Fix Outstanding Bugs (#1073)

## Fixes
* Fixes AirBlast, FireBlast, and AirSwipe going through walls
* Fixes FireBurst not doing damage.
* Fixes GeneralMethods#dropItems not checking for invalid drops.

## Misc. Changes
* Reduce collision radii for most abilities.

src/com/projectkorra/projectkorra/GeneralMethods.java

@@ -650,7 +650,9 @@ public class GeneralMethods {
 	 */
 	public static void dropItems(final Block block, final Collection<ItemStack> items) {
 		for (final ItemStack item : items) {
-			block.getWorld().dropItem(block.getLocation(), item);
+			if(item.getType() != Material.AIR) {
+				block.getWorld().dropItem(block.getLocation(), item);
+			}
 		}
 	}
 

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

@@ -20,6 +20,7 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitRunnable;
+import org.bukkit.util.BlockIterator;
 import org.bukkit.util.Vector;
 
 import com.projectkorra.projectkorra.BendingPlayer;
@@ -206,12 +207,35 @@ public class AirBlast extends AirAbility {
 		if (this.random.nextInt(4) == 0) {
 			playAirbendingSound(this.location);
 		}
-		if (GeneralMethods.checkDiagonalWall(this.location, this.direction)) {
+
+		BlockIterator blocks = new BlockIterator(this.getLocation().getWorld(), this.location.toVector(), this.direction, 0, (int) Math.ceil(this.direction.clone().multiply(speedFactor).length()));
+
+		while (blocks.hasNext() && checkLocation(blocks.next()));
+		
+		this.location.add(this.direction.clone().multiply(speedFactor));
+	}
+
+	public boolean checkLocation(Block block) {
+		if (GeneralMethods.checkDiagonalWall(block.getLocation(), this.direction)) {
 			this.remove();
-			return;
+			return false;
 		}
 
-		this.location = this.location.add(this.direction.clone().multiply(this.speedFactor));
+		if ((!block.isPassable() || block.isLiquid()) && !this.affectedLevers.contains(block)) {
+			if (block.getType() == Material.LAVA && this.canCoolLava) {
+				if (LavaFlow.isLavaFlowBlock(block)) {
+					LavaFlow.removeBlock(block); // TODO: Make more generic for future lava generating moves.
+				} else if (block.getBlockData() instanceof Levelled && ((Levelled) block.getBlockData()).getLevel() == 0) {
+					new TempBlock(block, Material.OBSIDIAN);
+				} else {
+					new TempBlock(block, Material.COBBLESTONE);
+				}
+			}
+			this.remove();
+			return false;
+		}
+		
+		return true;
 	}
 
 	private void affect(final Entity entity) {
@@ -400,20 +424,6 @@ public class AirBlast extends AirAbility {
 			}
 		}
 
-		if ((GeneralMethods.isSolid(block) || block.isLiquid()) && !this.affectedLevers.contains(block) && this.canCoolLava) {
-			if (block.getType() == Material.LAVA) {
-				if (LavaFlow.isLavaFlowBlock(block)) {
-					LavaFlow.removeBlock(block); // TODO: Make more generic for future lava generating moves.
-				} else if (block.getBlockData() instanceof Levelled && ((Levelled) block.getBlockData()).getLevel() == 0) {
-					new TempBlock(block, Material.OBSIDIAN);
-				} else {
-					new TempBlock(block, Material.COBBLESTONE);
-				}
-			}
-			this.remove();
-			return;
-		}
-
 		/*
 		 * If a player presses shift and AirBlasts straight down then the
 		 * AirBlast's location gets messed up and reading the distance returns

src/com/projectkorra/projectkorra/airbending/AirSwipe.java

@@ -14,6 +14,7 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitRunnable;
+import org.bukkit.util.BlockIterator;
 import org.bukkit.util.Vector;
 
 import com.projectkorra.projectkorra.GeneralMethods;
@@ -145,6 +146,15 @@ public class AirSwipe extends AirAbility {
 		for (final Vector direction : this.streams.keySet()) {
 			Location location = this.streams.get(direction);
 			if (direction != null && location != null) {
+				
+				BlockIterator blocks = new BlockIterator(this.getLocation().getWorld(), location.toVector(), direction, 0, (int) Math.ceil(direction.clone().multiply(speed).length()));
+
+				while (blocks.hasNext()) {
+					if(!blocks.next().isPassable()) {
+						this.streams.remove(direction);
+					}
+				}
+				
 				location = location.clone().add(direction.clone().multiply(this.speed));
 				this.streams.put(direction, location);
 
