87 lines
2.7 KiB
Lua
87 lines
2.7 KiB
Lua
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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local mod_pova = minetest.get_modpath("pova") ~= nil
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local physics = {}
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-- use player monoids if available
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if mod_player_monoids then
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function physics.add(id, player, effect, value)
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player_monoids[effect]:add_change(player, value, id)
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end
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function physics.remove(id, player, effect)
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player_monoids[effect]:del_change(player, id)
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end
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-- fallback to playerphysics if available
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elseif mod_playerphysics then
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function physics.add(id, player, effect, value)
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playerphysics.add_physics_factor(player, effect, id, value)
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end
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function physics.remove(id, player, effect)
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playerphysics.remove_physics_factor(player, effect, id)
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end
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-- fallback to pova if available
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-- pova uses additive effect modifiers
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-- this tries to simulate multiplication
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-- by including the default value in modifier calculation
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elseif mod_pova then
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function physics.add(id, player, effect, value)
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local playername = player:get_player_name()
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local defaults = pova.get_override(playername, "default")
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local default
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if defaults == nil or defaults[effect] == nil then default = 1
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else default = defaults[effect] end
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local override = {}
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override[effect] = (value * default) - default
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pova.add_override(playername, id, override)
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pova.do_override(player)
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end
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function physics.remove(id, player, effect)
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local playername = player:get_player_name()
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pova.del_override(playername, id)
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pova.do_override(player)
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end
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-- fallback to vanilla override as last resort
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else
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local function apply_physics(player)
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local playername = player:get_player_name()
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local override = { speed = 1, jump = 1, gravity = 1 }
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for effect, modifiers in pairs(physics[playername]) do
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override[effect] = 1
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for _, modifier in pairs(modifiers) do
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override[effect] = override[effect] * modifier
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end
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end
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player:set_physics_override(override)
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end
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function physics.add(id, player, effect, value)
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local playername = player:get_player_name()
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if physics[playername] == nil then physics[playername] = {} end
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if physics[playername][effect] == nil then physics[playername][effect] = {} end
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physics[playername][effect][id] = value
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apply_physics(player)
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end
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function physics.remove(id, player, effect)
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local playername = player:get_player_name()
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if physics[playername] == nil then return end
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if physics[playername][effect] == nil then return end
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if physics[playername][effect][id] == nil then return end
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physics[playername][effect][id] = nil
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apply_physics(player)
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end
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minetest.register_on_leaveplayer(function(player)
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local playername = player:get_player_name()
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physics[playername] = nil
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end)
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end
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return physics |