220 lines
23 KiB
C++
220 lines
23 KiB
C++
/*************************************************************************/
|
|
/* wrapped.hpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef GODOT_CPP_WRAPPED_HPP
|
|
#define GODOT_CPP_WRAPPED_HPP
|
|
|
|
#include <godot_cpp/core/memory.hpp>
|
|
|
|
#include <godot_cpp/godot.hpp>
|
|
namespace godot {
|
|
|
|
typedef void GodotObject;
|
|
|
|
// Base for all engine classes, to contain the pointer to the engine instance.
|
|
class Wrapped {
|
|
friend class GDExtensionBinding;
|
|
|
|
// Private constructor, this should not be created directly by users.
|
|
Wrapped(GodotObject *p_owner) :
|
|
_owner(p_owner) {}
|
|
|
|
protected:
|
|
Wrapped() = default;
|
|
|
|
public:
|
|
// Must be public but you should not touch this.
|
|
GodotObject *_owner = nullptr;
|
|
|
|
static Wrapped *_new() {
|
|
return nullptr;
|
|
}
|
|
};
|
|
|
|
namespace internal {
|
|
|
|
template <class T, class Enable = void>
|
|
struct Creator {
|
|
static T *_new() { return nullptr; }
|
|
};
|
|
|
|
template <class T>
|
|
struct Creator<T, typename std::enable_if<std::is_base_of_v<godot::Wrapped, T>>::type> {
|
|
static T *_new() { return T::_new(); }
|
|
};
|
|
|
|
// template <class T>
|
|
// struct Creator<T, std::false_type> {
|
|
// };
|
|
|
|
// template <class T>
|
|
// struct Creator<T, std::enable_if_t<std::is_base_of_v<godot::Wrapped, T>, bool>> {
|
|
// static T *_new() { return T::_new(); }
|
|
// };
|
|
|
|
}; // namespace internal
|
|
|
|
} // namespace godot
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
#define CHECK_CLASS_CONSTRUCTOR(m_constructor, m_class) \
|
|
if (unlikely(!m_constructor)) { \
|
|
ERR_PRINT_ONCE("Constructor for class " #m_class "not found. Likely wasn't registered in ClassDB."); \
|
|
return nullptr; \
|
|
} else \
|
|
((void)0)
|
|
#else
|
|
#define CHECK_CLASS_CONSTRUCTOR(m_constructor, m_class)
|
|
#endif
|
|
|
|
#define GDCLASS(m_class, m_inherits) \
|
|
private: \
|
|
friend class ClassDB; \
|
|
\
|
|
using SelfType = m_class; \
|
|
\
|
|
protected: \
|
|
static void (*_get_bind_methods())() { \
|
|
return &m_class::_bind_methods; \
|
|
} \
|
|
\
|
|
template <class T> \
|
|
static void register_virtuals() { \
|
|
m_inherits::register_virtuals<T>(); \
|
|
} \
|
|
\
|
|
public: \
|
|
static void initialize_class() { \
|
|
static bool initialized = false; \
|
|
if (initialized) { \
|
|
return; \
|
|
} \
|
|
m_inherits::initialize_class(); \
|
|
if (m_class::_get_bind_methods() != m_inherits::_get_bind_methods()) { \
|
|
_bind_methods(); \
|
|
m_inherits::register_virtuals<m_class>(); \
|
|
} \
|
|
initialized = true; \
|
|
} \
|
|
\
|
|
static const char *get_class_static() { \
|
|
return #m_class; \
|
|
} \
|
|
\
|
|
static const char *get_parent_class_static() { \
|
|
return #m_inherits; \
|
|
} \
|
|
\
|
|
static GDExtensionClassInstancePtr create(void *data) { \
|
|
return reinterpret_cast<GDExtensionClassInstancePtr>(new ("") m_class); \
|
|
} \
|
|
\
|
|
static void free(void *data, GDExtensionClassInstancePtr ptr) { \
|
|
if (ptr) { \
|
|
m_class *cls = reinterpret_cast<m_class *>(ptr); \
|
|
cls->~m_class(); \
|
|
::godot::Memory::free_static(cls); \
|
|
} \
|
|
} \
|
|
\
