Implements experience gain on opponent faint.

src/Battling/Models/Creature.cpp

@@ -92,6 +92,16 @@ Battling::BattleSide* Battling::Creature::GetBattleSide() const { return _side;
 
 bool Battling::Creature::IsFainted() const { return this->__CurrentHealth <= 0; }
 
+void Battling::Creature::OnFaint() {
+    // HOOK: On Faint
+    _library->GetExperienceLibrary()->HandleExperienceGain(this, _seenOpponents);
+
+    if (!_battle->CanSlotBeFilled(_side->GetSideIndex(), _side->GetCreatureIndex(this))) {
+        _side->MarkSlotAsUnfillable(this);
+    }
+    _battle->ValidateBattleState();
+}
+
 void Battling::Creature::Damage(uint32_t damage, Battling::DamageSource source) {
     if (damage > __CurrentHealth) {
         damage = __CurrentHealth;
@@ -100,10 +110,7 @@ void Battling::Creature::Damage(uint32_t damage, Battling::DamageSource source)
     __CurrentHealth -= damage;
 
     if (IsFainted() && damage > 0) {
-        if (!_battle->CanSlotBeFilled(_side->GetSideIndex(), _side->GetCreatureIndex(this))) {
-            _side->MarkSlotAsUnfillable(this);
-        }
-        _battle->ValidateBattleState();
+        OnFaint();
     }
 }
 
@@ -130,3 +137,16 @@ void Battling::Creature::GetActiveScripts(std::vector<ScriptWrapper>& scripts) {
     _side->GetActiveScripts(scripts);
 }
 void Battling::Creature::ClearVolatileScripts() { _volatile.Clear(); }
+void Battling::Creature::AddExperience(uint32_t amount) {
+    auto maxLevel = _library->GetSettings().GetMaximalLevel();
+    if (__Level >= maxLevel) {
+        return;
+    }
+    auto exp = __Experience + amount;
+    auto level = _library->GetGrowthRateLibrary()->CalculateLevel(this->GetSpecies()->GetGrowthRate(), exp);
+    if (level >= maxLevel) {
+        exp = _library->GetGrowthRateLibrary()->CalculateExperience(this->GetSpecies()->GetGrowthRate(), maxLevel);
+    }
+    __Experience = exp;
+    __Level = level;
+}

src/Battling/Models/Creature.hpp

@@ -54,6 +54,8 @@ namespace CreatureLib::Battling {
         Script* _status = nullptr;
         ScriptSet _volatile = {};
 
+        void OnFaint();
+
     public:
         Creature(const BattleLibrary* library, const Library::CreatureSpecies* species,
                  const Library::SpeciesVariant* variant, uint8_t level, uint32_t experience,
@@ -83,6 +85,7 @@ namespace CreatureLib::Battling {
         void ChangeLevel(int8_t amount);
         void Damage(uint32_t damage, DamageSource source);
         void OverrideActiveTalent(const std::string& talent);
+        void AddExperience(uint32_t amount);
 
         void MarkOpponentAsSeen(Creature* creature) { _seenOpponents.insert(creature); }
         const std::unordered_set<Creature*>& GetSeenOpponents() const { return _seenOpponents; }