#include "applicationclass.h"

ApplicationClass::ApplicationClass()
{
	m_Direct3D = 0;
	m_Camera = 0; 
	m_MultiTextureShader = 0;
	m_Model = 0;
	m_LightShader = 0;
	m_Light = 0;
}


ApplicationClass::ApplicationClass(const ApplicationClass& other)
{
}


ApplicationClass::~ApplicationClass()
{
}


bool ApplicationClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
{
	char modelFilename[128], textureFilename1[128], textureFilename2[128];
	bool result;


	// Create the Direct3D object.
	m_Direct3D = new D3DClass;
	if (!m_Direct3D)
	{
		return false;
	}

	// Initialize the Direct3D object.
	result = m_Direct3D->Initialize(screenWidth, screenHeight, VSYNC_ENABLED, hwnd, FULL_SCREEN, SCREEN_DEPTH, SCREEN_NEAR);
	if (!result)
	{
		MessageBox(hwnd, L"Could not initialize Direct3D.", L"Error", MB_OK);
		return false;
	}

	// Create the camera object.
	m_Camera = new CameraClass;
	if (!m_Camera)
	{
		return false;
	}

	// Set the initial position of the camera.
	m_Camera->SetPosition(0.0f, 0.0f, -5.0f);
	m_Camera->SetRotation(0.0f, 0.0f, 10.0f);

	// Create and initialize the multitexture shader object.
	m_MultiTextureShader = new MultiTextureShaderClass;

	result = m_MultiTextureShader->Initialize(m_Direct3D->GetDevice(), hwnd);
	if (!result)
	{
		MessageBox(hwnd, L"Could not initialize the multitexture shader object.", L"Error", MB_OK);
		return false;
	}

	// Set the file name of the model.
	strcpy_s(modelFilename, "cube.txt");

	// Set the file name of the textures.
	strcpy_s(textureFilename1, "stone01.tga");
	strcpy_s(textureFilename2, "moss01.tga");

	// Create and initialize the model object.
	m_Model = new ModelClass;

	result = m_Model->Initialize(m_Direct3D->GetDevice(), m_Direct3D->GetDeviceContext(), modelFilename, textureFilename1, textureFilename2);
	if (!result)
	{
		MessageBox(hwnd, L"Could not initialize the model object.", L"Error", MB_OK);
		return false;
	}


	// Create and initialize the light shader object.
	m_LightShader = new LightShaderClass;

	result = m_LightShader->Initialize(m_Direct3D->GetDevice(), hwnd);
	if (!result)
	{
		MessageBox(hwnd, L"Could not initialize the light shader object.", L"Error", MB_OK);
		return false;
	}
	// Create and initialize the light object.
	m_Light = new LightClass;

	m_Light->SetAmbientColor(0.15f, 0.15f, 0.15f, 1.0f);
	m_Light->SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);
	m_Light->SetDirection(1.0f, 0.0f, 0.0f);

	return true;
}


void ApplicationClass::Shutdown()
{
	// Release the light object.
	if (m_Light)
	{
		delete m_Light;
		m_Light = 0;
	}

	// Release the light shader object.
	if (m_LightShader)
	{
		m_LightShader->Shutdown();
		delete m_LightShader;
		m_LightShader = 0;
	}

	// Release the model object.
	if (m_Model)
	{
		m_Model->Shutdown();
		delete m_Model;
		m_Model = 0;
	}

	// Release the multitexture shader object.
	if (m_MultiTextureShader)
	{
		m_MultiTextureShader->Shutdown();
		delete m_MultiTextureShader;
		m_MultiTextureShader = 0;
	}

	// Release the camera object.
	if (m_Camera)
	{
		delete m_Camera;
		m_Camera = 0;
	}

	// Release the D3D object.
	if (m_Direct3D)
	{
		m_Direct3D->Shutdown();
		delete m_Direct3D;
		m_Direct3D = 0;
	}

	return;
}


bool ApplicationClass::Frame()
{
	static float rotation = 0.0f;
	bool result;


	// Update the rotation variable each frame.
	rotation -= 0.0174532925f * 0.1f;
	if (rotation < 0.0f)
	{
		rotation += 360.0f;
	}

	// Render the graphics scene.
	result = Render(rotation);
	if (!result)
	{
		return false;
	}

	return true;
}


bool ApplicationClass::Render(float rotation)
{
	XMMATRIX worldMatrix, viewMatrix, projectionMatrix;
	bool result;

	// Clear the buffers to begin the scene.
	m_Direct3D->BeginScene(0.0f, 0.0f, 0.0f, 1.0f);

	// Generate the view matrix based on the camera's position.
	m_Camera->Render();

	// Get the world, view, and projection matrices from the camera and d3d objects.
	m_Direct3D->GetWorldMatrix(worldMatrix);
	m_Camera->GetViewMatrix(viewMatrix);
	m_Direct3D->GetProjectionMatrix(projectionMatrix);
	// Rotate the world matrix by the rotation value so that the triangle will spin.
	worldMatrix = XMMatrixRotationY(rotation);

	// Render the model using the multitexture shader.
	m_Model->Render(m_Direct3D->GetDeviceContext());

	// Render the model using the light shader.
	result = m_LightShader->Render(m_Direct3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix, m_Model->GetTexture(0),
		m_Light->GetDirection(), m_Light->GetAmbientColor(), m_Light->GetDiffuseColor());
	if (!result)
	{
		return false;
	}

	// Render the model using the multitexture shader.
	result = m_MultiTextureShader->Render(m_Direct3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix,
		m_Model->GetTexture(0), m_Model->GetTexture(1));
	if (!result)
	{
		return false;
	}

	// Present the rendered scene to the screen.
	m_Direct3D->EndScene();

	return true;
}