beehave_selector_random.cpp

/**************************************************************************/
/*  beehave_selector_random.cpp                                           */
/**************************************************************************/
/*                         This file is part of:                          */
/*                               BEEHAVE                                  */
/*                      https://bitbra.in/beehave                         */
/**************************************************************************/
/* Copyright (c) 2024-present Beehave Contributors.                       */
/*                                                                        */
/* 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. */
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/**************************************************************************/

#include "beehave_selector_random.h"
#include <variant/utility_functions.hpp>

using namespace godot;

BeehaveSelectorRandom::BeehaveSelectorRandom() {
	if (random_seed == 0) {
		UtilityFunctions::randomize();
	}
}

BeehaveSelectorRandom::~BeehaveSelectorRandom() {

}

void BeehaveSelectorRandom::_bind_methods() {

}

BeehaveTickStatus BeehaveSelectorRandom::tick(Ref<BeehaveContext> context) {
	if (_children_bag.is_empty()) {
		_children_bag = get_shuffled_children();
	} 

	// Since we're going to remove children from the array, iterate it in reverse order.
	for (int i = _children_bag.size() - 1; i >= 0; --i) {
		BeehaveTreeNode *child = cast_node(Object::cast_to<Node>(_children_bag[i]));
		if (child == nullptr) {
			// skip anything that is not a valid beehave node
			continue;
		}

		if (child != running_child) {
			child->before_run(context);
		}

		BeehaveTickStatus response = child->tick(context);

		switch (response) {
			case SUCCESS:
				_children_bag.erase(child);
				child->after_run(context);
				return SUCCESS;
			case FAILURE:
				_children_bag.erase(child);
				child->after_run(context);
				break;
			case RUNNING:
				if (child != running_child) {
					if (running_child) {
						running_child->interrupt(context);
					}
					running_child = child;
				}
				return RUNNING;
		}
	}
	return BeehaveTickStatus::FAILURE;
}

void BeehaveSelectorRandom::after_run(Ref<BeehaveContext> context) {
	_children_bag = get_shuffled_children();
	BeehaveCompositeRandom::after_run(context);
}

void BeehaveSelectorRandom::interrupt(Ref<BeehaveContext> context) {
	_children_bag = get_shuffled_children();
	BeehaveCompositeRandom::interrupt(context);
}