BossEvent

Controls the boss health bar: bind it to an entity, set its percentage, color, overlay or remove it. Also used for the raid bar.

boss-event.bin

struct BossEvent {
  ActorUniqueID                                BossId;
  BossEventUpdateType                          EventType;
  string                                       Name;
  string                                       FilteredName;
  float32 (LE)                                 HealthPercent;
  BossBarColor                                 Color;
  BossBarOverlay                               Overlay;
}

Structure

Field	Type	Description
Boss Id	ActorUniqueID
Event Type	BossEventUpdateType
Name	string
Filtered Name	string
Health Percent	float32 (LE)
Color	BossBarColor
Overlay	BossBarOverlay

Notes

Both sides can send it — the client uses it for the wither/dragon bars.