Accessibility

UI scale, colourblind correction, reduce motion, and subtitle size and background. These apply immediately — someone choosing a colourblind preset or a text size has to see the effect to judge it, and hiding that behind an Apply button makes the setting nearly unusable.

Colourblind correction

Two different transforms are easy to confuse, and shipping the wrong one is worse than shipping nothing:

Applying a simulation matrix to someone who already has that deficiency helps nobody — it just makes their screen worse. GetDaltonizationMatrix is the one to ship:

ColorMatrix correction = ColorblindCorrection.GetDaltonizationMatrix(ColorblindPreset.Deuteranopia);

The simulation matrices are the widely used Viénot–Brettel–Mollon approximations. Daltonization is derived from them as I + E·(I − S), where E redistributes the simulation error — so red-green cues become blue-yellow cues.

Achromatopsia deliberately returns identity. With no colour vision there is no channel to move information into, so redistributing the error would only distort the image. Handle it with contrast and shape instead.

These are approximations, not clinical instruments. They help, and they are no substitute for also conveying information through shape, pattern, position and text. A player who cannot distinguish your red and green markers needs them to differ in more than hue.

The settings

Every key is optional; leave one empty and that aspect is unmanaged.

Everything is clamped before it reaches your UI, including NaN, which falls back to a sane default rather than propagating. A stored value from an older build or a hand-edited save must never leave a player with an interface they cannot read or dismiss.

Subtitles get a wider range than the UI (up to 3×) because subtitle legibility is often the single most requested accessibility feature, and a menu that fits on screen is a lower bar than dialogue you can read from a sofa.

Wiring it up

Values are published, not imposed. UI scale means something different to a uGUI CanvasScaler, a UI Toolkit panel and a bespoke HUD, so each value is raised as a UnityEvent and set as a global shader value. Wire them in the inspector:

public void SetUiScale(float scale)
{
    _canvasScaler.scaleFactor = scale;
}

public void SetColorblindPreset(ColorblindPreset preset)
{
    _correctionVolume.weight = preset == ColorblindPreset.None ? 0f : 1f;
}

The correction matrix is also uploaded to a global shader matrix, _WagSettingsColorblindMatrix by default, for a full-screen effect to read directly. Reduce motion sets _WagSettingsReduceMotion to 1 or 0. Both property names are configurable.

Reduce motion is deliberately just a published flag — what counts as excessive motion is game-specific. Camera shake, screen-space blur, parallax, large UI transitions and auto-play cutscene movement are the usual suspects.

Setting it up

1. Create the settings you want and add them to your SettingsProfile.
2. Add Component → WaggleBum → WagSettings → Accessibility Applier.
3. Wire each event to your UI.
4. Put it under the WagSettings Manager, which attaches it when it starts.

What throws, and what only warns

Apply mode

Defaults to Immediate, and you should keep it that way. See Extensibility for the modes.