Fix handling of non-standard town_block_size values

still in towns/* directory)

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.dynmap</groupId>
   <artifactId>dynmap</artifactId>
-  <version>0.20</version>
+  <version>0.21.1</version>
   <name>dynmap</name>
     <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -29,6 +29,12 @@
     				<descriptors>
         				<descriptor>src/main/assembly/package.xml</descriptor>
     				</descriptors>
+					<!-- Hack for bug in maven-assembly: http://jira.codehaus.org/browse/MASSEMBLY-449 -->
+					<archiverConfig>
+						<fileMode>420</fileMode> <!-- 420(dec) = 644(oct) -->
+						<directoryMode>493</directoryMode> <!-- 493(dec) = 755(oct) -->
+						<defaultDirectoryMode>493</defaultDirectoryMode>
+					</archiverConfig>
 				</configuration>
 				<executions>
    					<execution>

src/main/java/org/dynmap/Armor.java

@@ -2,6 +2,7 @@ package org.dynmap;
 
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.PlayerInventory;
 import org.bukkit.Material;
 
 public class Armor {
@@ -10,27 +11,34 @@ public class Armor {
      * We rely on getArmorContents() to return 4 armor pieces in the order
      * of: boots, pants, chest, helmet
      */
-    private static final double armorPoints[] = {1.5, 3.0, 4.0, 1.5};
+    private static final int armorPoints[] = {3, 6, 8, 3};
 
     public static final int getArmorPoints(Player player) {
         int currentDurability = 0;
         int baseDurability = 0;
-        double baseArmorPoints = 0;
-        ItemStack inventory[] = player.getInventory().getArmorContents();
-        for(int i=0;i<inventory.length;i++) {
-            if(inventory[i] == null)
-                continue;
-            Material m = inventory[i].getType();
-            if(m == null)
-                continue;
-            final short maxDurability = m.getMaxDurability();
-            if(maxDurability < 0)
-                continue;
-            final short durability = inventory[i].getDurability();
-            baseDurability += maxDurability;
-            currentDurability += maxDurability - durability;
-            baseArmorPoints += armorPoints[i];
+        int baseArmorPoints = 0;
+        ItemStack[] itm = new ItemStack[4];
+        PlayerInventory inv = player.getInventory();
+        itm[0] = inv.getBoots();
+        itm[1]= inv.getLeggings();
+        itm[2] = inv.getChestplate();
+        itm[3] = inv.getHelmet();
+        for(int i = 0; i < 4; i++) {
+    		if(itm[i] == null) continue;
+        	int dur = itm[i].getDurability();
+        	int max = itm[i].getType().getMaxDurability();
+        	if(max <= 0) continue;
+        	if(i == 2)
+    			max = max + 1;	/* Always 1 too low for chestplate */
+        	else
+        		max = max - 3;	/* Always 3 too high, versus how client calculates it */
+        	baseDurability += max;
+        	currentDurability += max - dur;
+        	baseArmorPoints += armorPoints[i];
         }
-        return (int)Math.round(2*baseArmorPoints*currentDurability/baseDurability);
+        int ap = 0;
+        if(baseDurability > 0)
+    		ap = ((baseArmorPoints - 1) * currentDurability) / baseDurability + 1;
+        return ap;
     }
 }

src/main/java/org/dynmap/AsynchronousQueue.java

@@ -12,10 +12,14 @@ public class AsynchronousQueue<T> {
     private Set<T> set = new HashSet<T>();
     private Handler<T> handler;
     private int dequeueTime;
-
-    public AsynchronousQueue(Handler<T> handler, int dequeueTime) {
+    private int accelDequeueTime;
+    private int accelDequeueThresh;
+    
+    public AsynchronousQueue(Handler<T> handler, int dequeueTime, int accelDequeueThresh, int accelDequeueTime) {
         this.handler = handler;
         this.dequeueTime = dequeueTime;
+        this.accelDequeueTime = accelDequeueTime;
+        this.accelDequeueThresh = accelDequeueThresh;
     }
 
     public boolean push(T t) {
@@ -30,15 +34,10 @@ public class AsynchronousQueue<T> {
 
     private T pop() {
         synchronized (lock) {
-            try {
-                T t = queue.removeFirst();
-                if (!set.remove(t)) {
-                    // This should never happen.
-                }
-                return t;
-            } catch (NoSuchElementException e) {
-                return null;
-            }
+            T t = queue.pollFirst();
+            if(t != null)
+                set.remove(t);
+            return t;
         }
     }
 
@@ -88,7 +87,10 @@ public class AsynchronousQueue<T> {
                 if (t != null) {
                     handler.handle(t);
                 }
-                sleep(dequeueTime);
+                if(set.size() >= accelDequeueThresh)
+                    sleep(accelDequeueTime);
+                else
+                    sleep(dequeueTime);
             }
 
         } catch (Exception ex) {

src/main/java/org/dynmap/ClientUpdateComponent.java

@@ -42,7 +42,9 @@ public class ClientUpdateComponent extends Component {
             s(jp, "account", p.getName());
             /* Don't leak player location for world not visible on maps, or if sendposition disbaled */
             DynmapWorld pworld = MapManager.mapman.worldsLookup.get(p.getWorld().getName());
-            if(configuration.getBoolean("sendpositon", true) && (pworld != null) && pworld.sendposition) {
+            /* Fix typo on 'sendpositon' to 'sendposition', keep bad one in case someone used it */
+            if(configuration.getBoolean("sendposition", true) && configuration.getBoolean("sendpositon", true) &&
+                    (pworld != null) && pworld.sendposition) {
                 s(jp, "world", p.getWorld().getName());
                 s(jp, "x", pl.getX());
                 s(jp, "y", pl.getY());

src/main/java/org/dynmap/DynmapWorld.java

@@ -6,7 +6,6 @@ import java.util.List;
 import org.bukkit.World;
 import org.bukkit.Location;
 import org.dynmap.debug.Debug;
-import org.dynmap.kzedmap.KzedMap;
 import org.dynmap.utils.DynmapBufferedImage;
 import org.dynmap.utils.FileLockManager;
 import org.dynmap.utils.MapChunkCache;
@@ -32,6 +31,7 @@ public class DynmapWorld {
     public ConfigurationNode configuration;
     public List<Location> seedloc;
     public List<MapChunkCache.VisibilityLimit> visibility_limits;
+    public List<MapChunkCache.VisibilityLimit> hidden_limits;
     public AutoGenerateOption do_autogenerate;
     public MapChunkCache.HiddenChunkStyle hiddenchunkstyle;
     public int servertime;
@@ -104,11 +104,21 @@ public class DynmapWorld {
         }
     }
 
+    private static final String COORDSTART = "-0123456789";
     private static class PNGFileFilter implements FilenameFilter {
         String prefix;
-        public PNGFileFilter(String pre) { prefix = pre; }
+        String suffix;
+        public PNGFileFilter(String pre, MapType.ImageFormat fmt) {
+            if((pre != null) && (pre.length() > 0))
+                prefix = pre; 
+            suffix = "." + fmt.getFileExt();
+        }
         public boolean accept(File f, String n) {
-            if(n.endsWith(".png") && n.startsWith(prefix)) {
+            if(n.endsWith(suffix)) {
+                if((prefix != null) && (!n.startsWith(prefix)))
+                    return false;
+                if((prefix == null) && (COORDSTART.indexOf(n.charAt(0)) < 0))
+                    return false;
                 File fn = new File(f, n);
                 return fn.isFile();
             }
@@ -146,6 +156,7 @@ public class DynmapWorld {
         String zfnprefix;
         int bigworldshift;
         boolean isbigmap;
+        MapType.ImageFormat fmt;
     }
     
     public boolean freshenZoomOutFilesByLevel(int zoomlevel) {
@@ -252,6 +263,7 @@ public class DynmapWorld {
                 pd.zoomprefix = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz".substring(0, zoomlevel);
                 pd.bigworldshift = bigworldshift;
                 pd.isbigmap = mt.isBigWorldMap(this);
+                pd.fmt = mt.getImageFormat();
                 if(pd.isbigmap) {
                     if(zoomlevel > 0) {
                         pd.zoomprefix += "_";
@@ -282,15 +294,15 @@ public class DynmapWorld {
 
     private String makeFilePath(PrefixData pd, int x, int y, boolean zoomed) {
         if(pd.isbigmap)
-            return pd.baseprefix + "/" + (x >> pd.bigworldshift) + "_" + (y >> pd.bigworldshift) + "/" + (zoomed?pd.zfnprefix:pd.fnprefix) + x + "_" + y + ".png";
+            return pd.baseprefix + "/" + (x >> pd.bigworldshift) + "_" + (y >> pd.bigworldshift) + "/" + (zoomed?pd.zfnprefix:pd.fnprefix) + x + "_" + y + "." + pd.fmt.getFileExt();
         else
-            return (zoomed?pd.zfnprefix:pd.fnprefix) + "_" + x + "_" + y + ".png";            
+            return (zoomed?pd.zfnprefix:pd.fnprefix) + "_" + x + "_" + y + "." + pd.fmt.getFileExt();            
     }
     
     private int processZoomDirectory(File dir, PrefixData pd) {
         Debug.debug("processZoomDirectory(" + dir.getPath() + "," + pd.baseprefix + ")");
         HashMap<String, ProcessTileRec> toprocess = new HashMap<String, ProcessTileRec>();
-        String[] files = dir.list(new PNGFileFilter(pd.fnprefix));
+        String[] files = dir.list(new PNGFileFilter(pd.fnprefix, pd.fmt));
         if(files == null)
             return 0;
         for(String fn : files) {
@@ -434,7 +446,7 @@ public class DynmapWorld {
                 try {
                     if(!zf.getParentFile().exists())
                         zf.getParentFile().mkdirs();
-                    FileLockManager.imageIOWrite(zIm, "png", zf);
+                    FileLockManager.imageIOWrite(zIm, pd.fmt, zf);
                     Debug.debug("Saved zoom-out tile at " + zf.getPath());
                 } catch (IOException e) {
                     Debug.error("Failed to save zoom-out tile: " + zf.getName(), e);

src/main/java/org/dynmap/MapManager.java

@@ -11,6 +11,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.TreeSet;
 import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.ScheduledFuture;
@@ -29,6 +30,7 @@ import org.dynmap.utils.LegacyMapChunkCache;
 import org.dynmap.utils.MapChunkCache;
 import org.dynmap.utils.NewMapChunkCache;
 import org.dynmap.utils.SnapshotCache;
+import org.dynmap.utils.TileFlags;
 
