Yrimir | Terraria 1.2 - Actuator, for traps or hiding your base @Yrimir | Uploaded September 2013 | Updated October 2024, 4 days ago.
twitter.com/Yrimir

Actuators are bought from the mechanic and changes the way we build our worlds. Before we only had inactive/active stone blocks, but now we can give that ability to any block. This opens up new perspectives to the games, and I'm sure map makers will love this.

Credits:
Nickolay Smirnov - "Stella Splendens"
https://Terrariaonline.com