47 lines
912 B
C++
47 lines
912 B
C++
#pragma once
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#include <string>
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#include <functional>
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#include <unordered_map>
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#include <vector>
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#include "Event.h"
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class EventDispatcher
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{
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public:
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using Delegate = std::function<void(const Event&)>;
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static EventDispatcher& GetInstance() {
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static EventDispatcher instance;
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return instance;
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}
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void Dispatch(const Event& evt)
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{
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const auto& name = evt.GetName();
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if (m_Handlers.find(name) == m_Handlers.end())
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{
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return;
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}
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for (const auto& handler : m_Handlers[name])
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{
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handler(evt);
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}
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}
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void Subscribe(const std::string& eventName, const Delegate handler)
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{
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m_Handlers[eventName].push_back(handler);
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}
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private:
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EventDispatcher() = default;
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virtual ~EventDispatcher() = default;
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EventDispatcher(const EventDispatcher&) = delete;
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EventDispatcher& operator=(const EventDispatcher&) = delete;
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private:
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std::unordered_map<std::string, std::vector<Delegate>> m_Handlers;
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}; |