Merge branch 'master' of https://github.com/MightyPirates/OpenComputers into MC1.7

Conflicts:
	src/main/java/li/cil/oc/api/network/SidedEnvironment.java
	src/main/scala/li/cil/oc/OpenComputers.scala
	src/main/scala/li/cil/oc/common/ConnectionHandler.scala
	src/main/scala/li/cil/oc/common/SaveHandler.scala

build.gradle

@@ -36,4 +36,5 @@ version = "MC${config.minecraft.version}-${project.version}"
 
 apply from: 'gradle/forge.gradle'
 apply from: 'gradle/artifact.gradle'
+apply from: 'gradle/sign.gradle'
 apply from: 'gradle/release.gradle'

gradle/artifact.gradle

@@ -6,6 +6,10 @@ jar {
     }
 }
 
+javadoc {
+    include 'li/cil/oc/api/**'
+}
+
 // because the normal default jar task has been modified to be obfuscated
 task deobfJar(type: Jar) {
     from sourceSets.main.output
@@ -22,7 +26,13 @@ task apiJar(type: Jar) {
     include 'li/cil/oc/api/**'
 }
 
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    from 'build/docs/javadoc'
+    classifier 'javadoc'
+}
+
 artifacts {
     archives deobfJar
     archives apiJar
+    archives javadocJar
 }

gradle/forge.gradle

@@ -15,6 +15,10 @@ compileScala {
 
 minecraft {
     version = "${config.minecraft.version}-${config.forge.version}"
+
+    replaceIn "li/cil/oc/OpenComputers.scala"
+    if (project.hasProperty("keystore_fingerprint"))
+        replace "@FINGERPRINT@", keystore_fingerprint
 }
 
 processResources {

gradle/sign.gradle

@@ -0,0 +1,37 @@
+// Based on the code from TinkersConstruct and Cazzar's repo.
+// Thanks ProgWML6 and Cazzar!
+
+// verify the properties exist... or initialize.
+if (!project.hasProperty("keystore_location")) // keystore stuff
+    ext.keystore_location = ""
+
+if (!project.hasProperty("keystore_alias")) // keystore stuff
+    ext.keystore_alias = ""
+
+if (!project.hasProperty("keystore_password")) // keystore stuff
+    ext.keystore_password = ""
+
+task("signJar", dependsOn: "reobf") {
+    inputs.file jar.getArchivePath()
+    inputs.file keystore_location
+    inputs.property "keystore_alias", keystore_alias
+    inputs.property "keystore_password", keystore_password
+    outputs.file jar.getArchivePath()
+
+    // only sign if the keystore exists
+    onlyIf {
+        return !keystore_location.empty
+    }
+
+    // the actual action - sign the jar.
+    doLast {
+        ant.signjar(
+            destDir: jar.destinationDir,
+            jar: jar.getArchivePath(),
+            keystore: keystore_location,
+            alias: keystore_alias,
+            storepass: keystore_password,
+            keypass: keystore_password
+        )
+    }
+}

src/main/java/li/cil/oc/api/machine/Machine.java

@@ -1,6 +1,5 @@
 package li.cil.oc.api.machine;
 
-import li.cil.oc.api.fs.FileSystem;
 import li.cil.oc.api.network.Callback;
 import li.cil.oc.api.network.Context;
 import li.cil.oc.api.network.ManagedEnvironment;
@@ -79,7 +78,7 @@ public interface Machine extends ManagedEnvironment, Context {
      * The address of the file system that holds the machine's read only data
      * (rom). This file system is populated based on the backing resource file
      * systems specified for the machines architecture via
-     * {@link li.cil.oc.api.Machine#addRomResource(Class, FileSystem, String)}.
+     * {@link li.cil.oc.api.Machine#addRomResource(Class, java.util.concurrent.Callable, String)}.
      * This may return <tt>null</tt> if the creation of the file system
      * failed.
      * <p/>

src/main/java/li/cil/oc/api/network/Network.java

@@ -178,7 +178,7 @@ public interface Network {
      * @param name   the name of the message.
      * @param data   the message to send.
      * @throws IllegalArgumentException if the source node is not in this network.
-     * @see `neighbors`
+     * @see #neighbors(Node)
      */
     void sendToNeighbors(Node source, String name, Object... data);
 
