Explain Delegates with a simple game scenario

Ok so basically a variable has data in it whereas a delegate contains methods/functions. You can use them to create complex behaviors for objects. So lets say you have a weapon in your game and want it to have different functions to it. Say an assault rifle.

 public delegate void ShootWeapon();
 ShootWeapon weaponShoot;
 
 pulic enum FireMode
 {
 Single,
 Burst,
 Auto
 }
 
 FireMode currentFireMode = FireMode.Single;

So we have created a delegate and an enum here which contains the types of shooting your gun can do. Once this is done later in our update we can do something like this.

 if(Input.GetKeyDown(KeyCode.Tab))
 { switch(currentFireMode)
 {
 
 case(FireMode.Singe):
 //if your current weapon fire mode is single shot, switch to burst
 currentFireMode = FireMode.Burst;
 weaponShoot = BurstShot;
 break;
 
 case(FireMode.Burst):
 //if your current weapon fire mode is single burst, switch to auto
 currentFireMode = FireMode.Auto;
 weaponShoot = AutoShot;
 break;
 
 case(FireMode.Auto):
 //if your current weapon fire mode is single auto, switch to single
 CurrentFireMode = FireMode.Single;
 weaponShoot = SingleShot;
 break;
 
 }
 }

So basically based on the enum the delegate is altered to run a different function. So you would have functions for SingleShot(), BurstShot(), AutoShot().

Have a look at this unity video too hopefully it will clear some things up for you. Video