diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Alchemy.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Alchemy.java
index 21ea2e84e..803f094cc 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Alchemy.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Alchemy.java
@@ -48,6 +48,7 @@ public class Alchemy extends Blob {
 	@Override
 	protected void evolve() {
 		volume = off[pos] = cur[pos];
+		area.union(pos%Dungeon.level.width(), pos/Dungeon.level.width());
 		
 		if (Dungeon.visible[pos]) {
 			Journal.add( Journal.Feature.ALCHEMY );
@@ -56,12 +57,14 @@ public class Alchemy extends Blob {
 	
 	@Override
 	public void seed( Level level, int cell, int amount ) {
-		if (cur == null) cur = new int[level.length()];
-		if (off == null) off = new int[cur.length];
+		super.seed(level, cell, amount);
 
 		cur[pos] = 0;
 		pos = cell;
 		volume = cur[pos] = amount;
+
+		area.setEmpty();
+		area.union(cell%level.width(), cell/level.width());
 	}
 	
 	public static void transmute( int cell ) {
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
index 38212c69b..16f957647 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
@@ -27,6 +27,7 @@ import com.shatteredpixel.shatteredpixeldungeon.effects.BlobEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.levels.Level;
 import com.shatteredpixel.shatteredpixeldungeon.utils.BArray;
 import com.watabou.utils.Bundle;
+import com.watabou.utils.Rect;
 
 import java.util.Arrays;
 
@@ -42,7 +43,9 @@ public class Blob extends Actor {
 	protected int[] off;
 	
 	public BlobEmitter emitter;
-	
+
+	public Rect area = new Rect();
+
 	private static final String CUR		= "cur";
 	private static final String START	= "start";
 	private static final String LENGTH	= "length";
@@ -110,17 +113,30 @@ public class Blob extends Actor {
 		
 		if (volume > 0) {
 
+			if (area.isEmpty())
+				setupArea();
+
 			volume = 0;
+
 			evolve();
-			
 			int[] tmp = off;
 			off = cur;
 			cur = tmp;
 			
+		} else {
+			area.setEmpty();
 		}
 		
 		return true;
 	}
+
+	public void setupArea(){
+		for (int cell=0; cell < cur.length; cell++) {
+			if (cur[cell] != 0){
+				area.union(cell%Dungeon.level.width(), cell/Dungeon.level.width());
+			}
+		}
+	}
 	
 	public void use( BlobEmitter emitter ) {
 		this.emitter = emitter;
@@ -128,42 +144,50 @@ public class Blob extends Actor {
 	
 	protected void evolve() {
 		
-		boolean[] notBlocking = BArray.not( Level.solid, null );
-		
-		for (int i=1; i < Dungeon.level.height()-1; i++) {
-			
-			int from = i * Dungeon.level.width() + 1;
-			int to = from + Dungeon.level.width() - 2;
-			
-			for (int pos=from; pos < to; pos++) {
-				if (notBlocking[pos]) {
+		boolean[] blocking = Level.solid;
+		int cell;
+		for (int i=area.top-1; i <= area.bottom; i++) {
+			for (int j = area.left-1; j <= area.right; j++) {
+				cell = j + i*Dungeon.level.width();
+				if (!blocking[cell]) {
 					
 					int count = 1;
-					int sum = cur[pos];
+					int sum = cur[cell];
 					
-					if (notBlocking[pos-1]) {
-						sum += cur[pos-1];
+					if (!blocking[cell-1]) {
+						sum += cur[cell-1];
 						count++;
 					}
-					if (notBlocking[pos+1]) {
-						sum += cur[pos+1];
+					if (!blocking[cell+1]) {
+						sum += cur[cell+1];
 						count++;
 					}
-					if (notBlocking[pos-Dungeon.level.width()]) {
-						sum += cur[pos-Dungeon.level.width()];
+					if (!blocking[cell-Dungeon.level.width()]) {
+						sum += cur[cell-Dungeon.level.width()];
 						count++;
 					}
-					if (notBlocking[pos+Dungeon.level.width()]) {
-						sum += cur[pos+Dungeon.level.width()];
+					if (!blocking[cell+Dungeon.level.width()]) {
+						sum += cur[cell+Dungeon.level.width()];
 						count++;
 					}
 					
