If some dialogue needs to be never-missable, that's the mapper's responsibility - but now they won't get randomly interleaved if multiple are activated just by regular free driving, which was the worst kind of default
A first pass in attempts to fix crashes when ACS causes map changes.
Frustratingly still got a crash, but I think this is definitely the right foundation to work with.
- POSITION: Runs when POSITION period ends. Has no activator.
- OVERTIME: Runs when the time limit runs out. Has no activator.
- EMERALD: Runs when the Special Stage UFO's Chaos Emerald is grabbed. The activator object is set to the player that grabbed it.