@@ -196,7 +196,7 @@ public interface Network {
      * @param source the node that sends the message.
      * @param data   the message to send.
      * @throws IllegalArgumentException if the source node is not in this network.
-     * @see {@link #nodes(Node)}
+     * @see #nodes(Node)
      */
     void sendToReachable(Node source, String name, Object... data);
 
@@ -218,8 +218,8 @@ public interface Network {
      * @param source the node that sends the message.
      * @param data   the message to send.
      * @throws IllegalArgumentException if the source node is not in this network.
-     * @see {@link #nodes(Node)}
+     * @see #nodes(Node)
-     * @see {@link Component#canBeSeenFrom(Node)}
+     * @see Component#canBeSeenFrom(Node)
      */
     void sendToVisible(Node source, String name, Object... data);
 }

src/main/java/li/cil/oc/api/network/SidedEnvironment.java

@@ -2,6 +2,7 @@ package li.cil.oc.api.network;
 
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
+import net.minecraft.tileentity.TileEntity;
 import net.minecraftforge.common.util.ForgeDirection;
 
 /**
@@ -11,9 +12,9 @@ import net.minecraftforge.common.util.ForgeDirection;
  * <p/>
  * This interface is intended to be used on tile entities that are environments.
  * It is used to determine which neighbors a tile entity can connect to when
- * calling {@link li.cil.oc.api.Network#joinOrCreateNetwork}. It is used by the
+ * calling {@link li.cil.oc.api.Network#joinOrCreateNetwork(TileEntity)}. It is
- * keyboard to only interface with the side on which it is attached, as well as
+ * used by the keyboard to only interface with the side on which it is attached,
- * the router to offer a different node for each side.
+ * as well as the router to offer a different node for each side.
  */
 public interface SidedEnvironment {
     /**

src/main/java/org/luaj/vm3/Globals.java

@@ -80,7 +80,7 @@ import org.luaj.vm3.lib.ResourceFinder;
  * <li>{@link STDIN} Current value for standard input in the laaded IoLib, if any.
  * <li>{@link STDOUT} Current value for standard output in the loaded IoLib, if any.
  * <li>{@link STDERR} Current value for standard error in the loaded IoLib, if any.
- * <li>{@link FINDER} Current loaded {@link ResourceFinder}, if any.
+ * <li>{@link finder} Current loaded {@link ResourceFinder}, if any.
  * <li>{@link compiler} Current loaded {@link Compiler}, if any.
  * <li>{@link undumper} Current loaded {@link Undumper}, if any.
  * <li>{@link loader} Current loaded {@link Loader}, if any.
@@ -122,7 +122,7 @@ public class Globals extends LuaTable {
 	public PrintStream STDERR = System.err;
 
 	/** The installed ResourceFinder for looking files by name. */
-	public ResourceFinder FINDER;
+	public ResourceFinder finder;
 	
 	/** The currently running thread.  Should not be changed by non-library code. */
 	public LuaThread running = new LuaThread(this);
@@ -178,7 +178,7 @@ public class Globals extends LuaTable {
 	 */
 	public LuaValue loadfile(String filename) {
 		try {
-			return load(FINDER.findResource(filename), "@"+filename, "bt", this);
+			return load(finder.findResource(filename), "@"+filename, "bt", this);
 		} catch (Exception e) {
 			return error("load "+filename+": "+e);
 		}

src/main/java/org/luaj/vm3/LuaString.java

@@ -387,6 +387,12 @@ public class LuaString extends LuaValue {
 		return this;
 	}
 	
