Добавить доступный интерфейс этапа 3

app/src/main/java/com/projectsacrifice/game/AccessibilitySettings.java

@@ -0,0 +1,69 @@
+package com.projectsacrifice.game;
+
+public final class AccessibilitySettings {
+    private enum TextSize {
+        STANDARD("Standard", 1f),
+        LARGE("Large", 1.25f);
+
+        final String label;
+        final float scale;
+
+        TextSize(String label, float scale) {
+            this.label = label;
+            this.scale = scale;
+        }
+    }
+
+    private final TextSize textSize;
+    private final boolean highContrastEnabled;
+
+    private AccessibilitySettings(TextSize textSize, boolean highContrastEnabled) {
+        this.textSize = textSize;
+        this.highContrastEnabled = highContrastEnabled;
+    }
+
+    public static AccessibilitySettings defaults() {
+        return new AccessibilitySettings(TextSize.STANDARD, false);
+    }
+
+    static AccessibilitySettings restore(int textSizeIndex, boolean highContrastEnabled) {
+        TextSize[] values = TextSize.values();
+        TextSize restored = textSizeIndex >= 0 && textSizeIndex < values.length
+                ? values[textSizeIndex] : TextSize.STANDARD;
+        return new AccessibilitySettings(restored, highContrastEnabled);
+    }
+
+    public String textSizeLabel() {
+        return textSize.label;
+    }
+
+    public float textScale() {
+        return textSize.scale;
+    }
+
+    public float canvasTextSize(float baseSize) {
+        return baseSize * textSize.scale;
+    }
+
+    public AccessibilitySettings nextTextSize() {
+        TextSize[] values = TextSize.values();
+        return new AccessibilitySettings(values[(textSize.ordinal() + 1) % values.length],
+                highContrastEnabled);
+    }
+
+    public boolean highContrastEnabled() {
+        return highContrastEnabled;
+    }
+
+    public String highContrastLabel() {
+        return highContrastEnabled ? "On" : "Off";
+    }
+
+    public AccessibilitySettings toggleHighContrast() {
+        return new AccessibilitySettings(textSize, !highContrastEnabled);
+    }
+
+    int textSizeIndex() {
+        return textSize.ordinal();
+    }
+}