The Simple Scroll Extension adds smooth scrolling physics to Scratch by introducing inertia, acceleration, and friction. This extension allows Scratch projects to detect scrolling motion with realistic behaviour, making interactions feel more natural.
- Detects scrolling with inertia, meaning movement continues briefly after scrolling stops.
- Provides the direction of the scroll movement (
up,down, ornone). - Returns the current scroll inertia value, simulating real-world momentum.
- Open TurboWarp.
- Download the file SimpleScroll.js
- Load the extension via TurboWarp custom Javascript extensions in a custom extension environment. MAKE SURE TO TICK THE "RUN WITHOUT SANDBOX" TICK, OR THE EXTENSION WILL NOT WORK!
- The extension will now be available for use in your TurboWarp project.
Text: scroll direction with inertia
Type: Reporter
Description: Returns down, up, or none based on the current inertia-adjusted scroll movement.
Text: scroll inertia value
Type: Reporter
Description: Returns the current inertia value as a number (with two decimal places), indicating the velocity of the scroll.
Text: scroll direction
Type: Reporter
Description: Provides real-time scroll direction (down, up, or none) without inertia influence.
- The extension listens for mouse wheel events (
wheel) and updates the scroll velocity. - Acceleration is applied to simulate a natural movement effect.
- Friction gradually reduces velocity over time, mimicking real-world inertia.
- The extension updates scroll direction and inertia every 50ms to ensure smooth behavior.
- Create scrolling backgrounds that feel more dynamic.
- Implement physics-based UI interactions in Scratch.
- Detect user scroll behavior to trigger animations or events.
This extension is open-source and can be modified freely. Feel free to improve and extend its functionality!