+	/** Take a substring using Java zero-based indexes for begin and end or range.
+	 * @param beginIndex  The zero-based index of the first character to include.
+	 * @param endIndex  The zero-based index of position after the last character.
+	 * @return LuaString which is a substring whose first character is at offset 
+	 * beginIndex and extending for (endIndex - beginIndex ) characters.
+	 */
 	public LuaString substring( int beginIndex, int endIndex ) {
 		return valueOf( m_bytes, m_offset + beginIndex, endIndex - beginIndex );
 	}

src/main/java/org/luaj/vm3/lib/BaseLib.java

@@ -38,7 +38,7 @@ import org.luaj.vm3.Varargs;
  * <p>
  * This contains all library functions listed as "basic functions" in the lua documentation for JME. 
  * The functions dofile and loadfile use the 
- * {@link #FINDER} instance to find resource files.
+ * {@link #finder} instance to find resource files.
  * Since JME has no file system by default, {@link BaseLib} implements 
  * {@link ResourceFinder} using {@link Class#getResource(String)}, 
  * which is the closest equivalent on JME.     
@@ -69,7 +69,7 @@ import org.luaj.vm3.Varargs;
  * This is a direct port of the corresponding library in C.
  * @see JseBaseLib
  * @see ResourceFinder
- * @see #FINDER
+ * @see #finder
  * @see LibFunction
  * @see JsePlatform
  * @see JmePlatform
@@ -81,7 +81,7 @@ public class BaseLib extends TwoArgFunction implements ResourceFinder {
 	
 	public LuaValue call(LuaValue modname, LuaValue env) {
 		globals = env.checkglobals();
-		globals.FINDER = this;
+		globals.finder = this;
 		globals.baselib = this;
 		env.set( "_G", env );
 		env.set( "_VERSION", Lua._VERSION );
@@ -424,7 +424,7 @@ public class BaseLib extends TwoArgFunction implements ResourceFinder {
 	 * @return Varargs containing chunk, or NIL,error-text on error
 	 */
 	public Varargs loadFile(String filename, String mode, LuaValue env) {
-		InputStream is = globals.FINDER.findResource(filename);
+		InputStream is = globals.finder.findResource(filename);
 		if ( is == null )
 			return varargsOf(NIL, valueOf("cannot open "+filename+": No such file or directory"));
 		try {

src/main/java/org/luaj/vm3/lib/DebugLib.java

@@ -72,8 +72,12 @@ import org.luaj.vm3.Varargs;
  * @see <a href="http://www.lua.org/manual/5.2/manual.html#6.10">Lua 5.2 Debug Lib Reference</a>
  */
 public class DebugLib extends TwoArgFunction {
-	public static final boolean CALLS = (null != System.getProperty("CALLS"));
+	public static boolean CALLS;
-	public static final boolean TRACE = (null != System.getProperty("TRACE"));
+	public static boolean TRACE;
+	static {
+		try { CALLS = (null != System.getProperty("CALLS")); } catch (Exception e) {}
+		try { TRACE = (null != System.getProperty("TRACE")); } catch (Exception e) {}
+	}
 	
 	private static final LuaString LUA             = valueOf("Lua");  
 	private static final LuaString QMARK           = valueOf("?");  

src/main/java/org/luaj/vm3/lib/PackageLib.java

@@ -81,8 +81,13 @@ public class PackageLib extends TwoArgFunction {
 
 	/** The default value to use for package.path.  This can be set with the system property
 	 * <code>"luaj.package.path"</code>, and is <code>"?.lua"</code> by default. */
-	public static String DEFAULT_LUA_PATH = System.getProperty("luaj.package.path");
+	public static String DEFAULT_LUA_PATH;
 	static {
+		try {
+			DEFAULT_LUA_PATH = System.getProperty("luaj.package.path");
+		} catch (Exception e) {
+			System.out.println(e.toString());
+		}
 		if (DEFAULT_LUA_PATH == null)
 			DEFAULT_LUA_PATH = "?.lua";
 	}
@@ -294,7 +299,7 @@ public class PackageLib extends TwoArgFunction {
 				}
 				
