PaperMC/patches/server/0126-ExperienceOrbs-API-for-Reason-Source-Triggering-play.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 19 Dec 2017 16:31:46 -0500
Subject: [PATCH] ExperienceOrbs API for Reason/Source/Triggering player

Adds lots of information about why this orb exists.

Replaces isFromBottle() with logic that persists entity reloads too.

diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 99771070840a545537fe352bda1c4aaeedd638ca..2fab84c5e2dc4de39281956390588a9a71d02f68 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -435,7 +435,7 @@ public class ServerPlayerGameMode {
 
                 // Drop event experience
                 if (flag && event != null) {
-                    iblockdata.getBlock().popExperience(this.level, pos, event.getExpToDrop());
+                    iblockdata.getBlock().popExperience(this.level, pos, event.getExpToDrop(), this.player); // Paper
                 }
 
                 return true;
diff --git a/src/main/java/net/minecraft/world/entity/ExperienceOrb.java b/src/main/java/net/minecraft/world/entity/ExperienceOrb.java
index 25a45e680f9fdea90f43d59de87a3a500f4ee8c0..0330a62a6a0060d2a96de191db68774588fc7ae5 100644
--- a/src/main/java/net/minecraft/world/entity/ExperienceOrb.java
+++ b/src/main/java/net/minecraft/world/entity/ExperienceOrb.java
@@ -44,9 +44,63 @@ public class ExperienceOrb extends Entity {
     public int value;
     public int count;
     private Player followingPlayer;
+    // Paper start
+    @javax.annotation.Nullable
+    public java.util.UUID sourceEntityId;
+    @javax.annotation.Nullable
+    public java.util.UUID triggerEntityId;
+    public org.bukkit.entity.ExperienceOrb.SpawnReason spawnReason = org.bukkit.entity.ExperienceOrb.SpawnReason.UNKNOWN;
+
+    private void loadPaperNBT(CompoundTag tag) {
+        if (!tag.contains("Paper.ExpData", net.minecraft.nbt.Tag.TAG_COMPOUND)) {
+            return;
+        }
+        CompoundTag comp = tag.getCompound("Paper.ExpData");
+        if (comp.hasUUID("source")) {
+            this.sourceEntityId = comp.getUUID("source");
+        }
+        if (comp.hasUUID("trigger")) {
+            this.triggerEntityId = comp.getUUID("trigger");
+        }
+        if (comp.contains("reason")) {
+            String reason = comp.getString("reason");
+            try {
+                this.spawnReason = org.bukkit.entity.ExperienceOrb.SpawnReason.valueOf(reason);
+            } catch (Exception e) {
+                this.level().getCraftServer().getLogger().warning("Invalid spawnReason set for experience orb: " + e.getMessage() + " - " + reason);
+            }
+        }
+    }
+    private void savePaperNBT(CompoundTag tag) {
+        CompoundTag comp = new CompoundTag();
+        if (this.sourceEntityId != null) {
+            comp.putUUID("source", this.sourceEntityId);
+        }
+        if (this.triggerEntityId != null) {
+            comp.putUUID("trigger", triggerEntityId);
+        }
+        if (this.spawnReason != null && this.spawnReason != org.bukkit.entity.ExperienceOrb.SpawnReason.UNKNOWN) {
+            comp.putString("reason", this.spawnReason.name());
+        }
+        tag.put("Paper.ExpData", comp);
+    }
 
+    @io.papermc.paper.annotation.DoNotUse
+    @Deprecated
     public ExperienceOrb(Level world, double x, double y, double z, int amount) {
+        this(world, x, y, z, amount, null, null);
+    }
+
+    public ExperienceOrb(Level world, double x, double y, double z, int amount, @javax.annotation.Nullable org.bukkit.entity.ExperienceOrb.SpawnReason reason, @javax.annotation.Nullable Entity triggerId) {
+        this(world, x, y, z, amount, reason, triggerId, null);
+    }
+
+    public ExperienceOrb(Level world, double x, double y, double z, int amount, @javax.annotation.Nullable org.bukkit.entity.ExperienceOrb.SpawnReason reason, @javax.annotation.Nullable Entity triggerId, @javax.annotation.Nullable Entity sourceId) {
         this(EntityType.EXPERIENCE_ORB, world);
+        this.sourceEntityId = sourceId != null ? sourceId.getUUID() : null;
+        this.triggerEntityId = triggerId != null ? triggerId.getUUID() : null;
+        this.spawnReason = reason != null ? reason : org.bukkit.entity.ExperienceOrb.SpawnReason.UNKNOWN;
+        // Paper end
         this.setPos(x, y, z);
         this.setYRot((float) (this.random.nextDouble() * 360.0D));
         this.setDeltaMovement((this.random.nextDouble() * 0.20000000298023224D - 0.10000000149011612D) * 2.0D, this.random.nextDouble() * 0.2D * 2.0D, (this.random.nextDouble() * 0.20000000298023224D - 0.10000000149011612D) * 2.0D);
@@ -170,12 +224,20 @@ public class ExperienceOrb extends Entity {
     }
 
