cacced7e50
Currently we rely on some undefined behavior when Object->cast_to() gets called with a Null pointer. This used to work fine with GCC < 6 but newer versions of GCC remove all codepaths in which the this pointer is Null. However, the non-static cast_to() was supposed to be null safe. This patch makes cast_to() Null safe and removes the now redundant Null checks where they existed. It is explained in this article: https://www.viva64.com/en/b/0226/
606 lines
17 KiB
C++
606 lines
17 KiB
C++
/*************************************************************************/
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/* visual_script_yield_nodes.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "visual_script_yield_nodes.h"
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#include "os/os.h"
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#include "scene/main/node.h"
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#include "scene/main/scene_tree.h"
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#include "visual_script_nodes.h"
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//////////////////////////////////////////
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////////////////YIELD///////////
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//////////////////////////////////////////
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int VisualScriptYield::get_output_sequence_port_count() const {
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return 1;
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}
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bool VisualScriptYield::has_input_sequence_port() const {
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return true;
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}
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int VisualScriptYield::get_input_value_port_count() const {
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return 0;
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}
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int VisualScriptYield::get_output_value_port_count() const {
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return 0;
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}
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String VisualScriptYield::get_output_sequence_port_text(int p_port) const {
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return String();
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}
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PropertyInfo VisualScriptYield::get_input_value_port_info(int p_idx) const {
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return PropertyInfo();
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}
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PropertyInfo VisualScriptYield::get_output_value_port_info(int p_idx) const {
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return PropertyInfo();
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}
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String VisualScriptYield::get_caption() const {
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return yield_mode == YIELD_RETURN ? "Yield" : "Wait";
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}
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String VisualScriptYield::get_text() const {
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switch (yield_mode) {
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case YIELD_RETURN: return ""; break;
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case YIELD_FRAME: return "Next Frame"; break;
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case YIELD_FIXED_FRAME: return "Next Fixed Frame"; break;
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case YIELD_WAIT: return rtos(wait_time) + " sec(s)"; break;
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}
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return String();
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}
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class VisualScriptNodeInstanceYield : public VisualScriptNodeInstance {
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public:
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VisualScriptYield::YieldMode mode;
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float wait_time;
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virtual int get_working_memory_size() const { return 1; } //yield needs at least 1
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//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
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//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return false; }
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virtual int step(const Variant **p_inputs, Variant **p_outputs, StartMode p_start_mode, Variant *p_working_mem, Variant::CallError &r_error, String &r_error_str) {
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if (p_start_mode == START_MODE_RESUME_YIELD) {
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return 0; //resuming yield
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} else {
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//yield
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SceneTree *tree = Object::cast_to<SceneTree>(OS::get_singleton()->get_main_loop());
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if (!tree) {
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r_error_str = "Main Loop is not SceneTree";
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r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
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return 0;
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}
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Ref<VisualScriptFunctionState> state;
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state.instance();
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int ret = STEP_YIELD_BIT;
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switch (mode) {
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case VisualScriptYield::YIELD_RETURN:
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ret = STEP_EXIT_FUNCTION_BIT;
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break; //return the yield
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case VisualScriptYield::YIELD_FRAME: state->connect_to_signal(tree, "idle_frame", Array()); break;
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case VisualScriptYield::YIELD_FIXED_FRAME: state->connect_to_signal(tree, "fixed_frame", Array()); break;
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case VisualScriptYield::YIELD_WAIT: state->connect_to_signal(tree->create_timer(wait_time).ptr(), "timeout", Array()); break;
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}
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*p_working_mem = state;
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return ret;
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}
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}
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};
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VisualScriptNodeInstance *VisualScriptYield::instance(VisualScriptInstance *p_instance) {
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VisualScriptNodeInstanceYield *instance = memnew(VisualScriptNodeInstanceYield);
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//instance->instance=p_instance;
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instance->mode = yield_mode;
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instance->wait_time = wait_time;
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return instance;
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}
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void VisualScriptYield::set_yield_mode(YieldMode p_mode) {
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if (yield_mode == p_mode)
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return;
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yield_mode = p_mode;
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ports_changed_notify();
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_change_notify();
