We’ve created an area for the final boss that has a force field that will drop once all the creature spawners have been eliminated (9 on each team).
The force field is build from an dome mesh, and a Niagara particle system that uses the mesh as the spawn location for the particles.
Static Mesh
Niagara System
The area becomes accessible only when a score counter registers that the phase 2 creature spawners are eliminated.
The material has its attributes exposed in the sequencer so we can animate them as well.
