//--------------------------------------------------------------------------------------
// File: TemplateMain.cpp
//
// BTH-D3D-Template
//
// Copyright (c) Stefan Petersson 2011. All rights reserved.
//--------------------------------------------------------------------------------------
#define NOMINMAX
#include <vld.h>
#include <Windows.h>
#include "DllInterfaces\GFXAPI.h"



//--------------------------------------------------------------------------------------
// Global Variables
//--------------------------------------------------------------------------------------
HINSTANCE				g_hInst					= NULL;  
HWND					g_hWnd					= NULL;
Oyster::Graphics::Model::Model* m				= NULL;
Oyster::Graphics::Model::Model* m2				= NULL;
Oyster::Graphics::Model::Model* m3				= NULL;
Oyster::Math::Float4x4 V;
Oyster::Math::Float4x4 P;


//--------------------------------------------------------------------------------------
// Forward declarations
//--------------------------------------------------------------------------------------
HRESULT             InitWindow( HINSTANCE hInstance, int nCmdShow );
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
HRESULT				Render(float deltaTime);
HRESULT				Update(float deltaTime);
HRESULT				InitDirect3D();




//--------------------------------------------------------------------------------------
// Entry point to the program. Initializes everything and goes into a message processing 
// loop. Idle time is used to render the scene.
//--------------------------------------------------------------------------------------
int WINAPI wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow )
{

	BOOL b = SetDllDirectoryW(L"..\\DLL");

	if( FAILED( InitWindow( hInstance, nCmdShow ) ) )
		return 0;

	if( FAILED( InitDirect3D() ) )
		return 0;

	__int64 cntsPerSec = 0;
	QueryPerformanceFrequency((LARGE_INTEGER*)&cntsPerSec);
	float secsPerCnt = 1.0f / (float)cntsPerSec;

	__int64 prevTimeStamp = 0;
	QueryPerformanceCounter((LARGE_INTEGER*)&prevTimeStamp);

	std::string fps = "FPS:";
	char count[100];
	// Main message loop
	MSG msg = {0};
	float fpsCounter = 0;
	while(WM_QUIT != msg.message)
	{
		if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE) )
		{
			TranslateMessage( &msg );
			DispatchMessage( &msg );
		}
		else
		{
			__int64 currTimeStamp = 0;
			QueryPerformanceCounter((LARGE_INTEGER*)&currTimeStamp);
			float dt = (currTimeStamp - prevTimeStamp) * secsPerCnt;

			//render
			Update(dt);
			Render(dt);
			fpsCounter += dt;
			if(fpsCounter>0.1f)
			{
				sprintf_s(count, "%f",1/dt);
				SetWindowTextA(g_hWnd, (fps + count).c_str());
				fpsCounter = 0;
			}
			prevTimeStamp = currTimeStamp;
		}
	}

	Oyster::Graphics::API::DeleteModel(m);
	Oyster::Graphics::API::DeleteModel(m2);
	Oyster::Graphics::API::DeleteModel(m3);
	Oyster::Graphics::API::Clean();
	return (int) msg.wParam;
}

//--------------------------------------------------------------------------------------
// Register class and create window
//--------------------------------------------------------------------------------------
HRESULT InitWindow( HINSTANCE hInstance, int nCmdShow )
{
	// Register class
	WNDCLASSEX wcex;
	wcex.cbSize = sizeof(WNDCLASSEX); 
	wcex.style          = CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc    = WndProc;
	wcex.cbClsExtra     = 0;
	wcex.cbWndExtra     = 0;
	wcex.hInstance      = hInstance;
	wcex.hIcon          = 0;
	wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName   = NULL;
	wcex.lpszClassName  = L"BTH_D3D_Template";
	wcex.hIconSm        = 0;
	if( !RegisterClassEx(&wcex) )
		return E_FAIL;

	// Adjust and create window
	g_hInst = hInstance; 
	RECT rc = { 0, 0, 1280, 720 };
	AdjustWindowRect( &rc, WS_OVERLAPPEDWINDOW, FALSE );
	
	if(!(g_hWnd = CreateWindow(
							L"BTH_D3D_Template",
							L"BTH - Direct3D 11.0 Template",
							WS_OVERLAPPEDWINDOW,
							CW_USEDEFAULT,
							CW_USEDEFAULT,
							rc.right - rc.left,
							rc.bottom - rc.top,
							NULL,
							NULL,
							hInstance,
							NULL)))
	{
		return E_FAIL;
	}

