I did a quick exercise in BP communication off a tutorial i found you YouTube... In this example, the Powerup BP communicates with the PL BP and temporarily changes PL speed. It works, but I think a better way is to to have all available powerup-effects (such as speed/jumpHeight/Health/etc.) in the PL BP and have the power-ups send events to the PL BP instead of having the logic in the powerup BPs themselves.
I'll set up a system like that next!
I'll set up a system like that next!