signal.hpp

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#pragma once
#include <functional>
#include <algorithm>
#include <vector>
 
// btw, this signal class is genuinely so simple that it doesn't need to have a c++ file, i do have a signal.cpp file but it's there for "futureproofing" lmao
 
template<typename... Args>
class Signal {
public:
    bool fired = false;
 
    void fire(Args... args) {
        if(fired) return;
        fired = true;
        for (const auto& callback : callbacks) {
            callback(args...);
        }
    }
 
    void reset() {
        fired = false;
    }
 
    void connect(std::function<void(Args...)> cb) {
        callbacks.push_back(cb);
    }
 
    void disconnect(std::function<void(Args...)> cb) {
        callbacks.erase(std::remove(callbacks.begin(), callbacks.end(), cb), callbacks.end());
    }
 
private:
    std::vector<std::function<void(Args...)>> callbacks;
};