v0.3.0c: centralized general sign placement logic, fixed a bug where traps would sometimes appear over signs.

src/com/shatteredpixel/shatteredpixeldungeon/levels/RegularLevel.java

@@ -168,6 +168,16 @@ public abstract class RegularLevel extends Level {
 		
 		return true;
 	}
+
+	protected void placeSign(){
+		while (true) {
+			int pos = roomEntrance.random();
+			if (pos != entrance || traps.get(pos) == null) {
+				map[pos] = Terrain.SIGN;
+				break;
+			}
+		}
+	}
 	
 	protected boolean initRooms() {