Counter and Animation in UE4 Blueprints

Hi guys,

I’m having a lot of trouble trying to work something out, and I would like to ask for some help.

I am trying to create a system where the player must collect 3 items, which will then power up a turret, which will then animate, by rotating and shooting at a blast door.

I need to set it up so that once all 3 items have been collected, a prompt will display to press a button in order to activate the turret.
Then, I’ll need the turret to power up; move and aim at the blast door behind it. The turret will then fire 2 projectiles and destroy the blast door.
I also need to learn how to set it up so that the prompt to interact with the turret will not show until all 3 items have been collected.

Does anyone know how to go about doing this? Or can anyone point me to a decent tutorial covering this?

Thanks very much in advance.

Check out these tutorials for a place to start:

Pickups -
Interaction -

You should be able to find plenty of other tutorials on YouTube and elsewhere for the turret animation and projectile/destruction.