 					int value = sum >= count ? (sum / count) - 1 : 0;
-					off[pos] = value;
+					off[cell] = value;
+
+					if (value > 0){
+						if (i < area.top)
+							area.top = i;
+						else if (i >= area.bottom)
+							area.bottom = i+1;
+						if (j < area.left)
+							area.left = j;
+						else if (j >= area.right)
+							area.right = j+1;
+					}
 					
 					volume += value;
 				} else {
-					off[pos] = 0;
+					off[cell] = 0;
 				}
 			}
 		}
@@ -175,6 +199,8 @@ public class Blob extends Actor {
 
 		cur[cell] += amount;
 		volume += amount;
+
+		area.union(cell%level.width(), cell/level.width());
 	}
 	
 	public void clear( int cell ) {
@@ -184,6 +210,7 @@ public class Blob extends Actor {
 
 	public void fullyClear(){
 		volume = 0;
+		area.setEmpty();
 		cur = new int[Dungeon.level.length()];
 		off = new int[Dungeon.level.length()];
 	}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ConfusionGas.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ConfusionGas.java
index 8e8a5f55f..58f2d88ab 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ConfusionGas.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ConfusionGas.java
@@ -36,10 +36,15 @@ public class ConfusionGas extends Blob {
 		super.evolve();
 
 		Char ch;
-		for (int i = 0; i < Dungeon.level.length(); i++) {
-			if (cur[i] > 0 && (ch = Actor.findChar( i )) != null) {
-				if (!ch.immunities().contains(this.getClass()))
-					Buff.prolong( ch, Vertigo.class, 2 );
+		int cell;
+
+		for (int i = area.left; i < area.right; i++){
+			for (int j = area.top; j < area.bottom; j++){
+				cell = i + j*Dungeon.level.width();
+				if (cur[cell] > 0 && (ch = Actor.findChar( cell )) != null) {
+					if (!ch.immunities().contains(this.getClass()))
+						Buff.prolong( ch, Vertigo.class, 2 );
+				}
 			}
 		}
 	}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Fire.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Fire.java
index b182af4fd..773037896 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Fire.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Fire.java
@@ -39,52 +39,51 @@ public class Fire extends Blob {
 	protected void evolve() {
 
 		boolean[] flamable = Level.flamable;
-		
-		int from = Dungeon.level.width() + 1;
-		int to = Dungeon.level.length() - Dungeon.level.width() - 1;
-		
+		int cell;
+		int fire;
+
 		boolean observe = false;
-		
-		for (int pos=from; pos < to; pos++) {
-			
-			int fire;
-			
-			if (cur[pos] > 0) {
-				
-				burn( pos );
-				
-				fire = cur[pos] - 1;
-				if (fire <= 0 && flamable[pos]) {
-					
-					int oldTile = Dungeon.level.map[pos];
-					Dungeon.level.destroy( pos );
-					
-					observe = true;
-					GameScene.updateMap( pos );
-					if (Dungeon.visible[pos]) {
-						GameScene.discoverTile( pos, oldTile );
+
+		for (int i = area.left-1; i <= area.right; i++) {
+			for (int j = area.top-1; j <= area.bottom; j++) {
+				cell = i + j*Dungeon.level.width();
+				if (cur[cell] > 0) {
+
+					burn( cell );
+
+					fire = cur[cell] - 1;
+					if (fire <= 0 && flamable[cell]) {
+
+						int oldTile = Dungeon.level.map[cell];
+						Dungeon.level.destroy( cell );
+
+						observe = true;
+						GameScene.updateMap( cell );
+						if (Dungeon.visible[cell]) {
+							GameScene.discoverTile( cell, oldTile );
+						}
 					}
-				}
-				
-			} else {
-				
-				if (flamable[pos]
-						&& (cur[pos-1] > 0
-						|| cur[pos+1] > 0
-						|| cur[pos-Dungeon.level.width()] > 0
-						|| cur[pos+Dungeon.level.width()] > 0)) {
-					fire = 4;
-					burn( pos );
+
 				} else {
-					fire = 0;
+
+					if (flamable[cell]
+							&& (cur[cell-1] > 0
+							|| cur[cell+1] > 0
+							|| cur[cell-Dungeon.level.width()] > 0
+							|| cur[cell+Dungeon.level.width()] > 0)) {
+						fire = 4;
+						burn( cell );
+						area.union(i, j);
+					} else {
+						fire = 0;
+					}
+
 				}
 
