Custom Countdown Timer

You could use the Timer device that runs a countdown timer, but making your own countdown timer in Verse is a way that you can customize its behavior to fit exactly what you need.

This tutorial will show you how to create your own timer with Verse, and to use a callout when time is added to the countdown. Start simple, and you'll find ways to improve it, project by project.

Verse Language Features Used

• if: The if expression tests conditions and accesses values that might fail.
• block: This example uses the block expression to initialize the UI when the countdown timer is created.
• loop: The loop expression updates the UI and ends when the countdown reaches zero.
• spawn: A spawn expression starts an asynchronous expression in any context.
• message: The message type means the text can be localized, and the string you use to initialize a message variable is the default text and language for the message.
• class: This example creates a Verse class that manages and displays the countdown.
• constructor: A constructor is a special function that creates an instance of the class that it’s associated with.
• Access specifiers: You can use access specifiers to set the access level of your code.