     public static void award(ServerLevel world, Vec3 pos, int amount) {
+        // Paper start - add reasons for orbs
+        award(world, pos, amount, null, null, null);
+    }
+    public static void award(ServerLevel world, Vec3 pos, int amount, org.bukkit.entity.ExperienceOrb.SpawnReason reason, Entity triggerId) {
+        award(world, pos, amount, reason, triggerId, null);
+    }
+    public static void award(ServerLevel world, Vec3 pos, int amount, org.bukkit.entity.ExperienceOrb.SpawnReason reason, Entity triggerId, Entity sourceId) {
+        // Paper end - add reasons for orbs
         while (amount > 0) {
             int j = ExperienceOrb.getExperienceValue(amount);
 
             amount -= j;
             if (!ExperienceOrb.tryMergeToExisting(world, pos, j)) {
-                world.addFreshEntity(new ExperienceOrb(world, pos.x(), pos.y(), pos.z(), j));
+                world.addFreshEntity(new ExperienceOrb(world, pos.x(), pos.y(), pos.z(), j, reason, triggerId, sourceId)); // Paper - add reason
             }
         }
 
@@ -245,6 +307,7 @@ public class ExperienceOrb extends Entity {
         nbt.putShort("Age", (short) this.age);
         nbt.putShort("Value", (short) this.value);
         nbt.putInt("Count", this.count);
+        this.savePaperNBT(nbt); // Paper
     }
 
     @Override
@@ -253,6 +316,7 @@ public class ExperienceOrb extends Entity {
         this.age = nbt.getShort("Age");
         this.value = nbt.getShort("Value");
         this.count = Math.max(nbt.getInt("Count"), 1);
+        this.loadPaperNBT(nbt); // Paper
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 369666bdbb3a68a223a75c3c519d6838bc658c40..cacada8cfbe171cdb10aa2a78483ef3b613b414a 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1788,7 +1788,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
     protected void dropExperience(@Nullable Entity attacker) {
         // CraftBukkit start - Update getExpReward() above if the removed if() changes!
         if (!(this instanceof net.minecraft.world.entity.boss.enderdragon.EnderDragon)) { // CraftBukkit - SPIGOT-2420: Special case ender dragon will drop the xp over time
-            ExperienceOrb.award((ServerLevel) this.level(), this.position(), this.expToDrop);
+            ExperienceOrb.award((ServerLevel) this.level(), this.position(), this.expToDrop, this instanceof ServerPlayer ? org.bukkit.entity.ExperienceOrb.SpawnReason.PLAYER_DEATH : org.bukkit.entity.ExperienceOrb.SpawnReason.ENTITY_DEATH, attacker, this); // Paper
             this.expToDrop = 0;
         }
         // CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/animal/Animal.java b/src/main/java/net/minecraft/world/entity/animal/Animal.java
index 1af60680c512e0743920440215247d191f9a8385..370c444153d04fe7896952219604d83a19a996e2 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Animal.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Animal.java
@@ -250,12 +250,14 @@ public abstract class Animal extends AgeableMob {
 
