+int Hero::NextLevel() const {
+ int levelOffset(Level() - 1);
+ if (levelOffset < numLevels) {
+ return levelLadder[levelOffset] - Experience();
+ } else {
+ return 0;
+ }
+}
+
+void Hero::AddExperience(int exp, vector<UpgradeInfo> &info) {
+ if (level > numLevels) {
+ // don't award any experience if at highest level
+ return;
+ }
+ int remain = exp;
+ while (remain >= NextLevel()) {
+ int added = NextLevel();
+ experience += added;
+ remain -= added;
+ ++level;
+
+ info.push_back(UpgradeInfo(UPGRADE_LVL, level));
+
+ // TODO: upgrade attributes and push info
+
+ if (level > numLevels) {
+ return;
+ }
+ }
+ experience += remain;
+}
+
+
+bool Hero::CanEquip(const Item &item) const {
+ return useMask & item.HeroMask();
+}
+
+bool Hero::CanInvoke(const Spell &spell) const {
+ return useMask & spell.HeroMask();
+}
+
+