Magic_Game/core/actions/FiniteTimeAction.cpp

// Copyright (c) 2016-2018 Easy2D - Nomango
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "..\e2daction.h"

namespace easy2d
{
	FiniteTimeAction::FiniteTimeAction(float duration)
		: delta_(0)
		, duration_(std::max(duration, 0.f))
	{
	}

	void FiniteTimeAction::Reset()
	{
		Action::Reset();
		delta_ = 0;
	}

	void FiniteTimeAction::Init()
	{
		Action::Init();
	}

	void FiniteTimeAction::Update()
	{
		Action::Update();

		if (duration_ == 0)
		{
			delta_ = 1;
			this->Stop();
		}
		else
		{
			delta_ = std::min((Time::Now() - started_).Seconds() / duration_, 1.f);

			if (delta_ >= 1)
			{
				this->Stop();
			}
		}
	}

	void FiniteTimeAction::ResetTime()
	{
		Action::ResetTime();
		started_ = Time::Now() - Duration::Second * (delta_ * duration_);
	}
}