📄 invasion.cpp
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GLuint PixelFormat; // Holds The Results After Searching For A Match
WNDCLASS wc; // Windows Class Structure
DWORD dwExStyle; // Window Extended Style
DWORD dwStyle; // Window Style
RECT WindowRect; // Grabs Rectangle Upper Left / Lower Right Values
WindowRect.left=(long)0; // Set Left Value To 0
WindowRect.right=(long)width; // Set Right Value To Requested Width
WindowRect.top=(long)0; // Set Top Value To 0
WindowRect.bottom=(long)height; // Set Bottom Value To Requested Height
hInstance = GetModuleHandle(NULL); // Grab An Instance For Our Window
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // Redraw On Size, And Own DC For Window.
wc.lpfnWndProc = (WNDPROC) WndProc; // WndProc Handles Messages
wc.cbClsExtra = 0; // No Extra Window Data
wc.cbWndExtra = 0; // No Extra Window Data
wc.hInstance = hInstance; // Set The Instance
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); // Load The Default Icon
wc.hCursor = LoadCursor(NULL, IDC_ARROW); // Load The Arrow Pointer
wc.hbrBackground = NULL; // No Background Required For GL
wc.lpszMenuName = NULL; // We Don't Want A Menu
wc.lpszClassName = "OpenGL"; // Set The Class Name
if (!RegisterClass(&wc)) // Attempt To Register The Window Class
{
MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if (*fullscreen) // Attempt Fullscreen Mode?
{
DEVMODE dmScreenSettings; // Device Mode
memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); // Makes Sure Memory's Cleared
dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure
dmScreenSettings.dmPelsWidth = width; // Selected Screen Width
dmScreenSettings.dmPelsHeight = height; // Selected Screen Height
dmScreenSettings.dmBitsPerPel = bits; // Selected Bits Per Pixel
dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;
// Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
{
// If The Mode Fails, Offer Two Options. Quit Or Use Windowed Mode.
if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
{
*fullscreen=FALSE; // Windowed Mode Selected. Fullscreen = FALSE
}
else
{
// Pop Up A Message Box Letting User Know The Program Is Closing.
MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
return FALSE; // Return FALSE
}
}
}
if (*fullscreen) // Are We Still In Fullscreen Mode?
{
dwExStyle=WS_EX_APPWINDOW; // Window Extended Style
dwStyle=WS_POPUP; // Windows Style
ShowMouseCursor(FALSE); // Hide Mouse Pointer
}
else
{
dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; // Window Extended Style
dwStyle=WS_OVERLAPPEDWINDOW; // Windows Style
}
AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle); // Adjust Window To True Requested Size
// Create The Window
if (!(hWnd=CreateWindowEx( dwExStyle, // Extended Style For The Window
"OpenGL", // Class Name
title, // Window Title
dwStyle | // Defined Window Style
WS_CLIPSIBLINGS | // Required Window Style
WS_CLIPCHILDREN, // Required Window Style
0, 0, // Window Position
WindowRect.right-WindowRect.left, // Calculate Window Width
WindowRect.bottom-WindowRect.top, // Calculate Window Height
NULL, // No Parent Window
NULL, // No Menu
hInstance, // Instance
NULL))) // Dont Pass Anything To WM_CREATE
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be
{
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
PFD_DOUBLEBUFFER, // Must Support Double Buffering
PFD_TYPE_RGBA, // Request An RGBA Format
bits, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
16, // 16Bit Z-Buffer (Depth Buffer)
0, // No Stencil Buffer
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
