v2.1.3: fixed action and minor pathfinding errors with mine action

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java

@@ -1049,6 +1049,7 @@ public class Hero extends Char {
 	private boolean actOpenChest( HeroAction.OpenChest action ) {
 		int dst = action.dst;
 		if (Dungeon.level.adjacent( pos, dst ) || pos == dst) {
+			path = null;
 			
 			Heap heap = Dungeon.level.heaps.get( dst );
 			if (heap != null && (heap.type != Type.HEAP && heap.type != Type.FOR_SALE)) {
@@ -1095,6 +1096,7 @@ public class Hero extends Char {
 	private boolean actUnlock( HeroAction.Unlock action ) {
 		int doorCell = action.dst;
 		if (Dungeon.level.adjacent( pos, doorCell )) {
+			path = null;
 			
 			boolean hasKey = false;
 			int door = Dungeon.level.map[doorCell];
@@ -1140,8 +1142,9 @@ public class Hero extends Char {
 	}
 
 	public boolean actMine(HeroAction.Mine action){
-		if (Dungeon.level.adjacent(pos, action.dst)
-				&& (Dungeon.level.map[action.dst] == Terrain.WALL || Dungeon.level.map[action.dst] == Terrain.WALL_DECO)
+		if (Dungeon.level.adjacent(pos, action.dst)){
+			path = null;
+			if ((Dungeon.level.map[action.dst] == Terrain.WALL || Dungeon.level.map[action.dst] == Terrain.WALL_DECO)
 				&& Dungeon.level.insideMap(action.dst)){
 				sprite.attack(action.dst, new Callback() {
 					@Override
@@ -1174,14 +1177,21 @@ public class Hero extends Char {
 						Dungeon.observe();
 
 						spendAndNext(TICK);
-					ready();
 					}
 				});
-			return false;
+			} else {
+				ready();
 			}
+			return false;
+		} else if (getCloser( action.dst )) {
+
+			return true;
+
+		} else {
 			ready();
 			return false;
 		}
+	}
 	
 	private boolean actTransition(HeroAction.LvlTransition action ) {
 		int stairs = action.dst;