Committed block lag fix.

README.txt

@@ -100,6 +100,9 @@ WorldProtect on your server. You can either restart your server or use
     to disable this feature. Enabling disable-all-fire-spread will
     override this function.
 
+- block-lag-fix (def. false)
+    Attempts to fix block lag.
+
 Blacklists
 ----------
 

manifest.mf

@@ -1,2 +1,2 @@
 Manifest-Version: 1.0
-WorldProtect-Version: 1.0
+WorldProtect-Version: 1.1

src/WorldProtectListener.java

@@ -27,6 +27,7 @@ import java.util.Map;
 import java.util.HashMap;
 import java.util.List;
 import java.util.ArrayList;
+import java.util.Random;
 import java.io.*;
 import com.sk89q.worldprotect.*;
 import java.util.logging.FileHandler;
@@ -45,6 +46,10 @@ public class WorldProtectListener extends PluginListener {
      * Properties file for CraftBook.
      */
     private PropertiesFile properties = new PropertiesFile("worldprotect.properties");
+    /**
+     * Random number generator.
+     */
+    private static Random rand = new Random();
 
     private boolean enforceOneSession;
     private boolean blockCreepers;
@@ -53,6 +58,7 @@ public class WorldProtectListener extends PluginListener {
     private boolean preventLavaFire;
     private boolean disableAllFire;
     private boolean simulateSponge;
+    private boolean blockLagFix;
     private Set<Integer> fireNoSpreadBlocks;
     private Set<Integer> allowedLavaSpreadOver;
     private boolean classicWater;
@@ -105,6 +111,7 @@ public class WorldProtectListener extends PluginListener {
         allowedLavaSpreadOver = toBlockIDSet(properties.getString("allowed-lava-spread-blocks", ""));
         classicWater = properties.getBoolean("classic-water", false);
         simulateSponge = properties.getBoolean("simulate-sponge", false);
+        blockLagFix = properties.getBoolean("block-lag-fix", false);
 
         try {
             blacklist = loadBlacklist(new File("worldprotect-blacklist.txt"));
@@ -196,6 +203,8 @@ public class WorldProtectListener extends PluginListener {
      * @return
      */
     public boolean onBlockDestroy(Player player, Block block) {
+        int type = block.getType();
+        
         if (blacklist != null) {
             BlacklistEntry entry = blacklist.get(player.getItemInHand());
             if (entry != null) {
@@ -211,6 +220,73 @@ public class WorldProtectListener extends PluginListener {
                 }
             }
         }
+
+        if (blockLagFix
+                && type != 64 // Wooden door
+                && type != 71 // Iron door
+                && type != 77 // Stone button
+                && type != 69 // Lever
+                && type != 7 // Bedrock
+                && type != 51 // Fire
+                && type != 46 // TNT
+                && type != 59 // Crops
+                && type != 62 // Burning furnace
+                && type != 50 // Torch
+                && type != 75 // Redstone torch
+                && type != 76 // Redstone torch
+                ) {
+
+            if (block.getStatus() == 3) {
+                int dropped = type;
+                int count = 1;
+
+                if (type == 1) { dropped = 4; } // Stone
+                else if (type == 2) { dropped = 3; } // Grass
+                else if (type == 16) { dropped = 263; } // Coal ore
+                else if (type == 18) { // Leaves
+                    if (rand.nextDouble() > 0.95) {
+                        dropped = 6;
+                    } else {
+                        dropped = 0;
+                    }
+                }
+                else if (type == 47) { dropped = 0; } // Bookshelves
+                else if (type == 52) { dropped = 0; } // Mob spawner
+                else if (type == 53) { dropped = 5; } // Wooden stairs
+                else if (type == 55) { dropped = 5; } // Redstone wire
+                else if (type == 56) { dropped = 264; } // Diamond ore
+                else if (type == 60) { dropped = 3; } // Soil
+                else if (type == 63) { dropped = 323; } // Sign post
+                else if (type == 67) { dropped = 4; } // Cobblestone stairs
+                else if (type == 68) { dropped = 323; } // Wall sign
+                else if (type == 73) { dropped = 331; count = 4; } // Redstone ore
+                else if (type == 74) { dropped = 331; count = 4; } // Glowing redstone ore
+                else if (type == 75) { dropped = 76; count = 4; } // Redstone torch
+                else if (type == 79) { dropped = 0; count = 4; } // Ice
+                else if (type == 82) { dropped = 337; count = 4; } // Clay
+                else if (type == 83) { dropped = 338; count = 4; } // Reed
+		else if (type == 89) { dropped = 348; } // Lightstone
+
+                if (dropped > 0) {
+                    etc.getServer().setBlockAt(0, block.getX(), block.getY(), block.getZ());
+
+                    for (int i = 0; i < count; i++) {
+                        etc.getServer().dropItem(block.getX(), block.getY(), block.getZ(),
+                                dropped, i);
+                    }
+
+                    // Drop flint with gravel
+                    if (type == 13) {
+                        if (rand.nextDouble() > 0.95) {
+                            etc.getServer().dropItem(block.getX(), block.getY(), block.getZ(),
+                                    318, 1);
+                        }
+                    }
+                }
+            }
+
+            return true;
+        }
         
         return false;
     }