     public void finalizeSpawnChildFromBreeding(ServerLevel worldserver, Animal entityanimal, @Nullable AgeableMob entityageable, int experience) {
         // CraftBukkit end
-        Optional.ofNullable(this.getLoveCause()).or(() -> {
-            return Optional.ofNullable(entityanimal.getLoveCause());
-        }).ifPresent((entityplayer) -> {
+        // Paper start
+        ServerPlayer entityplayer = this.getLoveCause();
+        if (entityplayer == null) entityplayer = entityanimal.getLoveCause();
+        if (entityplayer != null) {
+            // Paper end
             entityplayer.awardStat(Stats.ANIMALS_BRED);
             CriteriaTriggers.BRED_ANIMALS.trigger(entityplayer, this, entityanimal, entityageable);
-        });
+        } // Paper
         this.setAge(6000);
         entityanimal.setAge(6000);
         this.resetLove();
@@ -264,7 +266,7 @@ public abstract class Animal extends AgeableMob {
         if (worldserver.getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) {
             // CraftBukkit start - use event experience
             if (experience > 0) {
-                worldserver.addFreshEntity(new ExperienceOrb(worldserver, this.getX(), this.getY(), this.getZ(), experience));
+                worldserver.addFreshEntity(new ExperienceOrb(worldserver, this.getX(), this.getY(), this.getZ(), experience, org.bukkit.entity.ExperienceOrb.SpawnReason.BREED, entityplayer, entityageable)); // Paper
             }
             // CraftBukkit end
         }
diff --git a/src/main/java/net/minecraft/world/entity/animal/Fox.java b/src/main/java/net/minecraft/world/entity/animal/Fox.java
index de2a25db9465bc4ae3cbf7ff6d3af756df679f4a..a6788da1505f9e119c03b94488f5e006da13e918 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Fox.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Fox.java
@@ -897,7 +897,7 @@ public class Fox extends Animal implements VariantHolder<Fox.Type> {
                 if (this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) {
                     // CraftBukkit start - use event experience
                     if (experience > 0) {
-                        this.level.addFreshEntity(new ExperienceOrb(this.level, this.animal.getX(), this.animal.getY(), this.animal.getZ(), experience));
+                        this.level.addFreshEntity(new ExperienceOrb(this.level, this.animal.getX(), this.animal.getY(), this.animal.getZ(), experience, org.bukkit.entity.ExperienceOrb.SpawnReason.BREED, entityplayer, entityfox)); // Paper
                     }
                     // CraftBukkit end
                 }
diff --git a/src/main/java/net/minecraft/world/entity/animal/Turtle.java b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
index d4659ce017692c6f8cabb56137a231bc566614b0..6f90ee749aed98b97868aa40fc233d164ddc2ef6 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Turtle.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
@@ -455,7 +455,7 @@ public class Turtle extends Animal {
             RandomSource randomsource = this.animal.getRandom();
 
             if (this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) {
-                this.level.addFreshEntity(new ExperienceOrb(this.level, this.animal.getX(), this.animal.getY(), this.animal.getZ(), randomsource.nextInt(7) + 1));
+                this.level.addFreshEntity(new ExperienceOrb(this.level, this.animal.getX(), this.animal.getY(), this.animal.getZ(), randomsource.nextInt(7) + 1, org.bukkit.entity.ExperienceOrb.SpawnReason.BREED, entityplayer)); // Paper;
             }
 
         }
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
index dba973ba5088d253aa67f5577663cccda7f4edd1..5e83ca6fa874227b5d63148502405bb77f5345ba 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
@@ -689,7 +689,7 @@ public class EnderDragon extends Mob implements Enemy {
 
         if (this.level() instanceof ServerLevel) {
             if (this.dragonDeathTime > 150 && this.dragonDeathTime % 5 == 0 && true) {  // CraftBukkit - SPIGOT-2420: Already checked for the game rule when calculating the xp
-                ExperienceOrb.award((ServerLevel) this.level(), this.position(), Mth.floor((float) short0 * 0.08F));
+                ExperienceOrb.award((ServerLevel) this.level(), this.position(), Mth.floor((float) short0 * 0.08F), org.bukkit.entity.ExperienceOrb.SpawnReason.ENTITY_DEATH, this.lastHurtByPlayer, this); // Paper
             }
 
             if (this.dragonDeathTime == 1 && !this.isSilent()) {
@@ -718,7 +718,7 @@ public class EnderDragon extends Mob implements Enemy {
         this.move(MoverType.SELF, new Vec3(0.0D, 0.10000000149011612D, 0.0D));
         if (this.dragonDeathTime == 200 && this.level() instanceof ServerLevel) {
             if (true) { // CraftBukkit - SPIGOT-2420: Already checked for the game rule when calculating the xp
-                ExperienceOrb.award((ServerLevel) this.level(), this.position(), Mth.floor((float) short0 * 0.2F));
+                ExperienceOrb.award((ServerLevel) this.level(), this.position(), Mth.floor((float) short0 * 0.2F), org.bukkit.entity.ExperienceOrb.SpawnReason.ENTITY_DEATH, this.lastHurtByPlayer, this); // Paper
             }
 
