Paper/nms-patches/EntityFishingHook.patch

--- a/net/minecraft/server/EntityFishingHook.java
+++ b/net/minecraft/server/EntityFishingHook.java
@@ -3,6 +3,12 @@
 import java.util.Iterator;
 import java.util.List;
 
+// CraftBukkit start
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Fish;
+import org.bukkit.event.player.PlayerFishEvent;
+// CraftBukkit end
+
 public class EntityFishingHook extends Entity {
 
     private static final DataWatcherObject<Integer> c = DataWatcher.a(EntityFishingHook.class, DataWatcherRegistry.b);
@@ -193,6 +199,7 @@
                 }
 
                 if (movingobjectposition != null) {
+                    org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this); // Craftbukkit - Call event
                     if (movingobjectposition.entity != null) {
                         this.hooked = movingobjectposition.entity;
                         this.getDataWatcher().set(EntityFishingHook.c, Integer.valueOf(this.hooked.getId() + 1));
@@ -266,6 +273,10 @@
                         if (this.au <= 0) {
                             this.av = 0;
                             this.aw = 0;
+                            // CraftBukkit start
+                            PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), null, (Fish) this.getBukkitEntity(), PlayerFishEvent.State.FAILED_ATTEMPT);
+                            this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+                            // CraftBukkit end
                         }
                     } else {
                         double d10;
@@ -278,6 +289,13 @@
                         if (this.aw > 0) {
                             this.aw -= l;
                             if (this.aw <= 0) {
+                                // CraftBukkit start
+                                PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), null, (Fish) this.getBukkitEntity(), PlayerFishEvent.State.BITE);
+                                this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+                                if (playerFishEvent.isCancelled()) {
+                                    return;
+                                }
+                                // CraftBukkit end
                                 this.motY -= 0.20000000298023224D;
                                 this.a(SoundEffects.G, 0.25F, 1.0F + (this.random.nextFloat() - this.random.nextFloat()) * 0.4F);
                                 f2 = (float) MathHelper.floor(this.getBoundingBox().b);
@@ -391,6 +409,14 @@
                 this.k();
                 this.world.broadcastEntityEffect(this, (byte) 31);
                 i = this.hooked instanceof EntityItem ? 3 : 5;
+                // CraftBukkit start
+                PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), this.hooked.getBukkitEntity(), (Fish) this.getBukkitEntity(), PlayerFishEvent.State.CAUGHT_ENTITY);
+                this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+
+                if (playerFishEvent.isCancelled()) {
+                    return 0;
+                }
+                // CraftBukkit end
             } else if (this.au > 0) {
                 LootTableInfo.a loottableinfo_a = new LootTableInfo.a((WorldServer) this.world);
 
@@ -400,6 +426,15 @@
                 while (iterator.hasNext()) {
                     ItemStack itemstack = (ItemStack) iterator.next();
                     EntityItem entityitem = new EntityItem(this.world, this.locX, this.locY, this.locZ, itemstack);
+                    // CraftBukkit start
+                    PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), entityitem.getBukkitEntity(), (Fish) this.getBukkitEntity(), PlayerFishEvent.State.CAUGHT_FISH);
+                    playerFishEvent.setExpToDrop(this.random.nextInt(6) + 1);
+                    this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+
+                    if (playerFishEvent.isCancelled()) {
+                        return 0;
+                    }
+                    // CraftBukkit end
                     double d0 = this.owner.locX - this.locX;
                     double d1 = this.owner.locY - this.locY;
                     double d2 = this.owner.locZ - this.locZ;
@@ -410,15 +445,36 @@
                     entityitem.motY = d1 * d4 + (double) MathHelper.sqrt(d3) * 0.08D;
                     entityitem.motZ = d2 * d4;
                     this.world.addEntity(entityitem);
-                    this.owner.world.addEntity(new EntityExperienceOrb(this.owner.world, this.owner.locX, this.owner.locY + 0.5D, this.owner.locZ + 0.5D, this.random.nextInt(6) + 1));
+                    // CraftBukkit start - this.random.nextInt(6) + 1 -> playerFishEvent.getExpToDrop()
+                    if (playerFishEvent.getExpToDrop() > 0) {
+                        this.owner.world.addEntity(new EntityExperienceOrb(this.owner.world, this.owner.locX, this.owner.locY + 0.5D, this.owner.locZ + 0.5D, playerFishEvent.getExpToDrop()));
+                    }
+                    // CraftBukkit end                
                 }
 
                 i = 1;
             }
 
             if (this.isInGround) {
+                // CraftBukkit start
+                PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), null, (Fish) this.getBukkitEntity(), PlayerFishEvent.State.IN_GROUND);
+                this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+
+                if (playerFishEvent.isCancelled()) {
+                    return 0;
+                }
+                // CraftBukkit end
                 i = 2;
             }
+            // CraftBukkit start
+            if (i == 0) {
+                PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) this.owner.getBukkitEntity(), null, (Fish) this.getBukkitEntity(), PlayerFishEvent.State.FAILED_ATTEMPT);
+                this.world.getServer().getPluginManager().callEvent(playerFishEvent);
+                if (playerFishEvent.isCancelled()) {
+                    return 0;
+                }
+            }
+            // CraftBukkit end
 
             this.die();
             this.owner.hookedFish = null;