KOTOR: Add getLevelByPosition and getClassByPosition methods

These two methods return the actual level and class regarding their position in the level vector.

src/engines/kotor/creature.cpp

@@ -95,6 +95,20 @@ int Creature::getLevel(const Class &c) const {
 	return 0;
 }
 
+int Creature::getLevelByPosition(int position) const {
+	if (_levels.size() >= static_cast<unsigned int>(position + 1))
+		return _levels[position].level;
+
+	return 0;
+}
+
+Class Creature::getClassByPosition(int position) const {
+	if (_levels.size() >= static_cast<unsigned int>(position + 1))
+		return _levels[position].characterClass;
+
+	return kClassInvalid;
+}
+
 Race Creature::getRace() const {
 	return _race;
 }

src/engines/kotor/creature.h

@@ -69,6 +69,9 @@ class Creature : public Object {
 	Race getRace() const; ///< Get the race of the creature.
 	SubRace getSubRace() const; ///< Get the subrace of the creature.
 
+	int getLevelByPosition(int position) const; ///< Get the level by its position in the level vector.
+	Class getClassByPosition(int position) const; ///< Get the class by its position in the level vector.
+
 	// Positioning
 
 	/** Set the creature's position. */