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}
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VisualScriptYield::YieldMode VisualScriptYield::get_yield_mode() {
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return yield_mode;
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}
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void VisualScriptYield::set_wait_time(float p_time) {
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if (wait_time == p_time)
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return;
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wait_time = p_time;
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ports_changed_notify();
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}
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float VisualScriptYield::get_wait_time() {
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return wait_time;
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}
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void VisualScriptYield::_validate_property(PropertyInfo &property) const {
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if (property.name == "wait_time") {
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if (yield_mode != YIELD_WAIT) {
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property.usage = 0;
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}
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}
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}
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void VisualScriptYield::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_yield_mode", "mode"), &VisualScriptYield::set_yield_mode);
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ClassDB::bind_method(D_METHOD("get_yield_mode"), &VisualScriptYield::get_yield_mode);
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ClassDB::bind_method(D_METHOD("set_wait_time", "sec"), &VisualScriptYield::set_wait_time);
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ClassDB::bind_method(D_METHOD("get_wait_time"), &VisualScriptYield::get_wait_time);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "mode", PROPERTY_HINT_ENUM, "Frame,FixedFrame,Time", PROPERTY_USAGE_NOEDITOR), "set_yield_mode", "get_yield_mode");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "wait_time"), "set_wait_time", "get_wait_time");
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BIND_ENUM_CONSTANT(YIELD_FRAME);
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BIND_ENUM_CONSTANT(YIELD_FIXED_FRAME);
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BIND_ENUM_CONSTANT(YIELD_WAIT);
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}
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VisualScriptYield::VisualScriptYield() {
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yield_mode = YIELD_FRAME;
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wait_time = 1;
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}
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template <VisualScriptYield::YieldMode MODE>
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static Ref<VisualScriptNode> create_yield_node(const String &p_name) {
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Ref<VisualScriptYield> node;
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node.instance();
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node->set_yield_mode(MODE);
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return node;
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}
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///////////////////////////////////////////////////
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////////////////YIELD SIGNAL//////////////////////
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//////////////////////////////////////////////////
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int VisualScriptYieldSignal::get_output_sequence_port_count() const {
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return 1;
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}
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bool VisualScriptYieldSignal::has_input_sequence_port() const {
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return true;
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}
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#ifdef TOOLS_ENABLED
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static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {
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if (p_edited_scene != p_current_node && p_current_node->get_owner() != p_edited_scene)
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return NULL;
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Ref<Script> scr = p_current_node->get_script();
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if (scr.is_valid() && scr == script)
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return p_current_node;
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for (int i = 0; i < p_current_node->get_child_count(); i++) {
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Node *n = _find_script_node(p_edited_scene, p_current_node->get_child(i), script);
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if (n)
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return n;
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}
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return NULL;
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}
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#endif
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Node *VisualScriptYieldSignal::_get_base_node() const {
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#ifdef TOOLS_ENABLED
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Ref<Script> script = get_visual_script();
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if (!script.is_valid())
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return NULL;
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MainLoop *main_loop = OS::get_singleton()->get_main_loop();
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SceneTree *scene_tree = Object::cast_to<SceneTree>(main_loop);
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if (!scene_tree)
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return NULL;
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Node *edited_scene = scene_tree->get_edited_scene_root();
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if (!edited_scene)
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return NULL;
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Node *script_node = _find_script_node(edited_scene, edited_scene, script);
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if (!script_node)
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return NULL;
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if (!script_node->has_node(base_path))
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return NULL;
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Node *path_to = script_node->get_node(base_path);
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return path_to;
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#else
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return NULL;
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#endif
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}
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StringName VisualScriptYieldSignal::_get_base_type() const {
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if (call_mode == CALL_MODE_SELF && get_visual_script().is_valid())
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return get_visual_script()->get_instance_base_type();
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else if (call_mode == CALL_MODE_NODE_PATH && get_visual_script().is_valid()) {
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Node *path = _get_base_node();
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if (path)
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return path->get_class();
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}
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return base_type;
