Add objective update notice

scripts/core/battle_state.gd

@@ -8,6 +8,7 @@ signal log_added(message: String)
 signal dialogue_requested(lines: Array)
 signal combat_feedback_requested(unit_id: String, text: String, kind: String)
 signal unit_motion_requested(unit_id: String, from_cell: Vector2i, to_cell: Vector2i)
+signal objective_updated(victory: String, defeat: String)
 
 const TEAM_PLAYER := "player"
 const TEAM_ENEMY := "enemy"
@@ -3682,11 +3683,25 @@ func _grant_event_item(action: Dictionary, trigger_unit: Dictionary = {}) -> boo
 
 
 func _apply_objective_event(action: Dictionary) -> void:
+	var updated := false
+	var updated_victory := ""
+	var updated_defeat := ""
 	if action.has("victory"):
 		objectives["victory"] = str(action["victory"])
+		updated_victory = str(objectives.get("victory", ""))
+		updated = true
 	if action.has("defeat"):
 		objectives["defeat"] = str(action["defeat"])
-	_emit_log("Objective updated.")
+		updated_defeat = str(objectives.get("defeat", ""))
+		updated = true
+	if not updated:
+		return
+	if action.has("victory") and not updated_victory.is_empty():
+		_emit_log("Objective updated: %s" % updated_victory)
+	if action.has("defeat") and not updated_defeat.is_empty():
+		_emit_log("Defeat condition updated: %s" % updated_defeat)
+	objective_updated.emit(updated_victory, updated_defeat)
+	_notify_changed()
 
 
 func _dialogue_lines_from_action(action: Dictionary) -> Array: