36 lines
746 B
C++
36 lines
746 B
C++
#pragma once
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class Action
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{
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public:
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virtual void run() = 0;
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virtual void undo() = 0;
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virtual size_t memory() = 0;
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virtual ~Action(){};
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};
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class ActionManager
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{
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public:
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static ActionManager I;
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std::stack<std::unique_ptr<Action>> m_actions;
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size_t m_memory = 0;
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static void add(Action* action)
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{
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I.m_actions.emplace(action);
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I.m_memory += action->memory();
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LOG("History: %.2f KB", I.m_memory / 1024.f);
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}
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static void undo()
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{
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I.m_actions.top()->undo();
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I.m_memory -= I.m_actions.top()->memory();
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I.m_actions.pop();
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LOG("History: %.2f KB", I.m_memory / 1024.f);
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}
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static bool empty()
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{
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return I.m_actions.empty();
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}
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};
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