 public class MapManager {
     public AsynchronousQueue<MapTile> tileQueue;
@@ -41,6 +43,8 @@ public class MapManager {
     private DynmapPlugin plug_in;
     private long timeslice_int = 0; /* In milliseconds */
     private int max_chunk_loads_per_tick = DEFAULT_CHUNKS_PER_TICK;
+    private int parallelrendercnt = 0;
+    private int progressinterval = 100;
     
     private int zoomout_period = DEFAULT_ZOOMOUT_PERIOD;	/* Zoom-out tile processing period, in seconds */
     /* Which fullrenders are active */
@@ -95,7 +99,7 @@ public class MapManager {
     
     private class DynmapScheduledThreadPoolExecutor extends ScheduledThreadPoolExecutor {
         DynmapScheduledThreadPoolExecutor() {
-            super(POOL_SIZE);
+            super(POOL_SIZE + parallelrendercnt);
             this.setThreadFactory(new OurThreadFactory());
             /* Set shutdown policy to stop everything */
             setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
@@ -151,11 +155,10 @@ public class MapManager {
         Location loc;        
         int    map_index = -1;    /* Which map are we on */
         MapType map;
-        HashSet<MapTile> found = null;
-        HashSet<MapTile> rendered = null;
+        TileFlags found = null;
+        TileFlags rendered = null;
         LinkedList<MapTile> renderQueue = null;
         MapTile tile0 = null;
-        MapTile tile = null;
         int rendercnt = 0;
         CommandSender sender;
         long timeaccum;
@@ -166,19 +169,20 @@ public class MapManager {
         int cxmin, cxmax, czmin, czmax;
         String rendertype;
         boolean cancelled;
+        String mapname;
 
         /* Full world, all maps render */
-        FullWorldRenderState(DynmapWorld dworld, Location l, CommandSender sender) {
-            this(dworld, l, sender, -1);
+        FullWorldRenderState(DynmapWorld dworld, Location l, CommandSender sender, String mapname) {
+            this(dworld, l, sender, mapname, -1);
             rendertype = "Full render";
         }
         
         /* Full world, all maps render, with optional render radius */
-        FullWorldRenderState(DynmapWorld dworld, Location l, CommandSender sender, int radius) {
+        FullWorldRenderState(DynmapWorld dworld, Location l, CommandSender sender, String mapname, int radius) {
             world = dworld;
             loc = l;
-            found = new HashSet<MapTile>();
-            rendered = new HashSet<MapTile>();
+            found = new TileFlags();
+            rendered = new TileFlags();
             renderQueue = new LinkedList<MapTile>();
             this.sender = sender;
             if(radius < 0) {
@@ -193,6 +197,7 @@ public class MapManager {
                 czmax = (l.getBlockZ() + radius+15)>>4;
                 rendertype = "Radius render";
             }
+            this.mapname = mapname;
         }
 
         /* Single tile render - used for incremental renders */
@@ -204,7 +209,7 @@ public class MapManager {
         }
 
         public String toString() {
-            return "world=" + world.world.getName() + ", map=" + map + " tile=" + tile;
+            return "world=" + world.world.getName() + ", map=" + map;
         }
         
         public void cleanup() {
@@ -216,6 +221,8 @@ public class MapManager {
         }
         public void run() {
             long tstart = System.currentTimeMillis();
+            MapTile tile = null;
+            List<MapTile> tileset = null;
             
             if(cancelled) {
             	cleanup();
@@ -240,8 +247,17 @@ public class MapManager {
                     /* Advance to next unrendered map */
                     while(map_index < world.maps.size()) {
                         map_index++;    /* Move to next one */
-                        if((map_index < world.maps.size()) && (renderedmaps.contains(world.maps.get(map_index)) == false))
-                            break;
+                        if(map_index >= world.maps.size()) break;
+                        /* If single map render, see if this is our target */
+                        if(mapname != null) {
+                            if(world.maps.get(map_index).getName().equals(mapname)) {
+                                break;
+                            }
+                        }
+                        else {
+                            if(renderedmaps.contains(world.maps.get(map_index)) == false)
+                                break;
+                        }
                     }
                     if(map_index >= world.maps.size()) {    /* Last one done? */
                         sender.sendMessage(rendertype + " of '" + world.world.getName() + "' finished.");
@@ -253,6 +269,8 @@ public class MapManager {
                     /* Build active map list */
                     activemaps = "";
                     for(String n : activemaplist) {
+                        if((mapname != null) && (!mapname.equals(n)))
+                            continue;
                         if(activemaps.length() > 0)
                             activemaps += ",";
                         activemaps += n;
@@ -262,28 +280,96 @@ public class MapManager {
 
                     /* Now, prime the render queue */
                     for (MapTile mt : map.getTiles(loc)) {
-                        if (!found.contains(mt)) {
-                            found.add(mt);
+                        if (!found.getFlag(mt.tileOrdinalX(), mt.tileOrdinalY())) {
+                            found.setFlag(mt.tileOrdinalX(), mt.tileOrdinalY(), true);
                             renderQueue.add(mt);
                         }
                     }
                     if(world.seedloc != null) {
                         for(Location seed : world.seedloc) {
                             for (MapTile mt : map.getTiles(seed)) {
-                                if (!found.contains(mt)) {
-                                    found.add(mt);
+                                if (!found.getFlag(mt.tileOrdinalX(),mt.tileOrdinalY())) {
+                                    found.setFlag(mt.tileOrdinalX(),mt.tileOrdinalY(), true);
                                     renderQueue.add(mt);
                                 }
                             }
                         }
                     }
                 }
-                tile = renderQueue.pollFirst();
+                if(parallelrendercnt > 1) { /* Doing parallel renders? */
+                    tileset = new ArrayList<MapTile>();
+                    for(int i = 0; i < parallelrendercnt; i++) {
+                        tile = renderQueue.pollFirst();
+                        if(tile != null)
+                            tileset.add(tile);
+                    }
+                }
+                else {
+                    tile = renderQueue.pollFirst();
+                }
             }
             else {    /* Else, single tile render */
                 tile = tile0;
             }
             World w = world.world;
+ 
+            boolean notdone = true;
+            
+            if(tileset != null) {
+                long save_timeaccum = timeaccum;
+                List<Future<Boolean>> rslt = new ArrayList<Future<Boolean>>();
+                final int cnt = tileset.size();
+                for(int i = 1; i < cnt; i++) {   /* Do all but first on other threads */
+                    final MapTile mt = tileset.get(i);
+                    if((mapman != null) && (mapman.render_pool != null)) {
+                        final long ts = tstart;
+                        Future<Boolean> future = mapman.render_pool.submit(new Callable<Boolean>() {
+                            public Boolean call() {
+                                return processTile(mt, mt.world.world, ts, cnt);
+                            }
+                        });
+                        rslt.add(future);
+                    }
+                }
+                /* Now, do our render (first one) */
+                notdone = processTile(tileset.get(0), w, tstart, cnt);
+                /* Now, join with others */
+                for(int i = 0; i < rslt.size(); i++) {
+                    try {
+                        notdone = notdone && rslt.get(i).get();
+                    } catch (ExecutionException xx) {
+                        Log.severe(xx);
+                        notdone = false;
+                    } catch (InterruptedException ix) {
+                        notdone = false;
+                    }
+                }
+                timeaccum = save_timeaccum + System.currentTimeMillis() - tstart;
+            }
+            else {
+                notdone = processTile(tile, w, tstart, 1);
+            }
+            
+            if(notdone) {
+                if(tile0 == null) {    /* fullrender */
+                    long tend = System.currentTimeMillis();
+                    if(timeslice_int > (tend-tstart)) { /* We were fast enough */
+                        scheduleDelayedJob(this, timeslice_int - (tend-tstart));
+                    }
+                    else {  /* Schedule to run ASAP */
+                        scheduleDelayedJob(this, 0);
+                    }
+                }
+                else {
+                    cleanup();
+                }
+            }
+            else {
+                cleanup();
+            }
+        }
+
+        private boolean processTile(MapTile tile, World w, long tstart, int parallelcnt) {
             /* Get list of chunks required for tile */
             List<DynmapChunk> requiredChunks = tile.getRequiredChunks();
             /* If we are doing radius limit render, see if any are inside limits */
@@ -302,55 +388,49 @@ public class MapManager {
                                                       tile.isHightestBlockYDataNeeded(), tile.isBiomeDataNeeded(), 
                                                       tile.isRawBiomeDataNeeded());
             if(cache == null) {
-                cleanup();
-                return; /* Cancelled/aborted */
+                return false; /* Cancelled/aborted */
             }
             if(tile0 != null) {    /* Single tile? */
                 if(cache.isEmpty() == false)
-                    tile.render(cache);
+                    tile.render(cache, null);
             }
             else {
-            	/* Switch to not checking if rendered tile is blank - breaks us on skylands, where tiles can be nominally blank - just work off chunk cache empty */
+                /* Switch to not checking if rendered tile is blank - breaks us on skylands, where tiles can be nominally blank - just work off chunk cache empty */
                 if (cache.isEmpty() == false) {
-                	tile.render(cache);
-                    found.remove(tile);
-                    rendered.add(tile);
-                    for (MapTile adjTile : map.getAdjecentTiles(tile)) {
-                        if (!found.contains(adjTile) && !rendered.contains(adjTile)) {
-                            found.add(adjTile);
-                            renderQueue.add(adjTile);
+                    tile.render(cache, mapname);
+                    synchronized(lock) {
+//                        found.setFlag(tile.tileOrdinalX(),tile.tileOrdinalY(),false);
+                        rendered.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), true);
+                        for (MapTile adjTile : map.getAdjecentTiles(tile)) {
+                            if (!found.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY()) && 
+                                !rendered.getFlag(adjTile.tileOrdinalX(),adjTile.tileOrdinalY())) {
+                                found.setFlag(adjTile.tileOrdinalX(), adjTile.tileOrdinalY(), true);
+                                renderQueue.add(adjTile);
+                            }
                         }
                     }
                 }
-                found.remove(tile);
-                if(!cache.isEmpty()) {
-                    rendercnt++;
-                    timeaccum += System.currentTimeMillis() - tstart;
-                    if((rendercnt % 100) == 0) {
-                        double msecpertile = (double)timeaccum / (double)rendercnt / (double)activemaplist.size();
-                        if(activemaplist.size() > 1) 
-                            sender.sendMessage(rendertype + " of maps [" + activemaps + "] of '" +
+                synchronized(lock) {
+//                    found.setFlag(tile.tileOrdinalX(), tile.tileOrdinalY(), false);
+                    if(!cache.isEmpty()) {
+                        rendercnt++;
+                        timeaccum += System.currentTimeMillis() - tstart;
+                        if((rendercnt % progressinterval) == 0) {
+                            double msecpertile = (double)timeaccum / (double)rendercnt / (double)activemaplist.size();
+                            if(activemaplist.size() > 1) 
+                                sender.sendMessage(rendertype + " of maps [" + activemaps + "] of '" +
                                                w.getName() + "' in progress - " + rendercnt + " tiles rendered each (" + String.format("%.2f", msecpertile) + " msec/map-tile).");
-                        else
-                            sender.sendMessage(rendertype + " of map '" + activemaps + "' of '" +
+                            else
+                                sender.sendMessage(rendertype + " of map '" + activemaps + "' of '" +
                                                w.getName() + "' in progress - " + rendercnt + " tiles rendered (" + String.format("%.2f", msecpertile) + " msec/tile).");
+                        }
                     }
                 }
             }
             /* And unload what we loaded */
             cache.unloadChunks();
-            if(tile0 == null) {    /* fullrender */
-                long tend = System.currentTimeMillis();
-                if(timeslice_int > (tend-tstart)) { /* We were fast enough */
-                    scheduleDelayedJob(this, timeslice_int - (tend-tstart));
-                }
-                else {  /* Schedule to run ASAP */
-                    scheduleDelayedJob(this, 0);
-                }
-            }
-            else {
-                cleanup();
-            }
+            
+            return true;
         }
         
