From 16f7789a5278d55b7befc10a489cb8bbfbe17fd3 Mon Sep 17 00:00:00 2001
From: Vladyslav Baranovskyi <int17ist@gmail.com>
Date: Fri, 7 Jun 2024 16:09:11 +0300
Subject: [PATCH] SequenceAnimationController class

---
 .../Scene/SequenceAnimationController.cpp     | 78 +++++++++++++++++++
 .../Scene/SequenceAnimationController.hpp     | 45 +++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 openVulkanoCpp/Scene/SequenceAnimationController.cpp
 create mode 100644 openVulkanoCpp/Scene/SequenceAnimationController.hpp

diff --git a/openVulkanoCpp/Scene/SequenceAnimationController.cpp b/openVulkanoCpp/Scene/SequenceAnimationController.cpp
new file mode 100644
index 0000000..3f0c76f
--- /dev/null
+++ b/openVulkanoCpp/Scene/SequenceAnimationController.cpp
@@ -0,0 +1,78 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "Scene/SequenceAnimationController.hpp"
+
+namespace OpenVulkano::Scene
+{
+	SequenceAnimationController::SequenceAnimationController()
+	{
+		// m_animationController.m_completionEvent += EventHandler(this, &SequenceAnimationController::OnCurrentFrameFinished); 
+		m_completionEvent += EventHandler(this, &SequenceAnimationController::OnCurrentFrameFinished);
+	}
+
+	void SequenceAnimationController::AdvanceToNextStep()
+	{
+		if(m_steps.empty())
+			return;
+
+		if(m_currentStep < m_steps.size() - 1)
+		{
+			++m_currentStep;
+			SetPoses(GetTargetPose(), m_steps[m_currentStep].first);
+			SetDuration(m_steps[m_currentStep-1].second);
+			SimpleAnimationController::Reset();
+		}
+		else
+		{
+			if(m_loop)
+			{
+				m_currentStep = 0;
+				SetPoses(GetTargetPose(), m_steps[m_currentStep].first);
+				// We don't set the duration because transition from the last step to the first
+				// requires to use duration of the last step
+				SimpleAnimationController::Reset();
+			}
+			else
+			{
+				m_sequenceCompletionEvent.NotifyAll(this);
+			}
+		}
+	}
+
+	void SequenceAnimationController::Tick()
+	{
+		SimpleAnimationController::Tick();
+	}
+	
+	void SequenceAnimationController::Restart()
+	{
+		m_currentStep = 0;
+		if(!m_steps.empty())
+		{
+			SetPoses(GetTargetPose(), m_steps[m_currentStep].first);
+			SetDuration(m_steps.back().second);
+		}
+		SimpleAnimationController::Reset();
+	}
+
+	void SequenceAnimationController::AddAnimationStep(const Math::PoseF &pose, double duration)
+	{
+		m_steps.emplace_back(pose, duration);
+		if(m_steps.size() == 2)
+		{
+			m_currentStep = 1;
+			SetPoses(m_steps[0].first, m_steps[1].first);
+			SetDuration(m_steps[0].second);
+			Reset();
+		}
+	}
+
+	void SequenceAnimationController::OnCurrentFrameFinished(SimpleAnimationController *animationController)
+	{
+		AdvanceToNextStep();
+	}
+}
\ No newline at end of file
diff --git a/openVulkanoCpp/Scene/SequenceAnimationController.hpp b/openVulkanoCpp/Scene/SequenceAnimationController.hpp
new file mode 100644
index 0000000..0d711eb
--- /dev/null
+++ b/openVulkanoCpp/Scene/SequenceAnimationController.hpp
@@ -0,0 +1,45 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "Scene/SimpleAnimationController.hpp"
+#include "Base/Event.hpp"
+#include "Base/ITickable.hpp"
+#include "Math/Math.hpp"
+#include "Math/Pose.hpp"
+
+#include <vector>
+#include <utility>
+
+namespace OpenVulkano::Scene
+{
+	class SequenceAnimationController : public SimpleAnimationController 
+	{
+		using PoseDurationPair = std::pair<Math::PoseF, double>;
+
+		std::vector<PoseDurationPair> m_steps;
+		int m_currentStep = 0;
+		bool m_loop = false;
+
+		void AdvanceToNextStep();
+
+	public:
+		SequenceAnimationController();
+
+		Event<SequenceAnimationController *> m_sequenceCompletionEvent;
+
+		void EnableLoop(bool value) { m_loop = value; }
+
+		void Restart();
+		void AddAnimationStep(const Math::PoseF &pose, double duration);
+		bool IsFinished() { if(m_loop) return false; return m_currentStep >= m_steps.size(); }
+
+		void OnCurrentFrameFinished(SimpleAnimationController *animationController);
+
+		void Tick() override;
+	};
+}
\ No newline at end of file