// CLASSOBJ.cpp : 定義應(yīng)用程序的入口點(diǎn)。
//

#include "stdafx.h"
#include "CLASSOBJ.h"
#include "obj.h"
#include "PlaneObj.h"
#include "BulletObj.h"
#include "EnemyObj.h"
#include "Scene.h"
#include "BgObj.h"
#include "dlgproc.h"
#define MAX_LOADSTRING 100

// 全局變量:
Scene scene;
PlaneObj Plane;
Obj Flash;
BgObj Bg;
const int MaxBullet=10;
int MaxEnemy=10;
BulletObj Bullet[MaxBullet];
EnemyObj Enemy[60];
int elapse;
int CurrentBullet=0;
HIMAGELIST sBullet,mBullet,lBullet,imgEnemy,imgBomb;
HINSTANCE hInst;
int BulletLifeTime;
// 當(dāng)前實(shí)例
TCHAR szTitle[MAX_LOADSTRING];					// 標(biāo)題欄文本
TCHAR szWindowClass[MAX_LOADSTRING];			// 主窗口類名

// 此代碼模塊中包含的函數(shù)的前向聲明:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	// TODO: 在此放置代碼。
	MSG msg;
	HACCEL hAccelTable;

	// 初始化全局字符串
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_CLASSOBJ, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// 執(zhí)行應(yīng)用程序初始化:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_CLASSOBJ);

	// 主消息循環(huán):
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}



//
//  函數(shù): MyRegisterClass()
//
//  目的: 注冊(cè)窗口類。
//
//  注釋: 
//
//    僅當(dāng)希望在已添加到 Windows 95 的
//    “RegisterClassEx”函數(shù)之前此代碼與 Win32 系統(tǒng)兼容時(shí)，
//    才需要此函數(shù)及其用法。調(diào)用此函數(shù)
//    十分重要，這樣應(yīng)用程序就可以獲得關(guān)聯(lián)的
//   “格式正確的”小圖標(biāo)。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_CLASSOBJ);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(GetStockObject(BLACK_BRUSH));
	wcex.lpszMenuName	= (LPCTSTR)IDC_CLASSOBJ;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

	return RegisterClassEx(&wcex);
}

//
//   函數(shù): InitInstance(HANDLE, int)
//
//   目的: 保存實(shí)例句柄并創(chuàng)建主窗口
//
//   注釋: 
//
//        在此函數(shù)中，我們?cè)谌肿兞恐斜４鎸?shí)例句柄并
//        創(chuàng)建和顯示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // 將實(shí)例句柄存儲(chǔ)在全局變量中

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, 640, 480, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}


LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	int i,j;
	PAINTSTRUCT ps;
	HDC hdc;
	RECT rect;
//	TCHAR tempstr[100];
	switch (message) 
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam); 
		wmEvent = HIWORD(wParam); 
		// 分析菜單選擇:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_CREATE:
		{
		int a=GetCurrentThreadId();
			char buf[200];
			wsprintf(buf,"Thread id:%d ",a);
			MessageBox(hWnd,buf,buf,MB_OK);
		}
		//Display the dialogbox to setting
		DialogBox(hInst,MAKEINTRESOURCE(IDD_DIALOG1),hWnd,DialogProc);
		//normal init Objs
		Plane.Create(TEXT("plane.bmp"),64,5,RGB(255,0,255));
		Flash.Create(TEXT("flash.bmp"),64,8,RGB(255,0,255));
		Bg.Create(TEXT("bg.bmp"),640,2);
		Bg.SetPosition(500,500);
		Bg.SetHide(FALSE);
		Flash.SetHide(TRUE);
		Plane.SetFrame(2);
		GetClientRect(hWnd,&rect);
		Plane.SetBound(rect);
		//3 bullets is shared by 10 BulletObjs
		sBullet=ImageList_LoadImage(NULL,TEXT("sbullet.bmp"),24,1,RGB(255,0,255),IMAGE_BITMAP,LR_LOADFROMFILE);
		mBullet=ImageList_LoadImage(NULL,TEXT("mbullet.bmp"),48 ,1,RGB(255,0,255),IMAGE_BITMAP,LR_LOADFROMFILE);
		lBullet=ImageList_LoadImage(NULL,TEXT("lbullet.bmp"),128 ,1,RGB(255,0,255),IMAGE_BITMAP,LR_LOADFROMFILE);
		//also shared by EnemyObjs
		imgEnemy  =ImageList_LoadImage(NULL,TEXT("Enemy.bmp"),64 ,7,RGB(255,0,255),IMAGE_BITMAP,LR_LOADFROMFILE);
		imgBomb  =ImageList_LoadImage(NULL,TEXT("bomb.bmp"),64 ,4,RGB(255,0,255),IMAGE_BITMAP,LR_LOADFROMFILE);
		for (i=0;i<MaxEnemy;i++)
		{
			Enemy[i].SetBound(rect);
			Enemy[i].Init(imgEnemy,imgBomb);//Special init.must not call member Create(...)
			Enemy[i].Kill();//just for revive
		}
		for (i=0;i<MaxBullet;i++)
		{
			Bullet[i].SetImgList(mBullet);//Another special init
			Bullet[i].SetBound(rect);
		}
		//Add Objs to Scene
		scene.Create(rect.right-rect.left,rect.bottom-rect.top);
		scene.Add(&Bg);
		scene.Add(&Plane);
		scene.Add(&Flash);
		for (i=0;i<MaxBullet;i++)
			scene.Add(&Bullet[i]);

