From 4a085c9526b5c7c5afb092536bdb925ebc05b405 Mon Sep 17 00:00:00 2001
From: Saku Laesvuori <roskahiiri@gmail.com>
Date: Sat, 3 Apr 2021 20:12:24 +0300
Subject: [PATCH] Fix passive mobs despawning

According to the wiki most passive mobs do not despawn. The ones that do
have already been explicity marked as despawning.

<https://minecraft.fandom.com/wiki/Spawn#Despawning>
<https://minecraft.fandom.com/wiki/Mob#Despawning>
---
 mods/ENTITIES/mcl_mobs/api.lua | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua
index 0a038ba134..6a8646bd5f 100644
--- a/mods/ENTITIES/mcl_mobs/api.lua
+++ b/mods/ENTITIES/mcl_mobs/api.lua
@@ -3741,6 +3741,8 @@ function mobs:register_mob(name, def)
 local can_despawn
 if def.can_despawn ~= nil then
 	can_despawn = def.can_despawn
+elseif def.spawn_class == "passive" then
+	can_despawn = false
 else
 	can_despawn = true
 end