Initial audio subystem for music testing and first song to loop over

Source/ProjectEleri/GameEventSystem/GameEventDataAsset.h

@@ -13,6 +13,7 @@
 
 
 class UTexture2D;
+class USoundBase;
 
 UENUM(BlueprintType)
 enum class EEventStage : uint8
@@ -78,6 +79,12 @@ public:
     UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Data")
     TArray<FTagValue> TagValueArray;
 
+    /** Soundtracks this event can put on. One is drawn at random and crossfaded in over whatever is
+     *  playing already, and it holds the music until the override is cleared. An event with none
+     *  leaves the music alone, which is what most of them will do. */
+    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Audio")
+    TSoftObjectPtr<USoundBase> MusicCue;
+
     UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Newspaper event")
     bool bIsNewspaperEvent;
     UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Newspaper event", meta = (EditCondition = "bIsNewspaperEvent", EditConditionHides))