-- Misc. API functions
--
-local jobs = {}
-local time = 0.0
-local last = core.get_us_time() / 1000000
-
-core.register_globalstep(function(dtime)
- local new = core.get_us_time() / 1000000
- if new > last then
- time = time + (new - last)
- else
- -- Overflow, we may lose a little bit of time here but
- -- only 1 tick max, potentially running timers slightly
- -- too early.
- time = time + new
- end
- last = new
-
- if #jobs < 1 then
- return
- end
-
- -- Iterate backwards so that we miss any new timers added by
- -- a timer callback, and so that we don't skip the next timer
- -- in the list if we remove one.
- for i = #jobs, 1, -1 do
- local job = jobs[i]
- if time >= job.expire then
- core.set_last_run_mod(job.mod_origin)
- job.func(unpack(job.arg))
- table.remove(jobs, i)
- end
- end
-end)
-
-function core.after(after, func, ...)
- assert(tonumber(time) and type(func) == "function",
- "Invalid core.after invocation")
- jobs[#jobs + 1] = {
- func = func,
- expire = time + after,
- arg = {...},
- mod_origin = core.get_last_run_mod()
- }
-end
-
-function core.check_player_privs(player_or_name, ...)
- local name = player_or_name
- -- Check if we have been provided with a Player object.
- if type(name) ~= "string" then
+function core.check_player_privs(name, ...)
+ if core.is_player(name) then
name = name:get_player_name()
+ elseif type(name) ~= "string" then
+ error("core.check_player_privs expects a player or playername as " ..
+ "argument.", 2)
end
-
+
local requested_privs = {...}
local player_privs = core.get_player_privs(name)
local missing_privileges = {}
-
+
if type(requested_privs[1]) == "table" then
-- We were provided with a table like { privA = true, privB = true }.
for priv, value in pairs(requested_privs[1]) do
end
end
end
-
+
if #missing_privileges > 0 then
return false, missing_privileges
end
-
+
return true, ""
end
-local player_list = {}
+
+function core.send_join_message(player_name)
+ if not core.is_singleplayer() then
+ core.chat_send_all("*** " .. player_name .. " joined the game.")
+ end
+end
+
+
+function core.send_leave_message(player_name, timed_out)
+ local announcement = "*** " .. player_name .. " left the game."
+ if timed_out then
+ announcement = announcement .. " (timed out)"
+ end
+ core.chat_send_all(announcement)
+end
+
core.register_on_joinplayer(function(player)
- player_list[player:get_player_name()] = player
+ local player_name = player:get_player_name()
+ if not core.is_singleplayer() then
+ local status = core.get_server_status(player_name, true)
+ if status and status ~= "" then
+ core.chat_send_player(player_name, status)
+ end
+ end
+ core.send_join_message(player_name)
end)
-core.register_on_leaveplayer(function(player)
- player_list[player:get_player_name()] = nil
+
+core.register_on_leaveplayer(function(player, timed_out)
+ local player_name = player:get_player_name()
+ core.send_leave_message(player_name, timed_out)
end)
-function core.get_connected_players()
- local temp_table = {}
- for index, value in pairs(player_list) do
- if value:is_player_connected() then
- temp_table[#temp_table + 1] = value
- end
- end
- return temp_table
+
+function core.is_player(player)
+ -- a table being a player is also supported because it quacks sufficiently
+ -- like a player if it has the is_player function
+ local t = type(player)
+ return (t == "userdata" or t == "table") and
+ type(player.is_player) == "function" and player:is_player()
+end
+
+
+function core.player_exists(name)
+ return core.get_auth_handler().get_auth(name) ~= nil
end
+
-- Returns two position vectors representing a box of `radius` in each
-- direction centered around the player corresponding to `player_name`
+
function core.get_player_radius_area(player_name, radius)
local player = core.get_player_by_name(player_name)
if player == nil then
return nil
