Whistling mechanic

In the game, you can whistle by pressing the T key. However, this mechanic is not explained anywhere in the game due to the absence of a control mapper, so most players remain unaware of it unless they accidentally press T or hear about it from someone else. 
The original purpose of this mechanic was to let players produce in-game sounds without needing a microphone, which is helpful for those who prefer not to use one or don’t have one. Currently, the mechanic uses whistling sound effects, some of which have been confirmed as stock audio. There were plans to implement different voice clips based on various in-game situations, but these have yet to be implemented.
=== Whistling audios ===