Add 'explosion' update trigger, add updated tile queue accelerator (to speed up processing if queue gets above a given threshold)

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) {
@@ -83,7 +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/DynmapPlugin.java

@@ -27,6 +27,7 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.event.CustomEventListener;
 import org.bukkit.event.Event;
+import org.bukkit.event.Event.Type;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockBreakEvent;
 import org.bukkit.event.block.BlockBurnEvent;
@@ -38,6 +39,8 @@ import org.bukkit.event.block.BlockPistonRetractEvent;
 import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.block.BlockSpreadEvent;
 import org.bukkit.event.block.LeavesDecayEvent;
+import org.bukkit.event.entity.EntityExplodeEvent;
+import org.bukkit.event.entity.EntityListener;
 import org.bukkit.event.player.PlayerChatEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerListener;
@@ -355,7 +358,7 @@ public class DynmapPlugin extends JavaPlugin {
     private boolean onplayermove;
     private boolean ongeneratechunk;
     private boolean onloadchunk;
-
+    private boolean onexplosion;
 
     public void registerEvents() {
 
@@ -517,26 +520,25 @@ public class DynmapPlugin extends JavaPlugin {
         if(onplayermove)
             registerEvent(Event.Type.PLAYER_MOVE, playerTrigger);
 
-        /* Register world event triggers */
-        ongeneratechunk = isTrigger("chunkgenerated");
-        if(ongeneratechunk) {
-            try {   /* Test if new enough bukkit to allow this */
-                ChunkLoadEvent.class.getDeclaredMethod("isNewChunk", new Class[0]);
-            } catch (NoSuchMethodException nsmx) {
-                Log.info("Warning: CraftBukkit build does not support function needed for 'chunkgenerated' trigger - disabling");
-                ongeneratechunk = false;
+        /* Register entity event triggers */
+        EntityListener entityTrigger = new EntityListener() {
+            @Override
+            public void onEntityExplode(EntityExplodeEvent event) {
+                List<Block> blocks = event.blockList();
+                for(Block b: blocks) {
+                    Location loc = b.getLocation();
+                    mapManager.sscache.invalidateSnapshot(loc);
+                    if(onexplosion) {
+                        mapManager.touch(loc);
+                    }
+                }
             }
-        }
-        onloadchunk = isTrigger("chunkloaded");
-        if(onloadchunk) { 
-            generate_only = false;
-        }
-        else if (ongeneratechunk) {
-            generate_only = true;
-        }
-        registerEvent(Event.Type.CHUNK_LOAD, ourWorldEventHandler);
-
-        // To link configuration to real loaded worlds.
+        };
+        onexplosion = isTrigger("explosion");
+        registerEvent(Event.Type.ENTITY_EXPLODE, entityTrigger);
+        
+        
+        /* Register world event triggers */
         WorldListener worldTrigger = new WorldListener() {
             @Override
             public void onChunkLoad(ChunkLoadEvent event) {
@@ -558,6 +560,26 @@ public class DynmapPlugin extends JavaPlugin {
                 mapManager.activateWorld(event.getWorld());
             }
         };
+
+        ongeneratechunk = isTrigger("chunkgenerated");
+        if(ongeneratechunk) {
+            try {   /* Test if new enough bukkit to allow this */
+                ChunkLoadEvent.class.getDeclaredMethod("isNewChunk", new Class[0]);
+            } catch (NoSuchMethodException nsmx) {
+                Log.info("Warning: CraftBukkit build does not support function needed for 'chunkgenerated' trigger - disabling");
+                ongeneratechunk = false;
+            }
+        }
+        onloadchunk = isTrigger("chunkloaded");
+        if(onloadchunk) { 
+            generate_only = false;
+        }
+        else if (ongeneratechunk) {
+            generate_only = true;
+        }
+        registerEvent(Event.Type.CHUNK_LOAD, worldTrigger);
+
+        // To link configuration to real loaded worlds.
         registerEvent(Event.Type.WORLD_LOAD, worldTrigger);
     }
 
@@ -1046,6 +1068,21 @@ public class DynmapPlugin extends JavaPlugin {
         }
     };
     
+    private EntityListener ourEntityEventHandler = new EntityListener() {
+        @Override
+        public void onEntityExplode(EntityExplodeEvent event) {
+            if(event.isCancelled())
+                return;
+            /* Call listeners */
+            List<Listener> ll = event_handlers.get(event.getType());
+            if(ll != null) {
+                for(Listener l : ll) {
+                    ((EntityListener)l).onEntityExplode(event);
+                }
+            }
+        }
+    };
+    
     /**
      * Register event listener - this will be cleaned up properly on a /dynmap reload, unlike
      * registering with Bukkit directly
@@ -1080,6 +1117,9 @@ public class DynmapPlugin extends JavaPlugin {
                 case CUSTOM_EVENT:
                     pm.registerEvent(type, ourCustomEventHandler, Event.Priority.Monitor, this);
                     break;
+                case ENTITY_EXPLODE:
+                    pm.registerEvent(type, ourEntityEventHandler, Event.Priority.Monitor, this);
+                    break;
                 default:
                     Log.severe("registerEvent() in DynmapPlugin does not handle " + type);
                     return;

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

@@ -488,12 +488,16 @@ public class MapManager {
         sscache = new SnapshotCache(configuration.getInteger("snapshotcachesize", 500));
         parallelrendercnt = configuration.getInteger("parallelrendercnt", 0);
         
-        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);

src/main/resources/configuration.txt

@@ -111,8 +111,14 @@ display-whitelist: false
 # How often a tile gets rendered (in seconds).
 renderinterval: 1
 
+# How many tiles on update queue before accelerate render interval
+renderacceleratethreshold: 60
+
+# How often to render tiles when backlog is above renderacceleratethreshold
+renderaccelerateinterval: 0.2
+
 # Zoom-out tile update period - how often to scan for and process tile updates into zoom-out tiles (in seconds)
-zoomoutperiod: 60
+zoomoutperiod: 30
 
 # Tile hashing is used to minimize tile file updates when no changes have occurred - set to false to disable
 enabletilehash: true
@@ -130,6 +136,7 @@ render-triggers:
   - blockfaded
   - blockspread
   - pistonmoved
+  - explosion
 
 # The path where the tile-files are placed.
 tilespath: web/tiles