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https://github.com/minetest/minetest.git
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139 lines
3.2 KiB
Lua
139 lines
3.2 KiB
Lua
-- Minetest: builtin/misc.lua
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--
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-- Misc. API functions
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--
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core.timers_to_add = {}
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core.timers = {}
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core.register_globalstep(function(dtime)
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for _, timer in ipairs(core.timers_to_add) do
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table.insert(core.timers, timer)
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end
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core.timers_to_add = {}
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local index = 1
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while index <= #core.timers do
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local timer = core.timers[index]
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timer.time = timer.time - dtime
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if timer.time <= 0 then
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timer.func(unpack(timer.args or {}))
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table.remove(core.timers,index)
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else
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index = index + 1
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end
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end
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end)
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function core.after(time, func, ...)
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assert(tonumber(time) and type(func) == "function",
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"Invalid core.after invocation")
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table.insert(core.timers_to_add, {time=time, func=func, args={...}})
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end
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function core.check_player_privs(name, privs)
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local player_privs = core.get_player_privs(name)
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local missing_privileges = {}
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for priv, val in pairs(privs) do
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if val then
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if not player_privs[priv] then
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table.insert(missing_privileges, priv)
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end
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end
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end
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if #missing_privileges > 0 then
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return false, missing_privileges
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end
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return true, ""
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end
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local player_list = {}
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core.register_on_joinplayer(function(player)
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player_list[player:get_player_name()] = player
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end)
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core.register_on_leaveplayer(function(player)
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player_list[player:get_player_name()] = nil
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end)
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function core.get_connected_players()
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local temp_table = {}
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for index, value in pairs(player_list) do
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if value:is_player_connected() then
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table.insert(temp_table, value)
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end
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end
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return temp_table
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end
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function core.hash_node_position(pos)
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return (pos.z+32768)*65536*65536 + (pos.y+32768)*65536 + pos.x+32768
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end
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function core.get_position_from_hash(hash)
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local pos = {}
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pos.x = (hash%65536) - 32768
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hash = math.floor(hash/65536)
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pos.y = (hash%65536) - 32768
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hash = math.floor(hash/65536)
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pos.z = (hash%65536) - 32768
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return pos
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end
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function core.get_item_group(name, group)
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if not core.registered_items[name] or not
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core.registered_items[name].groups[group] then
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return 0
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end
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return core.registered_items[name].groups[group]
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end
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function core.get_node_group(name, group)
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core.log("deprecated", "Deprecated usage of get_node_group, use get_item_group instead")
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return core.get_item_group(name, group)
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end
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function core.string_to_pos(value)
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local p = {}
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p.x, p.y, p.z = string.match(value, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
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if p.x and p.y and p.z then
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p.x = tonumber(p.x)
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p.y = tonumber(p.y)
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p.z = tonumber(p.z)
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return p
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end
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local p = {}
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p.x, p.y, p.z = string.match(value, "^%( *([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+) *%)$")
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if p.x and p.y and p.z then
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p.x = tonumber(p.x)
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p.y = tonumber(p.y)
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p.z = tonumber(p.z)
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return p
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end
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return nil
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end
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assert(core.string_to_pos("10.0, 5, -2").x == 10)
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assert(core.string_to_pos("( 10.0, 5, -2)").z == -2)
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assert(core.string_to_pos("asd, 5, -2)") == nil)
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function core.setting_get_pos(name)
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local value = core.setting_get(name)
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if not value then
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return nil
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end
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return core.string_to_pos(value)
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end
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-- To be overriden by protection mods
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function core.is_protected(pos, name)
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return false
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end
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function core.record_protection_violation(pos, name)
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for _, func in pairs(core.registered_on_protection_violation) do
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func(pos, name)
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end
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end
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