Initial commit

src/main/java/electroblob/wizardry/tileentity/TileEntityPlayerSave.java

@@ -0,0 +1,72 @@
+package electroblob.wizardry.tileentity;
+
+import java.lang.ref.WeakReference;
+import java.util.UUID;
+
+import electroblob.wizardry.util.WizardryUtilities;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.ITickable;
+
+public class TileEntityPlayerSave extends TileEntity implements ITickable {
+
+	/** The entity that created this construct */
+	private WeakReference<EntityLivingBase> caster;
+	
+	/** The UUID of the caster. Note that this is only for loading purposes; during normal updates
+	 * the actual entity instance is stored (so that getEntityByUUID is not called constantly),
+	 * so this will not always be synced (this is why it is private). */
+	private UUID casterUUID;
+	
+	public TileEntityPlayerSave(EntityLivingBase caster){
+		this.caster = new WeakReference<EntityLivingBase>(caster);
+	}
+	
+	public TileEntityPlayerSave(){
+		
+	}
+	
+	@Override
+	public void update(){
+		if(this.getCaster() == null && this.casterUUID != null){
+			Entity entity = WizardryUtilities.getEntityByUUID(worldObj, casterUUID);
+			if(entity instanceof EntityLivingBase){
+				this.caster = new WeakReference<EntityLivingBase>((EntityLivingBase)entity);
+			}
+		}
+	}
+	
+	@Override
+    public void readFromNBT(NBTTagCompound tagCompound) {
+        super.readFromNBT(tagCompound);
+        casterUUID = tagCompound.getUniqueId("casterUUID");
+    }
+
+    @Override
+    public NBTTagCompound writeToNBT(NBTTagCompound tagCompound) {
+    	
+        super.writeToNBT(tagCompound);
+        
+		if(this.getCaster() != null){
+        	tagCompound.setUniqueId("casterUUID", this.getCaster().getUniqueID());
+        }
+		
+		return tagCompound;
+    }
+    
+    /**
+	 * Returns the EntityLivingBase that created this construct, or null if it no longer exists. Cases where the
+	 * entity may no longer exist are: entity died or was deleted, mob despawned, player logged out, entity teleported
+	 * to another dimension, or this construct simply had no caster in the first place.
+	 */
+	public EntityLivingBase getCaster() {
+		return caster == null ? null : caster.get();
+	}
+	
+	public void setCaster(EntityLivingBase caster){
+		this.caster = new WeakReference<EntityLivingBase>(caster);
+	}
+
+}