         public void cancelRender() {
@@ -407,13 +487,20 @@ public class MapManager {
         hdmapman.loadHDPerspectives(plugin);
         hdmapman.loadHDLightings(plugin);
         sscache = new SnapshotCache(configuration.getInteger("snapshotcachesize", 500));
+        parallelrendercnt = configuration.getInteger("parallelrendercnt", 0);
+        progressinterval = configuration.getInteger("progressloginterval", 100);
+        if(progressinterval < 100) progressinterval = 100;
         
-        this.tileQueue = new AsynchronousQueue<MapTile>(new Handler<MapTile>() {
-            @Override
-            public void handle(MapTile t) {
-                scheduleDelayedJob(new FullWorldRenderState(t), 0);
-            }
-        }, (int) (configuration.getDouble("renderinterval", 0.5) * 1000));
+        this.tileQueue = new AsynchronousQueue<MapTile>(
+                new Handler<MapTile>() {
+                @Override
+                public void handle(MapTile t) {
+                    scheduleDelayedJob(new FullWorldRenderState(t), 0);
+                }
+            }, 
+            (int) (configuration.getDouble("renderinterval", 0.5) * 1000),
+            configuration.getInteger("renderacceleratethreshold", 30),
+            (int)(configuration.getDouble("renderaccelerateinterval", 0.2) * 1000));
 
         /* On dedicated thread, so default to no delays */
         timeslice_int = (long)(configuration.getDouble("timesliceinterval", 0.0) * 1000);
@@ -434,7 +521,7 @@ public class MapManager {
         }        
     }
 
-    void renderFullWorld(Location l, CommandSender sender) {
+    void renderFullWorld(Location l, CommandSender sender, String mapname) {
         DynmapWorld world = getWorld(l.getWorld().getName());
         if (world == null) {
             sender.sendMessage("Could not render: world '" + l.getWorld().getName() + "' not defined in configuration.");
@@ -448,7 +535,7 @@ public class MapManager {
                 sender.sendMessage(rndr.rendertype + " of world '" + wname + "' already active.");
                 return;
             }
-            rndr = new FullWorldRenderState(world,l,sender);    /* Make new activation record */
+            rndr = new FullWorldRenderState(world,l,sender, mapname);    /* Make new activation record */
             active_renders.put(wname, rndr);    /* Add to active table */
         }
         /* Schedule first tile to be worked */
@@ -457,7 +544,7 @@ public class MapManager {
         sender.sendMessage("Full render starting on world '" + wname + "'...");
     }
 
-    void renderWorldRadius(Location l, CommandSender sender, int radius) {
+    void renderWorldRadius(Location l, CommandSender sender, String mapname, int radius) {
         DynmapWorld world = getWorld(l.getWorld().getName());
         if (world == null) {
             sender.sendMessage("Could not render: world '" + l.getWorld().getName() + "' not defined in configuration.");
@@ -471,7 +558,7 @@ public class MapManager {
                 sender.sendMessage(rndr.rendertype + " of world '" + wname + "' already active.");
                 return;
             }
-            rndr = new FullWorldRenderState(world,l,sender, radius);    /* Make new activation record */
+            rndr = new FullWorldRenderState(world,l,sender, mapname, radius);    /* Make new activation record */
             active_renders.put(wname, rndr);    /* Add to active table */
         }
         /* Schedule first tile to be worked */
@@ -550,6 +637,19 @@ public class MapManager {
                 dynmapWorld.seedloc.add(new Location(w, (lim.x0+lim.x1)/2, 64, (lim.z0+lim.z1)/2));
             }            
         }
+        /* Load hidden limits, if any are defined */
+        List<ConfigurationNode> hidelimits = worldConfiguration.getNodes("hiddenlimits");
+        if(hidelimits != null) {
+            dynmapWorld.hidden_limits = new ArrayList<MapChunkCache.VisibilityLimit>();
+            for(ConfigurationNode vis : hidelimits) {
+                MapChunkCache.VisibilityLimit lim = new MapChunkCache.VisibilityLimit();
+                lim.x0 = vis.getInteger("x0", 0);
+                lim.x1 = vis.getInteger("x1", 0);
+                lim.z0 = vis.getInteger("z0", 0);
+                lim.z1 = vis.getInteger("z1", 0);
+                dynmapWorld.hidden_limits.add(lim);
+            }            
+        }
         String autogen = worldConfiguration.getString("autogenerate-to-visibilitylimits", "none");
         if(autogen.equals("permanent")) {
             dynmapWorld.do_autogenerate = AutoGenerateOption.PERMANENT;
@@ -614,9 +714,24 @@ public class MapManager {
         return invalidates;
     }
 
+    public int touchVolume(Location l0, Location l1) {
+        DynmapWorld world = getWorld(l0.getWorld().getName());
+        if (world == null)
+            return 0;
+        int invalidates = 0;
+        for (int i = 0; i < world.maps.size(); i++) {
+            MapTile[] tiles = world.maps.get(i).getTiles(l0, l1);
+            for (int j = 0; j < tiles.length; j++) {
+                invalidateTile(tiles[j]);
+                invalidates++;
+            }
+        }
+        return invalidates;
+    }
+
     public void invalidateTile(MapTile tile) {
-        Debug.debug("Invalidating tile " + tile.getFilename());
-        tileQueue.push(tile);
+        if(tileQueue.push(tile))
+            Debug.debug("Invalidating tile " + tile.getFilename());
     }
 
     public static void scheduleDelayedJob(Runnable job, long delay_in_msec) {
@@ -707,6 +822,13 @@ public class MapManager {
             c.setHiddenFillStyle(w.hiddenchunkstyle);
             c.setAutoGenerateVisbileRanges(w.do_autogenerate);
         }
+        if(w.hidden_limits != null) {
+            for(MapChunkCache.VisibilityLimit limit: w.hidden_limits) {
+                c.setHiddenRange(limit);
+            }
+            c.setHiddenFillStyle(w.hiddenchunkstyle);
+        }
+
         c.setChunks(w.world, chunks);
         if(c.setChunkDataTypes(blockdata, biome, highesty, rawbiome) == false)
             Log.severe("CraftBukkit build does not support biome APIs");
@@ -714,33 +836,37 @@ public class MapManager {
             return c;
         }
 
-    	synchronized(loadlock) {
-    		final MapChunkCache cc = c;
-    		long now = System.currentTimeMillis();
-    		
-    		if(cur_tick != (now/50)) {	/* New tick? */
-    			chunks_in_cur_tick = max_chunk_loads_per_tick;
-    			cur_tick = now/50;
-    		}
-    		
-            while(!cc.isDoneLoading()) {
-            	final int cntin = chunks_in_cur_tick;
-            	Future<Integer> f = scheduler.callSyncMethod(plug_in, new Callable<Integer>() {
-            		public Integer call() throws Exception {
-		                return Integer.valueOf(cntin - cc.loadChunks(cntin));
-            		}
-            	});
-            	try {
-            		chunks_in_cur_tick = f.get();
-            	} catch (Exception ix) {
-            		Log.severe(ix);
-            		return null;
-            	}
-        		if(chunks_in_cur_tick == 0) {
-        			chunks_in_cur_tick = max_chunk_loads_per_tick;
-        			try { Thread.sleep(50); } catch (InterruptedException ix) {}
-        		}
+        final MapChunkCache cc = c;
+
+        while(!cc.isDoneLoading()) {
+            synchronized(loadlock) {
+                long now = System.currentTimeMillis();
+                
+                if(cur_tick != (now/50)) {  /* New tick? */
+                    chunks_in_cur_tick = max_chunk_loads_per_tick;
+                    cur_tick = now/50;
+                }
             }
+        	Future<Boolean> f = scheduler.callSyncMethod(plug_in, new Callable<Boolean>() {
+        		public Boolean call() throws Exception {
+        		    boolean exhausted;
+        		    synchronized(loadlock) {
+        		        if(chunks_in_cur_tick > 0)
+        		            chunks_in_cur_tick -= cc.loadChunks(chunks_in_cur_tick);
+        		        exhausted = (chunks_in_cur_tick == 0);
+        		    }
+        		    return exhausted;
+        		}
+        	});
+        	boolean delay;
+        	try {
+    	        delay = f.get();
+        	} catch (Exception ix) {
+        		Log.severe(ix);
+        		return null;
+        	}
+            if(delay)
+                try { Thread.sleep(50); } catch (InterruptedException ix) {}
     	}
         return c;
     }
@@ -788,6 +914,7 @@ public class MapManager {
         sender.sendMessage("  TOTALS: processed=" + tot.loggedcnt + ", rendered=" + tot.renderedcnt + 
                            ", updated=" + tot.updatedcnt + ", transparent=" + tot.transparentcnt);
         sender.sendMessage("  Cache hit rate: " + sscache.getHitRate() + "%");
+        sender.sendMessage("  Triggered update queue size: " + tileQueue.size());
     }
     /**
      * Reset statistics

src/main/java/org/dynmap/MapTile.java

@@ -10,7 +10,7 @@ import org.dynmap.utils.MapChunkCache;
 public abstract class MapTile {
     protected DynmapWorld world;
 