 				// try opening the file
-				InputStream is = globals.FINDER.findResource(filename);
+				InputStream is = globals.finder.findResource(filename);
 				if (is != null) {
 					try { is.close(); } catch ( java.io.IOException ioe ) {}
 					return valueOf(filename);

src/main/java/org/luaj/vm3/lib/ResourceFinder.java

@@ -31,13 +31,13 @@ import java.io.InputStream;
  * for both the Jme and Jse platforms. 
  * <p>
  * The Jme version of base lib {@link BaseLib} 
- * implements {@link BaseLib#FINDER} via {@link Class#getResourceAsStream(String)}, 
+ * implements {@link Globals#finder} via {@link Class#getResourceAsStream(String)}, 
  * while the Jse version {@link JseBaseLib} implements it using {@link java.io.File#File(String)}.
  * <p>
  * The io library does not use this API for file manipulation.
  * <p>
  * @see BaseLib
- * @see BaseLib#FINDER
+ * @see Globals#finder
  * @see JseBaseLib
  * @see JmePlatform
  * @see JsePlatform 

src/main/java/org/luaj/vm3/lib/StringLib.java

@@ -1155,19 +1155,20 @@ public class StringLib extends TwoArgFunction {
 			if ( poff == plen || poff + 1 == plen ) {
 				error( "unbalanced pattern" );
 			}
-			if ( soff >= s.length() || s.luaByte( soff ) != p.luaByte( poff ) )
+			final int slen = s.length();
+			if ( soff >= slen )
 				return -1;
-			else {
+			final int b = p.luaByte( poff );
-				int b = p.luaByte( poff );
+			if ( s.luaByte( soff ) != b )
-				int e = p.luaByte( poff + 1 );
+				return -1;
+			final int e = p.luaByte( poff + 1 );
 			int cont = 1;
-				while ( ++soff < s.length() ) {
+			while ( ++soff < slen ) {
 				if ( s.luaByte( soff ) == e ) {
 					if ( --cont == 0 ) return soff + 1;
 				}
 				else if ( s.luaByte( soff ) == b ) cont++;
 			}
-			}
 			return -1;
 		}
 	}

src/main/java/org/luaj/vm3/lib/jse/JseBaseLib.java

@@ -33,11 +33,11 @@ import org.luaj.vm3.lib.ResourceFinder;
 
 /** 
  * Subclass of {@link BaseLib} and {@link LibFunction} which implements the lua basic library functions
- * and provides a directory based {@link ResourceFinder} as the {@link #FINDER}. 
+ * and provides a directory based {@link ResourceFinder} as the {@link #finder}. 
  * <p>
  * Since JME has no file system by default, {@link BaseLib} implements 
  * {@link ResourceFinder} using {@link Class#getResource(String)}. 
- * The {@link JseBaseLib} implements {@link FINDER} by scanning the current directory
+ * The {@link JseBaseLib} implements {@link finder} by scanning the current directory
  * first, then falling back to   {@link Class#getResource(String)} if that fails.
  * Otherwise, the behavior is the same as that of {@link BaseLib}.  
  * <p>  
@@ -62,7 +62,7 @@ import org.luaj.vm3.lib.ResourceFinder;
  * @see Globals
  * @see BaseLib
  * @see ResourceFinder
- * @see {@link Globals.FINDER}
+ * @see {@link Globals.finder}
  * @see LibFunction
  * @see JsePlatform
  * @see org.luaj.vm3.lib.jme.JmePlatform

src/main/java/org/luaj/vm3/lib/jse/LuajavaLib.java

@@ -109,7 +109,7 @@ public class LuajavaLib extends VarArgFunction {
 				// LuaValue modname = args.arg1();
 				LuaValue env = args.arg(2);
 				LuaTable t = new LuaTable();
-				bind( t, LuajavaLib.class, NAMES, BINDCLASS );
+				bind( t, this.getClass(), NAMES, BINDCLASS );
 				env.set("luajava", t);
 				env.get("package").get("loaded").set("luajava", t);
 				return t;

src/main/java/org/luaj/vm3/script/LuaScriptEngine.java

@@ -95,6 +95,21 @@ public class LuaScriptEngine extends AbstractScriptEngine implements ScriptEngin
 		}
 	}
 
