The SystemManager is responsible for keeping track of all systems in a scene. Systems are scene specific
List of systems, to add a new system call SystemManager.addSystem
Adds a system to the manager, it will now be updated every frame
Get a system registered in the manager by type
Initialize all systems in the manager
Systems added after initialize() will be initialized on add
Removes a system from the manager, it will no longer be updated
Updates all systems
whether this is an update or draw system
context reference
time in milliseconds
The SystemManager is responsible for keeping track of all systems in a scene. Systems are scene specific