player_interaction: Each instance keeps track of its own camera

assets/system/player_interaction.modifier.api.wren

@@ -79,6 +79,8 @@ class Fields {
   static event_name : String { "event_name" }
   static distance : String { "distance" }
   static is_active : String { "is_active" }
+  static camera : String { "camera" }
+  static seen_interaction : String { "seen_interaction" }
 }
 
 import "luxe: world/states" for AState, States, Op
@@ -101,6 +103,8 @@ class APIGet {
   event_name(entity: Entity) : String { Modifier.get(entity).event_name }
   distance(entity: Entity) : Num { Modifier.get(entity).distance }
   is_active(entity: Entity) : Bool { Modifier.get(entity).is_active }
+  camera(entity: Entity) : Num { Modifier.get(entity).camera }
+  seen_interaction(entity: Entity) : Num { Modifier.get(entity).seen_interaction }
 }
 
 class APISet {
@@ -108,6 +112,8 @@ class APISet {
   event_name(entity: Entity, value: String) { Modifier.get(entity).event_name = value }
   distance(entity: Entity, value: Num) { Modifier.get(entity).distance = value }
   is_active(entity: Entity, value: Bool) { Modifier.get(entity).is_active = value }
+  camera(entity: Entity, value: Num) { Modifier.get(entity).camera = value }
+  seen_interaction(entity: Entity, value: Num) { Modifier.get(entity).seen_interaction = value }
 }
 
 var APIGetter = APIGet.new()