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Add CallableCustom that devs can use in their GDExtensions

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This commit is contained in:
David Snopek
2023-10-21 18:32:45 -05:00
parent 2dfe7929de
commit d33bd47219
12 changed files with 335 additions and 53 deletions
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113
src/variant/callable_custom.cpp Normal file
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/**************************************************************************/
/* callable_custom.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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. */
/**************************************************************************/
#include <godot_cpp/variant/callable_custom.hpp>
#include <godot_cpp/core/object.hpp>
#include <godot_cpp/variant/callable.hpp>
namespace godot {
static void callable_custom_call(void *p_userdata, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionVariantPtr r_return, GDExtensionCallError *r_error) {
CallableCustom *callable_custom = (CallableCustom *)p_userdata;
callable_custom->call((const Variant **)p_args, p_argument_count, *(Variant *)r_return, *r_error);
}
static GDExtensionBool callable_custom_is_valid(void *p_userdata) {
CallableCustom *callable_custom = (CallableCustom *)p_userdata;
return callable_custom->is_valid();
}
static void callable_custom_free(void *p_userdata) {
CallableCustom *callable_custom = (CallableCustom *)p_userdata;
memdelete(callable_custom);
}
static uint32_t callable_custom_hash(void *p_userdata) {
CallableCustom *callable_custom = (CallableCustom *)p_userdata;
return callable_custom->hash();
}
static void callable_custom_to_string(void *p_userdata, GDExtensionBool *r_is_valid, GDExtensionStringPtr r_out) {
CallableCustom *callable_custom = (CallableCustom *)p_userdata;
*((String *)r_out) = callable_custom->get_as_text();
*r_is_valid = true;
}
static GDExtensionBool callable_custom_equal_func(void *p_a, void *p_b) {
CallableCustom *a = (CallableCustom *)p_a;
CallableCustom *b = (CallableCustom *)p_b;
CallableCustom::CompareEqualFunc func_a = a->get_compare_equal_func();
CallableCustom::CompareEqualFunc func_b = b->get_compare_equal_func();
if (func_a != func_b) {
return false;
}
return func_a(a, b);
}
static GDExtensionBool callable_custom_less_than_func(void *p_a, void *p_b) {
CallableCustom *a = (CallableCustom *)p_a;
CallableCustom *b = (CallableCustom *)p_b;
CallableCustom::CompareEqualFunc func_a = a->get_compare_less_func();
CallableCustom::CompareEqualFunc func_b = b->get_compare_less_func();
if (func_a != func_b) {
// Just compare the addresses.
return p_a < p_b;
}
return func_a(a, b);
}
bool CallableCustom::is_valid() const {
// The same default implementation as in Godot.
return ObjectDB::get_instance(get_object());
}
Callable::Callable(CallableCustom *p_callable_custom) {
GDExtensionCallableCustomInfo info = {};
info.callable_userdata = p_callable_custom;
info.token = internal::token;
info.object_id = p_callable_custom->get_object();
info.call_func = &callable_custom_call;
info.is_valid_func = &callable_custom_is_valid;
info.free_func = &callable_custom_free;
info.hash_func = &callable_custom_hash;
info.equal_func = &callable_custom_equal_func;
info.less_than_func = &callable_custom_less_than_func;
info.to_string_func = &callable_custom_to_string;
::godot::internal::gdextension_interface_callable_custom_create(_native_ptr(), &info);
}
CallableCustom *Callable::get_custom() const {
CallableCustomBase *callable_custom = (CallableCustomBase *)::godot::internal::gdextension_interface_callable_custom_get_userdata(_native_ptr(), internal::token);
return dynamic_cast<CallableCustom *>(callable_custom);
}
} // namespace godot