From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Mon, 28 Jun 2021 14:07:35 -0500
Subject: [PATCH] Eating glow berries adds glow effect


diff --git a/src/main/java/net/minecraft/world/item/Items.java b/src/main/java/net/minecraft/world/item/Items.java
index c157e7f6fa28f713fcfb699daa329abed0b32cd5..bb2103a488964f25335393fa91e8ae5749eca333 100644
--- a/src/main/java/net/minecraft/world/item/Items.java
+++ b/src/main/java/net/minecraft/world/item/Items.java
@@ -1535,7 +1535,7 @@ public class Items {
         "sweet_berries", new ItemNameBlockItem(Blocks.SWEET_BERRY_BUSH, new Item.Properties().food(Foods.SWEET_BERRIES))
     );
     public static final Item GLOW_BERRIES = registerItem(
-        "glow_berries", new ItemNameBlockItem(Blocks.CAVE_VINES, new Item.Properties().food(Foods.GLOW_BERRIES))
+        "glow_berries", new org.purpurmc.purpur.item.GlowBerryItem(Blocks.CAVE_VINES, new Item.Properties().food(Foods.GLOW_BERRIES)) // Purpur
     );
     public static final Item CAMPFIRE = registerBlock(Blocks.CAMPFIRE);
     public static final Item SOUL_CAMPFIRE = registerBlock(Blocks.SOUL_CAMPFIRE);
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index cc612f8328abfa27d784181c5aebbcd9e0b10c05..b21d288f62f473cd9d1057d3d2a452f16b0291d0 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -220,6 +220,7 @@ public class PurpurWorldConfig {
     public int enderPearlCooldown = 20;
     public int enderPearlCooldownCreative = 20;
     public float enderPearlEndermiteChance = 0.05F;
+    public int glowBerriesEatGlowDuration = 0;
     private void itemSettings() {
         itemImmuneToCactus.clear();
         getList("gameplay-mechanics.item.immune.cactus", new ArrayList<>()).forEach(key -> {
@@ -265,6 +266,7 @@ public class PurpurWorldConfig {
         enderPearlCooldown = getInt("gameplay-mechanics.item.ender-pearl.cooldown", enderPearlCooldown);
         enderPearlCooldownCreative = getInt("gameplay-mechanics.item.ender-pearl.creative-cooldown", enderPearlCooldownCreative);
         enderPearlEndermiteChance = (float) getDouble("gameplay-mechanics.item.ender-pearl.endermite-spawn-chance", enderPearlEndermiteChance);
+        glowBerriesEatGlowDuration = getInt("gameplay-mechanics.item.glow_berries.eat-glow-duration", glowBerriesEatGlowDuration);
     }
 
     public double minecartMaxSpeed = 0.4D;
diff --git a/src/main/java/org/purpurmc/purpur/item/GlowBerryItem.java b/src/main/java/org/purpurmc/purpur/item/GlowBerryItem.java
new file mode 100644
index 0000000000000000000000000000000000000000..7f526883495b3222746de3d0442e9e4fb5107036
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/item/GlowBerryItem.java
@@ -0,0 +1,26 @@
+package org.purpurmc.purpur.item;
+
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.world.effect.MobEffects;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.item.ItemNameBlockItem;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import org.bukkit.event.entity.EntityPotionEffectEvent;
+
+public class GlowBerryItem extends ItemNameBlockItem {
+    public GlowBerryItem(Block block, Properties settings) {
+        super(block, settings);
+    }
+
+    @Override
+    public ItemStack finishUsingItem(ItemStack stack, Level world, LivingEntity user) {
+        ItemStack result = super.finishUsingItem(stack, world, user);
+        if (world.purpurConfig.glowBerriesEatGlowDuration > 0 && user instanceof ServerPlayer player) {
+            player.addEffect(new MobEffectInstance(MobEffects.GLOWING, world.purpurConfig.glowBerriesEatGlowDuration), EntityPotionEffectEvent.Cause.FOOD);
+        }
+        return result;
+    }
+}