Made a few changes to the Wall Damage System

Airblast will no longer crash when it gets to invoking a
HorizontalVelocityTracker.
The HorizontalVelocityTracker now cancels if the entity comes in contact
with water.
The HorizontalVelocityChangeEvent listener in PKListener now only works
if the entity's ID is NOT the same as the instigator's.

out/production/ProjectKorra/plugin.yml

@@ -0,0 +1,156 @@
+name: ProjectKorra
+author: ProjectKorra
+version: 1.6.0 BETA 14
+main: com.projectkorra.ProjectKorra.ProjectKorra
+softdepend: [PreciousStones, WorldGuard, WorldEdit, Factions, MassiveCore, GriefPrevention, Towny, NoCheatPlus, LWC]
+commands:
+  projectkorra:
+    aliases: [b,bending,mtla,tla,korra,pk,bend]
+    usage: /<command>
+permissions:
+  bending.admin:
+    default: op
+    description: Grants access to all commands and abilities.
+    children:
+      bending.player: true
+      bending.command.reload: true
+      bending.admin.permaremove: true
+      bending.command.avatar: true
+      bending.command.add.others: true
+      bending.command.add: true
+      bending.command.rechoose: true
+      bending.admin.choose: true
+      bending.ability.AvatarState: true
+      bending.ability.Bloodbending: true
+      bending.ability.Flight: true
+      bending.command.import: true
+      bending.command.toggle.all: true
+      bending.command.give: true
+      bending.command.invincible: true
+      bending.admin.debug: true
+      bending.admin.remove: true
+  bending.player:
+    default: true
+    description: Grants access to most abilities and basic commands.
+    children:
+      bending.command.bind: true
+      bending.command.display: true
+      bending.command.toggle: true
+      bending.command.choose: true
+      bending.command.version: true
+      bending.command.help: true
+      bending.command.clear: true
+      bending.command.who: true
+      bending.command.preset.list: true
+      bending.command.preset.create.2: true
+      bending.command.preset.create: true
+      bending.command.preset.bind: true
+      bending.command.preset.delete: true
+      bending.air: true
+      bending.water: true
+      bending.earth: true
+      bending.fire: true
+      bending.chi: true
+  bending.air:
+    default: true
+    description: Grants access to all airbending abilities.
+    children:
+      bending.ability.AirBlast: true
+      bending.ability.AirBubble: true
+      bending.ability.AirBurst: true
+      bending.ability.AirScooter: true
+      bending.ability.AirShield: true
+      bending.ability.AirSpout: true
+      bending.ability.AirSuction: true
+      bending.ability.AirSwipe: true
+      bending.ability.Suffocate: true
+      bending.ability.Tornado: true
+      bending.ability.AirCombo: true
+      bending.air.passive: true
+      bending.air.flight: true
+  bending.water:
+    default: true
+    description: Grants access to most waterbending abilities.
+    children:
+      bending.ability.HealingWaters: true
+      bending.ability.IceBlast: true
+      bending.ability.IceSpike: true
+      bending.ability.OctopusForm: true
+      bending.ability.PhaseChange: true
+      bending.ability.Surge: true
+      bending.ability.Torrent: true
+      bending.ability.WaterBubble: true
+      bending.ability.WaterManipulation: true
+      bending.ability.WaterSpout: true
+      bending.ability.WaterSpout.Wave: true
+      bending.ability.WaterCombo: true
+      bending.water.plantbending: true
+      bending.message.nightmessage: true
+      bending.water.passive: true
+      bending.water.icebending: true
+      bending.water.healing: true
+  bending.earth:
+    default: true
+    description: Grants access to all Earthbending abilities.
+    children:
+      bending.ability.Catapult: true
+      bending.ability.Collapse: true
+      bending.ability.EarthArmor: true
+      bending.ability.EarthBlast: true
+      bending.ability.EarthGrab: true
+      bending.ability.EarthTunnel: true
+      bending.ability.RaiseEarth: true
+      bending.ability.Shockwave: true
+      bending.ability.Tremorsense: true
+      bending.ability.Extraction: true
+      bending.ability.MetalClips: true
+      bending.ability.MetalClips.loot: false
+      bending.ability.MetalClips.4clips: false
+      bending.earth.passive: true
+      bending.earth.metalbending: true
+      bending.earth.lavabending: true
+      bending.earth.sandbending: true
+      bending.earth.grapplinghook: true
+      bending.ability.LavaSurge: true
+      bending.ability.LavaFlow: true
+      bending.ability.EarthSmash: true
+  bending.fire:
+    default: true
+    description: Grants access to all firebending abilities.
+    children:
+      bending.ability.Blaze: true
+      bending.ability.FireBlast: true
+      bending.ability.FireBurst: true
+      bending.ability.FireJet: true
+      bending.ability.FireShield: true
+      bending.ability.HeatControl: true
+      bending.ability.Illumination: true
+      bending.ability.Lightning: true
+      bending.ability.WallOfFire: true
+      bending.ability.Combustion: true
+      bending.ability.FireCombo: true
+      bending.message.daymessage: true
+      bending.fire.passive: true
+      bending.fire.lightningbending: true
+      bending.fire.combustionbending: true
+  bending.chi:
+    default: true
+    description: Grants access to all ChiBlocking abilities.
+    children:
+      bending.ability.HighJump: true
+      bending.ability.Paralyze: true
+      bending.ability.RapidPunch: true
+      bending.ability.Smokescreen: true
+      bending.ability.WarriorStance: true
+      bending.ability.AcrobatStance: true
+      bending.ability.QuickStrike: true
+      bending.ability.SwiftKick: true
+      bending.ability.ChiCombo: true
+      bending.chi.passive: true
+      bending.chi.grapplinghook: true
+  bending.avatar:
+    default: false
+    description: Grants the Avatar Color.
+  bending.ability.MetalClips.loot:
+    default: false
+    description: Lets a Metalbender loot a player's inventory of its iron.