+				volume += (off[cell] = fire);
 			}
-			
-			volume += (off[pos] = fire);
-
 		}
-		
+
 		if (observe) {
 			Dungeon.observe();
 		}
@@ -107,15 +106,6 @@ public class Fire extends Blob {
 		}
 	}
 	
-	public void seed( Level level, int cell, int amount ) {
-		if (cur == null) cur = new int[level.length()];
-		if (off == null) off = new int[cur.length];
-		if (cur[cell] == 0) {
-			volume += amount;
-			cur[cell] = amount;
-		}
-	}
-	
 	@Override
 	public void use( BlobEmitter emitter ) {
 		super.use( emitter );
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Foliage.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Foliage.java
index 92f1e1d6a..156a49ea2 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Foliage.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Foliage.java
@@ -37,29 +37,29 @@ public class Foliage extends Blob {
 	@Override
 	protected void evolve() {
 
-		int from = Dungeon.level.width() + 1;
-		int to = Dungeon.level.length() - Dungeon.level.width() - 1;
-		
 		int[] map = Dungeon.level.map;
-		boolean regrowth = false;
 		
 		boolean visible = false;
-		
-		for (int pos=from; pos < to; pos++) {
-			if (cur[pos] > 0) {
-				
-				off[pos] = cur[pos];
-				volume += off[pos];
-				
-				if (map[pos] == Terrain.EMBERS) {
-					map[pos] = Terrain.GRASS;
-					regrowth = true;
+
+		int cell;
+		for (int i = area.left; i < area.right; i++) {
+			for (int j = area.top; j < area.bottom; j++) {
+				cell = i + j*Dungeon.level.width();
+				if (cur[cell] > 0) {
+
+					off[cell] = cur[cell];
+					volume += off[cell];
+
+					if (map[cell] == Terrain.EMBERS) {
+						map[cell] = Terrain.GRASS;
+						GameScene.updateMap(cell);
+					}
+
+					visible = visible || Dungeon.visible[cell];
+
+				} else {
+					off[cell] = 0;
 				}
-				
-				visible = visible || Dungeon.visible[pos];
-				
-			} else {
-				off[pos] = 0;
 			}
 		}
 		
@@ -67,11 +67,7 @@ public class Foliage extends Blob {
 		if (hero.isAlive() && hero.visibleEnemies() == 0 && cur[hero.pos] > 0) {
 			Buff.affect( hero, Shadows.class ).prolong();
 		}
-		
-		if (regrowth) {
-			GameScene.updateMap();
-		}
-		
+
 		if (visible) {
 			Journal.add( Journal.Feature.GARDEN );
 		}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/GooWarn.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/GooWarn.java
index 28cf92520..a8eedbdd6 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/GooWarn.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/GooWarn.java
@@ -41,27 +41,20 @@ public class GooWarn extends Blob {
 
 	@Override
 	protected void evolve() {
-		for (int i = 0; i < Dungeon.level.length(); i++) {
 
-			int offv = cur[i] > 0 ? cur[i] - 1 : 0;
-			off[i] = offv;
+		int cell;
 
