optimized map ionization to avoid extra marks

src/mightypork/util/constraints/rect/Rect.java

@@ -725,7 +725,6 @@ public abstract class Rect implements RectBound, Digestable<RectDigest> {
 			
 		};
 	}
-
 	
 	
 	/**
@@ -756,7 +755,6 @@ public abstract class Rect implements RectBound, Digestable<RectDigest> {
 			
 		};
 	}
-
 	
 	
 	/**
@@ -789,7 +787,6 @@ public abstract class Rect implements RectBound, Digestable<RectDigest> {
 	}
 	
 	
-	
 	public Num x()
 	{
 		return p_x != null ? p_x : (p_x = origin().xn());
@@ -1048,5 +1045,5 @@ public abstract class Rect implements RectBound, Digestable<RectDigest> {
 		//      overflow || intersect
 		return ((rw < rx || rw > tx) && (rh < ry || rh > ty) && (tw < tx || tw > rx) && (th < ty || th > ry));
 	}
-
+	
 }

src/mightypork/util/error/CorruptedDataException.java

@@ -1,5 +1,6 @@
 package mightypork.util.error;
 
+
 import java.io.IOException;
 
 

src/mightypork/util/files/ion/Ion.java

@@ -3,9 +3,13 @@ package mightypork.util.files.ion;
 
 import java.io.*;
 import java.nio.ByteBuffer;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Map.Entry;
 
+import mightypork.rogue.world.tile.Tile;
 import mightypork.util.error.CorruptedDataException;
 import mightypork.util.logging.Log;
 
@@ -403,11 +407,17 @@ public class Ion {
 	 */
 	public static void writeObject(OutputStream out, Object obj) throws IOException
 	{
+		if (obj instanceof Tile) throw new IllegalAccessError();
+		if (obj == null) {
+			writeMark(out, NULL);
+			return;
+		}
+		
 		if (obj instanceof Ionizable) {
 			
-			short mark = ((Ionizable) obj).getIonMark();
+			final short mark = ((Ionizable) obj).getIonMark();
 			
-			Class<? extends Ionizable> clzRegistered = customIonizables.get(mark);
+			final Class<? extends Ionizable> clzRegistered = customIonizables.get(mark);
 			
 			if (clzRegistered == null) {
 				throw new IOException("Ionizable object not registered: " + Log.str(obj.getClass()));
@@ -1292,6 +1302,10 @@ public class Ion {
 	public static <K, V> void writeMap(OutputStream out, Map<K, V> map) throws IOException
 	{
 		for (final Entry<K, V> e : map.entrySet()) {
+			if (e.getValue() == null) {
+				continue;
+			}
+			
 			writeMark(out, ENTRY);
 			writeObject(out, e.getKey());
 			writeObject(out, e.getValue());

src/mightypork/util/files/ion/IonBundle.java

@@ -1,5 +1,6 @@
 package mightypork.util.files.ion;
 
+
 import mightypork.util.files.ion.templates.IonizableHashMap;
 
 

src/mightypork/util/logging/Log.java

@@ -337,6 +337,8 @@ public class Log {
 	public static String str(Object o)
 	{
 		
+		if (o == null) return "<null>";
+		
 		boolean hasToString = false;
 		
 		try {