src/com/projectkorra/ProjectKorra/Objects/HorizontalVelocityTracker.java

@@ -8,6 +8,7 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.util.Vector;
 
+import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
@@ -46,15 +47,29 @@ public class HorizontalVelocityTracker
 
 		Vector diff = thisVelocity.subtract(lastVelocity);
 
+		List<Block> blocks = Methods.getBlocksAroundPoint(entity.getLocation(), 1.5);
+
 		if(entity.isOnGround())
+		{
 			remove();
+			return;
+		}
+
+		for(Block b : blocks)
+		{
+			if(Methods.isWater(b))
+			{
+				remove();
+				return;
+			}
+		}
 
 		if(thisVelocity.length() < lastVelocity.length())
 		{
 			if((diff.getX() > 1 || diff.getX() < -1)
 					|| (diff.getZ() > 1 || diff.getZ() < -1))
 			{
-				for(Block b : Methods.getBlocksAroundPoint(entity.getLocation(), 2))
+				for(Block b : blocks)
 				{
 					if(!Methods.isTransparentToEarthbending(instigator, b))
 					{

src/com/projectkorra/ProjectKorra/PKListener.java

@@ -69,7 +69,10 @@ public class PKListener implements Listener {
 	{
 		if(e.getEntity() instanceof LivingEntity)
 		{
-			Methods.damageEntity(e.getInstigator(), e.getEntity(), e.getDifference().length() * 2);
+			if(e.getEntity().getEntityId() != e.getInstigator().getEntityId())
+			{
+				Methods.damageEntity(e.getInstigator(), e.getEntity(), e.getDifference().length() * 2);
+			}
 		}
 	}
 

src/com/projectkorra/ProjectKorra/airbending/AirBlast.java

@@ -262,7 +262,7 @@ public class AirBlast {
 				return;
 			
 			Methods.setVelocity(entity, velocity);
-			new HorizontalVelocityTracker(entity, player, 200);
+			new HorizontalVelocityTracker(entity, player, 200l);
 			entity.setFallDistance(0);
 			if (!isUser && entity instanceof Player) {
 				new Flight((Player) entity, player);