Audio

Summary

Now you’re ready to add the finishing touches to your game with engaging audio.

In this tutorial, you’ll:

• Explore the different kinds of audio that can be used in a game
• Add a soundtrack and range of audio effects
• Write a script to control the use of audio in your game
• Once you’ve completed this tutorial, your game will be finished and you’ll be ready to create a build! 

Implementing Non-Diegetic and Diegetic Audio in Unity

Non-Diegetic Audio Setup

1. Create Ambient Audio Source:
• Create an empty GameObject named “Ambient”.
• Set its position to (0, 0, 0).
• Add an Audio Source component by dragging the SFXHouseAmbience Audio Clip from Assets > Audio onto the Inspector.
• Ensure Spatial Blend is set to 2D.
• Enable ‘Play On Awake’ and ‘Loop’.
• Adjust Volume to 0.5.
2. Duplicate for Game Ending Sounds:
• Duplicate the Ambient GameObject twice, renaming them to “Escape” and “Caught”.
• Disable ‘Play On Awake’ and ‘Loop’ for both.
• Set Volume to 1.
3. Assign Audio Clips:
• For ‘Escape’, assign SFXWin as the AudioClip.
• For ‘Caught’, assign SFXGameOver as the AudioClip.
4. Organize Audio Sources:
• Create an empty GameObject named “Audio”.
• Make ‘Ambient’, ‘Escape’, and ‘Caught’ child objects of ‘Audio’.

Updating GameEnding Script

5. Modify GameEnding Script:
• Add AudioSource references for exitAudio and caughtAudio.
• Implement a boolean m_HasAudioPlayed to ensure audio plays only once.
• Modify EndLevel method to include AudioSource parameter and logic for playing audio.
• Update calls to EndLevel in Update method with corresponding AudioSource arguments.

Implementing Footsteps Audio

6. Set Up Footsteps Audio for JohnLemon:
• Select JohnLemon GameObject and add an AudioSource component.
• Set AudioClip to SFXFootstepsLooping.
• Keep Spatial Blend fully 2D.
• Disable ‘Play On Awake’ and enable ‘Loop’.
7. Update PlayerMovement Script:
• Add an AudioSource reference.
• Assign the AudioSource in the Start method.
• Modify FixedUpdate to play footsteps audio when JohnLemon is walking and stop when stationary.

Final Audio Adjustments

8. Adjust Audio Listener:
• Remove Audio Listener from Main Camera.
• Add Audio Listener to JohnLemon GameObject.
9. Update JohnLemon Prefab:
• Apply changes of AudioSource and Audio Listener to the JohnLemon Prefab.
10. Add Audio Source to Ghosts:

• Select a Ghost GameObject and open the Prefab for editing.
• Add an Audio Source with SFXGhostMove AudioClip.
• Set Loop to enabled, Volume to 0.4, and Spatial Blend to 1 (fully 3D).

11. Tweak 3D Sound Settings:

• Adjust Max Distance to 10.
• Change Volume Rolloff to Custom Rolloff.

12. Correct Ghost Sound Direction:

• Set the Spread property to 180 in the Audio Source for Ghost Prefab to create a directionless sound.

13. Test the Game:

• Save all changes and test the game to experience the new audio effects.

Final Code for GameEnding and PlayerMovement Scripts