-    public abstract boolean render(MapChunkCache cache);
+    public abstract boolean render(MapChunkCache cache, String mapname);
     public abstract List<DynmapChunk> getRequiredChunks();
     public abstract MapTile[] getAdjecentTiles();
 
@@ -51,4 +51,7 @@ public abstract class MapTile {
     public abstract boolean isRawBiomeDataNeeded();
     public abstract boolean isBlockTypeDataNeeded();
 
+    public abstract int tileOrdinalX();
+    public abstract int tileOrdinalY();
+    
 }

src/main/java/org/dynmap/MapType.java

@@ -1,20 +1,41 @@
 package org.dynmap;
 
-import java.io.File;
 import java.util.List;
 
 import org.bukkit.Location;
-import org.dynmap.utils.MapChunkCache;
 import org.json.simple.JSONObject;
 
 public abstract class MapType {
+    public enum ImageFormat {
+        FORMAT_PNG("png", "png", 0.0f),
+        FORMAT_JPG75("jpg-q75", "jpg", 0.75f),
+        FORMAT_JPG80("jpg-q80", "jpg", 0.80f),
+        FORMAT_JPG85("jpg-q85", "jpg", 0.85f),
+        FORMAT_JPG("jpg", "jpg", 0.85f),
+        FORMAT_JPG90("jpg-q90", "jpg", 0.90f),
+        FORMAT_JPG95("jpg-q95", "jpg", 0.95f),
+        FORMAT_JPG100("jpg-q100", "jpg", 1.00f);
+        String id;
+        String ext;
+        float qual;
+        
+        ImageFormat(String id, String ext, float quality) {
+            this.id = id;
+            this.ext = ext;
+            this.qual = quality;
+        }
+        public String getID() { return id; }
+        public String getFileExt() { return ext; }
+        public float getQuality() { return qual; }
+    };
+
     public abstract MapTile[] getTiles(Location l);
 
+    public abstract MapTile[] getTiles(Location l0, Location l1);
+
     public abstract MapTile[] getAdjecentTiles(MapTile tile);
 
     public abstract List<DynmapChunk> getRequiredChunks(MapTile tile);
-
-    public abstract boolean render(MapChunkCache cache, MapTile tile, File outputFile);
     
     public void buildClientConfiguration(JSONObject worldObject, DynmapWorld w) {
     }
@@ -41,6 +62,9 @@ public abstract class MapType {
     public abstract boolean isBigWorldMap(DynmapWorld w);
     /* Return number of zoom levels needed by this map (before extra levels from extrazoomout) */
     public int getMapZoomOutLevels() { return 0; }
+    
+    public ImageFormat getImageFormat() { return ImageFormat.FORMAT_PNG; }
+    
     /**
      * Step sequence for creating zoomed file: first index is top-left, second top-right, third bottom-left, forth bottom-right
      * Values correspond to tile X,Y (0), X+step,Y (1), X,Y+step (2), X+step,Y+step (3) 

src/main/java/org/dynmap/PlayerFaces.java

@@ -0,0 +1,139 @@
+package org.dynmap;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import javax.imageio.ImageIO;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event.Type;
+import org.bukkit.event.player.PlayerListener;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.dynmap.MapType.ImageFormat;
+import org.dynmap.debug.Debug;
+import org.dynmap.utils.DynmapBufferedImage;
+import org.dynmap.utils.FileLockManager;
+
+/**
+ * Listen for player logins, and process player faces by fetching skins *
+ */
+public class PlayerFaces {
+    private DynmapPlugin plugin;
+    private File facesdir;
+    private File faces8x8dir;
+    private File faces16x16dir;
+    private File faces32x32dir;
+
+    
+    private class LoadPlayerImages implements Runnable {
+        public String playername;
+        public LoadPlayerImages(String playername) {
+            this.playername = playername;
+        }
+        public void run() {
+            BufferedImage img = null;
+            try {
+                URL url = new URL("http://s3.amazonaws.com/MinecraftSkins/" + playername + ".png");
+                img = ImageIO.read(url);    /* Load skin for player */
+            } catch (IOException iox) {
+                Debug.debug("Error loading skin for '" + playername + "' - " + iox);
+            }
+            if(img == null) {
+                try {
+                    InputStream in = getClass().getResourceAsStream("/char.png");
+                    img = ImageIO.read(in);    /* Load generic skin for player */
+                    in.close();
+                } catch (IOException iox) {
+                    Debug.debug("Error loading default skin for '" + playername + "' - " + iox);
+                }
+            }
+            if(img == null) {   /* No image to process?  Quit */
+                return;
+            }
+            int[] faceaccessory = new int[64];  /* 8x8 of face accessory */
+            /* Get buffered image for face at 8x8 */
+            DynmapBufferedImage face8x8 = DynmapBufferedImage.allocateBufferedImage(8, 8);
+            int[] bgcolor = new int[1];
+            img.getRGB(0, 0, 1, 1, bgcolor, 0, 1);  /* Get BG color (for accessory face) */
+            img.getRGB(8, 8, 8, 8, face8x8.argb_buf, 0, 8); /* Read face from image */
+            img.getRGB(40, 8, 8, 8, faceaccessory, 0, 8); /* Read face accessory from image */
+            /* Apply accessory to face: first element is transparency color so only ones not matching it */
+            for(int i = 0; i < 64; i++) {
+                if(faceaccessory[i] != bgcolor[0]) 
+                    face8x8.argb_buf[i] = faceaccessory[i];
+                else if(face8x8.argb_buf[i] == bgcolor[0])
+                    face8x8.argb_buf[i] = 0;
+            }
+            /* Write 8x8 file */
+            File img_8x8 = new File(faces8x8dir, playername + ".png");
+            FileLockManager.getWriteLock(img_8x8);
+            try {
+                FileLockManager.imageIOWrite(face8x8.buf_img, ImageFormat.FORMAT_PNG, img_8x8);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_8x8.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_8x8);
+            /* Make 16x16 version */
+            DynmapBufferedImage face16x16 = DynmapBufferedImage.allocateBufferedImage(16, 16);
+            for(int i = 0; i < 16; i++) {
+                for(int j = 0; j < 16; j++) {
+                    face16x16.argb_buf[i*16+j] = face8x8.argb_buf[(i/2)*8 + (j/2)];
+                }
+            }
+            /* Write 16x16 file */
+            File img_16x16 = new File(faces16x16dir, playername + ".png");
+            FileLockManager.getWriteLock(img_16x16);
+            try {
+                FileLockManager.imageIOWrite(face16x16.buf_img, ImageFormat.FORMAT_PNG, img_16x16);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_16x16.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_16x16);
+            DynmapBufferedImage.freeBufferedImage(face16x16);
+
+            /* Make 32x32 version */
+            DynmapBufferedImage face32x32 = DynmapBufferedImage.allocateBufferedImage(32, 32);
+            for(int i = 0; i < 32; i++) {
+                for(int j = 0; j < 32; j++) {
+                    face32x32.argb_buf[i*32+j] = face8x8.argb_buf[(i/4)*8 + (j/4)];
+                }
+            }
+            /* Write 32x32 file */
+            File img_32x32 = new File(faces32x32dir, playername + ".png");
+            FileLockManager.getWriteLock(img_32x32);
+            try {
+                FileLockManager.imageIOWrite(face32x32.buf_img, ImageFormat.FORMAT_PNG, img_32x32);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_32x32.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_32x32);
+            DynmapBufferedImage.freeBufferedImage(face32x32);
+            
+            DynmapBufferedImage.freeBufferedImage(face8x8);
+            /* TODO: signal update for player icon to client */
+        }
+    }
+    private class LoginListener extends PlayerListener {
+        @Override
+        public void onPlayerLogin(PlayerLoginEvent event) {
+            MapManager.scheduleDelayedJob(new LoadPlayerImages(event.getPlayer().getName()), 0);
+        }
+    }
+    public PlayerFaces(DynmapPlugin plugin) {
+        this.plugin = plugin;
+        plugin.registerEvent(Type.PLAYER_LOGIN, new LoginListener());
+        facesdir = new File(plugin.tilesDirectory, "faces");
+        facesdir.mkdirs();  /* Make sure directory exists */
+        faces8x8dir = new File(facesdir, "8x8");
+        faces8x8dir.mkdirs();
+        faces16x16dir = new File(facesdir, "16x16");
+        faces16x16dir.mkdirs();
+        faces32x32dir = new File(facesdir, "32x32");
+        faces32x32dir.mkdirs();
+    }
+
+    
+}

src/main/java/org/dynmap/SimpleWebChatComponent.java

@@ -32,11 +32,10 @@ public class SimpleWebChatComponent extends Component {
         
         if (configuration.getBoolean("allowchat", false)) {
             PlayerChatListener playerListener = new PlayerChatListener();
-            PluginManager pm = plugin.getServer().getPluginManager();
-            pm.registerEvent(org.bukkit.event.Event.Type.PLAYER_CHAT, playerListener, org.bukkit.event.Event.Priority.Monitor, plugin);
-            pm.registerEvent(org.bukkit.event.Event.Type.PLAYER_LOGIN, playerListener, org.bukkit.event.Event.Priority.Monitor, plugin);
-            pm.registerEvent(org.bukkit.event.Event.Type.PLAYER_JOIN, playerListener, org.bukkit.event.Event.Priority.Monitor, plugin);
-            pm.registerEvent(org.bukkit.event.Event.Type.PLAYER_QUIT, playerListener, org.bukkit.event.Event.Priority.Monitor, plugin);
+            plugin.registerEvent(org.bukkit.event.Event.Type.PLAYER_CHAT, playerListener);
+            plugin.registerEvent(org.bukkit.event.Event.Type.PLAYER_LOGIN, playerListener);
+            plugin.registerEvent(org.bukkit.event.Event.Type.PLAYER_JOIN, playerListener);
+            plugin.registerEvent(org.bukkit.event.Event.Type.PLAYER_QUIT, playerListener);
         }
     }
     

src/main/java/org/dynmap/flat/FlatMap.java

@@ -9,8 +9,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import javax.imageio.ImageIO;
-
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.World.Environment;
@@ -23,9 +21,7 @@ import org.dynmap.MapManager;
 import org.dynmap.TileHashManager;
 import org.dynmap.MapTile;
 import org.dynmap.MapType;
-import org.dynmap.MapType.MapStep;
 import org.dynmap.debug.Debug;
-import org.dynmap.kzedmap.KzedMap;
 import org.dynmap.utils.DynmapBufferedImage;
 import org.dynmap.utils.FileLockManager;
 import org.dynmap.utils.MapChunkCache;
@@ -95,6 +91,35 @@ public class FlatMap extends MapType {
         return new MapTile[] { new FlatMapTile(w, this, (int) Math.floor(l.getBlockX() / 128.0), (int) Math.floor(l.getBlockZ() / 128.0), 128) };
     }
 
