Initial support for item use scripts in angelscript.

src/ScriptResolving/AngelScript/AngelScriptItemUseScript.hpp

@@ -0,0 +1,50 @@
+#ifndef PKMNLIB_ANGELSCRIPTITEMUSESCRIPT_HPP
+#define PKMNLIB_ANGELSCRIPTITEMUSESCRIPT_HPP
+
+#include <CreatureLib/Battling/ScriptHandling/ItemUseScript.hpp>
+#include "AngelScriptFunctionCall.hpp"
+
+class AngelScriptResolver;
+
+class AngelScriptItemUseScript final : public CreatureLib::Battling::ItemUseScript {
+public:
+    AngelScriptItemUseScript(asIScriptObject* scriptObject, const AngelScriptResolver* resolver)
+        : _scriptObject(scriptObject), _resolver(resolver) {}
+
+    [[nodiscard]] bool IsItemUsable() const override;
+    [[nodiscard]] bool IsCreatureUseItem() const override;
+    bool IsUseValidForCreature(CreatureLib::Battling::Creature* creature) const override;
+
+    bool IsHoldable() const override;
+
+    void OnUse() const override;
+    void OnCreatureUse(CreatureLib::Battling::Creature* creature) const override;
+
+private:
+    asIScriptObject* _scriptObject;
+    const AngelScriptResolver* _resolver;
+
+    struct FunctionInfo {
+        bool Exists = false;
+        asIScriptFunction* Function = nullptr;
+    };
+
+    FunctionInfo Initialize(const std::string& decl) {
+        auto val = _scriptObject->GetObjectType()->GetMethodByDecl(decl.c_str(), false);
+        if (val == nullptr) {
+            return FunctionInfo{.Exists = false, .Function = nullptr};
+        }
+        return FunctionInfo{.Exists = true, .Function = val};
+    }
+
+#define ITEM_USE_SCRIPT_HOOK_FUNCTION(name, decl) FunctionInfo __##name = Initialize(decl);
+
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(IsItemUsable, "bool IsItemUsable()");
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(IsPokemonUseItem, "bool IsPokemonUseItem()");
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(IsUseValidForPokemon, "bool IsUseValidForPokemon(Pokemon@ target)");
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(IsHoldable, "bool IsHoldable()");
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(OnUse, "void OnUse()");
+    ITEM_USE_SCRIPT_HOOK_FUNCTION(OnPokemonUse, "void OnPokemonUse(Pokemon@ target)");
+};
+
+#endif // PKMNLIB_ANGELSCRIPTITEMUSESCRIPT_HPP