Cppcheck report - Godot - branch: 3.x, commit: cd92ad0f69a842d94dc2d56f83cbd8f724ed2959 (2024-12-15): modules/visual_script/visual_script_flow_control.cpp

/**************************************************************************/
/*  visual_script_flow_control.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 "visual_script_flow_control.h"

#include "core/io/resource_loader.h"
#include "core/os/keyboard.h"
#include "core/project_settings.h"

//////////////////////////////////////////
////////////////RETURN////////////////////
//////////////////////////////////////////

int VisualScriptReturn::get_output_sequence_port_count() const {
	return 0;
}

bool VisualScriptReturn::has_input_sequence_port() const {
	return true;
}

int VisualScriptReturn::get_input_value_port_count() const {
	return with_value ? 1 : 0;
}
int VisualScriptReturn::get_output_value_port_count() const {
	return 0;
}

String VisualScriptReturn::get_output_sequence_port_text(int p_port) const {
	return String();
}

PropertyInfo VisualScriptReturn::get_input_value_port_info(int p_idx) const {
	PropertyInfo pinfo;
	pinfo.name = "result";
	pinfo.type = type;
	return pinfo;
}
PropertyInfo VisualScriptReturn::get_output_value_port_info(int p_idx) const {
	return PropertyInfo();
}

String VisualScriptReturn::get_caption() const {
	return RTR("Return");
}

String VisualScriptReturn::get_text() const {
	return get_name();
}

void VisualScriptReturn::set_return_type(Variant::Type p_type) {
	if (type == p_type) {
		return;
	}
	type = p_type;
	ports_changed_notify();
}

Variant::Type VisualScriptReturn::get_return_type() const {
	return type;
}

void VisualScriptReturn::set_enable_return_value(bool p_enable) {
	if (with_value == p_enable) {
		return;
	}

	with_value = p_enable;
	ports_changed_notify();
}

bool VisualScriptReturn::is_return_value_enabled() const {
	return with_value;
}

void VisualScriptReturn::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_return_type", "type"), &VisualScriptReturn::set_return_type);
	ClassDB::bind_method(D_METHOD("get_return_type"), &VisualScriptReturn::get_return_type);
	ClassDB::bind_method(D_METHOD("set_enable_return_value", "enable"), &VisualScriptReturn::set_enable_return_value);
	ClassDB::bind_method(D_METHOD("is_return_value_enabled"), &VisualScriptReturn::is_return_value_enabled);

	String argt = "Any";
	for (int i = 1; i < Variant::VARIANT_MAX; i++) {
		argt += "," + Variant::get_type_name(Variant::Type(i));
	}

	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "return_enabled"), "set_enable_return_value", "is_return_value_enabled");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "return_type", PROPERTY_HINT_ENUM, argt), "set_return_type", "get_return_type");
}

class VisualScriptNodeInstanceReturn : public VisualScriptNodeInstance {
public:
	VisualScriptReturn *node;
	VisualScriptInstance *instance;
	bool with_value;

	virtual int get_working_memory_size() const { return 1; }<--- Function in derived class
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }

	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) {<--- Function in derived class
		if (with_value) {
			*p_working_mem = *p_inputs[0];
			return STEP_EXIT_FUNCTION_BIT;
		} else {
			*p_working_mem = Variant();
			return 0;
		}
	}
};

VisualScriptNodeInstance *VisualScriptReturn::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceReturn *instance = memnew(VisualScriptNodeInstanceReturn);
	instance->node = this;
	instance->instance = p_instance;
	instance->with_value = with_value;
	return instance;
}

VisualScriptReturn::VisualScriptReturn() {
	with_value = false;
	type = Variant::NIL;
<--- Variable 'type' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'type' a value by passing the value to the constructor in the initialization list.
}

template <bool with_value>
static Ref<VisualScriptNode> create_return_node(const String &p_name) {
	Ref<VisualScriptReturn> node;
	node.instance();
	node->set_enable_return_value(with_value);
	return node;
}

