Move blocking fail logic into a base class

osu.Game/Rulesets/Mods/ModBlockFail.cs

@@ -0,0 +1,30 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Bindables;
+using osu.Game.Configuration;
+using osu.Game.Screens.Play;
+
+namespace osu.Game.Rulesets.Mods
+{
+    public abstract class ModBlockFail : Mod, IApplicableFailOverride, IApplicableToHUD, IReadFromConfig
+    {
+        private Bindable<bool> hideHealthBar = new Bindable<bool>();
+
+        /// <summary>
+        /// We never fail, 'yo.
+        /// </summary>
+        public bool AllowFail => false;
+
+        public void ReadFromConfig(OsuConfigManager config)
+        {
+            hideHealthBar = config.GetBindable<bool>(OsuSetting.HideHealthBar);
+        }
+
+        public void ApplyToHUD(HUDOverlay overlay)
+        {
+            if (hideHealthBar.Value)
+                overlay.HealthDisplay.Hide();
+        }
+    }
+}