#include "applicationclass.h"

ApplicationClass::ApplicationClass()
{
	m_Direct3D = 0;
	m_Camera = 0; 
	m_MultiTextureShader = 0;
	m_Model = 0;
	m_LightShader = 0;
	m_Light = 0;
	m_TextureShader = 0;
	m_Bitmap = 0;
	m_Sprite = 0;
	m_Timer = 0;
}


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


ApplicationClass::~ApplicationClass()
{
}


bool ApplicationClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
{
	char modelFilename[128];
	char textureFilename1[128], textureFilename2[128];
	char bitmapFilename[128];
	char spriteFilename[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, -10.0f);
	m_Camera->SetRotation(0.0f, 0.0f, 0.0f);

	// Create and initialize the texture shader object.
	m_TextureShader = new TextureShaderClass;

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

	// Set the sprite info file we will be using.
	strcpy_s(spriteFilename, "sprite_data_01.txt");

	// Create and initialize the sprite object.
	m_Sprite = new SpriteClass;

	result = m_Sprite->Initialize(m_Direct3D->GetDevice(), m_Direct3D->GetDeviceContext(), screenWidth, screenHeight, spriteFilename, 50, 50);
	if (!result)
	{
		return false;
	}

	// Create and initialize the timer object.
	m_Timer = new TimerClass;

	result = m_Timer->Initialize();
	if (!result)
	{
		return false;
	}

	// Set the file name of the bitmap file.
	strcpy_s(bitmapFilename, "stone01.tga");

	// Create and initialize the bitmap object.
	m_Bitmap = new BitmapClass;

	result = m_Bitmap->Initialize(m_Direct3D->GetDevice(), m_Direct3D->GetDeviceContext(), screenWidth, screenHeight, bitmapFilename, 50, 50);
	if (!result)
	{
		return false;
	}

	// 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 timer object.
	if (m_Timer)
	{
		delete m_Timer;
		m_Timer = 0;
	}

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

	// 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 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 bitmap object.
		if (m_Bitmap)
		{
			m_Bitmap->Shutdown();
			delete m_Bitmap;
			m_Bitmap = 0;
		}

		// Release the texture shader object.
		if (m_TextureShader)
		{
			m_TextureShader->Shutdown();
			delete m_TextureShader;
			m_TextureShader = 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()
{
	float frameTime;
	static float rotation = 0.0f;
	static float x = 2.f;
	static float y = 0.f;
	static float z = 0.f;
	bool result;

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

	// Update the x position variable each frame.
	x -= 0.0174532925f * 0.54672f;

	y -= 0.0174532925f * 0.8972f;

	// Update the z position variable each frame.
	z -= 0.0174532925f * 0.8972f;


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

	// Update the system stats.
	m_Timer->Frame();

	// Get the current frame time.
	frameTime = m_Timer->GetTime();

	// Update the sprite object using the frame time.
	m_Sprite->Update(frameTime);

	return true;
}


bool ApplicationClass::Render(float rotation, float x, float y, float z)
{
	XMMATRIX worldMatrix, viewMatrix, orthoMatrix, projectionMatrix, rotateMatrix, translateMatrix, scaleMatrix, srMatrix;
	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);
	m_Direct3D->GetOrthoMatrix(orthoMatrix);

	// Turn off the Z buffer to begin all 2D rendering.
	m_Direct3D->TurnZBufferOff();

	// Put the sprite vertex and index buffers on the graphics pipeline to prepare them for drawing.
	result = m_Sprite->Render(m_Direct3D->GetDeviceContext());
	if (!result)
	{
		return false;
	}

	// Render the sprite with the texture shader.
	result = m_TextureShader->Render(m_Direct3D->GetDeviceContext(), m_Sprite->GetIndexCount(), worldMatrix, viewMatrix, orthoMatrix, m_Sprite->GetTexture());
	if (!result)
	{
		return false;
	}

	// Put the bitmap vertex and index buffers on the graphics pipeline to prepare them for drawing.
	result = m_Bitmap->Render(m_Direct3D->GetDeviceContext());
	if (!result)
	{
		return false;
	}

	m_Bitmap->SetRenderLocation(1200, 50);

	// Render the bitmap with the texture shader.
	result = m_TextureShader->Render(m_Direct3D->GetDeviceContext(), m_Bitmap->GetIndexCount(), worldMatrix, viewMatrix, orthoMatrix, m_Bitmap->GetTexture());
	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));

	scaleMatrix = XMMatrixScaling(0.5f, 0.5f, 0.5f);  // Build the scaling matrix.
	rotateMatrix = XMMatrixRotationY(rotation);  // Build the rotation matrix.
	translateMatrix = XMMatrixTranslation(x, y, z);  // Build the translation matrix.

	// Multiply the scale, rotation, and translation matrices together to create the final world transformation matrix.
	srMatrix = XMMatrixMultiply(scaleMatrix, rotateMatrix);
	worldMatrix = XMMatrixMultiply(srMatrix, translateMatrix);

	// 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;
	}

	scaleMatrix = XMMatrixScaling(2.0f, 2.0f, 2.0f);  // Build the scaling matrix.
	rotateMatrix = XMMatrixRotationY(-rotation);  // Build the rotation matrix.
	translateMatrix = XMMatrixTranslation(-x, -y, -z);  // Build the translation matrix.

	// Multiply the scale, rotation, and translation matrices together to create the final world transformation matrix.
	srMatrix = XMMatrixMultiply(scaleMatrix, rotateMatrix);
	worldMatrix = XMMatrixMultiply(srMatrix, translateMatrix);

	// Put the model vertex and index buffers on the graphics pipeline to prepare them for drawing.
	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;
	}

	// Turn the Z buffer back on now that all 2D rendering has completed.
	m_Direct3D->TurnZBufferOn();

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

	return true;
}