+	@Override
+	public Object eval(Reader reader, Bindings bindings) throws ScriptException {
+		return ((LuajCompiledScript) compile(reader)).eval(context.globals, bindings);
+	}
+
+	@Override
+	public Object eval(String script, Bindings bindings) throws ScriptException {
+		return eval(new StringReader(script), bindings);
+	}
+
+	@Override
+	protected ScriptContext getScriptContext(Bindings nn) {
+		throw new IllegalStateException("LuajScriptEngine should not be allocating contexts.");
+	}
+
 	@Override
 	public Bindings createBindings() {
 		return new SimpleBindings();
@@ -109,7 +124,7 @@ public class LuaScriptEngine extends AbstractScriptEngine implements ScriptEngin
 	@Override
 	public Object eval(Reader reader, ScriptContext context)
 			throws ScriptException {
-        return compile(reader).eval();
+        return compile(reader).eval(context);
 	}
 
 	@Override
@@ -142,7 +157,7 @@ public class LuaScriptEngine extends AbstractScriptEngine implements ScriptEngin
 	    	return eval(((LuajContext) context).globals, context.getBindings(ScriptContext.ENGINE_SCOPE));
 		}
 	    
-	    private Object eval(Globals g, Bindings b) throws ScriptException {
+	    Object eval(Globals g, Bindings b) throws ScriptException {
 	    	g.setmetatable(new BindingsMetatable(b));
 			LuaFunction f = function;
 			if (f.isclosure())

src/main/java/org/luaj/vm3/script/LuajContext.java

@@ -103,7 +103,7 @@ public class LuajContext extends SimpleScriptContext implements ScriptContext {
 	@Override
 	public void setWriter(Writer writer) {
 		globals.STDOUT = writer != null?
-				new PrintStream(new WriterOutputStream(writer)):
+				new PrintStream(new WriterOutputStream(writer), true):
 				stdout;
 	}
 
@@ -113,7 +113,19 @@ public class LuajContext extends SimpleScriptContext implements ScriptContext {
 			this.w = w;
 		}
 		public void write(int b) throws IOException {
-			w.write(b);
+			w.write(new String(new byte[] {(byte)b}));
+		}
+		public void write(byte[] b, int o, int l) throws IOException {
+			w.write(new String(b, o, l));
+		}
+		public void write(byte[] b) throws IOException {
+			w.write(new String(b));
+		}
+		public void close() throws IOException {
+			w.close();
+		}
+		public void flush() throws IOException {
+			w.flush();
 		}
 	}
 	

src/main/resources/assets/opencomputers/lang/de_DE.lang

@@ -88,6 +88,7 @@ oc:gui.Analyzer.StoredEnergy=§6Gespeicherte Energie§f: %s
 oc:gui.Analyzer.TotalEnergy=§6Insgesamt gespeicherte Energie§f: %s
 oc:gui.Analyzer.Users=§6Benutzer§f: %s
 oc:gui.Chat.NewVersion=Eine neue Version ist verfügbar: %s
+oc:gui.Chat.WarningFingerprint=§cWARNUNG§f - ungültige Signatur! Sollte §a'%s'§f sein, aber war §e'%s'§f. Falls du kein Modder bist und die "deobfuscated"-Version des Mods benutzt, solltest du OpenComputers erneut herunterladen, da die JAR die du benutzt vermutlich modifiziert wurde.
 oc:gui.Chat.WarningLuaFallback=Die native Lua-Implementierung ist nicht verfügbar. Computer können ihren Ausführungszustand nicht speichern. Sie werden automatisch neu starten, sobald ein Chunk neu geladen wird.
 oc:gui.Chat.WarningPower=Es ist kein unterstützter, Strom erzeugender Mod verfügbar. Computer, Bildschirme und alle anderen Komponenten werden §lkeine§f Energie benötigen. Installiere einen der folgenden Mods, um Stromnutzung zu ermöglichen: BuildCraft, IndustrialCraft2, Thermal Expansion oder Universal Electricity. Deaktiviere Stromverbrauch in der Konfiguration, um diese Warnung zu unterdrücken.
 oc:gui.Chat.WarningProjectRed=Die verwendete Version von Project: Red ist nicht mit OpenComputers kompatibel. Aktualisiere bitte deine Version von Project: Red.

