implement berserk intensity

Core/Layer/Worlds/WorldLayer.Render.Hud.cs

@@ -285,7 +285,13 @@ private void DrawHudEffects(IHudRenderContext hud)
 
         IPowerup? powerup = Player.Inventory.PowerupEffectColor;
         if (powerup?.DrawColor != null && powerup.DrawPowerupEffect)
-            hud.Clear(powerup.DrawColor.Value, powerup.DrawAlpha);
+        {
+            var alpha = powerup.DrawAlpha;
+            if (powerup.PowerupType == PowerupType.Strength)
+                alpha *= (float)m_config.Game.BerserkIntensity;
+
+            hud.Clear(powerup.DrawColor.Value, alpha);
+        }
 
         if (Player.BonusCount > 0)
             hud.Clear(PickupColor, 0.2f);

Core/Render/Renderer.cs

@@ -216,6 +216,8 @@ private static PaletteIndex GetPalette(IConfig config, Player player)
         {
             if (damageCount == player.DamageCount)
                 damageCount = (int)(player.DamageCount * config.Game.PainIntensity);
+            else
+                damageCount = (int)(damageCount * config.Game.BerserkIntensity);
 
             palette = GetDamagePalette(damageCount);
         }

Core/Util/Configs/Components/ConfigGame.cs

@@ -33,6 +33,10 @@ public class ConfigGame: ConfigElement<ConfigGame>
     [OptionMenu(OptionSectionType.General, "Pain Intensity", spacer: true, sliderMin: 0, sliderMax: 5.0, sliderStep: .1)]
     public readonly ConfigValue<double> PainIntensity = new(1.0);
 
+    [ConfigInfo("Scale red amount drawn to screen when the player pickups up a berserk.")]
+    [OptionMenu(OptionSectionType.General, "Berserk Intensity", sliderMin: 0, sliderMax: 5.0, sliderStep: .1)]
+    public readonly ConfigValue<double> BerserkIntensity = new(1.0);
+
     [ConfigInfo("Transition effect between levels/screens.")]
     [OptionMenu(OptionSectionType.General, "Transition Type")]
     public readonly ConfigValue<World.TransitionType> TransitionType = new(World.TransitionType.Melt);

RELEASENOTES.md

@@ -9,6 +9,7 @@
   - Controller gyroscope support (tested with PS DualShock 4, should work with other SDL-supported controllers)
   - Emulate boom behavior that let player move out of one-sided lines
   - Controller rumble feedback
+  - Add option for berserk intensity
 
 ## Bug fixes:
   - Fix per ammo values for box ammo and backpack amount from dehacked patch