// WinApiLAB2.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "WinApiLAB2.h"

#define w_width 400
#define w_height 600
#define MAX_LOADSTRING 100
const int ScreenX = (GetSystemMetrics(SM_CXSCREEN) - w_width) / 2; //defines positions such that window will be in the middle
const int ScreenY = (GetSystemMetrics(SM_CYSCREEN) - w_height) / 2;
// Global Variables:
HINSTANCE hInst;                                // current instance
WCHAR szTitle[MAX_LOADSTRING];                  // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];            // the main window class name
HWND hMainWnd;
HWND hBlockWnd;
void UpdateBlock();
struct Block {
	HWND BlockWnd;
	int size = 32;
	int x = 180;
	int y = 600;
};
Block block;
void Jumping();
bool jump = false;
// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
ATOM                MyRegisterBlockClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK    WndProcBlock(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
	_In_opt_ HINSTANCE hPrevInstance,
	_In_ LPWSTR    lpCmdLine,
	_In_ int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);


	// TODO: Place code here.

	// Initialize global strings
	LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadStringW(hInstance, IDC_WINAPILAB2, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);
	MyRegisterBlockClass(hInstance);
	// Perform application initialization:
	if (!InitInstance(hInstance, nCmdShow))
	{
		return FALSE;
	}

	HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINAPILAB2));

	MSG msg;

	// Main message loop:
	while (GetMessage(&msg, nullptr, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int)msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEXW 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 = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINAPILAB2));
	wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
	HBRUSH hb = CreateSolidBrush(RGB(0, 128, 255));
	wcex.hbrBackground = hb;
	wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_WINAPILAB2);
	wcex.lpszClassName = szWindowClass;
	wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassExW(&wcex);
}
ATOM MyRegisterBlockClass(HINSTANCE hInstance)
{
	WNDCLASSEXW 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 = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINAPILAB2));
	wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
	HBRUSH hb = CreateSolidBrush(RGB(255, 0, 0));
	wcex.hbrBackground = hb;
	wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_WINAPILAB2);
	wcex.lpszClassName = L"BlockWnd";
	wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassExW(&wcex);
}
//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	hInst = hInstance; // Store instance handle in our global variable

	hMainWnd = CreateWindowW(szWindowClass, L"IcyTower", WS_OVERLAPPEDWINDOW ^ WS_THICKFRAME ^ WS_MAXIMIZEBOX | WS_CLIPCHILDREN, //WS_OVERLAPPED | WS_MINIMIZEBOX | WS_SYSMENU,
		ScreenX, ScreenY, w_width, w_height, nullptr, nullptr, hInstance, nullptr);
	SetWindowPos(hMainWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
	if (!hMainWnd)
	{
		return FALSE;
	}
	ShowWindow(hMainWnd, nCmdShow);
	UpdateWindow(hMainWnd);
	hBlockWnd = CreateWindow(L"BlockWnd", L"Block",
		WS_CHILD,
		180, 510, 32,32,
		hMainWnd, NULL, hInstance, NULL);
	if (!hBlockWnd)
	{
		return FALSE;
	}
	SetWindowRgn(hBlockWnd, CreateRectRgn(0, 0, block.size, block.size), true);

	ShowWindow(hBlockWnd, nCmdShow);
	UpdateWindow(hBlockWnd);
	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE: Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_COMMAND:
	{
		int wmId = LOWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
	}
	break;
	case WM_SETFOCUS: {SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) |
		WS_EX_LAYERED);
		// Make this window 50% alpha
		SetLayeredWindowAttributes(hWnd, 0, (500 * 50) / 100, LWA_ALPHA); }break;
	case WM_KILLFOCUS: { SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) |
		WS_EX_LAYERED);
		// Make this window 50% alpha
		SetLayeredWindowAttributes(hWnd, 0, (255 * 50) / 100, LWA_ALPHA); }break;
	case WM_PAINT:
	{
		PAINTSTRUCT ps;
		HDC hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code that uses hdc here...
		EndPaint(hWnd, &ps);
	}
	break;
	case WM_KEYDOWN: {
		if (wParam == 65) // A
		{
			block.x -= 20;
			UpdateBlock();
		}

		if (wParam == 87) //W
		{
			jump = true;

		}
		if (wParam == 68) // D
		{
			block.x += 20;
			UpdateBlock();
		}
	}break;
	case WM_CREATE: {
		SetTimer(hMainWnd, NULL, 10, NULL);
	}break;
	case WM_TIMER: {
		Jumping();
	}break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}
LRESULT CALLBACK WndProcBlock(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	RECT rc;
	static int X, Y;
	switch (message)
	{

	case WM_PAINT:
	{
		PAINTSTRUCT ps;
		HDC hdc = BeginPaint(hWnd, &ps);


		EndPaint(hWnd, &ps);
	}
	break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
	return 0;
}

void UpdateBlock() {
	if (block.x < 0)
		block.x = 0;
	if (block.x > 400 - 15- block.size)
		block.x = 400 - 15 - block.size;
	if (block.y < 0)
		block.y = 0;
	if (block.y > 542 - block.size)
		block.y = 542 - block.size;

	MoveWindow(hBlockWnd, block.x, block.y, block.size, block.size, true);
	UpdateWindow(hBlockWnd);
	SetLayeredWindowAttributes(hMainWnd, 0, (255 * 100) / 100, LWA_ALPHA);
}
void Jumping() {
	if (jump == true) {
		if (block.y == 510)
		{
			block.y -= 100;
			UpdateBlock();
			jump = false;
		}
		if (block.y != 510) {
			block.y += 5;
			UpdateBlock();
		}
	}
}