Wearing mob heads and pumpkins is an effective way for bat ponies to protect their eyes

src/main/java/com/minelittlepony/unicopia/UTags.java

@@ -16,6 +16,8 @@ public interface UTags {
 
     Tag<Item> MAGIC_FEATHERS = item("magic_feathers");
 
+    Tag<Item> SHADES = item("sun_blockers");
+
     Tag<Block> FRAGILE = block("fragile");
     Tag<Block> INTERESTING = block("interesting");
 

src/main/java/com/minelittlepony/unicopia/client/UnicopiaClient.java

@@ -49,7 +49,7 @@ public class UnicopiaClient implements ClientModInitializer {
     }
 
     public static float getWorldBrightness(float initial) {
-        return Math.min(1, initial + 0.6F);
+        return initial > 0 ? 3 : 2;
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/entity/effect/SunBlindnessStatusEffect.java

@@ -2,12 +2,17 @@ package com.minelittlepony.unicopia.entity.effect;
 
 import org.jetbrains.annotations.Nullable;
 
+import com.minelittlepony.unicopia.EquinePredicates;
+import com.minelittlepony.unicopia.UTags;
+
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EquipmentSlot;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.entity.damage.DamageSource;
 import net.minecraft.entity.effect.StatusEffect;
 import net.minecraft.entity.effect.StatusEffectInstance;
 import net.minecraft.entity.effect.StatusEffectType;
+import net.minecraft.entity.effect.StatusEffects;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.registry.Registry;
 import net.minecraft.world.LightType;
@@ -51,6 +56,18 @@ public class SunBlindnessStatusEffect extends StatusEffect {
     }
 
     public static boolean hasSunExposure(LivingEntity entity) {
+        if (entity.hasStatusEffect(StatusEffects.BLINDNESS)) {
+            return false;
+        }
+
+        if (EquinePredicates.PLAYER_BAT.test(entity) && entity.hasStatusEffect(StatusEffects.NIGHT_VISION)) {
+            return true;
+        }
+
+        if (entity.getEquippedStack(EquipmentSlot.HEAD).isIn(UTags.SHADES)) {
+            return false;
+        }
+
         if (entity.world.isClient) {
             entity.world.calculateAmbientDarkness();
         }

src/main/resources/assets/unicopia/lang/en_us.json

@@ -67,7 +67,7 @@
 
   "unicopia.effect.tribe.stage.initial": "It appears to have no effect.",
   "unicopia.effect.tribe.stage.crawling": "You feel the skin crawling on your back.",
-  "unicopia.effect.tribe.stage.determination": "As your bones realign you are filled determination.",
+  "unicopia.effect.tribe.stage.determination": "As your bones realign you are filled by determination.",
   "unicopia.effect.tribe.stage.resurection": "Knowing you will return to this world as a %s",
 
   "effect.food_poisoning": "Food Poisoning",
@@ -76,6 +76,8 @@
   "player.miningSpeed": "Mining Speed",
   "player.gravityModifier": "Gravity",
 
+  "effect.unicopia.sun_blindness": "Sun Blindness",
+
   "effect.unicopia.change_race_earth": "Earth Pony Metamorphosis",
   "item.minecraft.potion.effect.unicopia.tribe_swap_earth": "Potion of Earth Pony Metamorphosis",
   "item.minecraft.splash_potion.effect.unicopia.tribe_swap_earth": "Splash Potion of Earth Pony Metamorphosis",

src/main/resources/data/unicopia/tags/items/shades.json

@@ -0,0 +1,12 @@
+{
+  "replace": false,
+  "values": [
+    "minecraft:carved_pumpkin",
+    "minecraft:skeleton_skull",
+    "minecraft:wither_skeleton_skull",
+    "minecraft:player_head",
+    "minecraft:zombie_head",
+    "minecraft:creeper_head",
+    "minecraft:dragon_head"
+  ]
+}