src/main/resources/assets/opencomputers/lang/en_US.lang

@@ -88,6 +88,7 @@ oc:gui.Analyzer.StoredEnergy=§6Stored energy§f: %s
 oc:gui.Analyzer.TotalEnergy=§6Total stored energy§f: %s
 oc:gui.Analyzer.Users=§6Users§f: %s
 oc:gui.Chat.NewVersion=A new version is available: %s
+oc:gui.Chat.WarningFingerprint=§cWARNING§f - fingerprint mismatch! Expected §a'%s'§f but got §e'%s'§f. Unless you are a modder and are running the deobfuscated version of the mod, it is §lstrongly§f recommended to redownload OpenComputers, because the JAR you are using may have been tampered with.
 oc:gui.Chat.WarningLuaFallback=Native Lua libraries are not available, computers will not be able to persist their state. They will reboot on chunk reloads.
 oc:gui.Chat.WarningPower=No supported power providing mod available. Computers, screens and all other components will §lnot§f require energy. Install one of the following mods to enable power: BuildCraft, IndustrialCraft2, Thermal Expansion or Universal Electricity. Disable power in the config to suppress this warning.
 oc:gui.Chat.WarningProjectRed=You are using a version of Project: Red that is incompatible with OpenComputers. Try updating your version of Project: Red.

src/main/scala/li/cil/oc/OpenComputers.scala

@@ -3,14 +3,13 @@ package li.cil.oc
 import cpw.mods.fml.common.Mod
 import cpw.mods.fml.common.Mod.EventHandler
 import cpw.mods.fml.common.SidedProxy
-import cpw.mods.fml.common.event.FMLInitializationEvent
+import cpw.mods.fml.common.event.{FMLFingerprintViolationEvent, FMLInitializationEvent, FMLPostInitializationEvent, FMLPreInitializationEvent}
-import cpw.mods.fml.common.event.FMLPostInitializationEvent
-import cpw.mods.fml.common.event.FMLPreInitializationEvent
 import cpw.mods.fml.common.network.FMLEventChannel
 import java.util.logging.Logger
 import li.cil.oc.common.Proxy
 
-@Mod(modid = "OpenComputers", modLanguage = "scala", useMetadata = true)
+@Mod(modid = "OpenComputers", modLanguage = "scala",
+  certificateFingerprint = "@FINGERPRINT@", useMetadata = true)
 object OpenComputers {
   val log = Logger.getLogger("OpenComputers")
 
@@ -19,6 +18,11 @@ object OpenComputers {
 
   var channel: FMLEventChannel = _
 
+  var tampered: Option[FMLFingerprintViolationEvent] = None
+
+  @EventHandler
+  def invalidFingerprint(e: FMLFingerprintViolationEvent) = tampered = Some(e)
+
   @EventHandler
   def preInit(e: FMLPreInitializationEvent) = proxy.preInit(e)
 