-			if (offv > 0) {
-				volume += offv;
+		for (int i = area.left; i < area.right; i++){
+			for (int j = area.top; j < area.bottom; j++){
+				cell = i + j*Dungeon.level.width();
+				off[cell] = cur[cell] > 0 ? cur[cell] - 1 : 0;
+
+				if (off[cell] > 0) {
+					volume += off[cell];
+				}
 			}
 		}
 
-
-	}
-
-	public void seed(Level level, int cell, int amount ) {
-		if (cur == null) cur = new int[level.length()];
-		if (off == null) off = new int[cur.length];
-		int diff = amount - cur[cell];
-		if (diff > 0) {
-			cur[cell] = amount;
-			volume += diff;
-		}
 	}
 
 	@Override
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ParalyticGas.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ParalyticGas.java
index ede24b4ba..edc351602 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ParalyticGas.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ParalyticGas.java
@@ -36,10 +36,15 @@ public class ParalyticGas extends Blob {
 		super.evolve();
 		
 		Char ch;
-		for (int i = 0; i < Dungeon.level.length(); i++) {
-			if (cur[i] > 0 && (ch = Actor.findChar( i )) != null) {
-				if (!ch.immunities().contains(this.getClass()))
-					Buff.prolong( ch, Paralysis.class, Paralysis.duration( ch ) );
+		int cell;
+
+		for (int i = area.left; i < area.right; i++) {
+			for (int j = area.top; j < area.bottom; j++) {
+				cell = i + j * Dungeon.level.width();
+				if (cur[cell] > 0 && (ch = Actor.findChar(cell)) != null) {
+					if (!ch.immunities().contains(this.getClass()))
+						Buff.prolong(ch, Paralysis.class, Paralysis.duration(ch));
+				}
 			}
 		}
 	}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Regrowth.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Regrowth.java
index ade68b064..7cd0b690e 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Regrowth.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Regrowth.java
@@ -38,33 +38,32 @@ public class Regrowth extends Blob {
 		super.evolve();
 		
 		if (volume > 0) {
-			
-			for (int i=0; i < Dungeon.level.length(); i++) {
-				if (off[i] > 0) {
-					int c = Dungeon.level.map[i];
-					int c1 = c;
-					if (c == Terrain.EMPTY || c == Terrain.EMBERS || c == Terrain.EMPTY_DECO) {
-						c1 = cur[i] > 9 ? Terrain.HIGH_GRASS : Terrain.GRASS;
-					} else if (c == Terrain.GRASS && cur[i] > 9 && Dungeon.level.plants.get(i) == null ) {
-						c1 = Terrain.HIGH_GRASS;
-					}
-
-					if (c1 != c) {
-						Level.set( i, Terrain.HIGH_GRASS );
-						Dungeon.observe();
-
-						GameScene.updateMap( i );
-						if (Dungeon.visible[i]) {
-							GameScene.discoverTile( i, c );
+			int cell;
+			for (int i = area.left; i < area.right; i++) {
+				for (int j = area.top; j < area.bottom; j++) {
+					cell = i + j*Dungeon.level.width();
+					if (off[cell] > 0) {
+						int c = Dungeon.level.map[cell];
+						int c1 = c;
+						if (c == Terrain.EMPTY || c == Terrain.EMBERS || c == Terrain.EMPTY_DECO) {
+							c1 = cur[cell] > 9 ? Terrain.HIGH_GRASS : Terrain.GRASS;
+						} else if (c == Terrain.GRASS && cur[cell] > 9 && Dungeon.level.plants.get(cell) == null ) {
+							c1 = Terrain.HIGH_GRASS;
+						}
+
+						if (c1 != c) {
+							Level.set( cell, c1 );
+							GameScene.updateMap( cell );
+						}
+
+						Char ch = Actor.findChar( cell );
+						if (ch != null && off[cell] > 1) {
+							Buff.prolong( ch, Roots.class, TICK );
 						}
-					}
-					
-					Char ch = Actor.findChar( i );
-					if (ch != null && cur[i] > 1) {
-						Buff.prolong( ch, Roots.class, TICK );
 					}
 				}
 			}
+			Dungeon.observe();
 		}
 	}
 	
