mirror of
https://github.com/t-affeldt/climate_api.git
synced 2024-11-18 00:18:20 +01:00
72 lines
2.3 KiB
Lua
72 lines
2.3 KiB
Lua
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local mod_player_monoids = minetest.get_modpath("player_monoids") ~= nil
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local mod_playerphysics = minetest.get_modpath("playerphysics") ~= nil
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function weather_mod.add_physics(player, effect, value)
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local id = weather_mod.modname .. ":" .. effect
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if mod_player_monoids then
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player_monoids[effect].add_change(player, value, id)
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elseif mod_playerphysics then
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playerphysics.add_physics_factor(player, effect, id, value)
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else
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local override = {}
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override[effect] = value
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player:set_physics_override(override)
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end
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end
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function weather_mod.remove_physics(player, effect)
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local id = weather_mod.modname .. ":" .. effect
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if mod_player_monoids then
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player_monoids[effect].del_change(player, id)
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elseif mod_playerphysics then
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playerphysics.remove_physics_factor(player, effect, id)
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else
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local override = {}
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override[effect] = 1
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player:set_physics_override(override)
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end
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end
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-- function taken from weather mod
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-- see https://github.com/theFox6/minetest_mod_weather/blob/master/weather/api.lua#L110
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local function raycast(player, origin)
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local hitpos = vector.add(player:get_pos(),vector.new(0,1,0))
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local ray = minetest.raycast(origin,hitpos)
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local o = ray:next()
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if not o then return false end
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if o.type~="object" then return false end -- hit node or something
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if not o.ref:is_player() then return false end -- hit different object
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if o.ref:get_player_name() ~= player:get_player_name() then
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return false --hit other player
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end
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o = ray:next()
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if o then
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minetest.log("warning","[ultimate_weather] raycast hit more after hitting the player\n"..
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dump2(o,"o"))
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end
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return true
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end
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local function check_light(player)
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return minetest.get_node_light(player:getpos(), 0.5) == 15
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end
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function weather_mod.is_outdoors(player, origin)
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if weather_mod.settings.raycasting then
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return raycast(player, origin)
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else
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return check_light(player)
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end
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end
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function weather_mod.set_headwind(player, wind)
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local movement = vector.normalize(player:get_player_velocity())
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local product = vector.dot(movement, wind)
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-- logistic function, scales between 0 and 2
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-- see https://en.wikipedia.org/wiki/Logistic_function
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local L = 2 -- maximum value
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local k = 0.1 -- growth rate
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local z = 1 -- midpoint
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local factor = L / (1 + math.exp(-k * (product - z)))
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weather_mod.add_physics(player, "speed", factor)
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end
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