//////////////////////////////////////////
////////////////CONDITION/////////////////
//////////////////////////////////////////

int VisualScriptCondition::get_output_sequence_port_count() const {
	return 3;
}

bool VisualScriptCondition::has_input_sequence_port() const {
	return true;
}

int VisualScriptCondition::get_input_value_port_count() const {
	return 1;
}
int VisualScriptCondition::get_output_value_port_count() const {
	return 0;
}

String VisualScriptCondition::get_output_sequence_port_text(int p_port) const {
	if (p_port == 0) {
		return "true";
	} else if (p_port == 1) {
		return "false";
	} else {
		return "done";
	}
}

PropertyInfo VisualScriptCondition::get_input_value_port_info(int p_idx) const {
	PropertyInfo pinfo;
	pinfo.name = "cond";
	pinfo.type = Variant::BOOL;
	return pinfo;
}
PropertyInfo VisualScriptCondition::get_output_value_port_info(int p_idx) const {
	return PropertyInfo();
}

String VisualScriptCondition::get_caption() const {
	return RTR("Condition");
}

String VisualScriptCondition::get_text() const {
	return RTR("if (cond) is:");
}

void VisualScriptCondition::_bind_methods() {
}

class VisualScriptNodeInstanceCondition : public VisualScriptNodeInstance {
public:
	VisualScriptCondition *node;
	VisualScriptInstance *instance;

	//virtual int get_working_memory_size() const { return 1; }
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }

	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) {<--- Function in derived class
		if (p_start_mode == START_MODE_CONTINUE_SEQUENCE) {
			return 2;
		} else if (p_inputs[0]->operator bool()) {
			return 0 | STEP_FLAG_PUSH_STACK_BIT;
		} else {
			return 1 | STEP_FLAG_PUSH_STACK_BIT;
		}
	}
};

VisualScriptNodeInstance *VisualScriptCondition::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceCondition *instance = memnew(VisualScriptNodeInstanceCondition);
	instance->node = this;
	instance->instance = p_instance;
	return instance;
}

VisualScriptCondition::VisualScriptCondition() {
}

//////////////////////////////////////////
////////////////WHILE/////////////////
//////////////////////////////////////////

int VisualScriptWhile::get_output_sequence_port_count() const {
	return 2;
}

bool VisualScriptWhile::has_input_sequence_port() const {
	return true;
}

int VisualScriptWhile::get_input_value_port_count() const {
	return 1;
}
int VisualScriptWhile::get_output_value_port_count() const {
	return 0;
}

String VisualScriptWhile::get_output_sequence_port_text(int p_port) const {
	if (p_port == 0) {
		return "repeat";
	} else {
		return "exit";
	}
}

PropertyInfo VisualScriptWhile::get_input_value_port_info(int p_idx) const {
	PropertyInfo pinfo;
	pinfo.name = "cond";
	pinfo.type = Variant::BOOL;
	return pinfo;
}
PropertyInfo VisualScriptWhile::get_output_value_port_info(int p_idx) const {
	return PropertyInfo();
}

String VisualScriptWhile::get_caption() const {
	return RTR("While");
}

String VisualScriptWhile::get_text() const {
	return RTR("while (cond):");
}

void VisualScriptWhile::_bind_methods() {
}

class VisualScriptNodeInstanceWhile : public VisualScriptNodeInstance {
public:
	VisualScriptWhile *node;
	VisualScriptInstance *instance;

	//virtual int get_working_memory_size() const { return 1; }
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }

	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) {<--- Function in derived class
		bool keep_going = p_inputs[0]->operator bool();

		if (keep_going) {
			return 0 | STEP_FLAG_PUSH_STACK_BIT;
		} else {
			return 1;
		}
	}
};

VisualScriptNodeInstance *VisualScriptWhile::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceWhile *instance = memnew(VisualScriptNodeInstanceWhile);
	instance->node = this;
	instance->instance = p_instance;
	return instance;
}
VisualScriptWhile::VisualScriptWhile() {
}

