fix save corruption

src/main/scala/codechicken/multipart/BlockMultipart.scala

@@ -12,6 +12,7 @@ import net.minecraft.util.Vec3
 import net.minecraft.util.MovingObjectPosition
 import codechicken.lib.raytracer.RayTracer
 import net.minecraft.entity.player.EntityPlayer
+
 import java.util.Random
 import java.util.ArrayList
 import net.minecraft.item.ItemStack
@@ -21,6 +22,9 @@ import net.minecraft.client.renderer.texture.IIconRegister
 import codechicken.lib.render.TextureUtils
 import net.minecraft.world.IBlockAccess
 import codechicken.lib.raytracer.ExtendedMOP
+import codechicken.multipart.handler.MultipartSaveLoad.TileNBTContainer
+import net.minecraft.tileentity.TileEntity
+
 import scala.collection.JavaConversions._
 
 object BlockMultipart {
@@ -73,6 +77,8 @@ class BlockMultipart extends Block(Material.rock) {
 
   override def hasTileEntity(meta: Int = 0) = true
 
+  override def createTileEntity(world: World, metadata: Int) = if (!world.isRemote) new TileNBTContainer else null
+
   override def isBlockSolid(
       world: IBlockAccess,
       x: Int,

src/main/scala/codechicken/multipart/handler/MultipartSaveLoad.scala

@@ -2,14 +2,18 @@ package codechicken.multipart.handler
 
 import net.minecraft.tileentity.TileEntity
 import net.minecraft.nbt.NBTTagCompound
-import java.util.Map
+
+import java.util.{Collections, Map}
 import net.minecraft.world.chunk.Chunk
 import net.minecraft.world.ChunkPosition
 import codechicken.multipart.{MultipartHelper, TileMultipart}
 import codechicken.lib.asm.ObfMapping
+import codechicken.multipart
 import net.minecraft.world.World
+
 import scala.collection.mutable
 import codechicken.multipart.MultipartHelper.IPartTileConverter
+
 import scala.collection.JavaConversions._
 
 /** Hack due to lack of TileEntityLoadEvent in forge
@@ -19,12 +23,48 @@ object MultipartSaveLoad {
   var loadingWorld: World = _
 
   class TileNBTContainer extends TileEntity {
+    var ticks = 0
+    var failed = false
+    var loaded = false
     var tag: NBTTagCompound = _
 
     override def readFromNBT(t: NBTTagCompound) {
       super.readFromNBT(t)
       tag = t
     }
+
+    override def updateEntity(): Unit = {
+      if (failed || loaded) {
+        return
+      }
+
+      if (tag == null) {
+        if (ticks >= 600) {
+          failed = true
+          multipart.logger.warn(s"SavedMultipart at ($xCoord, $yCoord, $zCoord) still exists after $ticks!")
+          worldObj.removeTileEntity(xCoord, yCoord, zCoord)
+        }
+        ticks += 1
+        return
+      }
+
+      if (worldObj.isRemote)
+        return
+
+      val newTile = TileMultipart.createFromNBT(tag)
+      if (newTile == null) {
+        worldObj.removeTileEntity(xCoord, yCoord, zCoord)
+        return
+      }
+
+      newTile.validate()
+      worldObj.setTileEntity(xCoord, yCoord, zCoord, newTile)
+      newTile.notifyTileChange()
+      val chunk = worldObj.getChunkFromBlockCoords(xCoord, zCoord)
+      val packet = MultipartSPH.getDescPacket(chunk, Collections.singleton[TileEntity](newTile).iterator)
+      packet.sendToChunk(worldObj, chunk.xPosition, chunk.zPosition)
+      loaded = true
+    }
   }
 
   def hookLoader() {