Paper/nms-patches/EntityFishingHook.patch

--- a/net/minecraft/server/EntityFishingHook.java
+++ b/net/minecraft/server/EntityFishingHook.java
@@ -2,6 +2,11 @@
 
 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 {
 
@@ -251,6 +256,7 @@
         }
 
         if (movingobjectposition != null && movingobjectposition.type != MovingObjectPosition.EnumMovingObjectType.MISS) {
+            org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this); // Craftbukkit - Call event
             if (movingobjectposition.type == MovingObjectPosition.EnumMovingObjectType.ENTITY) {
                 this.hooked = movingobjectposition.entity;
                 this.s();
@@ -283,6 +289,10 @@
             if (this.g <= 0) {
                 this.h = 0;
                 this.at = 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 {
                 this.motY -= 0.2D * (double) this.random.nextFloat() * (double) this.random.nextFloat();
             }
@@ -318,6 +328,13 @@
                         worldserver.a(EnumParticle.WATER_WAKE, d0, d1, d2, 0, (double) (-f4), 0.01D, (double) f3, 1.0D, new int[0]);
                     }
                 } else {
+                    // 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 = (double) (-0.4F * MathHelper.a(this.random, 0.6F, 1.0F));
                     this.a(SoundEffects.H, 0.25F, 1.0F + (this.random.nextFloat() - this.random.nextFloat()) * 0.4F);
                     double d3 = this.getBoundingBox().b + 0.5D;
@@ -374,6 +391,14 @@
             int i = 0;
 
             if (this.hooked != null) {
+                // 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
                 this.k();
                 this.world.broadcastEntityEffect(this, (byte) 31);
                 i = this.hooked instanceof EntityItem ? 3 : 5;
@@ -386,6 +411,15 @@
                 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;
@@ -396,15 +430,36 @@
                     entityitem.motY = d1 * 0.1D + (double) MathHelper.sqrt(d3) * 0.08D;
                     entityitem.motZ = d2 * 0.1D;
                     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();
             return i;