state.cpp

#include "state.h"

#include <exception>
#include <cstring>

#include "spdlog/spdlog.h"

void state::push() const {
    spdlog::get("state")->debug("Pushing current state.");
    history.emplace_back(*this);
}

state state::pop() {
    if (!history.empty()) {
        auto first = history.front();
        history.pop_front();
        return first;
    } else {
        throw std::length_error("History is empty. So nothing can be poped.");
    }
}

state& state::operator=(const state& other) {
    player = other.player;
    enemies = other.enemies;
    projectiles = other.projectiles;
    return *this;
}

std::list<state> state::history;