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/StenchGas.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/StenchGas.java
index 6aeafea34..a526e6e43 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/StenchGas.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/StenchGas.java
@@ -25,6 +25,7 @@ import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Paralysis;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Vertigo;
 import com.shatteredpixel.shatteredpixeldungeon.effects.BlobEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.effects.Speck;
 import com.shatteredpixel.shatteredpixeldungeon.messages.Messages;
@@ -36,10 +37,15 @@ public class StenchGas extends Blob {
 		super.evolve();
 
 		Char ch;
-		for (int i = 0; i < Dungeon.level.length(); i++) {
-			if (cur[i] > 0 && (ch = Actor.findChar(i)) != null) {
-				if (!ch.immunities().contains(this.getClass()))
-					Buff.prolong( ch, Paralysis.class, Paralysis.duration( ch )/5 );
+		int cell;
+
+		for (int i = area.left; i < area.right; i++){
+			for (int j = area.top; j < area.bottom; j++){
+				cell = i + j*Dungeon.level.width();
+				if (cur[cell] > 0 && (ch = Actor.findChar( cell )) != null) {
+					if (!ch.immunities().contains(this.getClass()))
+						Buff.prolong( ch, Paralysis.class, Paralysis.duration( ch )/5 );
+				}
 			}
 		}
 	}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ToxicGas.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ToxicGas.java
index 475b531a3..0de8e3015 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ToxicGas.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/ToxicGas.java
@@ -40,15 +40,19 @@ public class ToxicGas extends Blob implements Hero.Doom {
 		int levelDamage = 5 + Dungeon.depth * 5;
 
 		Char ch;
-		for (int i=0; i < Dungeon.level.length(); i++) {
-			if (cur[i] > 0 && (ch = Actor.findChar( i )) != null) {
+		int cell;
 
-				int damage = (ch.HT + levelDamage) / 40;
-				if (Random.Int( 40 ) < (ch.HT + levelDamage) % 40) {
-					damage++;
+		for (int i = area.left; i < area.right; i++){
+			for (int j = area.top; j < area.bottom; j++){
+				cell = i + j*Dungeon.level.width();
+				if (cur[cell] > 0 && (ch = Actor.findChar( cell )) != null) {
+					int damage = (ch.HT + levelDamage) / 40;
+					if (Random.Int( 40 ) < (ch.HT + levelDamage) % 40) {
+						damage++;
+					}
+
+					ch.damage( damage, this );
 				}
-				
-				ch.damage( damage, this );
 			}
 		}
 	}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/VenomGas.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/VenomGas.java
index 865b2aa28..e14722d0b 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/VenomGas.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/VenomGas.java
@@ -42,10 +42,15 @@ public class VenomGas extends Blob {
 			strength = 0;
 		} else {
 			Char ch;
-			for (int i = 0; i < Dungeon.level.length(); i++) {
-				if (cur[i] > 0 && (ch = Actor.findChar(i)) != null) {
-					if (!ch.immunities().contains(this.getClass()))
-						Buff.affect(ch, Venom.class).set(2f, strength);
+			int cell;
+
+			for (int i = area.left; i < area.right; i++){
+				for (int j = area.top; j < area.bottom; j++){
+					cell = i + j*Dungeon.level.width();
+					if (cur[cell] > 0 && (ch = Actor.findChar( cell )) != null) {
+						if (!ch.immunities().contains(this.getClass()))
+							Buff.affect(ch, Venom.class).set(2f, strength);
+					}
 				}
 			}
 		}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Web.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Web.java
index 4f77b7345..ef600416c 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Web.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Web.java
@@ -24,6 +24,7 @@ import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Paralysis;
 import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Roots;
 import com.shatteredpixel.shatteredpixeldungeon.effects.BlobEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.effects.particles.WebParticle;
@@ -34,19 +35,22 @@ public class Web extends Blob {
 	
