UGTK / Toolkit / Ui Module / Slider System Completed

Slider System

Summary

The Slider System manages to change the value of the slider with animation (so the value does not change instantly).

Content

Modules Dependencies
Setup
How To Use
Testing Scene
Technical Info

Modules Dependencies

TextMeshPro: used by the prefabs that show the value as text.

Everything else is Unity UI. Three prefabs ship with the module: Slider (the plain one), CircularSlider (a radial fill) and CircularTimerSlider (a radial fill driven by time).

Setup

Add Mn_SliderController to a GameObject that already has a Slider, or start from one of the three prefabs.
Assign the Slider reference and choose the Update Mode.

How To Use

sliderController.UpdateSliderToValue(0.75f);

The bar then travels to the new value instead of snapping to it, and raises onStartSliderValueChanged when it sets off and onEndSliderValueChanged when it arrives.

Update Mode is the choice that matters, and the two options behave differently in a way that only shows up with real data:

Mode	Meaning	Behaves like
`Speed`	units per second	a fixed rate: a large change takes proportionally longer
`Time`	seconds for the whole trip	a fixed duration: every change takes `totalTime`, whatever its size

For a health bar, Speed is usually right — a big hit should visibly take longer to drain than a scratch. For a loading bar with a known duration, Time is right.

Things worth knowing:

instantSetMode turns the animation off entirely. Use it when restoring a saved game, where a bar that animates from zero to its stored value looks like something is happening.
Calling UpdateSliderToValue again mid-travel retargets the bar from wherever it currently is, so rapid consecutive hits do not queue up — they just move the destination.
onEndSliderValueChanged fires when the bar reaches its target, not when the underlying value changed. A death screen hung off it appears after the bar finishes emptying, which is usually the effect you want but is worth being deliberate about.
The controller writes the slider's value directly, so anything else writing to the same slider in the same frame will fight it.

Testing Scene

Technical Info

Path	Content
`Scripts/Runtime/Mn_SliderController.cs`	The component: `UpdateSliderToValue`, the `minValue`/`maxValue`/`currentValue` properties and the two travel events
`Scripts/Runtime/E_UpdateMode.cs`	The two modes, `Speed` and `Time`
`Scripts/Editor/Mn_SliderControllerEditor.cs`	Inspector: shows only the field the chosen mode uses, so an irrelevant speed is not left looking meaningful
`Prefabs/Slider.prefab`	Plain horizontal bar
`Prefabs/CircularSlider.prefab`	Radial fill
`Prefabs/CircularTimerSlider.prefab`	Radial fill driven by time