+    @Override
+    public MapTile[] getTiles(Location l0, Location l1) {
+        DynmapWorld w = MapManager.mapman.getWorld(l0.getWorld().getName());
+        int xmin, xmax, zmin, zmax;
+        if(l0.getBlockX() < l1.getBlockX()) {
+            xmin = l0.getBlockX() >> 7;
+            xmax = l1.getBlockX() >> 7;
+        }
+        else {
+            xmin = l1.getBlockX() >> 7;
+            xmax = l0.getBlockX() >> 7;
+        }
+        if(l0.getBlockZ() < l1.getBlockZ()) {
+            zmin = l0.getBlockZ() >> 7;
+            zmax = l1.getBlockZ() >> 7;
+        }
+        else {
+            zmin = l1.getBlockZ() >> 7;
+            zmax = l0.getBlockZ() >> 7;
+        }
+        ArrayList<MapTile> rslt = new ArrayList<MapTile>();
+        for(int i = xmin; i <= xmax; i++) {
+            for(int j = zmin; j < zmax; j++) {
+                rslt.add(new FlatMapTile(w, this, i, j, 128));
+            }
+        }
+        return rslt.toArray(new MapTile[rslt.size()]);
+    }
+    
     @Override
     public MapTile[] getAdjecentTiles(MapTile tile) {
         FlatMapTile t = (FlatMapTile) tile;
@@ -124,7 +149,6 @@ public class FlatMap extends MapType {
         return result;
     }
 
-    @Override
     public boolean render(MapChunkCache cache, MapTile tile, File outputFile) {
         FlatMapTile t = (FlatMapTile) tile;
         World w = t.getWorld();
@@ -284,7 +308,7 @@ public class FlatMap extends MapType {
                 if(!outputFile.getParentFile().exists())
                     outputFile.getParentFile().mkdirs();
                 try {
-                    FileLockManager.imageIOWrite(im.buf_img, "png", outputFile);
+                    FileLockManager.imageIOWrite(im.buf_img, ImageFormat.FORMAT_PNG, outputFile);
                 } catch (IOException e) {
                     Debug.error("Failed to save image: " + outputFile.getPath(), e);
                 } catch (java.lang.NullPointerException e) {
@@ -315,7 +339,7 @@ public class FlatMap extends MapType {
                     if(!dayfile.getParentFile().exists())
                         dayfile.getParentFile().mkdirs();
                     try {
-                        FileLockManager.imageIOWrite(im_day.buf_img, "png", dayfile);
+                        FileLockManager.imageIOWrite(im_day.buf_img, ImageFormat.FORMAT_PNG, dayfile);
                     } catch (IOException e) {
                         Debug.error("Failed to save image: " + dayfile.getPath(), e);
                     } catch (java.lang.NullPointerException e) {
@@ -419,7 +443,7 @@ public class FlatMap extends MapType {
     public String getPrefix() {
         return prefix;
     }
-    
+
     /* Get maps rendered concurrently with this map in this world */
     public List<MapType> getMapsSharingRender(DynmapWorld w) {
         return Collections.singletonList((MapType)this);
@@ -496,7 +520,7 @@ public class FlatMap extends MapType {
         }
 
         @Override
-        public boolean render(MapChunkCache cache) {
+        public boolean render(MapChunkCache cache, String mapname) {
             return map.render(cache, this, MapManager.mapman.getTileFile(this));
         }
 
@@ -510,6 +534,22 @@ public class FlatMap extends MapType {
             return map.getAdjecentTiles(this);
         }
 
+        @Override
+        public int hashCode() {
+            return x ^ y ^ size ^ map.getName().hashCode();
+        }
+        
+        @Override
+        public boolean equals(Object x) {
+            if(x instanceof FlatMapTile) {
+                return equals((FlatMapTile)x);
+            }
+            return false;
+        }
+        public boolean equals(FlatMapTile o) {
+            return (o.x == x) && (o.y == y) && (o.map == map);
+        }
+        
         @Override
         public String getKey() {
             return world.world.getName() + "." + map.getPrefix();
@@ -519,6 +559,9 @@ public class FlatMap extends MapType {
         public boolean isBiomeDataNeeded() { return false; }
         public boolean isRawBiomeDataNeeded() { return false; }
         public boolean isBlockTypeDataNeeded() { return true; }
+        public int tileOrdinalX() { return x; }
+        public int tileOrdinalY() { return y; }
+
     }
     
     @Override
@@ -538,6 +581,7 @@ public class FlatMap extends MapType {
         s(o, "mapzoomin", c.getInteger("mapzoomin", 3));
         s(o, "mapzoomout", world.getExtraZoomOutLevels());
         s(o, "compassview", "S");   /* Always from south */
+        s(o, "image-format", ImageFormat.FORMAT_PNG.getFileExt());
         a(worldObject, "maps", o);
     }
 }

src/main/java/org/dynmap/hdmap/HDMap.java

@@ -19,6 +19,7 @@ import org.dynmap.utils.MapChunkCache;
 import org.json.simple.JSONObject;
 
 public class HDMap extends MapType {
+
     private String name;
     private String prefix;
     private HDPerspective perspective;
@@ -26,6 +27,11 @@ public class HDMap extends MapType {
     private HDLighting lighting;
     private ConfigurationNode configuration;
     private int mapzoomout;
+    private MapType.ImageFormat imgformat;
+
+    public static final String IMGFORMAT_PNG = "png";
+    public static final String IMGFORMAT_JPG = "jpg";
+    
     
     public HDMap(ConfigurationNode configuration) {
         name = configuration.getString("name", null);
@@ -83,7 +89,19 @@ public class HDMap extends MapType {
             mapzoomout++;
             scale = scale / 2.0;
         }
-    }   
+        String fmt = configuration.getString("image-format", "png");
+        /* Only allow png or jpg */
+        for(ImageFormat f : ImageFormat.values()) {
+            if(fmt.equals(f.getID())) {
+                imgformat = f;
+                break;
+            }
+        }
+        if(imgformat == null) {
+            Log.severe("HDMap '"+name+"' set invalid image-format: " + fmt);
+            imgformat = ImageFormat.FORMAT_PNG;
+        }   
+    }
 
     public HDShader getShader() { return shader; }
     public HDPerspective getPerspective() { return perspective; }
@@ -94,6 +112,11 @@ public class HDMap extends MapType {
         return perspective.getTiles(loc);
     }
 
+    @Override
+    public MapTile[] getTiles(Location loc0, Location loc1) {
+        return perspective.getTiles(loc0, loc1);
+    }
+
     @Override
     public MapTile[] getAdjecentTiles(MapTile tile) {
         return perspective.getAdjecentTiles(tile);
@@ -104,14 +127,6 @@ public class HDMap extends MapType {
         return perspective.getRequiredChunks(tile);
     }
 
-    @Override
-    public boolean render(MapChunkCache cache, MapTile tile, File bogus) {
-        if(tile instanceof HDMapTile)
-            return perspective.render(cache, (HDMapTile)tile);
-        else
-            return false;
-    }
-
     @Override
     public List<String> baseZoomFilePrefixes() {
         ArrayList<String> s = new ArrayList<String>();
@@ -181,6 +196,8 @@ public class HDMap extends MapType {
         return lst;
     }
 
+    @Override
+    public ImageFormat getImageFormat() { return imgformat; }
     
     @Override
     public void buildClientConfiguration(JSONObject worldObject, DynmapWorld world) {
@@ -197,6 +214,7 @@ public class HDMap extends MapType {
         s(o, "bigmap", true);
         s(o, "mapzoomout", (world.getExtraZoomOutLevels()+mapzoomout));
         s(o, "mapzoomin", c.getInteger("mapzoomin", 2));
+        s(o, "image-format", imgformat.getFileExt());
         perspective.addClientConfiguration(o);
         shader.addClientConfiguration(o);
         lighting.addClientConfiguration(o);

src/main/java/org/dynmap/hdmap/HDMapManager.java

@@ -119,7 +119,7 @@ public class HDMapManager {
     /**
      * Initialize shader states for all shaders for given tile
      */
-    public HDShaderState[] getShaderStateForTile(HDMapTile tile, MapChunkCache cache, MapIterator mapiter) {
+    public HDShaderState[] getShaderStateForTile(HDMapTile tile, MapChunkCache cache, MapIterator mapiter, String mapname) {
         DynmapWorld w = MapManager.mapman.worldsLookup.get(tile.getWorld().getName());
         if(w == null) return new HDShaderState[0];
         ArrayList<HDShaderState> shaders = new ArrayList<HDShaderState>();
@@ -127,6 +127,9 @@ public class HDMapManager {
             if(map instanceof HDMap) {
                 HDMap hdmap = (HDMap)map;
                 if(hdmap.getPerspective() == tile.perspective) {
+                    /* If limited to one map, and this isn't it, skip */
+                    if((mapname != null) && (!hdmap.getName().equals(mapname)))
+                        continue;
                     shaders.add(hdmap.getShader().getStateInstance(hdmap, cache, mapiter));
                 }
             }

src/main/java/org/dynmap/hdmap/HDMapTile.java

@@ -3,6 +3,7 @@ package org.dynmap.hdmap;
 import org.dynmap.DynmapChunk;
 import org.dynmap.DynmapWorld;
 import org.dynmap.MapManager;
+import org.dynmap.MapType;
 
 import java.util.List;
 import org.dynmap.MapTile;
@@ -21,25 +22,25 @@ public class HDMapTile extends MapTile {
 
