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/***************************************************************************** IsoHex7_2.cpp Ernest S. Pazera 24MAY2000 Start a WIN32 Application Workspace, add in this file Needs ddraw.lib and dxguid.lib Needs GDICanvas.h/cpp Needs DDFuncs.h/cpp *****************************************************************************/ ////////////////////////////////////////////////////////////////////////////// //INCLUDES ////////////////////////////////////////////////////////////////////////////// #define WIN32_LEAN_AND_MEAN #include <windows.h> #include "GDICanvas.h" #include "ddraw.h" #include "DDFuncs.h" ////////////////////////////////////////////////////////////////////////////// //DEFINES ////////////////////////////////////////////////////////////////////////////// //name for our window class #define WINDOWCLASS "ISOHEX7" //title of the application #define WINDOWTITLE "IsoHex 7-2" ////////////////////////////////////////////////////////////////////////////// //PROTOTYPES ////////////////////////////////////////////////////////////////////////////// bool Prog_Init();//game data initalizer void Prog_Loop();//main game loop void Prog_Done();//game clean up //enumeration functions HRESULT WINAPI EnumModesCallbackCount(LPDDSURFACEDESC2 lpDDSurfaceDesc, LPVOID lpContext); HRESULT WINAPI EnumModesCallbackList(LPDDSURFACEDESC2 lpDDSurfaceDesc,LPVOID lpContext); ////////////////////////////////////////////////////////////////////////////// //GLOBALS ////////////////////////////////////////////////////////////////////////////// HINSTANCE hInstMain=NULL;//main application handle HWND hWndMain=NULL;//handle to our main window //IDirectDraw7 Pointer LPDIRECTDRAW7 lpdd=NULL; //gdicanvas CGDICanvas gdicBall; //surfaces LPDIRECTDRAWSURFACE7 lpddsPrime=NULL; LPDIRECTDRAWSURFACE7 lpddsBack=NULL; LPDIRECTDRAWSURFACE7 lpddsBall=NULL; //clipper LPDIRECTDRAWCLIPPER lpddclip=NULL; //size of the display DWORD dwDisplayWidth=0; DWORD dwDisplayHeight=0; //position of the ball POINT ptBallPosition[2]; POINT ptLastPosition[2]; //velocity of the ball POINT ptBallVelocity[2]; //screen coordinate corresponding to the upper left of the client area POINT ptPrimeBlt; //paused mode bool bPaused=false; ////////////////////////////////////////////////////////////////////////////// //WINDOWPROC ////////////////////////////////////////////////////////////////////////////// LRESULT CALLBACK TheWindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam) { //which message did we get? switch(uMsg) { case WM_MOVE: { //set primeblit point to client 0,0 ptPrimeBlt.x=0; ptPrimeBlt.y=0; //convert to screen coordinates ClientToScreen(hwnd,&ptPrimeBlt); //handled... return 0 return(0); }break; case WM_ACTIVATEAPP: { if(wParam) { if(bPaused) { //being activated bPaused=false; //restore all surfaces lpdd->RestoreAllSurfaces(); //clear out back buffer DDBLTFX ddbltfx; DDBLTFX_ColorFill(&ddbltfx,0); lpddsBack->Blt(NULL,NULL,NULL,DDBLT_WAIT | DDBLT_COLORFILL,&ddbltfx); //reload ball images LPDDS_ReloadFromFile(lpddsBall,"IsoHex6_4.bmp"); } } else { //being deactivated bPaused=true; } }break; case WM_KEYDOWN: { //check for escape key if(wParam==VK_ESCAPE) { DestroyWindow(hWndMain); } return(0);//handled message }break; case WM_DESTROY://the window is being destroyed { //tell the application we are quitting PostQuitMessage(0); //handled message, so return 0 