@@ -152,7 +162,7 @@ public class AirSwipe extends AirAbility {
 					this.streams.clear();
 				} else {
 					final Block block = location.getBlock();
-					if (!ElementalAbility.isTransparent(this.player, block)) {
+					if (!ElementalAbility.isTransparent(this.player, block) || !block.isPassable()) {
 						this.streams.remove(direction);
 						continue;
 					}

src/com/projectkorra/projectkorra/configuration/ConfigManager.java

@@ -505,7 +505,6 @@ public class ConfigManager {
 			plantBlocks.add(Material.JUNGLE_LEAVES.toString());
 			plantBlocks.add(Material.OAK_LEAVES.toString());
 			plantBlocks.add(Material.SPRUCE_LEAVES.toString());
-			plantBlocks.add(Material.DEAD_BUSH.toString());
 			plantBlocks.add(Material.ORANGE_TULIP.toString());
 			plantBlocks.add(Material.PINK_TULIP.toString());
 			plantBlocks.add(Material.RED_TULIP.toString());
@@ -812,9 +811,9 @@ public class ConfigManager {
 			config.addDefault("Abilities.Air.Passive.GracefulDescent.Enabled", true);
 
 			config.addDefault("Abilities.Air.AirBlast.Enabled", true);
-			config.addDefault("Abilities.Air.AirBlast.Speed", 25);
+			config.addDefault("Abilities.Air.AirBlast.Speed", 15);
 			config.addDefault("Abilities.Air.AirBlast.Range", 20);
-			config.addDefault("Abilities.Air.AirBlast.Radius", 2);
+			config.addDefault("Abilities.Air.AirBlast.Radius", .5);
 			config.addDefault("Abilities.Air.AirBlast.SelectRange", 10);
 			config.addDefault("Abilities.Air.AirBlast.SelectParticles", 4);
 			config.addDefault("Abilities.Air.AirBlast.Particles", 6);
@@ -866,7 +865,7 @@ public class ConfigManager {
 			config.addDefault("Abilities.Air.AirSuction.Speed", 25);
 			config.addDefault("Abilities.Air.AirSuction.Range", 20);
 			config.addDefault("Abilities.Air.AirSuction.SelectRange", 10);
-			config.addDefault("Abilities.Air.AirSuction.Radius", 2);
+			config.addDefault("Abilities.Air.AirSuction.Radius", .5);
 			config.addDefault("Abilities.Air.AirSuction.Push.Self", 2.0);
 			config.addDefault("Abilities.Air.AirSuction.Push.Others", 1.3);
 			config.addDefault("Abilities.Air.AirSuction.Cooldown", 500);
@@ -974,7 +973,7 @@ public class ConfigManager {
 			config.addDefault("Abilities.Water.IceBlast.Damage", 3);
 			config.addDefault("Abilities.Water.IceBlast.Range", 20);
 			config.addDefault("Abilities.Water.IceBlast.DeflectRange", 3);
-			config.addDefault("Abilities.Water.IceBlast.CollisionRadius", 1.5);
+			config.addDefault("Abilities.Water.IceBlast.CollisionRadius", 1.0);
 			config.addDefault("Abilities.Water.IceBlast.Interval", 20);
 			config.addDefault("Abilities.Water.IceBlast.Cooldown", 1500);
 			config.addDefault("Abilities.Water.IceBlast.AllowSnow", false);
@@ -995,7 +994,7 @@ public class ConfigManager {
 			config.addDefault("Abilities.Water.IceSpike.Field.Cooldown", 2000);
 			config.addDefault("Abilities.Water.IceSpike.Blast.Range", 20);
 			config.addDefault("Abilities.Water.IceSpike.Blast.Damage", 1);
-			config.addDefault("Abilities.Water.IceSpike.Blast.CollisionRadius", 1.5);
+			config.addDefault("Abilities.Water.IceSpike.Blast.CollisionRadius", 1.0);
 			config.addDefault("Abilities.Water.IceSpike.Blast.DeflectRange", 3);
 			config.addDefault("Abilities.Water.IceSpike.Blast.Cooldown", 500);
 			config.addDefault("Abilities.Water.IceSpike.Blast.SlowCooldown", 5000);
@@ -1139,7 +1138,7 @@ public class ConfigManager {
 			config.addDefault("Abilities.Water.WaterManipulation.Damage", 3.0);
 			config.addDefault("Abilities.Water.WaterManipulation.Range", 25);
 			config.addDefault("Abilities.Water.WaterManipulation.SelectRange", 16);
-			config.addDefault("Abilities.Water.WaterManipulation.CollisionRadius", 1.5);
+			config.addDefault("Abilities.Water.WaterManipulation.CollisionRadius", 1.0);
 			config.addDefault("Abilities.Water.WaterManipulation.DeflectRange", 3);
 			config.addDefault("Abilities.Water.WaterManipulation.Speed", 35);
 			config.addDefault("Abilities.Water.WaterManipulation.Knockback", 0.3);
@@ -1362,7 +1361,7 @@ public class ConfigManager {
 			config.addDefault("Abilities.Fire.FireBlast.Enabled", true);
 			config.addDefault("Abilities.Fire.FireBlast.Speed", 20);
 			config.addDefault("Abilities.Fire.FireBlast.Range", 20);
-			config.addDefault("Abilities.Fire.FireBlast.CollisionRadius", 1.5);
+			config.addDefault("Abilities.Fire.FireBlast.CollisionRadius", 1.0);
 			config.addDefault("Abilities.Fire.FireBlast.Knockback", 0.3);
 			config.addDefault("Abilities.Fire.FireBlast.Damage", 3);
 			config.addDefault("Abilities.Fire.FireBlast.Cooldown", 1500);

