Paper/nms-patches/EntityFishingHook.patch

--- a/net/minecraft/server/EntityFishingHook.java
+++ b/net/minecraft/server/EntityFishingHook.java
@@ -3,6 +3,12 @@
 import java.util.Arrays;
 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 List<PossibleFishingResult> d = Arrays.asList(new PossibleFishingResult[] { (new PossibleFishingResult(new ItemStack(Items.LEATHER_BOOTS), 10)).a(0.9F), new PossibleFishingResult(new ItemStack(Items.LEATHER), 10), new PossibleFishingResult(new ItemStack(Items.BONE), 10), new PossibleFishingResult(new ItemStack(Items.POTION), 10), new PossibleFishingResult(new ItemStack(Items.STRING), 5), (new PossibleFishingResult(new ItemStack(Items.FISHING_ROD), 2)).a(0.9F), new PossibleFishingResult(new ItemStack(Items.BOWL), 10), new PossibleFishingResult(new ItemStack(Items.STICK), 5), new PossibleFishingResult(new ItemStack(Items.DYE, 10, EnumColor.BLACK.getInvColorIndex()), 1), new PossibleFishingResult(new ItemStack(Blocks.TRIPWIRE_HOOK), 10), new PossibleFishingResult(new ItemStack(Items.ROTTEN_FLESH), 10)});
@@ -182,6 +188,7 @@
             }
 
             if (movingobjectposition != null) {
+                org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this); // Craftbukkit - Call event
                 if (movingobjectposition.entity != null) {
                     if (movingobjectposition.entity.damageEntity(DamageSource.projectile(this, this.owner), 0.0F)) {
                         this.hooked = movingobjectposition.entity;
@@ -381,6 +388,15 @@
             byte b0 = 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
+                
                 double d0 = this.owner.locX - this.locX;
                 double d1 = this.owner.locY - this.locY;
                 double d2 = this.owner.locZ - this.locZ;
@@ -393,6 +409,15 @@
                 b0 = 3;
             } else if (this.av > 0) {
                 EntityItem entityitem = new EntityItem(this.world, this.locX, this.locY, this.locZ, this.m());
+                // 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 d5 = this.owner.locX - this.locX;
                 double d6 = this.owner.locY - this.locY;
                 double d7 = this.owner.locZ - this.locZ;
@@ -403,14 +428,35 @@
                 entityitem.motY = d6 * d9 + (double) MathHelper.sqrt(d8) * 0.08D;
                 entityitem.motZ = d7 * d9;
                 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
                 b0 = 1;
             }
 
             if (this.as) {
+                // 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
                 b0 = 2;
             }
 
+            // CraftBukkit start
+            if (b0 == 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;
             return b0;