end
- local p1 = player:getpos()
+ local p1 = player:get_pos()
local p2 = p1
if radius then
return p1, p2
end
+
function core.hash_node_position(pos)
- return (pos.z+32768)*65536*65536 + (pos.y+32768)*65536 + pos.x+32768
+ return (pos.z + 32768) * 65536 * 65536
+ + (pos.y + 32768) * 65536
+ + pos.x + 32768
end
+
function core.get_position_from_hash(hash)
local pos = {}
- pos.x = (hash%65536) - 32768
- hash = math.floor(hash/65536)
- pos.y = (hash%65536) - 32768
- hash = math.floor(hash/65536)
- pos.z = (hash%65536) - 32768
+ pos.x = (hash % 65536) - 32768
+ hash = math.floor(hash / 65536)
+ pos.y = (hash % 65536) - 32768
+ hash = math.floor(hash / 65536)
+ pos.z = (hash % 65536) - 32768
return pos
end
+
function core.get_item_group(name, group)
if not core.registered_items[name] or not
core.registered_items[name].groups[group] then
return core.registered_items[name].groups[group]
end
+
function core.get_node_group(name, group)
core.log("deprecated", "Deprecated usage of get_node_group, use get_item_group instead")
return core.get_item_group(name, group)
end
+
function core.setting_get_pos(name)
- local value = core.setting_get(name)
+ local value = core.settings:get(name)
if not value then
return nil
end
return core.string_to_pos(value)
end
+
-- To be overriden by protection mods
+
function core.is_protected(pos, name)
return false
end
+
function core.record_protection_violation(pos, name)
for _, func in pairs(core.registered_on_protection_violation) do
func(pos, name)
end
end
+
+-- Checks if specified volume intersects a protected volume
+
+function core.is_area_protected(minp, maxp, player_name, interval)
+ -- 'interval' is the largest allowed interval for the 3D lattice of checks.
+
+ -- Compute the optimal float step 'd' for each axis so that all corners and
+ -- borders are checked. 'd' will be smaller or equal to 'interval'.
+ -- Subtracting 1e-4 ensures that the max co-ordinate will be reached by the
+ -- for loop (which might otherwise not be the case due to rounding errors).
+
+ -- Default to 4
+ interval = interval or 4
+ local d = {}
+
+ for _, c in pairs({"x", "y", "z"}) do
+ if minp[c] > maxp[c] then
+ -- Repair positions: 'minp' > 'maxp'
+ local tmp = maxp[c]
+ maxp[c] = minp[c]
+ minp[c] = tmp
+ end
+
+ if maxp[c] > minp[c] then
+ d[c] = (maxp[c] - minp[c]) /
+ math.ceil((maxp[c] - minp[c]) / interval) - 1e-4
+ else
+ d[c] = 1 -- Any value larger than 0 to avoid division by zero
+ end
+ end
+
+ for zf = minp.z, maxp.z, d.z do
+ local z = math.floor(zf + 0.5)
+ for yf = minp.y, maxp.y, d.y do
+ local y = math.floor(yf + 0.5)
+ for xf = minp.x, maxp.x, d.x do
+ local x = math.floor(xf + 0.5)
+ local pos = {x = x, y = y, z = z}
+ if core.is_protected(pos, player_name) then
+ return pos
+ end
+ end
+ end
+ end
+ return false
+end
+
+
local raillike_ids = {}
local raillike_cur_id = 0
function core.raillike_group(name)
return id
end
+
-- HTTP callback interface
+
function core.http_add_fetch(httpenv)
httpenv.fetch = function(req, callback)
local handle = httpenv.fetch_async(req)
return httpenv
end
-function core.get_color_escape_sequence(color)
- --if string.len(color) == 3 then
- -- local r = string.sub(color, 1, 1)
- -- local g = string.sub(color, 2, 2)
- -- local b = string.sub(color, 3, 3)
- -- color = r .. r .. g .. g .. b .. b
- --end
- --assert(#color == 6, "Color must be six characters in length.")
- --return "\v" .. color
- return "\v(color;" .. color .. ")"
+function core.close_formspec(player_name, formname)
+ return core.show_formspec(player_name, formname, "")
end
-function core.colorize(color, message)
- return core.get_color_escape_sequence(color) .. message .. core.get_color_escape_sequence("ffffff")
+
+function core.cancel_shutdown_requests()
+ core.request_shutdown("", false, -1)
end
projects / dragonfireclient.git / blobdiff