www.pudn.com > ÈýάÌì¿ÕÓëµØÐÎ.zip > Main.cpp, change:2001-10-15,size:8835b
// SkyDome Demo - October 2001
//
// Luis R. Sempé
// visual@spheregames.com
// Sphere Games (http://www.spheregames.com)
//
// You may use, copy, distribute or create derivative software
// for any purpose. If you do, I'd appreciate it if you write me
// and let me know what you do with it. Thanks!
// Have fun!
////////////////////////////////////////////////////
#include <windows.h>
#include <mmsystem.h>
#include <math.h>
#include <stdio.h>
#include "Main.h"
#include "oglInit.h"
#include "SkyDome.h"
#include "SkyPlane.h"
#include "Terrain.h"
#include "font.h"
bool bp = false;
bool bf = false;
bool bh = false;
bool bw = false;
bool fog = false;
bool Dome = true;
bool ShowHelp = false;
bool Wireframe = false;
float tx=5.0f, ty=-40.0f, tz=34.0f;
float rx=0.0f, ry=0.0f, rz=0.0f;
int WINAPI WinMain( HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MSG msg;
BOOL done=FALSE;
if (!CreateGLWindow("SkyDome Demo", 640, 480, 16))
{
MessageBox(hWnd, "Unable to Create the App Window", "ERROR", MB_OK);
return 0;
}
while(!done)
{
if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
{
if (msg.message==WM_QUIT)
done=TRUE;
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
else
{
// Set the sky texture
glBindTexture(GL_TEXTURE_2D, texture[0]);
glLoadIdentity();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Update the player's position
Move(-tx, -ty, -tz, -rx, -ry, -rz);
// Render the selected dome
if (Dome)
RenderSkyDome();
else
RenderSkyPlane();
// Set the terrain texture and render it
glBindTexture(GL_TEXTURE_2D, texture[1]);
RenderTerrain();
// Print some information
glLoadIdentity();
PostString("SkyDome Demo", 1, 0, 0);
PostString("Press H for Help",1, 1, 0);
PostString("Sphere Games (C) 2001", 60, 32, 0);
if (Dome)
PostString("SkyDome", 60, 0, 0);
else
PostString("SkyPlane", 60, 0, 0);
DisplayStats();
if (ShowHelp)
{
PostString("W Toggle Wireframe On/Off", 1, 4, 0);
PostString("D Change SkyDome Mode ", 1, 5, 0);
PostString("F Toggle Fog On/Off", 1, 6, 0);
PostString("ESC Quit", 1, 7, 0);
}
glLoadIdentity();
glColor3f(1.0f, 1.0f, 1.0f);
RenderStrings();
// if ESC was pressed, or the app isn't active, bail
if (!active || keys[VK_ESCAPE])
done=TRUE;
else
{
SwapBuffers(hdc);
// Get input from the user
// Dome technique
if (keys['D'] && !bp)
{
bp = true;
Dome = !Dome;
}
if (!keys['D'])
bp = false;
// Fog
if (keys['F'] && !bf)
{
bf = true;
fog = !fog;
if (fog)
glEnable(GL_FOG);
else
glDisable(GL_FOG);
}
if (!keys['F'])
bf = false;
// Help
if (keys['H'] && !bh)
{
bh = true;
ShowHelp = !ShowHelp;
}
if (!keys['H'])
bh = false;
// Wireframe
if (keys['W'] && !bw)
{
bw = true;
Wireframe = !Wireframe;
if (Wireframe)
{
glDisable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
else
{
glEnable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
if (!keys['W'])
bw = false;
// Movement
if (keys[VK_UP])
{
tx += (float)sin(ry*3.1415926/180);
tz += (float)cos(ry*3.1415926/180);
}
if (keys[VK_DOWN])
{
tx -= (float)sin(ry*3.1415926/180);
tz -= (float)cos(ry*3.1415926/180);
}
if (keys[VK_LEFT])
{
ry += 1.0f;
}
if (keys[VK_RIGHT])
{
ry -= 1.0f;
}
if (keys['A'])
ty -= 0.5f;
if (keys['Z'])
ty += 0.5f;
}
}
}
Shutdown();
return (msg.wParam);