//////////////////////////////////////////
////////////////ITERATOR/////////////////
//////////////////////////////////////////

int VisualScriptIterator::get_output_sequence_port_count() const {
	return 2;
}

bool VisualScriptIterator::has_input_sequence_port() const {
	return true;
}

int VisualScriptIterator::get_input_value_port_count() const {
	return 1;
}
int VisualScriptIterator::get_output_value_port_count() const {
	return 1;
}

String VisualScriptIterator::get_output_sequence_port_text(int p_port) const {
	if (p_port == 0) {
		return "each";
	} else {
		return "exit";
	}
}

PropertyInfo VisualScriptIterator::get_input_value_port_info(int p_idx) const {
	PropertyInfo pinfo;
	pinfo.name = "input";
	pinfo.type = Variant::NIL;
	return pinfo;
}
PropertyInfo VisualScriptIterator::get_output_value_port_info(int p_idx) const {
	PropertyInfo pinfo;
	pinfo.name = "elem";
	pinfo.type = Variant::NIL;
	return pinfo;
}
String VisualScriptIterator::get_caption() const {
	return RTR("Iterator");
}

String VisualScriptIterator::get_text() const {
	return RTR("for (elem) in (input):");
}

void VisualScriptIterator::_bind_methods() {
}

class VisualScriptNodeInstanceIterator : public VisualScriptNodeInstance {
public:
	VisualScriptIterator *node;
	VisualScriptInstance *instance;

	virtual int get_working_memory_size() const { return 2; }<--- Function in derived class
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }

	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) {<--- Function in derived class
		if (p_start_mode == START_MODE_BEGIN_SEQUENCE) {
			p_working_mem[0] = *p_inputs[0];
			bool valid;
			bool can_iter = p_inputs[0]->iter_init(p_working_mem[1], valid);

			if (!valid) {
				r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
				r_error_str = RTR("Input type not iterable:") + " " + Variant::get_type_name(p_inputs[0]->get_type());
				return 0;
			}

			if (!can_iter) {
				return 1; //nothing to iterate
			}

			*p_outputs[0] = p_working_mem[0].iter_get(p_working_mem[1], valid);

			if (!valid) {
				r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
				r_error_str = RTR("Iterator became invalid");
				return 0;
			}

		} else { //continue sequence

			bool valid;
			bool can_iter = p_working_mem[0].iter_next(p_working_mem[1], valid);

			if (!valid) {
				r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
				r_error_str = RTR("Iterator became invalid:") + " " + Variant::get_type_name(p_inputs[0]->get_type());
				return 0;
			}

			if (!can_iter) {
				return 1; //nothing to iterate
			}

			*p_outputs[0] = p_working_mem[0].iter_get(p_working_mem[1], valid);

			if (!valid) {
				r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
				r_error_str = RTR("Iterator became invalid");
				return 0;
			}
		}

		return 0 | STEP_FLAG_PUSH_STACK_BIT; //go around
	}
};

VisualScriptNodeInstance *VisualScriptIterator::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceIterator *instance = memnew(VisualScriptNodeInstanceIterator);
	instance->node = this;
	instance->instance = p_instance;
	return instance;
}

VisualScriptIterator::VisualScriptIterator() {
}

//////////////////////////////////////////
////////////////SEQUENCE/////////////////
//////////////////////////////////////////

int VisualScriptSequence::get_output_sequence_port_count() const {
	return steps;
}

bool VisualScriptSequence::has_input_sequence_port() const {
	return true;
}

int VisualScriptSequence::get_input_value_port_count() const {
	return 0;
}
int VisualScriptSequence::get_output_value_port_count() const {
	return 1;
}

String VisualScriptSequence::get_output_sequence_port_text(int p_port) const {
	return itos(p_port + 1);
}

PropertyInfo VisualScriptSequence::get_input_value_port_info(int p_idx) const {
	return PropertyInfo();
}
PropertyInfo VisualScriptSequence::get_output_value_port_info(int p_idx) const {
	return PropertyInfo(Variant::INT, "current");
}
String VisualScriptSequence::get_caption() const {
	return RTR("Sequence");
}

