Initialisation Order

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This page is currently a WIP (Work in Progress) and not in a finished state

Introduction

Whenever a mission is launched (or joined in multiplayer) certain tasks are performed to ensure the mission's various components are initialized correctly and that everyone is synced in multiplayer games (particularly JIP players). Initialization order refers to the order in which those tasks are executed and it's important to take into account when setting up the start of a mission.

Event Scripts are a key part of a mission's initialization order and will be utilized often when working with SQF.

Arma 3

Take note that the order of initialization is different in single player and multiplayer environments. If an entry is unmarked then it applies to both.

Key

Item	Meaning
	Single Player Only
	Multiplayer Only

In multiplayer the following is relevant to every machine including the server and headless clients. If the server is non-dedicated then it should be considered both a server and client.

Order of Initialization

Task	Applies To	JIP	Related To	Exec Environment
Functions with recompile attribute are recompiled	All	✔	Functions Library (Arma 3)
Functions with preInit attribute are called	All		Functions Library (Arma 3)	Unscheduled
Object Init Event Handlers are called	All			Unscheduled
Object initialization fields are called	All			Unscheduled
init.sqs is executed	Single Player		Event Scripts
init.sqf is executed	Single Player		Event Scripts
Persistent functions are called	Client	✔	BIS_fnc_MP
Modules are initialized	All
initServer.sqf is executed	Server		Event Scripts	Scheduled
initPlayerLocal.sqf is executed	Client	✔	Event Scripts	Scheduled
initPlayerServer.sqf is executed on the server	Client	✔	Event Scripts	Scheduled
Functions with postInit attribute are called	All		Functions Library (Arma 3)	Scheduled
"BIS_fnc_init" variable is set to true	All	✔
init.sqs is executed	All	✔	Event Scripts	Scheduled
init.sqf is executed	All	✔	Event Scripts	Scheduled