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}
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int VisualScriptYieldSignal::get_input_value_port_count() const {
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if (call_mode == CALL_MODE_INSTANCE)
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return 1;
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else
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return 0;
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}
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int VisualScriptYieldSignal::get_output_value_port_count() const {
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MethodInfo sr;
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if (!ClassDB::get_signal(_get_base_type(), signal, &sr))
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return 0;
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return sr.arguments.size();
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}
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String VisualScriptYieldSignal::get_output_sequence_port_text(int p_port) const {
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return String();
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}
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PropertyInfo VisualScriptYieldSignal::get_input_value_port_info(int p_idx) const {
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if (call_mode == CALL_MODE_INSTANCE)
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return PropertyInfo(Variant::OBJECT, "instance");
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else
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return PropertyInfo();
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}
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PropertyInfo VisualScriptYieldSignal::get_output_value_port_info(int p_idx) const {
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MethodInfo sr;
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if (!ClassDB::get_signal(_get_base_type(), signal, &sr))
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return PropertyInfo(); //no signal
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ERR_FAIL_INDEX_V(p_idx, sr.arguments.size(), PropertyInfo());
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return sr.arguments[p_idx];
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}
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String VisualScriptYieldSignal::get_caption() const {
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static const char *cname[3] = {
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"WaitSignal",
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"WaitNodeSignal",
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"WaitInstanceSigna;",
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};
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return cname[call_mode];
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}
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String VisualScriptYieldSignal::get_text() const {
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if (call_mode == CALL_MODE_SELF)
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return " " + String(signal) + "()";
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else
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return " " + _get_base_type() + "." + String(signal) + "()";
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}
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void VisualScriptYieldSignal::set_base_type(const StringName &p_type) {
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if (base_type == p_type)
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return;
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base_type = p_type;
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_change_notify();
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ports_changed_notify();
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}
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StringName VisualScriptYieldSignal::get_base_type() const {
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return base_type;
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}
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void VisualScriptYieldSignal::set_signal(const StringName &p_type) {
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if (signal == p_type)
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return;
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signal = p_type;
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_change_notify();
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ports_changed_notify();
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}
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StringName VisualScriptYieldSignal::get_signal() const {
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return signal;
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}
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void VisualScriptYieldSignal::set_base_path(const NodePath &p_type) {
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if (base_path == p_type)
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return;
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base_path = p_type;
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_change_notify();
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ports_changed_notify();
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}
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NodePath VisualScriptYieldSignal::get_base_path() const {
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return base_path;
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}
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void VisualScriptYieldSignal::set_call_mode(CallMode p_mode) {
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if (call_mode == p_mode)
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return;
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call_mode = p_mode;
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_change_notify();
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ports_changed_notify();
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}
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VisualScriptYieldSignal::CallMode VisualScriptYieldSignal::get_call_mode() const {
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return call_mode;
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}
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void VisualScriptYieldSignal::_validate_property(PropertyInfo &property) const {
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if (property.name == "base_type") {
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if (call_mode != CALL_MODE_INSTANCE) {
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property.usage = PROPERTY_USAGE_NOEDITOR;
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}
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}
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if (property.name == "node_path") {
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if (call_mode != CALL_MODE_NODE_PATH) {
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property.usage = 0;
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} else {
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Node *bnode = _get_base_node();
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if (bnode) {
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property.hint_string = bnode->get_path(); //convert to loong string
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} else {
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}
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}
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}
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if (property.name == "signal") {
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property.hint = PROPERTY_HINT_ENUM;
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List<MethodInfo> methods;
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ClassDB::get_signal_list(_get_base_type(), &methods);
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List<String> mstring;