String VisualScriptSequence::get_text() const {
	return RTR("in order:");
}

void VisualScriptSequence::set_steps(int p_steps) {
	ERR_FAIL_COND(p_steps < 1);
	if (steps == p_steps) {
		return;
	}

	steps = p_steps;
	ports_changed_notify();
}

int VisualScriptSequence::get_steps() const {
	return steps;
}

void VisualScriptSequence::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_steps", "steps"), &VisualScriptSequence::set_steps);
	ClassDB::bind_method(D_METHOD("get_steps"), &VisualScriptSequence::get_steps);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "steps", PROPERTY_HINT_RANGE, "1,64,1"), "set_steps", "get_steps");
}

class VisualScriptNodeInstanceSequence : public VisualScriptNodeInstance {
public:
	VisualScriptSequence *node;
	VisualScriptInstance *instance;
	int steps;

	virtual int get_working_memory_size() const { return 1; }<--- Function in derived class
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return true; }

	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) {<--- Function in derived class
		if (p_start_mode == START_MODE_BEGIN_SEQUENCE) {
			p_working_mem[0] = 0;
		}

		int step = p_working_mem[0];

		*p_outputs[0] = step;

		if (step + 1 == steps) {
			return step;
		} else {
			p_working_mem[0] = step + 1;
			return step | STEP_FLAG_PUSH_STACK_BIT;
		}
	}
};

VisualScriptNodeInstance *VisualScriptSequence::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceSequence *instance = memnew(VisualScriptNodeInstanceSequence);
	instance->node = this;
	instance->instance = p_instance;
	instance->steps = steps;
	return instance;
}
VisualScriptSequence::VisualScriptSequence() {
	steps = 1;
}

//////////////////////////////////////////
////////////////EVENT TYPE FILTER///////////
//////////////////////////////////////////

int VisualScriptSwitch::get_output_sequence_port_count() const {
	return case_values.size() + 1;
}

bool VisualScriptSwitch::has_input_sequence_port() const {
	return true;
}

int VisualScriptSwitch::get_input_value_port_count() const {
	return case_values.size() + 1;
}
int VisualScriptSwitch::get_output_value_port_count() const {
	return 0;
}

String VisualScriptSwitch::get_output_sequence_port_text(int p_port) const {
	if (p_port == case_values.size()) {
		return "done";
	}

	return String();
}

PropertyInfo VisualScriptSwitch::get_input_value_port_info(int p_idx) const {
	if (p_idx < case_values.size()) {
		return PropertyInfo(case_values[p_idx].type, " =");
	} else {
		return PropertyInfo(Variant::NIL, "input");
	}
}

PropertyInfo VisualScriptSwitch::get_output_value_port_info(int p_idx) const {
	return PropertyInfo();
}

String VisualScriptSwitch::get_caption() const {
	return RTR("Switch");
}

String VisualScriptSwitch::get_text() const {
	return RTR("'input' is:");
}

class VisualScriptNodeInstanceSwitch : public VisualScriptNodeInstance {
public:
	VisualScriptInstance *instance;
	int case_count;

	//virtual int get_working_memory_size() const { return 0; }
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return false; }

	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) {<--- Function in derived class
		if (p_start_mode == START_MODE_CONTINUE_SEQUENCE) {
			return case_count; //exit
		}

		for (int i = 0; i < case_count; i++) {
			if (*p_inputs[i] == *p_inputs[case_count]) {
				return i | STEP_FLAG_PUSH_STACK_BIT;
			}
		}

		return case_count;
	}
};

