introduced CannonFiring as composition.. created class in CannonTip and used GetComponentInChildren within Rotating cannon to pick up the 'child' script. CannonFiring is PART OF RotatingCannon

Changed bullet to abstract as an abstract factory design pattern example

Singleton Pattern

Scriptable Objects (Enemies example)

CoRoutines lecture: spawning enemies every second

2 object pools using same class

multi-object pool

object pooling

object pooling notes

Added walls

Object pooling task

lecture tasks doc

Update Bullet.cs

Abstract classes, statics, getters/setters using GameData

Different bullet behaviors using inheritance and destroy OnBecameInvisible