	ShowWindow( g_hWnd, nCmdShow );

	return S_OK;
}



//--------------------------------------------------------------------------------------
// Create Direct3D device and swap chain
//--------------------------------------------------------------------------------------
HRESULT InitDirect3D()
{
	HRESULT hr = S_OK;;

	if(Oyster::Graphics::API::Init(g_hWnd,false,false, Oyster::Math::Float2( 1024, 768 )) == Oyster::Graphics::API::Fail)
	{
		return E_FAIL;
	}
	
	m =  Oyster::Graphics::API::CreateModel(L"untitled.dan");
	m2 = Oyster::Graphics::API::CreateModel(L"still.dan");
	m2->WorldMatrix = Oyster::Math3D::OrientationMatrix(Oyster::Math::Float3::null,Oyster::Math::Float3(0,5,0),Oyster::Math::Float3::null);
	m2->AnimationPlaying = 0;
	m2->AnimationTime = 0.0f;
	//m3 = Oyster::Graphics::API::CreateModel(L"box_2.dan");
	//m3->WorldMatrix = Oyster::Math3D::OrientationMatrix(Oyster::Math::Float3::null,Oyster::Math::Float3(0,5,0),Oyster::Math::Float3::null);
	

	P = Oyster::Math3D::ProjectionMatrix_Perspective(Oyster::Math::pi/2,1280.0f/720.0f,.1f,10000);
	Oyster::Graphics::API::SetProjection(P);

	V = Oyster::Math3D::OrientationMatrix_LookAtDirection(Oyster::Math::Float3(0,0,-1),Oyster::Math::Float3(0,1,0),Oyster::Math::Float3(0,200,500.4f));
	V = V.GetInverse();
	

	Oyster::Graphics::Definitions::Pointlight pl;
	pl.Color = Oyster::Math::Float3(1,1,1);
	pl.Bright = 1;
	pl.Pos = Oyster::Math::Float3(0,-20.0f,30.4f);
	pl.Radius = 90;

	Oyster::Graphics::API::AddLight(pl);


	return S_OK;
}
float angle = 0;
HRESULT Update(float deltaTime)
{

	angle += Oyster::Math::pi/16 * deltaTime;
	//m->WorldMatrix =  Oyster::Math3D::RotationMatrix_AxisY(angle) * Oyster::Math3D::RotationMatrix_AxisX(-Oyster::Math::pi/2);
	m2->WorldMatrix = Oyster::Math3D::OrientationMatrix(Oyster::Math::Float3(0,1,0)*-Oyster::Math::pi/2,Oyster::Math::Float3(0,-4,0),Oyster::Math::Float3::null);
	Oyster::Math::Matrix ma = Oyster::Math::Matrix::identity;
	ma *= 50;
	ma.m44 = 1;
	m2->WorldMatrix = m2->WorldMatrix *  ma;
	m2->AnimationTime += deltaTime * 0.5f;
	//m3->WorldMatrix =  Oyster::Math3D::OrientationMatrix(Oyster::Math::Float3(1,0,0)*-0,Oyster::Math::Float3(3,4,-1*angle),Oyster::Math::Float3::null);
	return S_OK;
}

HRESULT Render(float deltaTime)
{
	Oyster::Graphics::API::SetView(V);
	Oyster::Graphics::API::NewFrame();

	//Oyster::Graphics::API::RenderModel(*m);
	Oyster::Graphics::API::RenderModel(*m2);
	//Oyster::Graphics::API::RenderModel(*m3);

	Oyster::Graphics::API::EndFrame();

	return S_OK;
}

//--------------------------------------------------------------------------------------
// Called every time the application receives a message
//--------------------------------------------------------------------------------------
LRESULT CALLBACK WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message) 
	{
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		EndPaint(hWnd, &ps);
		break;

	case WM_DESTROY:
		PostQuitMessage(0);
		break;

	case WM_KEYDOWN:

		switch(wParam)
		{
			case VK_ESCAPE:
				PostQuitMessage(0);
				break;
			//R
			case 0x52:
#ifdef _DEBUG
				Oyster::Graphics::API::ReloadShaders();
#endif
				break;
		}
		break;

	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}

	return 0;
}