How to use Events

Summary

Events are used to run your code when something specific occurs.
An event system is also called the observer pattern.

A scripting function can be bound to an event name.
When an event name is invoked, all scripting functions that are bound to that event name are called.

Example

Lua, Server-Side:

addEventHandler('onPlayerJoined', function(event,client)
    message(client.player.name .. ' has joined the server!', COLOUR_GREEN)
end)