             if (this.dragonFight != null) {
diff --git a/src/main/java/net/minecraft/world/entity/npc/Villager.java b/src/main/java/net/minecraft/world/entity/npc/Villager.java
index 243eb1e54293c763a06febff551c051398d43535..79fdc8284f57a4f11e1954936ad574f7b8df5435 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -634,7 +634,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
         }
 
         if (offer.shouldRewardExp()) {
-            this.level().addFreshEntity(new ExperienceOrb(this.level(), this.getX(), this.getY() + 0.5D, this.getZ(), i));
+            this.level().addFreshEntity(new ExperienceOrb(this.level(), this.getX(), this.getY() + 0.5D, this.getZ(), i, org.bukkit.entity.ExperienceOrb.SpawnReason.VILLAGER_TRADE, this.getTradingPlayer(), this)); // Paper
         }
 
     }
diff --git a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
index 0f2e2e42e732e942664d70a72dd9c4e47c7e95b6..e51cb9c96e1bd13c00bf938436f4fc26d80055a1 100644
--- a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
+++ b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
@@ -207,7 +207,7 @@ public class WanderingTrader extends net.minecraft.world.entity.npc.AbstractVill
         if (offer.shouldRewardExp()) {
             int i = 3 + this.random.nextInt(4);
 
-            this.level().addFreshEntity(new ExperienceOrb(this.level(), this.getX(), this.getY() + 0.5D, this.getZ(), i));
+            this.level().addFreshEntity(new ExperienceOrb(this.level(), this.getX(), this.getY() + 0.5D, this.getZ(), i, org.bukkit.entity.ExperienceOrb.SpawnReason.VILLAGER_TRADE, this.getTradingPlayer(), this)); // Paper
         }
 
     }
diff --git a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
index ed43ad94ca007a54e3c32d5e17c141048eeb5835..0b4c67b9de6893601f032a8fae103e8a98f2c767 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
@@ -525,7 +525,7 @@ public class FishingHook extends Projectile {
                     this.level().addFreshEntity(entityitem);
                     // CraftBukkit start - this.random.nextInt(6) + 1 -> playerFishEvent.getExpToDrop()
                     if (playerFishEvent.getExpToDrop() > 0) {
-                        entityhuman.level().addFreshEntity(new ExperienceOrb(entityhuman.level(), entityhuman.getX(), entityhuman.getY() + 0.5D, entityhuman.getZ() + 0.5D, playerFishEvent.getExpToDrop()));
+                        entityhuman.level().addFreshEntity(new ExperienceOrb(entityhuman.level(), entityhuman.getX(), entityhuman.getY() + 0.5D, entityhuman.getZ() + 0.5D, playerFishEvent.getExpToDrop(), org.bukkit.entity.ExperienceOrb.SpawnReason.FISHING, this.getPlayerOwner(), this)); // Paper
                     }
                     // CraftBukkit end
                     if (itemstack1.is(ItemTags.FISHES)) {
diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownExperienceBottle.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownExperienceBottle.java
index 9963db38420b91ae817a18ff084311cb45c0edee..70ceef96c6305324aef3b006f6603817ef187e9f 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownExperienceBottle.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownExperienceBottle.java
@@ -54,7 +54,7 @@ public class ThrownExperienceBottle extends ThrowableItemProjectile {
             }
             // CraftBukkit end
 
-            ExperienceOrb.award((ServerLevel) this.level(), this.position(), i);
+            ExperienceOrb.award((ServerLevel) this.level(), this.position(), i, org.bukkit.entity.ExperienceOrb.SpawnReason.EXP_BOTTLE, this.getOwner(), this); // Paper
             this.discard(EntityRemoveEvent.Cause.HIT); // CraftBukkit - add Bukkit remove cause
         }
 
diff --git a/src/main/java/net/minecraft/world/inventory/GrindstoneMenu.java b/src/main/java/net/minecraft/world/inventory/GrindstoneMenu.java
index 1c0a9ca0ccfd89dd26736012ce1c329dffb7f913..637d77d6b07ff9ee5ac1cb0470cbefcba5c7495e 100644
--- a/src/main/java/net/minecraft/world/inventory/GrindstoneMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/GrindstoneMenu.java
@@ -98,7 +98,7 @@ public class GrindstoneMenu extends AbstractContainerMenu {
             public void onTake(net.minecraft.world.entity.player.Player player, ItemStack stack) {
                 context.execute((world, blockposition) -> {
                     if (world instanceof ServerLevel) {
-                        ExperienceOrb.award((ServerLevel) world, Vec3.atCenterOf(blockposition), this.getExperienceAmount(world));
+                        ExperienceOrb.award((ServerLevel) world, Vec3.atCenterOf(blockposition), this.getExperienceAmount(world), org.bukkit.entity.ExperienceOrb.SpawnReason.GRINDSTONE, player); // Paper
                     }
 