src/com/projectkorra/projectkorra/firebending/FireBlast.java

@@ -15,6 +15,7 @@ import org.bukkit.block.Smoker;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
+import org.bukkit.util.BlockIterator;
 import org.bukkit.util.Vector;
 
 import com.projectkorra.projectkorra.GeneralMethods;
@@ -72,13 +73,13 @@ public class FireBlast extends FireAbility {
 
 		this.setFields();
 		this.safeBlocks = safeBlocks;
-
+		this.damage = damage;
 		this.location = location.clone();
 		this.origin = location.clone();
 		this.direction = direction.clone().normalize();
 
 		// The following code determines the total additive modifier between Blue Fire & Day Modifiers
-		this.applyModifiers();
+		this.applyModifiers(this.damage, this.range);
 
 		this.start();
 	}
@@ -102,18 +103,18 @@ public class FireBlast extends FireAbility {
 		this.location = this.location.add(this.direction.clone());
 		
 		// The following code determines the total additive modifier between Blue Fire & Day Modifiers
-		this.applyModifiers();
+		this.applyModifiers(this.damage, this.range);
 
 		this.start();
 		this.bPlayer.addCooldown("FireBlast", this.cooldown);
 	}
 
-	private void applyModifiers() {
+	private void applyModifiers(double damage, double range) {
 		int damageMod = 0;
 		int rangeMod = 0;
 
 		damageMod = (int) (this.getDayFactor(damage) - damage);
-		rangeMod = (int) (this.getDayFactor(this.range) - this.range);
+		rangeMod = (int) (this.getDayFactor(range) - range);
 
 		damageMod = (int) (bPlayer.canUseSubElement(SubElement.BLUE_FIRE) ? (BlueFireAbility.getDamageFactor() * damage - damage) + damageMod : damageMod);
 		rangeMod = (int) (bPlayer.canUseSubElement(SubElement.BLUE_FIRE) ? (BlueFireAbility.getRangeFactor() * range - range) + rangeMod : rangeMod);
@@ -152,6 +153,12 @@ public class FireBlast extends FireAbility {
 			return;
 		}
 
+		
+		BlockIterator blocks = new BlockIterator(this.getLocation().getWorld(), this.location.toVector(), this.direction, 0, (int) Math.ceil(this.direction.clone().multiply(speedFactor).length()));
+
+		while (blocks.hasNext() && checkLocation(blocks.next()));
+		
+		this.location.add(this.direction.clone().multiply(speedFactor));
 		this.location = this.location.add(this.direction.clone().multiply(this.speedFactor));
 
 		if (this.random.nextInt(4) == 0) {
@@ -159,6 +166,14 @@ public class FireBlast extends FireAbility {
 		}
 	}
 
+	public boolean checkLocation(Block block) {
+		if (GeneralMethods.checkDiagonalWall(block.getLocation(), this.direction) || !block.isPassable()) {
+			this.remove();
+			return false;
+		}
+		
+		return true;
+	}
 	private void affect(final Entity entity) {
 		if (entity.getUniqueId() != this.player.getUniqueId() && !GeneralMethods.isRegionProtectedFromBuild(this, entity.getLocation()) && !((entity instanceof Player) && Commands.invincible.contains(((Player) entity).getName()))) {
 			if (this.bPlayer.isAvatarState()) {