if (!(hDC=GetDC(hWnd))) // Did We Get A Device Context?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd))) // Did Windows Find A Matching Pixel Format?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if(!SetPixelFormat(hDC,PixelFormat,&pfd)) // Are We Able To Set The Pixel Format?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if (!(hRC=wglCreateContext(hDC))) // Are We Able To Get A Rendering Context?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if(!wglMakeCurrent(hDC,hRC)) // Try To Activate The Rendering Context
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
ShowWindow(hWnd,SW_SHOW); // Show The Window
SetForegroundWindow(hWnd); // Slightly Higher Priority
SetFocus(hWnd); // Sets Keyboard Focus To The Window
ReSizeGLScene(width, height); // Set Up Our Perspective GL Screen
if (!InitGL()) // Initialize Our Newly Created GL Window
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
// Get OpenGL Information
// Version
if(pbyOpenGLVersion)
delete pbyOpenGLVersion;
pbyOpenGLVersion = new char[strlen((const char *) glGetString(GL_VERSION))+1];
strcpy(pbyOpenGLVersion, (const char *) glGetString(GL_VERSION));
// Chip Info
if(pbyOpenGLChipInfo)
delete pbyOpenGLChipInfo;
pbyOpenGLChipInfo = new char[strlen((const char *) glGetString(GL_VENDOR))+1];
strcpy(pbyOpenGLChipInfo, (const char *) glGetString(GL_VENDOR));
// Renderer Info
if(pbyOpenGLRendererInfo)
delete pbyOpenGLRendererInfo;
pbyOpenGLRendererInfo = new char[strlen((const char *) glGetString(GL_RENDERER))+1];
strcpy(pbyOpenGLRendererInfo, (const char *) glGetString(GL_RENDERER));
// Extensions Info
if(pbyOpenGLExtensionInfo)
delete pbyOpenGLExtensionInfo;
pbyOpenGLExtensionInfo = new char[strlen((const char *) glGetString(GL_EXTENSIONS))+1];
strcpy(pbyOpenGLExtensionInfo, (const char *) glGetString(GL_EXTENSIONS));
// Initialize DirectX Sound
if(FAILED(DSUtil_InitDirectSound(hWnd)))
bSoundPossible = FALSE;
else
bSoundPossible = TRUE;
InitSounds();
StartNewMidi();
return TRUE; // Success
}
LRESULT CALLBACK WndProc( HWND hWnd, // Handle For This Window
UINT uMsg, // Message For This Window
WPARAM wParam, // Additional Message Information
LPARAM lParam) // Additional Message Information
{
switch (uMsg) // Check For Windows Messages
{
case MCI_NOTIFY:
{
if (wParam == MCI_NOTIFY_SUCCESSFUL)
StartNewMidi();
}
break;
case WM_ACTIVATE: // Watch For Window Activate Message
{
if (!HIWORD(wParam)) // Check Minimization State
{
active=TRUE; // Program Is Active
}
else
{
active=FALSE; // Program Is No Longer Active
}
return 0; // Return To The Message Loop
}
case WM_PAINT:
DrawGLScene(); // Here's Where We Do All The Drawing
break;
case WM_SYSKEYUP:
switch (wParam) // Check System Calls
{
case VK_RETURN:
KillGLWindow(); // Kill Our Current Window
Config.bFullScreen=!Config.bFullScreen; // Toggle Fullscreen / Windowed Mode
// Recreate Our OpenGL Window
if(!Config.bFullScreen)
{
if (!CreateGLWindow(APP_TITLE,Config.iWindowWidth,Config.iWindowHeight,Config.DevMode.dmBitsPerPel,&Config.bFullScreen))
return 0; // Quit If Window Was Not Created
}
else
{
if (!CreateGLWindow(APP_TITLE,Config.DevMode.dmPelsWidth,Config.DevMode.dmPelsHeight,Config.DevMode.dmBitsPerPel,&Config.bFullScreen))
return 0; // Quit If Window Was Not Created
}
break;
}
break;
case WM_SYSCOMMAND: // Intercept System Commands
switch (wParam) // Check System Calls
{
case SC_SCREENSAVE: // Screensaver Trying To Start?
case SC_MONITORPOWER: // Monitor Trying To Enter Powersave?
return 0; // Prevent From Happening
}
break;
case WM_CLOSE: // Did We Receive A Close Message?
{
PostQuitMessage(0); // Send A Quit Message
return 0; // Jump Back
}
case WM_KEYDOWN: // Is A Key Being Held Down?
{
keys[wParam] = TRUE; // If So, Mark It As TRUE
return 0; // Jump Back
}
case WM_KEYUP: // Has A Key Been Released?
