_fixed a small thing (and mod menu integration)_

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-	id 'fabric-loom' version '1.4-SNAPSHOT'
+	id 'fabric-loom' version '1.5-SNAPSHOT'
 	id 'maven-publish'
 }
 
@@ -38,8 +38,8 @@ dependencies {
 
 	// Fabric API. This is technically optional, but you probably want it anyway.
 	modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
-	
-	// Uncomment the following line to enable the deprecated Fabric API modules. 
+
+	// Uncomment the following line to enable the deprecated Fabric API modules.
 	// These are included in the Fabric API production distribution and allow you to update your mod to the latest modules at a later more convenient time.
 
 	// modImplementation "net.fabricmc.fabric-api:fabric-api-deprecated:${project.fabric_version}"

src/client/java/net/i_no_am/glowing_entities/GlowingEntitiesClient.java

@@ -16,7 +16,7 @@ public void onInitializeClient() {
 						.executes(context -> {
 							int value = IntegerArgumentType.getInteger(context, "glowing");
 							IEntityDataSaver playerData = (IEntityDataSaver) context.getSource().getPlayer();
-							playerData.getPersistentData().putInt("glow",value);
+							playerData.glowing_entities$getPersistentData().putInt("glow",value);
 							if (value > 15)
 								value = 15;
 							String glow = value < 0 ? "Normal" : String.valueOf(value);

src/client/java/net/i_no_am/glowing_entities/IEntityDataSaver.java

@@ -3,5 +3,5 @@
 import net.minecraft.nbt.NbtCompound;
 
 public interface IEntityDataSaver {
-    NbtCompound getPersistentData();
+    NbtCompound glowing_entities$getPersistentData();
 }

src/client/java/net/i_no_am/glowing_entities/mixin/client/EntityRendererMixin.java

@@ -16,18 +16,23 @@
 public abstract class EntityRendererMixin {
 
 	@Inject(method = "getBlockLight", at = @At("RETURN"), cancellable = true)
-	public <T extends Entity> void getLight(T entity, BlockPos pos, CallbackInfoReturnable<Integer> cir){
+	public <T extends Entity> void getLight(T entity, BlockPos pos, CallbackInfoReturnable<Integer> cir) {
 		int glow = 0;
 		if (entity.getWorld().isClient() && MinecraftClient.getInstance().player != null) {
-            PlayerEntity player = entity.getWorld().getPlayerByUuid(MinecraftClient.getInstance().player.getUuid());
+			PlayerEntity player = entity.getWorld().getPlayerByUuid(MinecraftClient.getInstance().player.getUuid());
 			IEntityDataSaver playerData = (IEntityDataSaver) player;
-			if(playerData != null && playerData.getPersistentData().contains("glow"))
-				glow = playerData.getPersistentData().getInt("glow");
-        }
+			if (playerData != null && playerData.glowing_entities$getPersistentData().contains("glow"))
+				glow = playerData.glowing_entities$getPersistentData().getInt("glow");
+		}
+		if (glow == 0) {
+			cir.setReturnValue(0); // Return light level 0 if glow is explicitly set to 0
+			return;
+		}
 		if (glow > 15)
 			glow = 15;
 		if (glow < 0)
 			cir.setReturnValue(entity.isOnFire() ? 15 : entity.getWorld().getLightLevel(LightType.BLOCK, pos));
-		else cir.setReturnValue(glow);
+		else
+			cir.setReturnValue(glow);
 	}
-}
+}

src/client/java/net/i_no_am/glowing_entities/mixin/client/ModEntityDataSaverMixin.java

@@ -4,25 +4,27 @@
 import net.minecraft.nbt.NbtCompound;
 import net.i_no_am.glowing_entities.IEntityDataSaver;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(Entity.class)
 public abstract class ModEntityDataSaverMixin implements IEntityDataSaver {
+    @Unique
     private NbtCompound persistentData;
 
     @Override
-    public NbtCompound getPersistentData() {
+    public NbtCompound glowing_entities$getPersistentData() {
         if(this.persistentData == null) {
             this.persistentData = new NbtCompound();
         }
         return persistentData;
     }
 
     @Inject(method = "writeNbt", at = @At("HEAD"))
-    protected void injectWriteMethod(NbtCompound nbt, CallbackInfoReturnable info) {
+    protected void injectWriteMethod(NbtCompound nbt, CallbackInfoReturnable<NbtCompound> info) {
         if(persistentData != null) {
             nbt.put("glowingentity.uhb_data", persistentData);
         }