Who's Done With Me?

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  Logo

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  Playing Screen

The Inspiration

The project was inspired by the “Decision Roulette” trend.
I wanted to create a Lens that felt more personal and edgy than a standard random picker. The idea was to take the relatable feeling of being “annoying” to people we love (or our bank accounts) and turn it into a shareable, humorous moment.

Building the Experience

The core of the experience is a Weighted Probability Engine.
Instead of every result having an equal chance, I built a system where the best outcome (Nobody) is rare, making the spicier results feel more common and funny.

I also integrated a typewriter effect for the results to build suspense during the reveal.

The Technical Logic

To ensure the wheel lands exactly on the visually correct slice, I used a mapping system between the final rotation angle and the sector indices.
The target angle is calculated using:

$$ TargetAngle = (Spins \cdot 360) + (360 - SectorOffset) $$

The smoothing of the wheel uses a cubic ease-out function to simulate realistic friction:

$$ Ease = 1 - (1 - t)^3 $$

Challenges Faced

The biggest hurdle was Emoji Rendering.
Standard JavaScript string slicing often breaks complex emojis (such as couple or family emojis). I solved this by using Array.from() to treat the string as a collection of visual characters rather than raw bytes, ensuring the typewriter effect renders correctly.

Another challenge was Platform Compliance.
The original concept was too negative for Snapchat’s guidelines, so I pivoted the branding to “Who’s done with me?”—a phrase culturally understood as a joke, making it safe for a wider audience.

What I Learned

• UX Suspense: Using audio ticks and easing functions to create anticipation.
• String Manipulation: Handling Unicode and surrogate pairs for emojis in Lens Studio.
• Branding Adaptation: Tweaking a concept’s tone to meet community guidelines without losing the fun.

Built With

• api
• javascript
• lensstudio
• screentransform