     @Override
     public String getFilename() {
-        return getFilename("hdmap");
+        return getFilename("hdmap", MapType.ImageFormat.FORMAT_PNG);
     }
 
-    public String getFilename(String prefix) {
-        return prefix + "/"  + (tx >> 5) + '_' + (ty >> 5) + '/' + tx + "_" + ty + ".png";
+    public String getFilename(String prefix, MapType.ImageFormat format) {
+        return prefix + "/"  + (tx >> 5) + '_' + (ty >> 5) + '/' + tx + "_" + ty + "." + format.getFileExt();
     }
 
     @Override
     public String getDayFilename() {
-        return getDayFilename("hdmap");
+        return getDayFilename("hdmap", MapType.ImageFormat.FORMAT_PNG);
     }
 
-    public String getDayFilename(String prefix) {
-        return prefix + "_day/"  + (tx >> 5) + '_' + (ty >> 5) + '/' + tx + "_" + ty + ".png";
+    public String getDayFilename(String prefix, MapType.ImageFormat format) {
+        return prefix + "_day/"  + (tx >> 5) + '_' + (ty >> 5) + '/' + tx + "_" + ty + "." + format.getFileExt();
     }
     
     @Override
     public int hashCode() {
-        return perspective.getName().hashCode() ^ getWorld().hashCode();
+        return tx ^ ty ^ perspective.getName().hashCode() ^ getWorld().getName().hashCode();
     }
 
     @Override
@@ -47,11 +48,11 @@ public class HDMapTile extends MapTile {
         if (obj instanceof HDMapTile) {
             return equals((HDMapTile) obj);
         }
-        return super.equals(obj);
+        return false;
     }
 
     public boolean equals(HDMapTile o) {
-        return o.tx == tx && o.ty == ty && o.getWorld().equals(getWorld()) && (perspective.equals(o.perspective));
+        return o.tx == tx && o.ty == ty && (perspective == o.perspective) && (o.getWorld() == getWorld());
     }
 
     public String getKey() {
@@ -75,8 +76,8 @@ public class HDMapTile extends MapTile {
     @Override
     public boolean isBlockTypeDataNeeded() { return MapManager.mapman.hdmapman.isBlockTypeDataNeeded(this); }
     
-    public boolean render(MapChunkCache cache) {
-        return perspective.render(cache, this);
+    public boolean render(MapChunkCache cache, String mapname) {
+        return perspective.render(cache, this, mapname);
     }
     
     public List<DynmapChunk> getRequiredChunks() {
@@ -86,4 +87,8 @@ public class HDMapTile extends MapTile {
     public MapTile[] getAdjecentTiles() {
         return perspective.getAdjecentTiles(this);
     }
+    
+    public int tileOrdinalX() { return tx; }
+    public int tileOrdinalY() { return ty; }
+
 }

src/main/java/org/dynmap/hdmap/HDPerspective.java

@@ -13,12 +13,14 @@ public interface HDPerspective {
     String getName();
     /* Get tiles invalidated by change at given location */
     MapTile[] getTiles(Location loc);
+    /* Get tiles invalidated by change at given volume, defined by 2 opposite corner locations */
+    MapTile[] getTiles(Location loc0, Location loc1);
     /* Get tiles adjacent to given tile */
     MapTile[] getAdjecentTiles(MapTile tile);
     /* Get chunks needed for given tile */
     List<DynmapChunk> getRequiredChunks(MapTile tile);
     /* Render given tile */
-    boolean render(MapChunkCache cache, HDMapTile tile);
+    boolean render(MapChunkCache cache, HDMapTile tile, String mapname);
     
     public boolean isBiomeDataNeeded();
     public boolean isHightestBlockYDataNeeded();

src/main/java/org/dynmap/hdmap/IsoHDPerspective.java

@@ -21,6 +21,7 @@ import org.dynmap.DynmapChunk;
 import org.dynmap.Log;
 import org.dynmap.MapManager;
 import org.dynmap.MapTile;
+import org.dynmap.MapType;
 import org.dynmap.TileHashManager;
 import org.dynmap.debug.Debug;
 import org.dynmap.utils.MapIterator.BlockStep;
@@ -242,8 +243,6 @@ public class IsoHDPerspective implements HDPerspective {
             t = 0;
             /* Compute number of steps and increments for each */
             n = 1;
-
-            int mxout, myout, mzout;
             
             /* If perpendicular to X axis */
             if (dx == 0) {
@@ -552,9 +551,11 @@ public class IsoHDPerspective implements HDPerspective {
             }
         }
         
+        private boolean logit = false;
+        
         private boolean raytraceSubblock(short[] model, boolean firsttime) {
             if(firsttime) {
-            	mt = t + 0.0000001;
+            	mt = t + 0.00000001;
             	xx = top.x + mt *(bottom.x - top.x);  
             	yy = top.y + mt *(bottom.y - top.y);  
             	zz = top.z + mt *(bottom.z - top.z);
@@ -583,7 +584,7 @@ public class IsoHDPerspective implements HDPerspective {
             }
             subalpha = -1;
             boolean skip = !firsttime;	/* Skip first block on continue */
-            while(mt < mtend) {
+            while(mt <= mtend) {
             	if(!skip) {
             		try {
             			int blkalpha = model[modscale*modscale*my + modscale*mz + mx];
@@ -605,8 +606,9 @@ public class IsoHDPerspective implements HDPerspective {
                     mt = mt_next_x;
                     mt_next_x += mdt_dx;
                     laststep = stepx;
-                    if(mx == mxout)
+                    if(mx == mxout) {
                         return true;
+                    }
                 }
                 /* If Y step is next best */
                 else if((mt_next_y <= mt_next_x) && (mt_next_y <= mt_next_z)) {
@@ -614,8 +616,9 @@ public class IsoHDPerspective implements HDPerspective {
                     mt = mt_next_y;
                     mt_next_y += mdt_dy;
                     laststep = stepy;
-                    if(my == myout)
+                    if(my == myout) {
                         return true;
+                    }
                 }
                 /* Else, Z step is next best */
                 else {
@@ -623,22 +626,28 @@ public class IsoHDPerspective implements HDPerspective {
                     mt = mt_next_z;
                     mt_next_z += mdt_dz;
                     laststep = stepz;
-                    if(mz == mzout) 
+                    if(mz == mzout) {
                         return true;
+                    }
                 }
             }
             return true;
         }
         public final int[] getSubblockCoord() {
-            double tt = t + 0.000001;
-            if(subalpha >= 0)
-                tt = mt;
-            double xx = top.x + tt * (bottom.x - top.x);  
-            double yy = top.y + tt * (bottom.y - top.y);  
-            double zz = top.z + tt * (bottom.z - top.z);
-            subblock_xyz[0] = (int)((xx - Math.floor(xx)) * modscale);
-            subblock_xyz[1] = (int)((yy - Math.floor(yy)) * modscale);
-            subblock_xyz[2] = (int)((zz - Math.floor(zz)) * modscale);
+            if(subalpha < 0) {
+                double tt = t + 0.0000001;
+                double xx = top.x + tt * (bottom.x - top.x);  
+                double yy = top.y + tt * (bottom.y - top.y);  
+                double zz = top.z + tt * (bottom.z - top.z);
+                subblock_xyz[0] = (int)((xx - Math.floor(xx)) * modscale);
+                subblock_xyz[1] = (int)((yy - Math.floor(yy)) * modscale);
+                subblock_xyz[2] = (int)((zz - Math.floor(zz)) * modscale);
+            }
+            else {
+                subblock_xyz[0] = mx;
+                subblock_xyz[1] = my;
+                subblock_xyz[2] = mz;
+            }
             return subblock_xyz;
         }
     }
@@ -717,6 +726,68 @@ public class IsoHDPerspective implements HDPerspective {
         return tiles.toArray(new MapTile[tiles.size()]);
     }
 
+    @Override
+    public MapTile[] getTiles(Location loc0, Location loc1) {
+        DynmapWorld world = MapManager.mapman.getWorld(loc0.getWorld().getName());
+        HashSet<MapTile> tiles = new HashSet<MapTile>();
+        Vector3D blocks[] = new Vector3D[] { new Vector3D(), new Vector3D() };
+        /* Get ordered point - 0=minX,Y,Z, 1=maxX,Y,Z */
+        if(loc0.getBlockX() < loc1.getBlockX()) {
+            blocks[0].x = loc0.getBlockX();
+            blocks[1].x = loc1.getBlockX() + 1;
+        }
+        else {
+            blocks[0].x = loc1.getBlockX();
+            blocks[1].x = loc0.getBlockX() + 1;
+        }
+        if(loc0.getBlockY() < loc1.getBlockY()) {
+            blocks[0].y = loc0.getBlockY();
+            blocks[1].y = loc1.getBlockY() + 1;
+        }
+        else {
+            blocks[0].y = loc1.getBlockY();
+            blocks[1].y = loc0.getBlockY() + 1;
+        }
+        if(loc0.getBlockZ() < loc1.getBlockZ()) {
+            blocks[0].z = loc0.getBlockZ();
+            blocks[1].z = loc1.getBlockZ() + 1;
+        }
+        else {
+            blocks[0].z = loc1.getBlockZ();
+            blocks[1].z = loc0.getBlockZ() + 1;
+        }        
+        Vector3D corner = new Vector3D();
+        Vector3D tcorner = new Vector3D();
+        int mintilex = Integer.MAX_VALUE;
+        int maxtilex = Integer.MIN_VALUE;
+        int mintiley = Integer.MAX_VALUE;
+        int maxtiley = Integer.MIN_VALUE;
+        /* Loop through corners of the prism */
+        for(int i = 0; i < 2; i++) {
+            corner.x = blocks[i].x;
+            for(int j = 0; j < 2; j++) {
+                corner.y = blocks[j].y;
+                for(int k = 0; k < 2; k++) {
+                    corner.z = blocks[k].z;
+                    world_to_map.transform(corner, tcorner);  /* Get map coordinate of corner */
+                    int tx = (int)Math.floor(tcorner.x/tileWidth);
+                    int ty = (int)Math.floor(tcorner.y/tileWidth);
+                    if(mintilex > tx) mintilex = tx;
+                    if(maxtilex < tx) maxtilex = tx;
+                    if(mintiley > ty) mintiley = ty;
+                    if(maxtiley < ty) maxtiley = ty;
+                }
+            }
+        }
+        /* Now, add the tiles for the ranges - not perfect, but it works (some extra tiles on corners possible) */
+        for(int i = mintilex; i <= maxtilex; i++) {
+            for(int j = mintiley; j <= maxtiley; j++) {
+                addTile(tiles, world, i, j);
+            }
+        }
+        return tiles.toArray(new MapTile[tiles.size()]);
+    }
+
     @Override
     public MapTile[] getAdjecentTiles(MapTile tile) {
         HDMapTile t = (HDMapTile) tile;
@@ -879,11 +950,11 @@ public class IsoHDPerspective implements HDPerspective {
     }
 
