duration
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max_duration = 3600,
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-- weather calculated end time
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end_time = nil,
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-- registered weathers
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reg_weathers = {},
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-- automaticly calculates intervals and swap weathers
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auto_mode = true,
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-- global flag to disable/enable ABM logic.
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allow_abm = true,
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}
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weather.get_rand_end_time = function(min_duration, max_duration)
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if min_duration ~= nil and max_duration ~= nil then
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return os.time() + math.random(min_duration, max_duration);
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else
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return os.time() + math.random(weather.min_duration, weather.max_duration);
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end
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end
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weather.is_outdoor = function(pos)
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if minetest.get_node_light({x=pos.x, y=pos.y + 1, z=pos.z}, 0.5) == 15 then
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return true
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end
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return false
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end
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-- checks if player is undewater. This is needed in order to
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-- turn off weather particles generation.
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weather.is_underwater = function(player)
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local ppos = player:getpos()
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local offset = player:get_eye_offset()
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local player_eye_pos = {x = ppos.x + offset.x,
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y = ppos.y + offset.y + 1.5,
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z = ppos.z + offset.z}
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local node_level = minetest.get_node_level(player_eye_pos)
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if node_level == 8 or node_level == 7 then
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return true
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end
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return false
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end
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-- trying to locate position for particles by player look direction for performance reason.
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-- it is costly to generate many particles around player so goal is focus mainly on front view.
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weather.get_random_pos_by_player_look_dir = function(player)
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local look_dir = player:get_look_dir()
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local player_pos = player:getpos()
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local random_pos_x = 0
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local random_pos_y = 0
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local random_pos_z = 0
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if look_dir.x > 0 then
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if look_dir.z > 0 then
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random_pos_x = math.random() + math.random(player_pos.x - 2.5, player_pos.x + 5)
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random_pos_z = math.random() + math.random(player_pos.z - 2.5, player_pos.z + 5)
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else
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random_pos_x = math.random() + math.random(player_pos.x - 2.5, player_pos.x + 5)
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random_pos_z = math.random() + math.random(player_pos.z - 5, player_pos.z + 2.5)
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end
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else
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if look_dir.z > 0 then
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random_pos_x = math.random() + math.random(player_pos.x - 5, player_pos.x + 2.5)
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random_pos_z = math.random() + math.random(player_pos.z - 2.5, player_pos.z + 5)
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else
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random_pos_x = math.random() + math.random(player_pos.x - 5, player_pos.x + 2.5)
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random_pos_z = math.random() + math.random(player_pos.z - 5, player_pos.z + 2.5)
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end
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end
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random_pos_y = math.random() + math.random(player_pos.y + 1, player_pos.y + 3)
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return random_pos_x, random_pos_y, random_pos_z
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end
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minetest.register_globalstep(function(dtime)
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if weather.auto_mode == false then
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return 0
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end
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-- recalculate weather only when there aren't currently any
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if (weather.state ~= "none") then
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if (weather.end_time ~= nil and weather.end_time <= os.time()) then
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weather.reg_weathers[weather.state].clear()
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weather.state = "none"
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end
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elseif (weather.next_check <= os.time()) then
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for weather_name, weather_meta in pairs(weather.reg_weathers) do
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weather.set_random_weather(weather_name, weather_meta)
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end
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-- fallback next_check set, weather 'none' will be.
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weather.next_check = os.time() + weather.check_interval
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end
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end)
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-- sets random weather (which could be 'regular' (no weather)).
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weather.set_random_weather = function(weather_name, weather_meta)
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if weather.next_check > os.time() then return 0 end
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if (weather_meta ~= nil and weather_meta.chance ~= nil) then
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local random_roll = math.random(0,100)
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if (random_roll <= weather_meta.chance) then
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weather.state = weather_name
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weather.end_time = weather.get_rand_end_time(weather_meta.min_duration, weather_meta.max_duration)
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weather.next_check = os.time() + weather.check_interval
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end
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end
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end
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minetest.register_privilege("weather_manager", {
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description = "Gives ability to control weather",
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give_to_singleplayer = false
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})
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-- Weather command definition. Set
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minetest.register_chatcommand("weather", {
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params = "clear | rain | snow | thunder",
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description = "Changes the weather to the specified parameter.",
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privs = {weather_manager = true},
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func = function(name, param)
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if (param == "") then
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minetest.chat_send_player(name, "Error: No weather specified.")
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return
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end
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local success = false
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if (param == "clear") then
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if (weather.state ~= nil and weather.reg_weathers[weather.state] ~= nil) then
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weather.reg_weathers[weather.state].clear()
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end
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weather.state = "none"
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success = true
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return
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end
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if (weather.reg_weathers ~= nil and weather.reg_weathers[param] ~= nil) then
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if (weather.state ~= nil and weather.state ~= "none" and weather.reg_weathers[weather.state] ~= nil) then
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weather.reg_weathers[weather.state].clear()
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end
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weather.state = param
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return
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else
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minetest.chat_send_player(name, "Error: Invalid weather specified. Use “clear”, “rain”, “snow” or “thunder”.")
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end
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end
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})
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-- Configuration setting which allows user to disable ABM for weathers (if they use it).
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-- Weather mods expected to be use this flag before registering ABM.
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local weather_allow_abm = minetest.setting_getbool("weather_allow_abm")
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if weather_allow_abm ~= nil and weather_allow_abm == false then
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weather.allow_abm = false
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end
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-- Overrides nodes 'sunlight_propagates' attribute for efficient indoor check (e.g. for glass roof).
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-- Controlled from minetest.conf setting and by default it is disabled.
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-- To enable set weather_allow_override_nodes to true.
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-- Only new nodes will be effected (glass roof needs to be rebuilded).
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if minetest.setting_getbool("weather_allow_override_nodes") then
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if minetest.registered_nodes["default:glass"] then
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minetest.override_item("default:glass", {sunlight_propagates = false})
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end
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if minetest.registered_nodes["default:meselamp"] then
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minetest.override_item("default:meselamp", {sunlight_propagates = false})
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end
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end
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