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_ACTIVATE:
{
if (!HIWORD(wParam))
active=TRUE;
else
active=FALSE;
return 0;
}
case WM_SYSCOMMAND:
{
switch (wParam)
{
// disable screensaver and suspend
case SC_SCREENSAVE:
case SC_MONITORPOWER:
return 0;
}
break;
}
case WM_CLOSE:
{
PostQuitMessage(0);
return 0;
}
case WM_KEYDOWN:
{
keys[wParam] = TRUE;
return 0;
}
case WM_KEYUP:
{
keys[wParam] = FALSE;
return 0;
}
case WM_SIZE:
{
ResizeGLWindow(LOWORD(lParam),HIWORD(lParam));
return 0;
}
}
return DefWindowProc(hWnd,uMsg,wParam,lParam);
}
BOOL CreateGLWindow(char* title, int width, int height, int bits)
{
GLuint PixelFormat;
WNDCLASS wc;
DWORD dwExStyle;
DWORD dwStyle;
RECT WindowRect;
WindowRect.left=(long)0;
WindowRect.right=(long)width;
WindowRect.top=(long)0;
WindowRect.bottom=(long)height;
hInstance = GetModuleHandle(NULL);
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC) WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = CLASS_NAME;
if (!RegisterClass(&wc))
{
MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
dwStyle=WS_OVERLAPPEDWINDOW;
AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);
if (!(hWnd=CreateWindowEx( dwExStyle,
CLASS_NAME,
title,
dwStyle |
WS_CLIPSIBLINGS |
WS_CLIPCHILDREN,
0, 0,
WindowRect.right-WindowRect.left,
WindowRect.bottom-WindowRect.top,
NULL,
NULL,
hInstance,
NULL)))
{
Shutdown();
MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
static PIXELFORMATDESCRIPTOR pfd=
{
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
bits,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
if (!(hdc=GetDC(hWnd)))
{
Shutdown();
MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
if (!(PixelFormat=ChoosePixelFormat(hdc,&pfd)))
{
Shutdown();
MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
if(!SetPixelFormat(hdc,PixelFormat,&pfd))
{
Shutdown();
MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
if (!(hrc=wglCreateContext(hdc)))
{
Shutdown();
MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
if(!wglMakeCurrent(hdc,hrc))
{
Shutdown();
MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
ShowWindow(hWnd,SW_SHOW);
SetForegroundWindow(hWnd);
SetFocus(hWnd);
ResizeGLWindow(width, height);
if (!InitGL())
{
Shutdown();
MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
return TRUE;
}
void Shutdown()
{
ReleaseDome();
ReleaseSkyPlane();
ReleaseTerrain();
if (hrc)
{
if (!wglMakeCurrent(NULL, NULL))
MessageBox(NULL, "Release of DC and RC failed.", "SHUTDOWN ERROR", MB_OK);
if (!wglDeleteContext(hrc))
MessageBox(NULL, "Release RC Failed.", "SHUTDOWN ERROR", MB_OK);
hrc = NULL;
}
if (hdc && !ReleaseDC(hWnd,hdc))
{
MessageBox(NULL,"Release DC Failed.","SHUTDOWN ERROR",MB_OK);
hdc=NULL;
}
if (hWnd && !DestroyWindow(hWnd))
{
MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK);
hWnd=NULL;
}
if (!UnregisterClass(CLASS_NAME,hInstance))
{
MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK);
hInstance=NULL;
}
}
void DisplayStats()
{
// framerate info
static DWORD frame = 0;
static DWORD timelast = timeGetTime();
static int FPS = 0;
DWORD timecurrent = timeGetTime();
if(timecurrent - timelast >= 1000){
FPS = frame;
frame = 0;
timelast = timecurrent;
}
else frame++;
char str[80];
sprintf(str, "FPS: %d", FPS);
PostString(str, 1, 2, 0);
}