     @Override
-    public boolean render(MapChunkCache cache, HDMapTile tile) {
+    public boolean render(MapChunkCache cache, HDMapTile tile, String mapname) {
         Color rslt = new Color();
         MapIterator mapiter = cache.getIterator(0, 0, 0);
         /* Build shader state object for each shader */
-        HDShaderState[] shaderstate = MapManager.mapman.hdmapman.getShaderStateForTile(tile, cache, mapiter);
+        HDShaderState[] shaderstate = MapManager.mapman.hdmapman.getShaderStateForTile(tile, cache, mapiter, mapname);
         int numshaders = shaderstate.length;
         if(numshaders == 0)
             return false;
@@ -959,7 +1030,8 @@ public class IsoHDPerspective implements HDPerspective {
             String prefix = shaderstate[i].getMap().getPrefix();
             if(rendered[i]) {
                 renderone = true;
-                String fname = tile.getFilename(prefix);
+                MapType.ImageFormat fmt = shaderstate[i].getMap().getImageFormat();
+                String fname = tile.getFilename(prefix, fmt);
                 File f = new File(tile.getDynmapWorld().worldtilepath, fname);
                 FileLockManager.getWriteLock(f);
                 try {
@@ -969,7 +1041,7 @@ public class IsoHDPerspective implements HDPerspective {
                         if(!f.getParentFile().exists())
                             f.getParentFile().mkdirs();
                         try {
-                            FileLockManager.imageIOWrite(im[i].buf_img, "png", f);
+                            FileLockManager.imageIOWrite(im[i].buf_img, fmt, f);
                         } catch (IOException e) {
                             Debug.error("Failed to save image: " + f.getPath(), e);
                         } catch (java.lang.NullPointerException e) {
@@ -990,7 +1062,7 @@ public class IsoHDPerspective implements HDPerspective {
                 MapManager.mapman.updateStatistics(tile, prefix, true, tile_update, !rendered[i]);
                 /* Handle day image, if needed */
                 if(dayim[i] != null) {
-                    fname = tile.getDayFilename(prefix);
+                    fname = tile.getDayFilename(prefix, fmt);
                     f = new File(tile.getDynmapWorld().worldtilepath, fname);
                     FileLockManager.getWriteLock(f);
                     prefix = prefix+"_day";
@@ -1002,7 +1074,7 @@ public class IsoHDPerspective implements HDPerspective {
                             if(!f.getParentFile().exists())
                                 f.getParentFile().mkdirs();
                             try {
-                                FileLockManager.imageIOWrite(dayim[i].buf_img, "png", f);
+                                FileLockManager.imageIOWrite(dayim[i].buf_img, fmt, f);
                             } catch (IOException e) {
                                 Debug.error("Failed to save image: " + f.getPath(), e);
                             } catch (java.lang.NullPointerException e) {

src/main/java/org/dynmap/hdmap/TexturePack.java

@@ -54,6 +54,7 @@ public class TexturePack {
     private static final String CUSTOMWATERSTILL_PNG = "custom_water_still.png";
     private static final String CUSTOMWATERFLOWING_PNG = "custom_water_flowing.png";
 
+	private static final String STANDARDTP = "standard";
     /* Color modifier codes (x1000 for value in mapping code) */
     private static final int COLORMOD_NONE = 0;
     private static final int COLORMOD_GRASSTONED = 1;
@@ -71,6 +72,8 @@ public class TexturePack {
     
     /* Special tile index values */
     private static final int BLOCKINDEX_BLANK = -1;
+    private static final int BLOCKINDEX_GRASSMASK = 38;
+    private static final int BLOCKINDEX_PISTONSIDE = 108;
     private static final int BLOCKINDEX_REDSTONE_NSEW_TONE = 164;
     private static final int BLOCKINDEX_REDSTONE_EW_TONE = 165;
     private static final int BLOCKINDEX_REDSTONE_NSEW = 180;
@@ -79,7 +82,9 @@ public class TexturePack {
     private static final int BLOCKINDEX_MOVINGWATER = 258;
     private static final int BLOCKINDEX_STATIONARYLAVA = 259;
     private static final int BLOCKINDEX_MOVINGLAVA = 260;
-    private static final int MAX_BLOCKINDEX = 260;
+    private static final int BLOCKINDEX_PISTONEXTSIDE = 261;
+    private static final int BLOCKINDEX_PISTONSIDE_EXT = 262;
+    private static final int MAX_BLOCKINDEX = 262;
     private static final int BLOCKTABLELEN = MAX_BLOCKINDEX+1;
 
     private static class LoadedImage {
@@ -190,36 +195,57 @@ public class TexturePack {
             /* Try to open zip */
             zf = new ZipFile(f);
             /* Find and load terrain.png */
+            InputStream is;
             ZipEntry ze = zf.getEntry(TERRAIN_PNG); /* Try to find terrain.png */
             if(ze == null) {
-                throw new FileNotFoundException();
+                /* Check for terrain.png under standard texture pack*/
+                File ff = new File(texturedir, STANDARDTP + "/" + TERRAIN_PNG);
+                is = new FileInputStream(ff);
+            }
+            else {
+            	is = zf.getInputStream(ze); /* Get input stream for terrain.png */
             }
-            InputStream is = zf.getInputStream(ze); /* Get input stream for terrain.png */
             loadTerrainPNG(is);
             is.close();
             /* Try to find and load misc/grasscolor.png */
             ze = zf.getEntry(GRASSCOLOR_PNG);
-            if(ze == null)
-                throw new FileNotFoundException();
-            is = zf.getInputStream(ze);
-            loadBiomeShadingImage(is, IMG_GRASSCOLOR);
-            is.close();
+            if(ze == null) {	/* Fall back to standard file */
+                /* Check for misc/grasscolor.png under standard texture pack*/
+                File ff = new File(texturedir, STANDARDTP + "/" + GRASSCOLOR_PNG);
+                is = new FileInputStream(ff);
+            }
+            else {
+            	is = zf.getInputStream(ze);
+            }
+        	loadBiomeShadingImage(is, IMG_GRASSCOLOR);
+        	is.close();
             /* Try to find and load misc/foliagecolor.png */
             ze = zf.getEntry(FOLIAGECOLOR_PNG);
-            if(ze == null)
-                throw new FileNotFoundException();
-            is = zf.getInputStream(ze);
-            loadBiomeShadingImage(is, IMG_FOLIAGECOLOR);
-            is.close();
+            if(ze == null) {
+                /* Check for misc/foliagecolor.png under standard texture pack*/
+                File ff = new File(texturedir, STANDARDTP + "/" + FOLIAGECOLOR_PNG);
+                is = new FileInputStream(ff);
+            }
+            else {
+            	is = zf.getInputStream(ze);
+            }
+        	loadBiomeShadingImage(is, IMG_FOLIAGECOLOR);
+        	is.close();
+           
             /* Try to find and load misc/water.png */
             ze = zf.getEntry(WATER_PNG);
-            if(ze == null)
-                throw new FileNotFoundException();
-            is = zf.getInputStream(ze);
-            loadImage(is, IMG_WATER);
+            if(ze == null) {
+                File ff = new File(texturedir, STANDARDTP + "/" + WATER_PNG);
+                is = new FileInputStream(ff);
+            }
+            else {
+            	is = zf.getInputStream(ze);
+            }
+        	loadImage(is, IMG_WATER);
             patchTextureWithImage(IMG_WATER, BLOCKINDEX_STATIONARYWATER);
             patchTextureWithImage(IMG_WATER, BLOCKINDEX_MOVINGWATER);
-            is.close();
+        	is.close();
+
             /* Optional files - process if they exist */
             ze = zf.getEntry(CUSTOMLAVAFLOWING_PNG);
             if(ze != null) {
@@ -258,21 +284,33 @@ public class TexturePack {
         try {
             /* Open and load terrain.png */
             f = new File(texturedir, tpname + "/" + TERRAIN_PNG);
+            if(!f.canRead()) {
+                f = new File(texturedir, STANDARDTP + "/" + TERRAIN_PNG);            	
+            }
             fis = new FileInputStream(f);
             loadTerrainPNG(fis);
             fis.close();
             /* Check for misc/grasscolor.png */
             f = new File(texturedir, tpname + "/" + GRASSCOLOR_PNG);
+            if(!f.canRead()) {
+                f = new File(texturedir, STANDARDTP + "/" + GRASSCOLOR_PNG);            	
+            }
             fis = new FileInputStream(f);
             loadBiomeShadingImage(fis, IMG_GRASSCOLOR);
             fis.close();
             /* Check for misc/foliagecolor.png */
             f = new File(texturedir, tpname + "/" + FOLIAGECOLOR_PNG);
+            if(!f.canRead()) {
+                f = new File(texturedir, STANDARDTP + "/" + FOLIAGECOLOR_PNG);            	
+            }
             fis = new FileInputStream(f);
             loadBiomeShadingImage(fis, IMG_FOLIAGECOLOR);
             fis.close();
             /* Check for misc/water.png */
             f = new File(texturedir, tpname + "/" + WATER_PNG);
+            if(!f.canRead()) {
+                f = new File(texturedir, STANDARDTP + "/" + WATER_PNG);            	
+            }
             fis = new FileInputStream(f);
             loadImage(fis, IMG_WATER);
             patchTextureWithImage(IMG_WATER, BLOCKINDEX_STATIONARYWATER);
@@ -329,8 +367,9 @@ public class TexturePack {
     
