PaperMC/paper-server/nms-patches/net/minecraft/world/entity/animal/EntityFox.patch

--- a/net/minecraft/world/entity/animal/EntityFox.java
+++ b/net/minecraft/world/entity/animal/EntityFox.java
@@ -502,7 +502,8 @@
     protected void b(EntityItem entityitem) {
         ItemStack itemstack = entityitem.getItemStack();
 
-        if (this.canPickup(itemstack)) {
+        if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(this, entityitem, itemstack.getCount() - 1, !this.canPickup(itemstack)).isCancelled()) { // CraftBukkit - call EntityPickupItemEvent
+            itemstack = entityitem.getItemStack(); // CraftBukkit - update ItemStack from event
             int i = itemstack.getCount();
 
             if (i > 1) {
@@ -857,6 +858,16 @@
                 if (entityplayer1 != null && entityplayer != entityplayer1) {
                     entityfox.b(entityplayer1.getUniqueID());
                 }
+                // CraftBukkit start - call EntityBreedEvent
+                entityfox.setAgeRaw(-24000);
+                entityfox.setPositionRotation(this.animal.locX(), this.animal.locY(), this.animal.locZ(), 0.0F, 0.0F);
+                int experience = this.animal.getRandom().nextInt(7) + 1;
+                org.bukkit.event.entity.EntityBreedEvent entityBreedEvent = org.bukkit.craftbukkit.event.CraftEventFactory.callEntityBreedEvent(entityfox, animal, partner, entityplayer, this.animal.breedItem, experience);
+                if (entityBreedEvent.isCancelled()) {
+                    return;
+                }
+                experience = entityBreedEvent.getExperience();
+                // CraftBukkit end
 
                 if (entityplayer2 != null) {
                     entityplayer2.a(StatisticList.ANIMALS_BRED);
@@ -867,12 +878,14 @@
                 this.partner.setAgeRaw(6000);
                 this.animal.resetLove();
                 this.partner.resetLove();
-                entityfox.setAgeRaw(-24000);
-                entityfox.setPositionRotation(this.animal.locX(), this.animal.locY(), this.animal.locZ(), 0.0F, 0.0F);
-                worldserver.addAllEntities(entityfox);
+                worldserver.addAllEntities(entityfox, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.BREEDING); // CraftBukkit - added SpawnReason
                 this.level.broadcastEntityEffect(this.animal, (byte) 18);
                 if (this.level.getGameRules().getBoolean(GameRules.RULE_DOMOBLOOT)) {
-                    this.level.addEntity(new EntityExperienceOrb(this.level, this.animal.locX(), this.animal.locY(), this.animal.locZ(), this.animal.getRandom().nextInt(7) + 1));
+                    // CraftBukkit start - use event experience
+                    if (experience > 0) {
+                        this.level.addEntity(new EntityExperienceOrb(this.level, this.animal.locX(), this.animal.locY(), this.animal.locZ(), experience));
+                    }
+                    // CraftBukkit end
                 }
 
             }
@@ -1258,13 +1271,18 @@
         }
 
         private void a(IBlockData iblockdata) {
-            CaveVines.harvest(iblockdata, EntityFox.this.level, this.blockPos);
+            CaveVines.harvest(iblockdata, EntityFox.this.level, this.blockPos, EntityFox.this); // CraftBukkit
         }
 
         private void b(IBlockData iblockdata) {
             int i = (Integer) iblockdata.get(BlockSweetBerryBush.AGE);
 
             iblockdata.set(BlockSweetBerryBush.AGE, 1);
+            // CraftBukkit start - call EntityChangeBlockEvent
+            if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(EntityFox.this, this.blockPos, iblockdata.set(BlockSweetBerryBush.AGE, 1)).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             int j = 1 + EntityFox.this.level.random.nextInt(2) + (i == 3 ? 1 : 0);
             ItemStack itemstack = EntityFox.this.getEquipment(EnumItemSlot.MAINHAND);
 
@@ -1420,7 +1438,7 @@
         private EntityLiving trustedLastHurt;
         private int timestamp;
 
-        public a(Class oclass, boolean flag, boolean flag1, @Nullable Predicate predicate) {
+        public a(Class oclass, boolean flag, boolean flag1, @Nullable Predicate<EntityLiving> predicate) { // CraftBukkit - decompile error
             super(EntityFox.this, oclass, 10, flag, flag1, predicate);
         }