{
keys[wParam] = FALSE; // If So, Mark It As FALSE
return 0; // Jump Back
}
case WM_SIZE: // Resize The OpenGL Window
{
Config.iWindowWidth = LOWORD(lParam);
Config.iWindowHeight = HIWORD(lParam);
ReSizeGLScene(LOWORD(lParam),HIWORD(lParam)); // LoWord=Width, HiWord=Height
return 0; // Jump Back
}
}
// Pass All Unhandled Messages To DefWindowProc
return DefWindowProc(hWnd,uMsg,wParam,lParam);
}
void CheckObjects(ACTOR *pActor2)
{
ACTOR *pActor;
short i;
for(i = 0; i < MAX_OBJECTS; i++)
{
pActor = &pObject[i];
if(!pActor->bActive && pActor2 != NULL)
{
pActor->fPos[X] = pActor2->fPos[X];
pActor->fPos[Y] = pActor2->fPos[Y];
pActor->fPosVelocity[Y] = -1.0f;
if(rand() % 2 == 1)
pActor->fPosVelocity[X] = (float) (rand() % 100)/100.0f;
else
pActor->fPosVelocity[X] = -((float) (rand() % 100)/100.0f);
// A Object Should Go Into The World
if((rand() % pLevel->iObjectPowerIncreaseRandom) == 2)
{
pActor->bActive = TRUE;
pActor->iType = OBJECT_POWER_INCREASE;
}
else
if((rand() % pLevel->iObjectWallRandom) == 2)
{
pActor->bActive = TRUE;
pActor->iType = OBJECT_WALL;
}
else
if((rand() % pLevel->iObjectSingleLaserRandom) == 2)
{
pActor->bActive = TRUE;
pActor->iType = OBJECT_SINGLE_LASER_WEAPON;
}
else
if((rand() % pLevel->iObjectDoubleLaserRandom) == 2)
{
pActor->bActive = TRUE;
pActor->iType = OBJECT_DOUBLE_LASER_WEAPON;
}
else
if((rand() % pLevel->iObjectLiveRandom) == 2)
{
pActor->bActive = TRUE;
pActor->iType = OBJECT_LIVE;
}
continue;
}
if(pActor->bActive)
{
pActor->fPos[X] += (pActor->fPosVelocity[X]*g_lDeltatime)/1000.0f;
pActor->fPos[Y] += (pActor->fPosVelocity[Y]*g_lDeltatime)/100.0f;
pActor->fRot[X] += (5.0f*g_lDeltatime)/100.0f;
pActor->fRot[Y] += (5.0f*g_lDeltatime)/100.0f;
pActor->fRot[Z] += (5.0f*g_lDeltatime)/100.0f;
if(pActor->fPos[Y] < -20.0f || pActor->fPos[X] > SPACE_WIDTH+20.0f ||
pActor->fPos[X] < -0.0f)
pActor->bActive = FALSE;
}
}
}
void CheckShot(void)
{
ACTOR *pActor, *pActor2;
short i, i2, i3;
float fX, fY, fDistance, f;
BOOL bCheckOnlyWall = FALSE, bCheckNoWall = FALSE;
for(i = 0; i < MAX_SHOTS; i++)
{
pActor = &pShot[i];
if(!pActor->bActive)
continue;
pActor->fPos[Y] += (pActor->fPosVelocity[Y]*g_lDeltatime)/50.0f;
pActor->fPos[X] += (pActor->fPosVelocity[X]*g_lDeltatime)/50.0f;
if(pActor->fPos[X] < -100.0f)
pActor->bActive = FALSE;
if(pActor->fPos[X] > SPACE_WIDTH+100.0f)
pActor->bActive = FALSE;
if(pActor->iType != WORMHOLE_SHOT && pActor->fPos[Y] > SPACE_HEIGHT+5.0f &&
pActor->iType == PLAYER_SHOT)
{
pActor->bActive = FALSE;
if(byPlayerWeapon == DOUBLE_LASER_WEAPON)
fWormholeHitPoints -= 8.0f;
else
fWormholeHitPoints -= 10.0f;
DSUtil_PlaySound(pWormholeSound, 0);
}
if(pActor->fPos[Y] < -20.0f)
pActor->bActive = FALSE;
bCheckNoWall = FALSE;
switch(pActor->iType)
{
case PLAYER_SHOT: case WORMHOLE_SHOT:
if(!pActor->pFrameT)
break;
CheckAlien:
for(i2 = 0; i2 < MAX_ALIENS; i2++)
{
pActor2 = &pAlien[i2];
if(!pActor2->bActive || !pActor2->pFrameT ||
pActor2->iExplosionStep != -1)
continue;
if(pActor2->iType == ALIEN_2)
f = -13.0f;
else
f = -7.0f;
if(bCheckOnlyWall && pActor2->iType != WALL)
continue;
fX = pActor2->fPos[X]+pActor2->fPos2[X]-pActor->fPos[X];
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