                     world.levelEvent(1042, blockposition, 0);
diff --git a/src/main/java/net/minecraft/world/level/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
index def3e28edc206e0ba41111e26332db468223fb2e..6d0a90e9c637edff5c5ce1355a3b45f0fb7f4154 100644
--- a/src/main/java/net/minecraft/world/level/block/Block.java
+++ b/src/main/java/net/minecraft/world/level/block/Block.java
@@ -360,8 +360,13 @@ public class Block extends BlockBehaviour implements ItemLike {
     }
 
     public void popExperience(ServerLevel world, BlockPos pos, int size) {
+        // Paper start - add entity parameter
+        popExperience(world, pos, size, null);
+    }
+    public void popExperience(ServerLevel world, BlockPos pos, int size, net.minecraft.world.entity.Entity entity) {
+        // Paper end - add entity parameter
         if (world.getGameRules().getBoolean(GameRules.RULE_DOBLOCKDROPS)) {
-            ExperienceOrb.award(world, Vec3.atCenterOf(pos), size);
+            ExperienceOrb.award(world, Vec3.atCenterOf(pos), size, org.bukkit.entity.ExperienceOrb.SpawnReason.BLOCK_BREAK, entity); // Paper
         }
 
     }
diff --git a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
index c0dea02bb38dffb5003293c2d91e28e998da0a9c..e2a587ca5b732c62c4956e6f39ad795cd1411cc4 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
@@ -633,7 +633,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
         j = event.getExpToDrop();
         // CraftBukkit end
 
-        ExperienceOrb.award(worldserver, vec3d, j);
+        ExperienceOrb.award(worldserver, vec3d, j, org.bukkit.entity.ExperienceOrb.SpawnReason.FURNACE, entityhuman); // Paper
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
index 5b7bdf06ae6df1eeccb5a8da143745235f58e07e..9b2b0bbb1755b6be1c23cf56e29a68b0002fd755 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityTypes.java
@@ -372,7 +372,7 @@ public final class CraftEntityTypes {
             return item;
         }));
         register(new EntityTypeData<>(EntityType.EXPERIENCE_ORB, ExperienceOrb.class, CraftExperienceOrb::new,
-                spawnData -> new net.minecraft.world.entity.ExperienceOrb(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), 0)
+                spawnData -> new net.minecraft.world.entity.ExperienceOrb(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z(), 0, org.bukkit.entity.ExperienceOrb.SpawnReason.CUSTOM, null, null) // Paper
         ));
         register(new EntityTypeData<>(EntityType.AREA_EFFECT_CLOUD, AreaEffectCloud.class, CraftAreaEffectCloud::new, spawnData -> new net.minecraft.world.entity.AreaEffectCloud(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z())));
         register(new EntityTypeData<>(EntityType.EGG, Egg.class, CraftEgg::new, spawnData -> new ThrownEgg(spawnData.minecraftWorld(), spawnData.x(), spawnData.y(), spawnData.z())));
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftExperienceOrb.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftExperienceOrb.java
index 9231511af4cba747594000364f0b8fceeeab4819..5a7d314ec0562e472f5dc45924a7b24841cff126 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftExperienceOrb.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftExperienceOrb.java
@@ -18,6 +18,18 @@ public class CraftExperienceOrb extends CraftEntity implements ExperienceOrb {
         this.getHandle().value = value;
     }
 
+    // Paper start
+    public java.util.UUID getTriggerEntityId() {
+        return getHandle().triggerEntityId;
+    }
+    public java.util.UUID getSourceEntityId() {
+        return getHandle().sourceEntityId;
+    }
+    public SpawnReason getSpawnReason() {
+        return getHandle().spawnReason;
+    }
+    // Paper end
+
     @Override
     public net.minecraft.world.entity.ExperienceOrb getHandle() {
         return (net.minecraft.world.entity.ExperienceOrb) this.entity;