|
|
static void set_object_instance(GDExtensionClassInstancePtr p_instance, GDNativeObjectPtr p_object_instance) { \
|
|
godot::internal::gdn_interface->object_set_instance_binding(p_object_instance, godot::internal::token, p_instance, &m_class::___binding_callbacks); \
|
|
reinterpret_cast<m_class *>(p_instance)->_owner = reinterpret_cast<godot::GodotObject *>(p_object_instance); \
|
|
} \
|
|
\
|
|
static void *___binding_create_callback(void *p_token, void *p_instance) { \
|
|
return nullptr; \
|
|
} \
|
|
static void ___binding_free_callback(void *p_token, void *p_instance, void *p_binding) { \
|
|
} \
|
|
static GDNativeBool ___binding_reference_callback(void *p_token, void *p_instance, GDNativeBool p_reference) { \
|
|
return true; \
|
|
} \
|
|
static constexpr GDNativeInstanceBindingCallbacks ___binding_callbacks = { \
|
|
___binding_create_callback, \
|
|
___binding_free_callback, \
|
|
___binding_reference_callback, \
|
|
}; \
|
|
\
|
|
static m_class *_new() { \
|
|
static GDNativeExtensionPtr ___extension = nullptr; \
|
|
static GDNativeClassConstructor ___constructor = godot::internal::gdn_interface->classdb_get_constructor(#m_class, &___extension); \
|
|
CHECK_CLASS_CONSTRUCTOR(___constructor, m_class); \
|
|
GDNativeObjectPtr obj = godot::internal::gdn_interface->classdb_construct_object(___constructor, ___extension); \
|
|
return reinterpret_cast<m_class *>(godot::internal::gdn_interface->object_get_instance_binding(obj, godot::internal::token, &m_class::___binding_callbacks)); \
|
|
} \
|
|
\
|
|
private:
|
|
|
|
// Don't use this for your classes, use GDCLASS() instead.
|
|
#define GDNATIVE_CLASS(m_class, m_inherits) \
|
|
protected: \
|
|
static void (*_get_bind_methods())() { \
|
|
return nullptr; \
|
|
} \
|
|
\
|
|
public: \
|
|
static void initialize_class() {} \
|
|
\
|
|
static const char *get_class_static() { \
|
|
return #m_class; \
|
|
} \
|
|
\
|
|
static const char *get_parent_class_static() { \
|
|
return #m_inherits; \
|
|
} \
|
|
\
|
|
static void *___binding_create_callback(void *p_token, void *p_instance) { \
|
|
m_class *obj = new ("") m_class; \
|
|
obj->_owner = (godot::GodotObject *)p_instance; \
|
|
return obj; \
|
|
} \
|
|
static void ___binding_free_callback(void *p_token, void *p_instance, void *p_binding) { \
|
|
Memory::free_static(reinterpret_cast<m_class *>(p_binding)); \
|
|
} \
|
|
static GDNativeBool ___binding_reference_callback(void *p_token, void *p_instance, GDNativeBool p_reference) { \
|
|
return true; \
|
|
} \
|
|
static constexpr GDNativeInstanceBindingCallbacks ___binding_callbacks = { \
|
|
___binding_create_callback, \
|
|
___binding_free_callback, \
|
|
___binding_reference_callback, \
|
|
}; \
|
|
static m_class *_new() { \
|
|
static GDNativeClassConstructor ___constructor = godot::internal::gdn_interface->classdb_get_constructor(#m_class, nullptr); \
|
|
CHECK_CLASS_CONSTRUCTOR(___constructor, m_class); \
|
|
GDNativeObjectPtr obj = ___constructor(); \
|
|
return reinterpret_cast<m_class *>(godot::internal::gdn_interface->object_get_instance_binding(obj, godot::internal::token, &m_class::___binding_callbacks)); \
|
|
} \
|
|
\
|
|
private:
|
|
|
|
#endif // ! GODOT_CPP_WRAPPED_HPP
|