return(0); }break; case WM_PAINT://the window needs repainting { //a variable needed for painting information PAINTSTRUCT ps; //start painting HDC hdc=BeginPaint(hwnd,&ps); ///////////////////////////// //painting code would go here ///////////////////////////// //end painting EndPaint(hwnd,&ps); //handled message, so return 0 return(0); }break; } //pass along any other message to default message handler return(DefWindowProc(hwnd,uMsg,wParam,lParam)); } ////////////////////////////////////////////////////////////////////////////// //WINMAIN ////////////////////////////////////////////////////////////////////////////// int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd) { //assign instance to global variable hInstMain=hInstance; //create window class WNDCLASSEX wcx; //set the size of the structure wcx.cbSize=sizeof(WNDCLASSEX); //class style wcx.style=CS_OWNDC | CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS; //window procedure wcx.lpfnWndProc=TheWindowProc; //class extra wcx.cbClsExtra=0; //window extra wcx.cbWndExtra=0; //application handle wcx.hInstance=hInstMain; //icon wcx.hIcon=LoadIcon(NULL,IDI_APPLICATION); //cursor wcx.hCursor=LoadCursor(NULL,IDC_ARROW); //background color wcx.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH); //menu wcx.lpszMenuName=NULL; //class name wcx.lpszClassName=WINDOWCLASS; //small icon wcx.hIconSm=NULL; //register the window class, return 0 if not successful if(!RegisterClassEx(&wcx)) return(0); //create main window hWndMain=CreateWindowEx(0,WINDOWCLASS,WINDOWTITLE, WS_BORDER | WS_CAPTION | WS_SYSMENU | WS_VISIBLE,0,0,640,480,NULL,NULL,hInstMain,NULL); //error check if(!hWndMain) return(0); //if program initialization failed, then return with 0 if(!Prog_Init()) return(0); //message structure MSG msg; //message pump for(;;) { //look for a message if(PeekMessage(&msg,NULL,0,0,PM_REMOVE)) { //there is a message //check that we arent quitting if(msg.message==WM_QUIT) break; //translate message TranslateMessage(&msg); //dispatch message DispatchMessage(&msg); } //run main game loop Prog_Loop(); } //clean up program data Prog_Done(); //return the wparam from the WM_QUIT message return(msg.wParam); } ////////////////////////////////////////////////////////////////////////////// //INITIALIZATION ////////////////////////////////////////////////////////////////////////////// bool Prog_Init() { //create direct draw object lpdd=LPDD_Create(hWndMain,DDSCL_NORMAL); //check the display bpp DDSURFACEDESC2 ddsd; DDSD_Clear(&ddsd); lpdd->GetDisplayMode(&ddsd); if(ddsd.ddpfPixelFormat.dwRGBBitCount<16) { if(MessageBox(hWndMain,"This demo is designed for hi-color modes. Continuing in your current display mode may not look as good. Do you wish to continue?","Continue?",MB_YESNO)==IDNO) { //do not continue return(false); } } //retrieve client rectangle RECT rcClient; GetClientRect(hWndMain,&rcClient); //keep display width and height in global variables dwDisplayWidth=rcClient.right; dwDisplayHeight=rcClient.bottom; //create the primary surface with no back buffers lpddsPrime=LPDDS_CreatePrimary(lpdd,0); //retrieve back buffer lpddsBack=LPDDS_CreateOffscreen(lpdd,dwDisplayWidth,dwDisplayHeight); //do an initial clearing out of the back buffer DDBLTFX ddbltfx; DDBLTFX_ColorFill(&ddbltfx,0); //do a color fill lpddsBack->Blt(NULL,NULL,NULL,DDBLT_WAIT | DDBLT_COLORFILL, &ddbltfx); //create clipper lpdd->CreateClipper(0,&lpddclip,NULL); //set