Added option to prevent block damage created by flowing water (Minecart tracks, Redstone wire, etc.)

README.txt

@@ -19,15 +19,14 @@ use or not:
 - Restrict lava spreading to only some block types.
 - Simulate classic-esque water by letting water infinitely expand in
     area (only if there is a block underneath).
+- Prevent water from destroying blocks like Redstone wire and flowers.
 - Simulate the function of the sponge from Minecraft Classic.
 - Notify admins, block, log, kick or ban for the use of certain block types
     or items.
 - Temporarily stop fire globally with some commands.
 - Destroy tools on drop to alleviate the durability cheat.
-- OR just fix the durability bug. *Requires special version of hMod
-- Prevent gravel and sand from falling. *Requires special version of hMod
+- Prevent gravel and sand from falling.
 - Allow portal blocks to be placed anywhere.
-  *Requires special version of hMod
 
 hMod is required as WorldGuard is a plugin for hMod.
 
@@ -113,6 +112,10 @@ unsupported by your version of hMod.
     to disable this feature. Enabling disable-all-fire-spread will
     override this function.
 
+- disable-water-damage-blocks (no default)
+    List of blocks that should not be destroyed by water (Redstone wire,
+    minecart tracks, flowers, etc.).
+
 - item-drop-blacklist (no default)
     List of block names/IDs to destroy on drop. This can alleviate the
     durability cheat that allows you to drop your tools to fix their

src/WorldGuard.java

@@ -106,6 +106,9 @@ public void initialize() {
         if (!registerHook("DAMAGE", PluginListener.Priority.MEDIUM)) {
             missingFeatures.add("disabling fall, water, lava, and fire damage");
         }
+        if (!registerHook("LIQUID_DESTROY", PluginListener.Priority.MEDIUM)) {
+            missingFeatures.add("disabling water damage");
+        }
 
         if (missingFeatures.size() > 0) {
             logger.log(Level.WARNING, "WorldGuard: Your version of hMod does not support "

src/WorldGuardListener.java

@@ -85,6 +85,7 @@ public class WorldGuardListener extends PluginListener {
     private Set<Integer> fireNoSpreadBlocks;
     private Set<Integer> allowedLavaSpreadOver;
     private Set<Integer> itemDropBlacklist;
+    private Set<Integer> preventWaterDamage;
     private boolean classicWater;
     private boolean noPhysicsGravel;
     private boolean noPhysicsSand;
@@ -177,6 +178,7 @@ public void loadConfiguration() {
         blockLighter = properties.getBoolean("block-lighter", false);
         preventLavaFire = properties.getBoolean("disable-lava-fire", true);
         disableAllFire = properties.getBoolean("disable-all-fire-spread", false);
+        preventWaterDamage = toBlockIDSet(properties.getString("disable-water-damage-blocks", ""));
         itemDropBlacklist = toBlockIDSet(properties.getString("item-drop-blacklist", ""));
         fireNoSpreadBlocks = toBlockIDSet(properties.getString("disallowed-fire-spread-blocks", ""));
         allowedLavaSpreadOver = toBlockIDSet(properties.getString("allowed-lava-spread-blocks", ""));
@@ -1041,6 +1043,28 @@ public boolean onDamage(PluginLoader.DamageType type, BaseEntity attacker,
         return false;
     }
 
+    /**
+     * Called when water or lava tries to populate a block, you can prevent
+     * crushing of torches, railways, flowers etc. You can alternatively allow
+     * to let normally solid blocks be crushed.
+     *
+     * @param currentState the current tristate, once it's set to a non DEFAULT_ACTION it is final.
+     * @param liquidBlock the type of the attacking block
+     * @param targetBlock the block to be destroyed
+     * @return final after a non DEFAULT_ACTION
+     */
+    @Override
+    public PluginLoader.HookResult onLiquidDestroy(PluginLoader.HookResult currentState,
+            int liquidBlockId, Block targetBlock) {
+        if (preventWaterDamage != null && liquidBlockId <= 9) {
+            if (preventWaterDamage.contains(targetBlock.getType())) {
+                return PluginLoader.HookResult.PREVENT_ACTION;
+            }
+        }
+
+        return PluginLoader.HookResult.DEFAULT_ACTION;
+    }
+
     /**
      * Called on player disconnect
      *

worldguard.properties

@@ -80,6 +80,10 @@ disable-lava-fire=true
 # List of blocks that lava is allowed to spread onto.
 allowed-lava-spread-blocks=
 
+# List of blocks that should not be destroyed by water (Redstone wire,
+# minecart tracks, flowers, etc.).
+disable-water-damage-blocks=
+
 # Control where to log blacklist events to. You can use multiple log
 # methods as you please.
 log-console=true