Paper/Spigot-Server-Patches/0591-Avoid-error-bubbling-up-when-item-stack-is-empty-in-.patch
Riley Park 4e958e229f
We're going on an Adventure! (#4842)
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
Co-authored-by: zml <zml@stellardrift.ca>
Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com>
2021-02-21 20:45:33 +01:00

47 lines
3.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Toon Schoenmakers <nighteyes1993@gmail.com>
Date: Fri, 23 Oct 2020 15:01:44 +0200
Subject: [PATCH] Avoid error bubbling up when item stack is empty in fishing
loot
This can realistically only happen if there's custom loot active on fishing
which can return 0 items. This would disconnect the player who's fishing.
diff --git a/src/main/java/net/minecraft/server/EntityFishingHook.java b/src/main/java/net/minecraft/server/EntityFishingHook.java
index 723cd60254111579b157684dc82311af5cf9fd13..e97c7794e86c0518bcec0a0370bffbeab20e2623 100644
--- a/src/main/java/net/minecraft/server/EntityFishingHook.java
+++ b/src/main/java/net/minecraft/server/EntityFishingHook.java
@@ -445,9 +445,15 @@ public class EntityFishingHook extends IProjectile {
while (iterator.hasNext()) {
ItemStack itemstack1 = (ItemStack) iterator.next();
- EntityItem entityitem = new EntityItem(this.world, this.locX(), this.locY(), this.locZ(), itemstack1);
+ // Paper start, new EntityItem would throw if for whatever reason (mostly shitty datapacks) the itemstack1 turns out to be empty
+ // if the item stack is empty we instead just have our entityitem as null
+ EntityItem entityitem = null;
+ if (!itemstack1.isEmpty()) {
+ entityitem = new EntityItem(this.world, this.locX(), this.locY(), this.locZ(), itemstack1);
+ }
+ // Paper end
// CraftBukkit start
- PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) entityhuman.getBukkitEntity(), entityitem.getBukkitEntity(), (FishHook) this.getBukkitEntity(), PlayerFishEvent.State.CAUGHT_FISH);
+ PlayerFishEvent playerFishEvent = new PlayerFishEvent((Player) entityhuman.getBukkitEntity(), entityitem != null ? entityitem.getBukkitEntity() : null, (FishHook) this.getBukkitEntity(), PlayerFishEvent.State.CAUGHT_FISH); // Paper - entityitem may be null
playerFishEvent.setExpToDrop(this.random.nextInt(6) + 1);
this.world.getServer().getPluginManager().callEvent(playerFishEvent);
@@ -460,8 +466,12 @@ public class EntityFishingHook extends IProjectile {
double d2 = entityhuman.locZ() - this.locZ();
double d3 = 0.1D;
- entityitem.setMot(d0 * 0.1D, d1 * 0.1D + Math.sqrt(Math.sqrt(d0 * d0 + d1 * d1 + d2 * d2)) * 0.08D, d2 * 0.1D);
- this.world.addEntity(entityitem);
+ // Paper start, entity item can be null, so we need to check against this
+ if (entityitem != null) {
+ entityitem.setMot(d0 * 0.1D, d1 * 0.1D + Math.sqrt(Math.sqrt(d0 * d0 + d1 * d1 + d2 * d2)) * 0.08D, d2 * 0.1D);
+ this.world.addEntity(entityitem);
+ }
+ // Paper end
// CraftBukkit start - this.random.nextInt(6) + 1 -> playerFishEvent.getExpToDrop()
if (playerFishEvent.getExpToDrop() > 0) {
entityhuman.world.addEntity(new EntityExperienceOrb(entityhuman.world, entityhuman.locX(), entityhuman.locY() + 0.5D, entityhuman.locZ() + 0.5D, playerFishEvent.getExpToDrop(), org.bukkit.entity.ExperienceOrb.SpawnReason.FISHING, this.getOwner(), this)); // Paper