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Moving to Sandbox

Posted on In
1.6k 3 mins.

引言

上次我们创建了一个正交相机类，今天我们需要将大量的代码移动到实际的沙盒程序中。

重构沙盒与应用

由于演示需要应用类已经变得非常臃肿了，让我们把冗余代码放到沙盒类中。由于修改较多，请参考 Moved sandbox code to Sandbox 修改。

相机移动

Sandbox.cpp 中的 OnUpdate() 函数定义相机移动方法：

void OnUpdate() override
{
	// IFN_INFO("ExampleLayer::Update");
	if (Infinite::Input::IsKeyPressed(IFN_KEY_LEFT))
		m_CameraPosition.x -= m_CameraMoveSpeed;
	else if (Infinite::Input::IsKeyPressed(IFN_KEY_RIGHT))
		m_CameraPosition.x += m_CameraMoveSpeed;

	if (Infinite::Input::IsKeyPressed(IFN_KEY_DOWN))
		m_CameraPosition.y -= m_CameraMoveSpeed;
	else if (Infinite::Input::IsKeyPressed(IFN_KEY_UP))
		m_CameraPosition.y += m_CameraMoveSpeed;

	if (Infinite::Input::IsKeyPressed(IFN_KEY_A))
		m_CameraRotation += m_CameraRotationSpeed;
	else if (Infinite::Input::IsKeyPressed(IFN_KEY_D))
		m_CameraRotation -= m_CameraRotationSpeed;


	Infinite::RenderCommand::SetClearColor({ 0.1f, 0.1f, 0.1f, 1 });
	Infinite::RenderCommand::Clear();

	m_Camera.SetPosition(m_CameraPosition);
	m_Camera.SetRotation(m_CameraRotation);

	Infinite::Renderer::BeginScene(m_Camera);

	Infinite::Renderer::Submit(m_BlueShader, m_SquareVertexArray);
	Infinite::Renderer::Submit(m_Shader, m_VertexArray);

	Infinite::Renderer::EndScene();

	if (Infinite::Input::IsKeyPressed(IFN_KEY_TAB))
		IFN_INFO("Tab key is pressed (poll)!");
}

在私有变量这里定义相机的位置、角度以及两者的移动速度：

private:

	std::shared_ptr<Infinite::Shader> m_Shader;
	std::shared_ptr<Infinite::VertexArray> m_VertexArray;

	std::shared_ptr<Infinite::Shader> m_BlueShader;
	std::shared_ptr<Infinite::VertexArray> m_SquareVertexArray;

	Infinite::OrthographicCamera m_Camera;
	glm::vec3 m_CameraPosition;
	float m_CameraRotation = 0.0f;
	float m_CameraMoveSpeed = 0.1f;
	float m_CameraRotationSpeed = 0.1f;
};

调试

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