 	@Override
 	protected void evolve() {
-		
-		for (int i = 0; i < Dungeon.level.length(); i++) {
-			
-			int offv = cur[i] > 0 ? cur[i] - 1 : 0;
-			off[i] = offv;
-			
-			if (offv > 0) {
-				
-				volume += offv;
-				
-				Char ch = Actor.findChar( i );
-				if (ch != null) {
-					Buff.prolong( ch, Roots.class, TICK );
+
+		int cell;
+
+		for (int i = area.left; i < area.right; i++){
+			for (int j = area.top; j < area.bottom; j++){
+				cell = i + j*Dungeon.level.width();
+				off[cell] = cur[cell] > 0 ? cur[cell] - 1 : 0;
+
+				if (off[cell] > 0) {
+
+					volume += off[cell];
+
+					Char ch = Actor.findChar( cell );
+					if (ch != null) {
+						Buff.prolong( ch, Roots.class, TICK );
+					}
 				}
 			}
 		}
@@ -59,16 +63,6 @@ public class Web extends Blob {
 		emitter.pour( WebParticle.FACTORY, 0.4f );
 	}
 	
-	public void seed(Level level, int cell, int amount ) {
-		if (cur == null) cur = new int[level.length()];
-		if (off == null) off = new int[cur.length];
-		int diff = amount - cur[cell];
-		if (diff > 0) {
-			cur[cell] = amount;
-			volume += diff;
-		}
-	}
-	
 	@Override
 	public String tileDesc() {
 		return Messages.get(this, "desc");
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/WellWater.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/WellWater.java
index 50db45632..ff64da9e4 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/WellWater.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/WellWater.java
@@ -52,6 +52,7 @@ public class WellWater extends Blob {
 	@Override
 	protected void evolve() {
 		volume = off[pos] = cur[pos];
+		area.union(pos%Dungeon.level.width(), pos/Dungeon.level.width());
 		
 		if (Dungeon.visible[pos]) {
 			if (this instanceof WaterOfAwareness) {
@@ -125,11 +126,14 @@ public class WellWater extends Blob {
 	
 	@Override
 	public void seed( Level level, int cell, int amount ) {
-		if (cur == null) cur = new int[level.length()];
-		if (off == null) off = new int[cur.length];
+		super.seed(level, cell, amount);
+
 		cur[pos] = 0;
 		pos = cell;
 		volume = cur[pos] = amount;
+
+		area.setEmpty();
+		area.union(cell%level.width(), cell/level.width());
 	}
 	
 	public static void affectCell( int cell ) {
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/BlobEmitter.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/BlobEmitter.java
index 7cdb376ce..a402c216b 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/BlobEmitter.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/BlobEmitter.java
@@ -44,15 +44,22 @@ public class BlobEmitter extends Emitter {
 		if (blob.volume <= 0) {
 			return;
 		}
+
+		if (blob.area.isEmpty())
+			blob.setupArea();
 		
 		int[] map = blob.cur;
 		float size = DungeonTilemap.SIZE;
-		
-		for (int i=0; i < Dungeon.level.length(); i++) {
-			if (map[i] > 0 && Dungeon.visible[i]) {
-				float x = ((i % Dungeon.level.width()) + Random.Float()) * size;
-				float y = ((i / Dungeon.level.width()) + Random.Float()) * size;
-				factory.emit( this, index, x, y );
+
+		int cell;
+		for (int i = blob.area.left; i < blob.area.right; i++) {
+			for (int j = blob.area.top; j < blob.area.bottom; j++) {
+				cell = i + j*Dungeon.level.width();
+				if (map[cell] > 0 && Dungeon.visible[cell]) {
+					float x = (i + Random.Float()) * size;
+					float y = (j + Random.Float()) * size;
+					factory.emit(this, index, x, y);
+				}
 			}
 		}
 	}