		for (i=0;i<MaxEnemy;i++)
			scene.Add(&Enemy[i]);
		//start timer
		SetTimer(hWnd,1,50,NULL);
		break;
	case WM_ERASEBKGND:
		//Bg.Render((HDC)wParam);
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		scene.Render(hdc);
		EndPaint(hWnd, &ps);
		break;
	case WM_KEYDOWN:
		if (HIWORD(lParam)<16000)
		{
			switch(wParam)
			{
			case VK_UP:
			case VK_DOWN:
			case VK_LEFT:
			case VK_RIGHT:
                Plane.KeyEvent(wParam,TRUE);
				break;
			case 'Z':
				Flash.SetHide(FALSE);//show flash
				BulletLifeTime=0;//BulletLifeTime++; is in WM_TIMER
				break;
			default:
				break;
			}
		}
		InvalidateRect(hWnd,NULL,TRUE); 
		break;
	case WM_KEYUP:
		switch(wParam)
		{
		case VK_UP:
		case VK_DOWN:
		case VK_LEFT:
		case VK_RIGHT:
			Plane.KeyEvent(wParam,FALSE);
			//check if any other key is still pushed
			if (GetKeyState(VK_UP)   ==-128) Plane.KeyEvent(VK_UP,TRUE);
			if (GetKeyState(VK_DOWN) ==-128) Plane.KeyEvent(VK_DOWN,TRUE);
			if (GetKeyState(VK_LEFT) ==-128) Plane.KeyEvent(VK_LEFT,TRUE);
			if (GetKeyState(VK_RIGHT)==-128) Plane.KeyEvent(VK_RIGHT,TRUE);
			break;
		case 'Z':
			Flash.SetHide(TRUE);//hide flash
			//check how long 'Z' pushed
			if (BulletLifeTime>15)
				Bullet[CurrentBullet].SetImgList(lBullet);
			else if (BulletLifeTime>6)
				Bullet[CurrentBullet].SetImgList(mBullet);
			else 
				Bullet[CurrentBullet].SetImgList(sBullet);
			Bullet[CurrentBullet].SetPosition(Plane.GetXPos()+60,Plane.GetYPos()+4);
			Bullet[CurrentBullet].SetXV(30);
			Bullet[CurrentBullet].SetHide(FALSE);
			CurrentBullet=(CurrentBullet+1)%MaxBullet;//choose a unused BulletObj(maybe unused)
			BulletLifeTime=0;
			break;
		}
		InvalidateRect(hWnd,NULL,TRUE); 
		break;
	case WM_TIMER:
		{
		//	int a=GetCurrentThreadId();
		//	char buf[200];
		//	wsprintf(buf,"Thread id:%d ",a);
		//	MessageBox(hWnd,buf,buf,MB_OK);
		}
		//check if a live enemy hit plane,then kill plane and enemy
		{
			static bool IsKilled=FALSE;
			static int theI;
			for (i=0;i<MaxEnemy&&!IsKilled;i++)
			{
				
				if (!Enemy[i].IsHide() && Enemy[i].GetState()==0 && Plane.IsHitObj(Enemy[i]))
				{
					Plane.SetHide(TRUE);
					Enemy[i].SetPosition(Plane.GetXPos(),Plane.GetYPos());
					Enemy[i].Kill();
					theI=i;
					IsKilled=TRUE;
					break;
				}
			}
			if (IsKilled && Enemy[theI].GetState()==0)//if Plane's bomb end,exit game
			{
				KillTimer(hWnd,1);
				IsKilled=FALSE;
				MessageBox(hWnd,TEXT("Game Over"),TEXT("GameOver"),MB_OK);
				PostQuitMessage(0);
				
				break;
			}
		}
		//move plane and enemy
		Plane.NextState();
		for (i=0;i<MaxEnemy;i++)
			Enemy[i].NextState();
		Flash.SetPosition(Plane.GetXPos()+60,Plane.GetYPos()+4);
		Bg.NextState();
		
		//check if a bullet hit a enemy ,then kill enemy
		for (i=0;i<MaxBullet;i++)
		{
			
				for (j=0;j<MaxEnemy;j++)
				{
					if (!Enemy[j].IsHide() && Enemy[j].GetState()==0)//choose live and visible enemy
					{
                        if (Enemy[j].IsHitObj(Bullet[i]) && !Bullet[i].IsHide())//choose visible bullet
						{
							Enemy[j].Kill();
							if (Bullet[i].GetImgList()!=lBullet) Bullet[i].SetHide(TRUE);
						}
					}
				}
				Bullet[i].NextState();//next position,whatever it's visible
		}
		BulletLifeTime++;//see above
		Flash.NextFrame();//do this whatever it's visible
		InvalidateRect(hWnd,NULL,TRUE);//repaint
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// “關(guān)于”框的消息處理程序。
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_INITDIALOG:
		return TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) 
		{
			EndDialog(hDlg, LOWORD(wParam));
			return TRUE;
		}
		break;
	}
	return FALSE;
}