clipper window lpddclip->SetHWnd(0,hWndMain); //attach clipper lpddsPrime->SetClipper(lpddclip); //load in the ball image gdicBall.Load(NULL,"IsoHex7_2.bmp"); //create an offscreen surface to contain the ball lpddsBall=LPDDS_LoadFromFile(lpdd,"IsoHex7_2.bmp"); //create a black color key LPDDS_SetSrcColorKey(lpddsBall,0); //initialize ball position and velocity ptBallPosition[0].x=0; ptBallPosition[0].y=0; ptLastPosition[0].x=0; ptLastPosition[0].y=0; ptBallPosition[1].x=0; ptBallPosition[1].y=0; ptLastPosition[1].x=0; ptLastPosition[1].y=0; ptBallVelocity[0].x=4; ptBallVelocity[0].y=2; ptBallVelocity[1].x=2; ptBallVelocity[1].y=4; //setup the primary blit position ptPrimeBlt.x=0; ptPrimeBlt.y=0; ClientToScreen(hWndMain,&ptPrimeBlt); return(true);//return success } ////////////////////////////////////////////////////////////////////////////// //CLEANUP ////////////////////////////////////////////////////////////////////////////// void Prog_Done() { //clean up clipper LPDDCLIP_Release(&lpddclip); //clean up ball surface LPDDS_Release(&lpddsBall); //clean up "back buffer" LPDDS_Release(&lpddsBack); //clean up primary surface LPDDS_Release(&lpddsPrime); //clean up the dd pointer LPDD_Release(&lpdd); //clean up gdicanvas gdicBall.Destroy(); } ////////////////////////////////////////////////////////////////////////////// //MAIN GAME LOOP ////////////////////////////////////////////////////////////////////////////// void Prog_Loop() { //if paused, return without doing anything if(bPaused) return; int index; for(index=0;index<2;index++) { //set up rectangle for filling RECT rcFill; SetRect(&rcFill,ptLastPosition[index].x,ptLastPosition[index].y,ptLastPosition[index].x+gdicBall.GetWidth(),ptLastPosition[index].y+gdicBall.GetHeight()); //set up a ddbltfx DDBLTFX ddbltfx; DDBLTFX_ColorFill(&ddbltfx,0); //blt the color fill to the back buffer lpddsBack->Blt(&rcFill,NULL,NULL,DDBLT_WAIT | DDBLT_COLORFILL, &ddbltfx); } for(index=0;index<2;index++) { //set up source and destination rects for blitting the ball RECT rcSrc; RECT rcDst; SetRect(&rcSrc,0,0,gdicBall.GetWidth(),gdicBall.GetHeight()); CopyRect(&rcDst,&rcSrc); OffsetRect(&rcDst,ptBallPosition[index].x,ptBallPosition[index].y); //blit the ball lpddsBack->Blt(&rcDst,lpddsBall,&rcSrc,DDBLT_WAIT | DDBLT_KEYSRC, NULL); //copy current position of ball to old position ptLastPosition[index]=ptBallPosition[index]; //move the ball ptBallPosition[index].x+=ptBallVelocity[index].x; ptBallPosition[index].y+=ptBallVelocity[index].y; //bounds checking //left side if(ptBallPosition[index].x<=0) ptBallVelocity[index].x=abs(ptBallVelocity[index].x); //top side if(ptBallPosition[index].y<=0) ptBallVelocity[index].y=abs(ptBallVelocity[index].y); //right side if(ptBallPosition[index].x>=(int)dwDisplayWidth-gdicBall.GetWidth()) ptBallVelocity[index].x=-abs(ptBallVelocity[index].x); //bottom side if(ptBallPosition[index].y>=(int)dwDisplayHeight-gdicBall.GetHeight()) ptBallVelocity[index].y=-abs(ptBallVelocity[index].y); } //copy from "back buffer" onto primary //declare rectangles RECT rcSrc; RECT rcDst; //set up source rectangle SetRect(&rcSrc,0,0,dwDisplayWidth,dwDisplayHeight); //copy source rect to destination rect CopyRect(&rcDst,&rcSrc); //offset by the screen coordinate of the window's client area OffsetRect(&rcDst,ptPrimeBlt.x,ptPrimeBlt.y); //performa the blit lpddsPrime->Blt(&rcDst,lpddsBack,&rcSrc,DDBLT_WAIT,NULL); } 
