Cleaned up Events, added events on species and variant changes.

Signed-off-by: Deukhoofd <Deukhoofd@gmail.com>

src/Battling/EventHooks/Events/ChangeSpeciesEvent.hpp

@@ -0,0 +1,22 @@
+#ifndef CREATURELIB_CHANGESPECIESEVENT_HPP
+#define CREATURELIB_CHANGESPECIESEVENT_HPP
+#include "EventData.hpp"
+
+namespace CreatureLib::Battling {
+    class ChangeSpeciesEvent : public EventData {
+        const ArbUt::BorrowedPtr<Creature> _creature;
+        const ArbUt::BorrowedPtr<const CreatureLib::Library::CreatureSpecies> _newSpecies;
+
+    public:
+        ChangeSpeciesEvent(const ArbUt::BorrowedPtr<Creature>& creature,
+                           const ArbUt::BorrowedPtr<const CreatureLib::Library::CreatureSpecies>& species) noexcept
+            : _creature(creature), _newSpecies(species) {}
+        EventDataKind GetKind() const noexcept override { return EventDataKind ::ChangeSpecies; }
+        const ArbUt::BorrowedPtr<Creature>& GetCreature() const noexcept { return _creature; }
+        const ArbUt::BorrowedPtr<const CreatureLib::Library::CreatureSpecies>& GetNewSpecies() const noexcept {
+            return _newSpecies;
+        }
+    };
+}
+
+#endif // CREATURELIB_CHANGESPECIESEVENT_HPP