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gamemodes/darkrp/plugins/phone/libs/sv_endpoints.lua

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+--[[
+| This file was obtained through the combined efforts
+| of Madbluntz & Plymouth Antiquarian Society.
+|
+| Credits: lifestorm, Gregory Wayne Rossel JR.,
+| 	Maloy, DrPepper10 @ RIP, Atle!
+|
+| Visit for more: https://plymouth.thetwilightzone.ru/
+--]]
+
+ix.phone = ix.phone or {}
+ix.phone.switch = ix.phone.switch or {}
+
+-- a flat list of all the entities. each entity has an associated 'listeners' table which contains all of the players actively connected to that entity
+ix.phone.switch.endpoints = ix.phone.switch.endpoints or {}
+
+function ix.phone.switch.endpoints:exists(id)
+    return self[id] != nil
+end
+
+function ix.phone.switch.endpoints:entExists(entIdx)
+    for id, ent in ipairs(self) do
+        if (entIdx == ent:EntIndex()) then
+            return id
+        end
+    end
+    return nil
+end
+
+function ix.phone.switch.endpoints:Register(ent)
+    -- assigns an ID. if the ent already exists then it will return the existing id
+    -- we need to have our own ID here rather than the index because the entity index might change but
+    -- in that case the id shouldn't
+
+    local entExists = self:entExists(ent:EntIndex())
+    if (entExists != nil) then
+        return nil
+    end
+
+    local newID = math.random(1000, 9999)
+    if (self:exists(newID)) then
+        return nil
+    end
+
+    self[newID] = ent
+    return newID
+end
+
+function ix.phone.switch.endpoints:DeRegister(id)
+    self[id] = nil
+end
+
+function ix.phone.switch.endpoints:GetEndpoint(id)
+    -- returns the associated entity table
+    if (self:exists(id)) then
+        return self[id]
+    end
+end
+
+function ix.phone.switch.endpoints:AddListener(id, client)
+    if (!istable(self[id].listeners)) then
+        self[id].listeners = {}
+    end
+
+    for _, listener in ipairs(self[id].listeners) do
+        if (listener == client) then
+            return
+        end
+    end
+
+    self[id].listeners[table.Count(self[id].listeners) + 1] = client
+end
+
+function ix.phone.switch.endpoints:RmListener(id, client)
+    if (!istable(self[id].listeners)) then
+        return
+    end
+
+    for k, listener in ipairs(self[id].listeners) do
+        if (listener == client) then
+            self[id].listeners[k] = nil
+        end
+    end
+end
+
+function ix.phone.switch.endpoints:GetListeners(id)
+    return self[id].listeners
+end
+
+function ix.phone.switch.endpoints:RingEndpoint(id, callback)
+    -- rings and endpoint and, if the phone is picked up, it will call callback as true. otherwise false
+    -- if the destination is unavailable or busy then it will return nil
+    local ent = self:GetEndpoint(id)
+
+    if (ent.inUse or ent.isRinging) then
+        return nil
+    end
+
+    ent:EnterRing(callback)
+end
+
+function ix.phone.switch.endpoints:GetPlayersInRadiusFromPos(pos, radius)
+    local entsInside = ents.FindInSphere(pos, radius)
+    local res = {}
+
+    for _, _ent in ipairs(entsInside) do
+        if (_ent:IsPlayer() and _ent.GetCharacter and _ent:GetCharacter()) then
+            res[_ent:SteamID64()] = _ent
+        end
+    end
+
+    return res
+end
+
+-- returns a list of players within X radius of the endpoint
+function ix.phone.switch.endpoints:GetPlayersInRadius(id, radius)
+    local ent = self:GetEndpoint(id)
+    if (!ent) then
+        return
+    end
+
+    return self:GetPlayersInRadiusFromPos(ent:GetPos(), radius)
+end