src/main/scala/li/cil/oc/common/EventHandler.scala

@@ -1,15 +1,15 @@
 package li.cil.oc.common
 
 import cpw.mods.fml.common.eventhandler.SubscribeEvent
+import cpw.mods.fml.common.FMLCommonHandler
 import cpw.mods.fml.common.gameevent.PlayerEvent._
 import cpw.mods.fml.common.gameevent.TickEvent.ServerTickEvent
-import cpw.mods.fml.common.{Loader, FMLCommonHandler}
 import li.cil.oc.api.Network
 import li.cil.oc.server.driver.Registry
 import li.cil.oc.util.ExtendedNBT._
 import li.cil.oc.util.LuaStateFactory
 import li.cil.oc.util.mods.ProjectRed
-import li.cil.oc.{UpdateCheck, Items, Settings}
+import li.cil.oc.{OpenComputers, UpdateCheck, Items, Settings}
 import net.minecraft.entity.player.EntityPlayerMP
 import net.minecraft.item.{ItemMap, ItemStack}
 import net.minecraft.server.MinecraftServer
@@ -57,6 +57,11 @@ object EventHandler {
           player.addChatMessage(new ChatComponentText("§aOpenComputers§f: ").appendSibling(
             new ChatComponentTranslation(Settings.namespace + "gui.Chat.WarningPower")))
         }
+        OpenComputers.tampered match {
+          case Some(event) => player.addChatMessage(new ChatComponentText("§aOpenComputers§f: ").appendSibling(
+            new ChatComponentTranslation(Settings.namespace + "gui.Chat.WarningFingerprint", event.expectedFingerprint, event.fingerprints.toArray.mkString(", "))))
+          case _ =>
+        }
         // Do update check in local games and for OPs.
         if (!MinecraftServer.getServer.isDedicatedServer || MinecraftServer.getServer.getConfigurationManager.isPlayerOpped(player.getCommandSenderName)) {
           UpdateCheck.checkForPlayer(player)

src/main/scala/li/cil/oc/common/SaveHandler.scala

@@ -6,9 +6,12 @@ import java.util.logging.Level
 import li.cil.oc.{OpenComputers, Settings}
 import net.minecraft.world.ChunkCoordIntPair
 import net.minecraftforge.common.DimensionManager
-import net.minecraftforge.event.world.WorldEvent
+import net.minecraftforge.event.world.{ChunkDataEvent, WorldEvent}
 import scala.collection.mutable
 
+// Used by the native lua state to store kernel and stack data in auxiliary
+// files instead of directly in the tile entity data, avoiding potential
+// problems with the tile entity data becoming too large.
 object SaveHandler {
   val saveData = mutable.Map.empty[ChunkCoordIntPair, mutable.Map[String, Array[Byte]]]
 
@@ -46,19 +49,17 @@ object SaveHandler {
     }
   }
 
-  // Used by the native lua state to store kernel and stack data in auxiliary
-  // files instead of directly in the tile entity data, avoiding potential
-  // problems with the tile entity data becoming too large.
   @SubscribeEvent
-  def onWorldSave(e: WorldEvent.Save) = saveData.synchronized {
+  def onChunkSave(e: ChunkDataEvent.Save) = saveData.synchronized {
     val path = savePath
-    path.mkdirs()
+    val chunk = e.getChunk.getChunkCoordIntPair
-    for ((chunk, entries) <- saveData) {
     val chunkPath = new io.File(path, s"${chunk.chunkXPos}.${chunk.chunkZPos}")
-      chunkPath.mkdirs()
     if (chunkPath.exists && chunkPath.isDirectory) {
       for (file <- chunkPath.listFiles()) file.delete()
     }
+    saveData.get(chunk) match {
+      case Some(entries) =>
+        chunkPath.mkdirs()
         for ((name, data) <- entries) {
           val file = new io.File(chunkPath, name)
           try {
@@ -71,7 +72,12 @@ object SaveHandler {
             case e: io.IOException => OpenComputers.log.log(Level.WARNING, s"Error saving auxiliary tile entity data to '${file.getAbsolutePath}.", e)
           }
         }
+      case _ => chunkPath.delete()
     }
+  }
+
+  @SubscribeEvent
+  def onWorldSave(e: WorldEvent.Save) = saveData.synchronized {
     saveData.clear()
   }
 }

src/main/scala/li/cil/oc/common/tileentity/Robot.scala

@@ -620,7 +620,7 @@ object Robot {
   catch {
     case t: Throwable =>
       OpenComputers.log.log(Level.WARNING, "Failed loading robot name list.", t)
-      Array.empty
+      Array.empty[String]
   }
 
   def randomName = names((math.random * names.length).toInt)