v0.7.1: bugfixes:

- fixed keys spawning without chests in secret chest chasms rooms when challenges were enabled
- fixed fireblast rarely damaging enemies who move into it's effect as it's resolving
- fixed dew drops rarely landing on stairs, making them inaccessible.

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/wands/WandOfFireblast.java

@@ -42,6 +42,7 @@ import com.watabou.noosa.audio.Sample;
 import com.watabou.utils.Callback;
 import com.watabou.utils.PathFinder;
 
+import java.util.ArrayList;
 import java.util.HashSet;
 
 public class WandOfFireblast extends DamageWand {
@@ -71,6 +72,7 @@ public class WandOfFireblast extends DamageWand {
 	@Override
 	protected void onZap( Ballistica bolt ) {
 		
+		ArrayList<Char> affectedChars = new ArrayList<>();
 		for( int cell : affectedCells){
 			
 			//ignore caster cell
@@ -86,7 +88,11 @@ public class WandOfFireblast extends DamageWand {
 			
 			Char ch = Actor.findChar( cell );
 			if (ch != null) {
+				affectedChars.add(ch);
+			}
+		}
 		
+		for ( Char ch : affectedChars ){
 			processSoulMark(ch, chargesPerCast());
 			ch.damage(damageRoll(), this);
 			Buff.affect( ch, Burning.class ).reignite( ch );
@@ -100,7 +106,6 @@ public class WandOfFireblast extends DamageWand {
 			}
 		}
 	}
-	}
 
 	//burn... BURNNNNN!.....
 	private void spreadFlames(int cell, float strength){

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/wands/WandOfRegrowth.java

@@ -310,7 +310,9 @@ public class WandOfRegrowth extends Wand {
 
 			ArrayList<Integer> candidates = new ArrayList<Integer>();
 			for (int i : PathFinder.NEIGHBOURS8){
-				if (Dungeon.level.passable[pos+i]){
+				if (Dungeon.level.passable[pos+i]
+						&& pos+i != Dungeon.level.entrance
+						&& pos+i != Dungeon.level.exit){
 					candidates.add(pos+i);
 				}
 			}
@@ -344,7 +346,9 @@ public class WandOfRegrowth extends Wand {
 
 			ArrayList<Integer> candidates = new ArrayList<Integer>();
 			for (int i : PathFinder.NEIGHBOURS8){
-				if (Dungeon.level.passable[pos+i]){
+				if (Dungeon.level.passable[pos+i]
+						&& pos+i != Dungeon.level.entrance
+						&& pos+i != Dungeon.level.exit){
 					candidates.add(pos+i);
 				}
 			}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/secret/SecretChestChasmRoom.java

@@ -62,38 +62,55 @@ public class SecretChestChasmRoom extends SecretRoom {
 		Painter.fill(level, this, Terrain.WALL);
 		Painter.fill(level, this, 1, Terrain.CHASM);
 		
-		Point p = new Point(left+1, top+1);
+		int chests = 0;
-		Painter.set(level, p, Terrain.EMPTY_SP);
-		level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
 		
-		p.x = right-1;
+		Point p = new Point(left+3, top+3);
-		Painter.set(level, p, Terrain.EMPTY_SP);
-		level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
-		
-		p.y = bottom-1;
-		Painter.set(level, p, Terrain.EMPTY_SP);
-		level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
-		
-		p.x = left+1;
-		Painter.set(level, p, Terrain.EMPTY_SP);
-		level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
-		
-		
-		p = new Point(left+3, top+3);
 		Painter.set(level, p, Terrain.EMPTY_SP);
 		level.drop(Generator.random(), level.pointToCell(p)).type = Heap.Type.LOCKED_CHEST;
+		if (level.heaps.get(level.pointToCell(p)) != null) chests++;
 		
 		p.x = right-3;
 		Painter.set(level, p, Terrain.EMPTY_SP);
 		level.drop(Generator.random(), level.pointToCell(p)).type = Heap.Type.LOCKED_CHEST;
+		if (level.heaps.get(level.pointToCell(p)) != null) chests++;
 		
 		p.y = bottom-3;
 		Painter.set(level, p, Terrain.EMPTY_SP);
 		level.drop(Generator.random(), level.pointToCell(p)).type = Heap.Type.LOCKED_CHEST;
+		if (level.heaps.get(level.pointToCell(p)) != null) chests++;
 		
 		p.x = left+3;
 		Painter.set(level, p, Terrain.EMPTY_SP);
 		level.drop(Generator.random(), level.pointToCell(p)).type = Heap.Type.LOCKED_CHEST;
+		if (level.heaps.get(level.pointToCell(p)) != null) chests++;
+		
+		p = new Point(left+1, top+1);
+		Painter.set(level, p, Terrain.EMPTY_SP);
+		if (chests > 0) {
+			level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
+			chests--;
+		}
+		
+		p.x = right-1;
+		Painter.set(level, p, Terrain.EMPTY_SP);
+		if (chests > 0) {
+			level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
+			chests--;
+		}
+		
+		p.y = bottom-1;
+		Painter.set(level, p, Terrain.EMPTY_SP);
+		if (chests > 0) {
+			level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
+			chests--;
+		}
+		
+		p.x = left+1;
+		Painter.set(level, p, Terrain.EMPTY_SP);
+		if (chests > 0) {
+			level.drop(new GoldenKey(Dungeon.depth), level.pointToCell(p));
+			chests--;
+		}
 		
 		level.addItemToSpawn(new PotionOfLevitation());