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for (List<MethodInfo>::Element *E = methods.front(); E; E = E->next()) {
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if (E->get().name.begins_with("_"))
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continue;
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mstring.push_back(E->get().name.get_slice(":", 0));
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}
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mstring.sort();
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String ml;
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for (List<String>::Element *E = mstring.front(); E; E = E->next()) {
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if (ml != String())
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ml += ",";
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ml += E->get();
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}
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property.hint_string = ml;
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}
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}
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void VisualScriptYieldSignal::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_base_type", "base_type"), &VisualScriptYieldSignal::set_base_type);
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ClassDB::bind_method(D_METHOD("get_base_type"), &VisualScriptYieldSignal::get_base_type);
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ClassDB::bind_method(D_METHOD("set_signal", "signal"), &VisualScriptYieldSignal::set_signal);
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ClassDB::bind_method(D_METHOD("get_signal"), &VisualScriptYieldSignal::get_signal);
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ClassDB::bind_method(D_METHOD("set_call_mode", "mode"), &VisualScriptYieldSignal::set_call_mode);
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ClassDB::bind_method(D_METHOD("get_call_mode"), &VisualScriptYieldSignal::get_call_mode);
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ClassDB::bind_method(D_METHOD("set_base_path", "base_path"), &VisualScriptYieldSignal::set_base_path);
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ClassDB::bind_method(D_METHOD("get_base_path"), &VisualScriptYieldSignal::get_base_path);
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String bt;
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for (int i = 0; i < Variant::VARIANT_MAX; i++) {
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if (i > 0)
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bt += ",";
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bt += Variant::get_type_name(Variant::Type(i));
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}
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ADD_PROPERTY(PropertyInfo(Variant::INT, "call_mode", PROPERTY_HINT_ENUM, "Self,Node Path,Instance"), "set_call_mode", "get_call_mode");
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ADD_PROPERTY(PropertyInfo(Variant::STRING, "base_type", PROPERTY_HINT_TYPE_STRING, "Object"), "set_base_type", "get_base_type");
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ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "node_path", PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE), "set_base_path", "get_base_path");
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ADD_PROPERTY(PropertyInfo(Variant::STRING, "signal"), "set_signal", "get_signal");
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BIND_ENUM_CONSTANT(CALL_MODE_SELF);
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BIND_ENUM_CONSTANT(CALL_MODE_NODE_PATH);
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BIND_ENUM_CONSTANT(CALL_MODE_INSTANCE);
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}
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class VisualScriptNodeInstanceYieldSignal : public VisualScriptNodeInstance {
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public:
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VisualScriptYieldSignal::CallMode call_mode;
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NodePath node_path;
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int output_args;
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StringName signal;
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VisualScriptYieldSignal *node;
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VisualScriptInstance *instance;
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virtual int get_working_memory_size() const { return 1; }
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//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
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//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }
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virtual int step(const Variant **p_inputs, Variant **p_outputs, StartMode p_start_mode, Variant *p_working_mem, Variant::CallError &r_error, String &r_error_str) {
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if (p_start_mode == START_MODE_RESUME_YIELD) {
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return 0; //resuming yield
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} else {
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//yield
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Object *object;
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switch (call_mode) {
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case VisualScriptYieldSignal::CALL_MODE_SELF: {
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object = instance->get_owner_ptr();
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} break;
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case VisualScriptYieldSignal::CALL_MODE_NODE_PATH: {
|
|
|
|
Node *node = Object::cast_to<Node>(instance->get_owner_ptr());
|
|
if (!node) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
r_error_str = "Base object is not a Node!";
|
|
return 0;
|
|
}
|
|
|
|
Node *another = node->get_node(node_path);
|
|
if (!node) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
r_error_str = "Path does not lead Node!";
|
|
return 0;
|
|
}
|
|
|
|
object = another;
|
|
|
|
} break;
|
|
case VisualScriptYieldSignal::CALL_MODE_INSTANCE: {
|
|
|
|
object = *p_inputs[0];
|
|
if (!object) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
|
|
r_error_str = "Supplied instance input is null.";
|
|
return 0;
|
|
}
|
|
|
|
} break;
|
|
}
|
|
|
|
Ref<VisualScriptFunctionState> state;
|
|
state.instance();
|
|
|
|
state->connect_to_signal(object, signal, Array());
|
|
|
|
*p_working_mem = state;
|
|
|
|
return STEP_YIELD_BIT;
|
|
}
|
|
}
|
|
};
|
|
|
|
VisualScriptNodeInstance *VisualScriptYieldSignal::instance(VisualScriptInstance *p_instance) {
|
|
|
|
VisualScriptNodeInstanceYieldSignal *instance = memnew(VisualScriptNodeInstanceYieldSignal);
|
|
instance->node = this;
|
|
instance->instance = p_instance;
|
|
instance->signal = signal;
|
|
instance->call_mode = call_mode;
|
|
instance->node_path = base_path;
|
|
instance->output_args = get_output_value_port_count();
|
|
return instance;
|
|
}
|
|
VisualScriptYieldSignal::VisualScriptYieldSignal() {
|
|
|
|
call_mode = CALL_MODE_SELF;
|
|
base_type = "Object";
|
|
}
|
|
|
|
template <VisualScriptYieldSignal::CallMode cmode>
|
|
static Ref<VisualScriptNode> create_yield_signal_node(const String &p_name) {
|
|
|
|
Ref<VisualScriptYieldSignal> node;
|
|
node.instance();
|
|
node->set_call_mode(cmode);
|
|
return node;
|
|
}
|
|
|
|
void register_visual_script_yield_nodes() {
|
|
|
|
VisualScriptLanguage::singleton->add_register_func("functions/wait/wait_frame", create_yield_node<VisualScriptYield::YIELD_FRAME>);
|
|
VisualScriptLanguage::singleton->add_register_func("functions/wait/wait_fixed_frame", create_yield_node<VisualScriptYield::YIELD_FIXED_FRAME>);
|
|
VisualScriptLanguage::singleton->add_register_func("functions/wait/wait_time", create_yield_node<VisualScriptYield::YIELD_WAIT>);
|
|
|
|
VisualScriptLanguage::singleton->add_register_func("functions/yield", create_yield_node<VisualScriptYield::YIELD_RETURN>);
|
|
VisualScriptLanguage::singleton->add_register_func("functions/yield_signal", create_node_generic<VisualScriptYieldSignal>);
|
|
}
|