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Allow registering "runtime classes" in modules (not just GDExtension)

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This commit is contained in:
David Snopek
2024-02-21 17:56:50 -06:00
parent 16d61427ca
commit 4d0b989bb8
4 changed files with 111 additions and 19 deletions
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61
core/object/class_db.cpp
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@ -178,6 +178,7 @@ public:
while (native_parent->gdextension) {
native_parent = native_parent->inherits_ptr;
}
ERR_FAIL_NULL_V(native_parent->creation_func, nullptr);
// Construct a placeholder.
Object *obj = native_parent->creation_func();
@ -501,7 +502,7 @@ Object *ClassDB::_instantiate_internal(const StringName &p_class, bool p_require
if (ti->gdextension && ti->gdextension->create_instance) {
ObjectGDExtension *extension = ti->gdextension;
#ifdef TOOLS_ENABLED
if (!p_require_real_class && ti->gdextension->is_runtime && Engine::get_singleton()->is_editor_hint()) {
if (!p_require_real_class && ti->is_runtime && Engine::get_singleton()->is_editor_hint()) {
extension = get_placeholder_extension(ti->name);
}
#endif
@ -514,6 +515,17 @@ Object *ClassDB::_instantiate_internal(const StringName &p_class, bool p_require
#endif
return obj;
} else {
#ifdef TOOLS_ENABLED
if (!p_require_real_class && ti->is_runtime && Engine::get_singleton()->is_editor_hint()) {
if (!ti->inherits_ptr || !ti->inherits_ptr->creation_func) {
ERR_PRINT_ONCE(vformat("Cannot make a placeholder instance of runtime class %s because its parent cannot be constructed.", ti->name));
} else {
ObjectGDExtension *extension = get_placeholder_extension(ti->name);
return (Object *)extension->create_instance(extension->class_userdata);
}
}
#endif
return ti->creation_func();
}
}
@ -544,26 +556,42 @@ ObjectGDExtension *ClassDB::get_placeholder_extension(const StringName &p_class)
}
ERR_FAIL_NULL_V_MSG(ti, nullptr, "Cannot get class '" + String(p_class) + "'.");
ERR_FAIL_COND_V_MSG(ti->disabled, nullptr, "Class '" + String(p_class) + "' is disabled.");
ERR_FAIL_NULL_V_MSG(ti->gdextension, nullptr, "Class '" + String(p_class) + "' has no native extension.");
}
// Make a "fake" extension to act as a placeholder.
placeholder_extensions[p_class] = ObjectGDExtension();
placeholder_extension = placeholder_extensions.getptr(p_class);
// Make a "fake" extension to act as a placeholder.
placeholder_extension->library = ti->gdextension->library;
placeholder_extension->parent = ti->gdextension->parent;
placeholder_extension->children = ti->gdextension->children;
placeholder_extension->parent_class_name = ti->gdextension->parent_class_name;
placeholder_extension->class_name = ti->gdextension->class_name;
placeholder_extension->editor_class = ti->gdextension->editor_class;
placeholder_extension->reloadable = ti->gdextension->reloadable;
placeholder_extension->is_virtual = ti->gdextension->is_virtual;
placeholder_extension->is_abstract = ti->gdextension->is_abstract;
placeholder_extension->is_exposed = ti->gdextension->is_exposed;
placeholder_extension->is_runtime = true;
placeholder_extension->is_placeholder = true;
if (ti->gdextension) {
placeholder_extension->library = ti->gdextension->library;
placeholder_extension->parent = ti->gdextension->parent;
placeholder_extension->children = ti->gdextension->children;
placeholder_extension->parent_class_name = ti->gdextension->parent_class_name;
placeholder_extension->class_name = ti->gdextension->class_name;
placeholder_extension->editor_class = ti->gdextension->editor_class;
placeholder_extension->reloadable = ti->gdextension->reloadable;
placeholder_extension->is_virtual = ti->gdextension->is_virtual;
placeholder_extension->is_abstract = ti->gdextension->is_abstract;
placeholder_extension->is_exposed = ti->gdextension->is_exposed;
placeholder_extension->tracking_userdata = ti->gdextension->tracking_userdata;
placeholder_extension->track_instance = ti->gdextension->track_instance;
placeholder_extension->untrack_instance = ti->gdextension->untrack_instance;
} else {
placeholder_extension->library = nullptr;
placeholder_extension->parent = nullptr;
placeholder_extension->parent_class_name = ti->inherits;
placeholder_extension->class_name = ti->name;
placeholder_extension->editor_class = ti->api == API_EDITOR;
placeholder_extension->reloadable = false;
placeholder_extension->is_virtual = ti->is_virtual;
placeholder_extension->is_abstract = false;
placeholder_extension->is_exposed = ti->exposed;
}
placeholder_extension->set = &PlaceholderExtensionInstance::placeholder_instance_set;
placeholder_extension->get = &PlaceholderExtensionInstance::placeholder_instance_get;
placeholder_extension->get_property_list = &PlaceholderExtensionInstance::placeholder_instance_get_property_list;
@ -586,10 +614,6 @@ ObjectGDExtension *ClassDB::get_placeholder_extension(const StringName &p_class)
placeholder_extension->call_virtual_with_data = nullptr;
placeholder_extension->recreate_instance = &PlaceholderExtensionInstance::placeholder_class_recreate_instance;
placeholder_extension->tracking_userdata = ti->gdextension->tracking_userdata;
placeholder_extension->track_instance = ti->gdextension->track_instance;
placeholder_extension->untrack_instance = ti->gdextension->untrack_instance;
return placeholder_extension;
}
#endif
@ -2028,6 +2052,9 @@ void ClassDB::register_extension_class(ObjectGDExtension *p_extension) {
}
}
c.reloadable = p_extension->reloadable;
#ifdef TOOLS_ENABLED
c.is_runtime = p_extension->is_runtime;
#endif
classes[p_extension->class_name] = c;
}