Fix mounted minecarts not persisting across world reloads (#979)

* Fix mounted minecarts not persisting across world reloads

Signed-off-by: Ayush Thoren <ayushthoren@gmail.com>

* Apply patch

---------

Signed-off-by: Ayush Thoren <ayushthoren@gmail.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/Minecraft.World/LevelChunk.cpp b/Minecraft.World/LevelChunk.cpp
index 29308e29..584e3df1 100644
--- a/Minecraft.World/LevelChunk.cpp
+++ b/Minecraft.World/LevelChunk.cpp
@@ -1222,6 +1222,30 @@ void LevelChunk::addEntity(shared_ptr<Entity> e)
 #endif
 }
 
+void LevelChunk::addRidingEntities(shared_ptr<Entity> rider, CompoundTag *riderTag)
+{
+#ifdef _LARGE_WORLDS #This shouldnt be called when we dont have large worlds enabled
+    CompoundTag *mountTag = riderTag;
+    shared_ptr<Entity> ridingEntity = rider;
+
+    while (mountTag != NULL && mountTag->contains(Entity::RIDING_TAG))
+    {
+        CompoundTag *nextMountTag = mountTag->getCompound(Entity::RIDING_TAG);
+        shared_ptr<Entity> mount = EntityIO::loadStatic(nextMountTag, level);
+        if (mount == NULL)
+        {
+            break;
+        }
+
+        mount->onLoadedFromSave();
+        addEntity(mount);
+        ridingEntity->ride(mount);
+
+        ridingEntity = mount;
+        mountTag = nextMountTag;
+    }
+#endif
+};
 
 void LevelChunk::removeEntity(shared_ptr<Entity> e)
 {
@@ -1431,6 +1455,7 @@ void LevelChunk::load()
 					{
 						ent->onLoadedFromSave();
 						addEntity(ent);
+						addRidingEntities(ent, teTag);
 					}
 				}
 			}