Events Guide

All you need to know about Events.

Classes Events

In nanos world, all actions performed by Players or Entities can be obtained through events.

The most basic event to bring an example is the Spawn. Every time an entity is spawned, the event Spawn will be triggered.

Subscribing for Class Events

Registering for events is very easy and straightforward using the method Subscribe, let's say we want to know where a Player has joined the server:

Player.Subscribe("Spawn", function(player)
    Console.Log(player:GetName() .. " has joined!")
end)

info

Most events are triggered on both Client and Server sides, only a few rare exceptions which will be elicited by the Availability.

Unsubscribing of Class Events

Currently there is two ways of unsubscribing from events:

info

Note: Unsubscribing events will always only unregister from events which were registered in the Package you are.

Unsubscribing from all Events

-- This will unregister from all "Spawn" events of Player registered in this Package
Player.Unsubscribe("Spawn")

Unsubscribing from a specific Event Callback

-- Declares the Callback beforehand
function OnSpawnPlayer(player)
    Console.Log(player:GetName() .. " has joined!")
end

-- Subscribes the event, passing the Callback
Player.Subscribe("Spawn", OnSpawnPlayer)

-- Subscribes for the same event, twice
Player.Subscribe("Spawn", function(player)
    Console.Log(player:GetName() .. " has joined again!")
end)

-- Unsubscribes only from the first Callback
Player.Unsubscribe("Spawn", OnSpawnPlayer)

-- This will keep triggering "player has joined again" but will not trigger
-- "player has joined" anymore

Entity Events

In nanos world it is possible to register for events on specific Entities as well, this way the callback will only be triggered if that specific entity is the event reason.

Subscribing for Entity Events

-- Spawns a Character
local my_character = Character()

my_character:Subscribe("EnterVehicle", function(self, vehicle)
    -- my_character entered vehicle
end)

tip

Note that once the entity is destroyed, all events registered for it will be unregistered automatically!

Unsubscribing of Entity Events

Currently there is two ways of unsubscribing from events:

info

Note: Unsubscribing events will always only unregister from events which were registered in the Package you are.

Unsubscribing from all Entity Events

-- This will unregister from all "EnterVehicle" events of this specific Character
-- registered in this Package
my_character:Unsubscribe("EnterVehicle")

Unsubscribing from a specific Entity Event Callback

-- Declares the Callback beforehand
function OnCharacterEnteredVehicle(character, vehicle)
    -- Entered vehicle!
end

-- Subscribes the event, passing the Callback
my_character:Subscribe("EnterVehicle", OnCharacterEnteredVehicle)

-- Subscribes for the same event, twice
my_character:Subscribe("EnterVehicle", function(character, vehicle)
    -- Entered vehicle again!
end)

-- Unsubscribes only from the first Callback
my_character:Unsubscribe("EnterVehicle", OnCharacterEnteredVehicle)

Custom Events

In nanos world, it is possible to define and call Custom Events. Please refer to Events Static Class for the technical documentation.

Custom events are user-created events which you can subscribe or call to all other Packages.