VisualScriptNodeInstance *VisualScriptSwitch::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceSwitch *instance = memnew(VisualScriptNodeInstanceSwitch);
	instance->instance = p_instance;
	instance->case_count = case_values.size();
	return instance;
}

bool VisualScriptSwitch::_set(const StringName &p_name, const Variant &p_value) {
	if (String(p_name) == "case_count") {
		case_values.resize(p_value);
		_change_notify();
		ports_changed_notify();
		return true;
	}

	if (String(p_name).begins_with("case/")) {
		int idx = String(p_name).get_slice("/", 1).to_int();
		ERR_FAIL_INDEX_V(idx, case_values.size(), false);

		case_values.write[idx].type = Variant::Type(int(p_value));
		_change_notify();
		ports_changed_notify();

		return true;
	}

	return false;
}

bool VisualScriptSwitch::_get(const StringName &p_name, Variant &r_ret) const {
	if (String(p_name) == "case_count") {
		r_ret = case_values.size();
		return true;
	}

	if (String(p_name).begins_with("case/")) {
		int idx = String(p_name).get_slice("/", 1).to_int();
		ERR_FAIL_INDEX_V(idx, case_values.size(), false);

		r_ret = case_values[idx].type;
		return true;
	}

	return false;
}
void VisualScriptSwitch::_get_property_list(List<PropertyInfo> *p_list) const {
	p_list->push_back(PropertyInfo(Variant::INT, "case_count", PROPERTY_HINT_RANGE, "0,128"));

	String argt = "Any";
	for (int i = 1; i < Variant::VARIANT_MAX; i++) {
		argt += "," + Variant::get_type_name(Variant::Type(i));
	}

	for (int i = 0; i < case_values.size(); i++) {
		p_list->push_back(PropertyInfo(Variant::INT, "case/" + itos(i), PROPERTY_HINT_ENUM, argt));
	}
}

void VisualScriptSwitch::_bind_methods() {
}

VisualScriptSwitch::VisualScriptSwitch() {
}

//////////////////////////////////////////
////////////////TYPE CAST///////////
//////////////////////////////////////////

int VisualScriptTypeCast::get_output_sequence_port_count() const {
	return 2;
}

bool VisualScriptTypeCast::has_input_sequence_port() const {
	return true;
}

int VisualScriptTypeCast::get_input_value_port_count() const {
	return 1;
}
int VisualScriptTypeCast::get_output_value_port_count() const {
	return 1;
}

String VisualScriptTypeCast::get_output_sequence_port_text(int p_port) const {
	return p_port == 0 ? "yes" : "no";
}

PropertyInfo VisualScriptTypeCast::get_input_value_port_info(int p_idx) const {
	return PropertyInfo(Variant::OBJECT, "instance");
}

PropertyInfo VisualScriptTypeCast::get_output_value_port_info(int p_idx) const {
	return PropertyInfo(Variant::OBJECT, "", PROPERTY_HINT_TYPE_STRING, get_base_type());
}

String VisualScriptTypeCast::get_caption() const {
	return RTR("Type Cast");
}

String VisualScriptTypeCast::get_text() const {
	if (script != String()) {
		return vformat(RTR("Is %s?"), script.get_file());
	} else {
		return vformat(RTR("Is %s?"), base_type);
	}
}

void VisualScriptTypeCast::set_base_type(const StringName &p_type) {
	if (base_type == p_type) {
		return;
	}

	base_type = p_type;
	_change_notify();
	ports_changed_notify();
}

StringName VisualScriptTypeCast::get_base_type() const {
	return base_type;
}

void VisualScriptTypeCast::set_base_script(const String &p_path) {
	if (script == p_path) {
		return;
	}

	script = p_path;
	_change_notify();
	ports_changed_notify();
}
String VisualScriptTypeCast::get_base_script() const {
	return script;
}

VisualScriptTypeCast::TypeGuess VisualScriptTypeCast::guess_output_type(TypeGuess *p_inputs, int p_output) const {
	TypeGuess tg;
	tg.type = Variant::OBJECT;
	if (script != String()) {
		tg.script = ResourceLoader::load(script);
	}
	//if (!tg.script.is_valid()) {
	//	tg.gdclass = base_type;
	//}

	return tg;
}

class VisualScriptNodeInstanceTypeCast : public VisualScriptNodeInstance {
public:
	VisualScriptInstance *instance;
	StringName base_type;
	String script;

