- Modified "Wave X" text for "Tabla del X"

- Implemented return values for messages
- Implemented one digit answers
- Project upgraded to VS2017

keyHandlers.cpp

@@ -18,7 +18,13 @@ void keyHandler(SDL_Scancode key) {
 		int num = key == 98 ? 0 : key - 88;
 		if (digit == -1) {
 			digit = num;
-			SendMessage("SetNumbers", num, -1);
+			SendMessage("CheckEnemyHit", 0, num);
+			if (GetMessageReturn() != 0) {
+				SendMessage("SetNumbers", -1, num);
+				digit = -1;
+			} else {
+				SendMessage("SetNumbers", num, -1);
+			}
 		}
 		else {
 			SendMessage("SetNumbers", -1, num);