     /* Load terrain.png */
     private void loadTerrainPNG(InputStream is) throws IOException {
-        int i;
+        int i, j;
         /* Load image */
+        ImageIO.setUseCache(false);
         BufferedImage img = ImageIO.read(is);
         if(img == null) { throw new FileNotFoundException(); }
         terrain_width = img.getWidth();
@@ -364,12 +403,34 @@ public class TexturePack {
                 terrain_argb[BLOCKINDEX_REDSTONE_EW][i] = tc.getARGB();
             }
         }
+        /* Build extended piston side texture - take top 1/4 of piston side, use to make piston extension */
+        terrain_argb[BLOCKINDEX_PISTONEXTSIDE] = new int[native_scale*native_scale];
+        System.arraycopy(terrain_argb[BLOCKINDEX_PISTONSIDE], 0, terrain_argb[BLOCKINDEX_PISTONEXTSIDE], 0,
+                         native_scale * native_scale / 4);
+        for(i = 0; i < native_scale/4; i++) {
+            for(j = 0; j < (3*native_scale/4); j++) {
+                terrain_argb[BLOCKINDEX_PISTONEXTSIDE][native_scale*(native_scale/4 + j) + (3*native_scale/8 + i)] =
+                    terrain_argb[BLOCKINDEX_PISTONSIDE][native_scale*i + j];
+            }
+        }
+        /* Build piston side while extended (cut off top 1/4, replace with rotated top for extension */
+        terrain_argb[BLOCKINDEX_PISTONSIDE_EXT] = new int[native_scale*native_scale];
+        System.arraycopy(terrain_argb[BLOCKINDEX_PISTONSIDE], native_scale*native_scale/4, 
+                         terrain_argb[BLOCKINDEX_PISTONSIDE_EXT], native_scale*native_scale/4,
+                         3 * native_scale * native_scale / 4);  /* Copy bottom 3/4 */
+        for(i = 0; i < native_scale/4; i++) {
+            for(j = 3*native_scale/4; j < native_scale; j++) {
+                terrain_argb[BLOCKINDEX_PISTONSIDE_EXT][native_scale*(j - 3*native_scale/4) + (3*native_scale/8 + i)] =
+                    terrain_argb[BLOCKINDEX_PISTONSIDE][native_scale*i + j];
+            }
+        }
         img.flush();
     }
     
     /* Load image into image array */
     private void loadImage(InputStream is, int idx) throws IOException {
         /* Load image */
+    	ImageIO.setUseCache(false);
         BufferedImage img = ImageIO.read(is);
         if(img == null) { throw new FileNotFoundException(); }
         imgs[idx] = new LoadedImage();
@@ -451,6 +512,8 @@ public class TexturePack {
             tp.terrain_argb[idx] = new int[tp.native_scale*tp.native_scale];
             scaleTerrainPNGSubImage(native_scale, tp.native_scale, terrain_argb[idx],  tp.terrain_argb[idx]);
         }
+        /* Special case - some textures are used as masks - need pure alpha (00 or FF) */
+        makeAlphaPure(tp.terrain_argb[BLOCKINDEX_GRASSMASK]); /* Grass side mask */
     }
     private static void scaleTerrainPNGSubImage(int srcscale, int destscale, int[] src_argb, int[] dest_argb) {
         int nativeres = srcscale;
@@ -499,15 +562,18 @@ public class TexturePack {
                             if(wy == 0) continue;
                             /* Accumulate */
                             c.setARGB(src_argb[(ind_y+yy)*nativeres + ind_x + xx]);
-                            accum_red += c.getRed() * wx * wy;
-                            accum_green += c.getGreen() * wx * wy;
-                            accum_blue += c.getBlue() * wx * wy;
-                            accum_alpha += c.getAlpha() * wx * wy;
+                            int a = c.getAlpha();
+                            accum_red += c.getRed() * a * wx * wy;
+                            accum_green += c.getGreen() * a* wx * wy;
+                            accum_blue += c.getBlue() * a * wx * wy;
+                            accum_alpha += a * wx * wy;
                         }
                     }
+                    int newalpha = accum_alpha / (nativeres*nativeres);
+                    if(newalpha == 0) newalpha = 1;
                     /* Generate weighted compnents into color */
-                    c.setRGBA(accum_red / (nativeres*nativeres), accum_green / (nativeres*nativeres), 
-                              accum_blue / (nativeres*nativeres), accum_alpha / (nativeres*nativeres));
+                    c.setRGBA(accum_red / (nativeres*nativeres*newalpha), accum_green / (nativeres*nativeres*newalpha), 
+                              accum_blue / (nativeres*nativeres*newalpha), accum_alpha / (nativeres*nativeres));
                     dest_argb[(y*res) + x] = c.getARGB();
                 }
             }
@@ -548,10 +614,11 @@ public class TexturePack {
                         for(int yy = 0; yy < 2; yy++) {
                             int wy = (yy==0)?wgt_y:(res-wgt_y);
                             if(wy == 0) continue;
-                            accum_red[(ind_y+yy)*res + (ind_x+xx)] += c.getRed() * wx * wy;
-                            accum_green[(ind_y+yy)*res + (ind_x+xx)] += c.getGreen() * wx * wy;
-                            accum_blue[(ind_y+yy)*res + (ind_x+xx)] += c.getBlue() * wx * wy;
-                            accum_alpha[(ind_y+yy)*res + (ind_x+xx)] += c.getAlpha() * wx * wy;
+                            int a = c.getAlpha();
+                            accum_red[(ind_y+yy)*res + (ind_x+xx)] += c.getRed() * a * wx * wy;
+                            accum_green[(ind_y+yy)*res + (ind_x+xx)] += c.getGreen() * a * wx * wy;
+                            accum_blue[(ind_y+yy)*res + (ind_x+xx)] += c.getBlue() * a * wx * wy;
+                            accum_alpha[(ind_y+yy)*res + (ind_x+xx)] += a * wx * wy;
                         }
                     }
                 }
@@ -560,8 +627,10 @@ public class TexturePack {
             for(int y = 0; y < res; y++) {
                 for(int x = 0; x < res; x++) {
                     int off = (y*res) + x;
-                    c.setRGBA(accum_red[off]/(nativeres*nativeres), accum_green[off]/(nativeres*nativeres),
-                          accum_blue[off]/(nativeres*nativeres), accum_alpha[off]/(nativeres*nativeres));
+                    int aa = accum_alpha[off] / (nativeres*nativeres);
+                    if(aa == 0) aa = 1;
+                    c.setRGBA(accum_red[off]/(aa*nativeres*nativeres), accum_green[off]/(aa*nativeres*nativeres),
+                          accum_blue[off]/(aa*nativeres*nativeres), accum_alpha[off] / (nativeres*nativeres));
                     dest_argb[y*res + x] = c.getARGB();
                 }
             }
@@ -575,6 +644,7 @@ public class TexturePack {
             }
         }
         BufferedImage img = DynmapBufferedImage.createBufferedImage(outbuf, terrain_width, terrain_height);
+        ImageIO.setUseCache(false);
         ImageIO.write(img, "png", f);
     }
 
@@ -847,9 +917,9 @@ public class TexturePack {
                     textid = 68;
                 }
                 else {  /* Else, check the grass color overlay */
-                    int ovclr = terrain_argb[38][v*native_scale+u];
+                    int ovclr = terrain_argb[BLOCKINDEX_GRASSMASK][v*native_scale+u];
                     if((ovclr & 0xFF000000) != 0) { /* Hit? */
-                        texture = terrain_argb[38]; /* Use it */
+                        texture = terrain_argb[BLOCKINDEX_GRASSMASK]; /* Use it */
                         textop = COLORMOD_GRASSTONED;   /* Force grass toning */
                     }
                 }
@@ -885,8 +955,18 @@ public class TexturePack {
     }
     
     private static final int biomeLookup(int[] argb, int width, double rainfall, double temp) {
-        int t = (int)((1.0-temp)*(width-1));
-        int h = width - (int)(temp*rainfall*(width-1)) - 1;
+        int w = width-1;
+        int t = (int)((1.0-temp)*w);
+        int h = (int)((1.0 - (temp*rainfall))*w);
+        if(h > w) h = w;
+        if(t > w) t = w;
         return argb[width*h + t];
     }
+    
+    private static final void makeAlphaPure(int[] argb) {
+        for(int i = 0; i < argb.length; i++) {
+            if((argb[i] & 0xFF000000) != 0)
+                argb[i] |= 0xFF000000;
+        }
+    }
 }

src/main/java/org/dynmap/hdmap/TexturePackHDShader.java

@@ -131,6 +131,7 @@ public class TexturePackHDShader implements HDShader {
             if(blocktype == 0) {
                 return false;
             }
+            
             /* Get color from textures */
             scaledtp.readColor(ps, mapiter, c, blocktype, lastblocktype, do_biome_shading);
 
@@ -155,13 +156,14 @@ public class TexturePackHDShader implements HDShader {
                 /* Handle light level, if needed */
                 lighting.applyLighting(ps, this, c, tmpcolor);
                 /* If we got alpha from subblock model, use it instead if it is lower */
-                if(subalpha >= 0) {
-                    for(Color clr : tmpcolor) {
-                    	int a = clr.getAlpha();
-                    	if(subalpha < a)
-                    		clr.setAlpha(subalpha);
-                    }
-                }
+                /* (disable for now: weighting is wrong, as crosssection is 2D, not 3D based) */
+//                if(subalpha >= 0) {
+//                    for(Color clr : tmpcolor) {
+//                    	int a = clr.getAlpha();
+//                    	if(subalpha < a)
+//                    		clr.setAlpha(subalpha);
+//                    }
+//                }
                 /* If no previous color contribution, use new color */
                 if(color[0].isTransparent()) {
                     for(int i = 0; i < color.length; i++)

src/main/java/org/dynmap/herochat/HeroChatHandler.java

@@ -258,8 +258,7 @@ public class HeroChatHandler {
         }
         else {
             /* Set up to hear when HeroChat is enabled */
-            server.getPluginManager().registerEvent(Event.Type.PLUGIN_ENABLE,
-                new OurPluginListener(), Event.Priority.Normal, plugin);
+            plugin.registerEvent(Event.Type.PLUGIN_ENABLE, new OurPluginListener());
         }
     }
 
@@ -277,8 +276,7 @@ public class HeroChatHandler {
             return;
         }
         /* Register event handler */
-        plugin.getServer().getPluginManager().registerEvent(Event.Type.CUSTOM_EVENT,
-                new OurEventListener(), Event.Priority.Monitor, plugin);
+        plugin.registerEvent(Event.Type.CUSTOM_EVENT, new OurEventListener());
         Log.verboseinfo("HeroChat integration active");
     }
     /**