mirror of
https://github.com/appgurueu/modlib.git
synced 2024-09-12 00:06:49 +02:00
240 lines
6.0 KiB
Lua
240 lines
6.0 KiB
Lua
-- Localize globals
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local assert, minetest, modlib, next, pairs, string, setmetatable, table, type, unpack
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= assert, minetest, modlib, next, pairs, string, setmetatable, table, type, unpack
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-- Set environment
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local _ENV = ...
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setfenv(1, _ENV)
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max_wear = 2 ^ 16 - 1
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function override(function_name, function_builder)
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local func = minetest[function_name]
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minetest["original_" .. function_name] = func
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minetest[function_name] = function_builder(func)
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end
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local jobs = modlib.heap.new(function(a, b)
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return a.time < b.time
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end)
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local job_metatable = {
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__index = {
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cancel = function(self)
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self.cancelled = true
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end
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}
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}
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local time = 0
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function after(seconds, func, ...)
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local job = setmetatable({
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time = time + seconds,
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func = func,
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...
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}, job_metatable)
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jobs:push(job)
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return job
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end
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minetest.register_globalstep(function(dtime)
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time = time + dtime
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local job = jobs[1]
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while job and job.time <= time do
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if not job.cancelled then
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job.func(unpack(job))
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end
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jobs:pop()
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job = jobs[1]
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end
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end)
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function register_globalstep(interval, callback)
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if type(callback) ~= "function" then
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return
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end
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local time = 0
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minetest.register_globalstep(function(dtime)
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time = time + dtime
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if time >= interval then
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callback(time)
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-- TODO ensure this breaks nothing
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time = time % interval
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end
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end)
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end
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form_listeners = {}
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function register_form_listener(formname, func)
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local current_listeners = form_listeners[formname] or {}
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table.insert(current_listeners, func)
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form_listeners[formname] = current_listeners
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end
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local icall = modlib.table.icall
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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icall(form_listeners[formname] or {})
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end)
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function texture_modifier_inventorycube(face_1, face_2, face_3)
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return "[inventorycube{" .. string.gsub(face_1, "%^", "&")
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.. "{" .. string.gsub(face_2, "%^", "&")
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.. "{" .. string.gsub(face_3, "%^", "&")
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end
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function get_node_inventory_image(nodename)
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local n = minetest.registered_nodes[nodename]
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if not n then
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return
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end
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local tiles = {}
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for l, tile in pairs(n.tiles or {}) do
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tiles[l] = (type(tile) == "string" and tile) or tile.name
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end
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local chosen_tiles = { tiles[1], tiles[3], tiles[5] }
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if #chosen_tiles == 0 then
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return false
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end
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if not chosen_tiles[2] then
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chosen_tiles[2] = chosen_tiles[1]
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end
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if not chosen_tiles[3] then
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chosen_tiles[3] = chosen_tiles[2]
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end
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local img = minetest.registered_items[nodename].inventory_image
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if string.len(img) == 0 then
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img = nil
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end
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return img or texture_modifier_inventorycube(chosen_tiles[1], chosen_tiles[2], chosen_tiles[3])
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end
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function check_player_privs(playername, privtable)
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local privs=minetest.get_player_privs(playername)
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local missing_privs={}
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local to_lose_privs={}
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for priv, expected_value in pairs(privtable) do
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local actual_value=privs[priv]
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if expected_value then
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if not actual_value then
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table.insert(missing_privs, priv)
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end
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else
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if actual_value then
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table.insert(to_lose_privs, priv)
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end
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end
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end
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return missing_privs, to_lose_privs
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end
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minetest.register_globalstep(function(dtime)
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for k, v in pairs(delta_times) do
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local v=dtime+v
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if v > delays[k] then
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callbacks[k](v)
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v=0
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end
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delta_times[k]=v
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end
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end)
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form_listeners = {}
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function register_form_listener(formname, func)
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local current_listeners = form_listeners[formname] or {}
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table.insert(current_listeners, func)
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form_listeners[formname] = current_listeners
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end
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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local handlers = form_listeners[formname]
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if handlers then
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for _, handler in pairs(handlers) do
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handler(player, fields)
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end
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end
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end)
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--+ Improved base64 decode removing valid padding
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function decode_base64(base64)
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local len = base64:len()
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local padding_char = base64:sub(len, len) == "="
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if padding_char then
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if len % 4 ~= 0 then
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return
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end
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if base64:sub(len-1, len-1) == "=" then
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base64 = base64:sub(1, len-2)
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else
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base64 = base64:sub(1, len-1)
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end
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end
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return minetest.decode_base64(base64)
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end
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local object_refs = minetest.object_refs
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--+ Objects inside radius iterator. Uses a linear search.
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function objects_inside_radius(pos, radius)
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radius = radius^2
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local id, object, object_pos
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return function()
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repeat
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id, object = next(object_refs, id)
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object_pos = object:get_pos()
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until (not object) or ((pos.x-object_pos.x)^2 + (pos.y-object_pos.y)^2 + (pos.z-object_pos.z)^2) <= radius
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return object
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end
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end
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--+ Objects inside area iterator. Uses a linear search.
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function objects_inside_area(min, max)
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local id, object, object_pos
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return function()
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repeat
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id, object = next(object_refs, id)
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object_pos = object:get_pos()
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until (not object) or (
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(min.x <= object_pos.x and min.y <= object_pos.y and min.z <= object_pos.z)
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and
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(max.y >= object_pos.x and max.y >= object_pos.y and max.z >= object_pos.z)
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)
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return object
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end
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end
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--: node_or_groupname "modname:nodename", "group:groupname[,groupname]"
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--> function(nodename) -> whether node matches
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function nodename_matcher(node_or_groupname)
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if modlib.text.starts_with(node_or_groupname, "group:") then
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local groups = modlib.text.split(node_or_groupname:sub(("group:"):len() + 1), ",")
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return function(nodename)
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for _, groupname in pairs(groups) do
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if minetest.get_item_group(nodename, groupname) == 0 then
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return false
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end
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end
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return true
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end
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else
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return function(nodename)
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return nodename == node_or_groupname
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end
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end
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end
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do
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local default_create, default_free = function() return {} end, modlib.func.no_op
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local metatable = {__index = function(self, player)
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if type(player) == "userdata" then
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return self[player:get_player_name()]
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end
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end}
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function playerdata(create, free)
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create = create or default_create
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free = free or default_free
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local data = {}
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minetest.register_on_joinplayer(function(player)
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data[player:get_player_name()] = create(player)
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end)
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minetest.register_on_leaveplayer(function(player)
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data[player:get_player_name()] = free(player)
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end)
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setmetatable(data, metatable)
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return data
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end
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end
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