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Allow GDExtensions to register virtual methods and call them on scripts

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This commit is contained in:
David Snopek
2024-01-20 19:40:43 -06:00
parent 51991e2014
commit be11002e41
6 changed files with 120 additions and 1 deletions
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29
core/extension/gdextension_interface.cpp
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@@ -1194,6 +1194,33 @@ static GDObjectInstanceID gdextension_object_get_instance_id(GDExtensionConstObj
return (GDObjectInstanceID)o->get_instance_id();
}
static GDExtensionBool gdextension_object_has_script_method(GDExtensionConstObjectPtr p_object, GDExtensionConstStringNamePtr p_method) {
Object *o = (Object *)p_object;
const StringName method = *reinterpret_cast<const StringName *>(p_method);
ScriptInstance *script_instance = o->get_script_instance();
if (script_instance) {
return script_instance->has_method(method);
}
return false;
}
static void gdextension_object_call_script_method(GDExtensionObjectPtr p_object, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
Object *o = (Object *)p_object;
const StringName method = *reinterpret_cast<const StringName *>(p_method);
const Variant **args = (const Variant **)p_args;
Callable::CallError error;
memnew_placement(r_return, Variant);
*(Variant *)r_return = o->callp(method, args, p_argument_count, error);
if (r_error) {
r_error->error = (GDExtensionCallErrorType)(error.error);
r_error->argument = error.argument;
r_error->expected = error.expected;
}
}
static GDExtensionObjectPtr gdextension_ref_get_object(GDExtensionConstRefPtr p_ref) {
const Ref<RefCounted> *ref = (const Ref<RefCounted> *)p_ref;
if (ref == nullptr || ref->is_null()) {
@@ -1515,6 +1542,8 @@ void gdextension_setup_interface() {
REGISTER_INTERFACE_FUNC(object_cast_to);
REGISTER_INTERFACE_FUNC(object_get_instance_from_id);
REGISTER_INTERFACE_FUNC(object_get_instance_id);
REGISTER_INTERFACE_FUNC(object_has_script_method);
REGISTER_INTERFACE_FUNC(object_call_script_method);
REGISTER_INTERFACE_FUNC(ref_get_object);
REGISTER_INTERFACE_FUNC(ref_set_object);
#ifndef DISABLE_DEPRECATED