	//virtual int get_working_memory_size() const { return 0; }
	//virtual bool is_output_port_unsequenced(int p_idx) const { return false; }
	//virtual bool get_output_port_unsequenced(int p_idx,Variant* r_value,Variant* p_working_mem,String &r_error) const { return false; }

	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) {<--- Function in derived class
		Object *obj = *p_inputs[0];

		*p_outputs[0] = Variant();

		if (!obj) {
			r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
			r_error_str = "Instance is null";
			return 0;
		}

		if (script != String()) {
			Ref<Script> obj_script = obj->get_script();
			if (!obj_script.is_valid()) {
				return 1; //well, definitely not the script because object we got has no script.
			}

			if (!ResourceCache::has(script)) {
				//if the script is not in use by anyone, we can safely assume whatever we got is not casting to it.
				return 1;
			}
			Ref<Script> cast_script = Ref<Resource>(ResourceCache::get(script));
			if (!cast_script.is_valid()) {
				r_error.error = Variant::CallError::CALL_ERROR_INVALID_METHOD;
				r_error_str = "Script path is not a script: " + script;
				return 1;
			}

			while (obj_script.is_valid()) {
				if (cast_script == obj_script) {
					*p_outputs[0] = *p_inputs[0]; //copy
					return 0; // it is the script, yey
				}

				obj_script = obj_script->get_base_script();
			}

			return 1; //not found sorry
		}

		if (ClassDB::is_parent_class(obj->get_class_name(), base_type)) {
			*p_outputs[0] = *p_inputs[0]; //copy
			return 0;
		} else {
			return 1;
		}
	}
};

VisualScriptNodeInstance *VisualScriptTypeCast::instance(VisualScriptInstance *p_instance) {
	VisualScriptNodeInstanceTypeCast *instance = memnew(VisualScriptNodeInstanceTypeCast);
	instance->instance = p_instance;
	instance->base_type = base_type;
	instance->script = script;
	return instance;
}

void VisualScriptTypeCast::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_base_type", "type"), &VisualScriptTypeCast::set_base_type);
	ClassDB::bind_method(D_METHOD("get_base_type"), &VisualScriptTypeCast::get_base_type);

	ClassDB::bind_method(D_METHOD("set_base_script", "path"), &VisualScriptTypeCast::set_base_script);
	ClassDB::bind_method(D_METHOD("get_base_script"), &VisualScriptTypeCast::get_base_script);

	List<String> script_extensions;
	for (int i = 0; i > ScriptServer::get_language_count(); i++) {
		ScriptServer::get_language(i)->get_recognized_extensions(&script_extensions);
	}

	String script_ext_hint;
	for (List<String>::Element *E = script_extensions.front(); E; E = E->next()) {
		if (script_ext_hint != String()) {
			script_ext_hint += ",";
		}
		script_ext_hint += "*." + E->get();
	}

	ADD_PROPERTY(PropertyInfo(Variant::STRING, "base_type", PROPERTY_HINT_TYPE_STRING, "Object"), "set_base_type", "get_base_type");
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "base_script", PROPERTY_HINT_FILE, script_ext_hint), "set_base_script", "get_base_script");
}

VisualScriptTypeCast::VisualScriptTypeCast() {
	base_type = "Object";
<--- Variable 'base_type' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'base_type' a value by passing the value to the constructor in the initialization list.
}

void register_visual_script_flow_control_nodes() {
	VisualScriptLanguage::singleton->add_register_func("flow_control/return", create_return_node<false>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/return_with_value", create_return_node<true>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/condition", create_node_generic<VisualScriptCondition>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/while", create_node_generic<VisualScriptWhile>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/iterator", create_node_generic<VisualScriptIterator>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/sequence", create_node_generic<VisualScriptSequence>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/switch", create_node_generic<VisualScriptSwitch>);
	//VisualScriptLanguage::singleton->add_register_func("flow_control/input_filter", create_node_generic<VisualScriptInputFilter>);
	VisualScriptLanguage::singleton->add_register_func("flow_control/type_cast", create_node_generic<VisualScriptTypeCast>);
}