#include "ChoiceQueue.hpp"

bool CreatureLib::Battling::ChoiceQueue::MoveCreatureChoiceNext(CreatureLib::Battling::Creature* creature) {
    EnsureNotNull(creature)
    // Find which index the creature choice is at.
    size_t choiceIndex = SIZE_MAX;
    for (size_t index = _current; index < _queue.size(); index++) {
        if (_queue[index]->GetUser() == creature) {
            // If the creature choice is already next up, return.
            if (index == _current)
                return false;
            choiceIndex = index;
        }
    }
    // If the creature has no choice anymore, return.
    if (choiceIndex == SIZE_MAX)
        return false;

    // Save the pointer to the creature choice.
    auto creatureChoice = _queue[choiceIndex];
    // Starting at the position before the current creature choice, and iterating backwards up till the current choice.
    for (size_t i = choiceIndex - 1; i >= _current && i != SIZE_MAX; i--) {
        // Place everything in one spot later.
        _queue[i + 1] = _queue[i];
    }
    // Set the creature choice up next.
    _queue[_current] = creatureChoice;
    return true;
}