demoii12_3.cpp

3D游戏编程大师技巧第十二章的源代码

// DEMOII12_3.CPP - Alpha Blending demo with polygon level control
// READ THIS!
// To compile make sure to include DDRAW.LIB, DSOUND.LIB,
// DINPUT.LIB, DINPUT8.LIB, WINMM.LIB in the project link list, and of course 
// the C++ source modules T3DLIB1-10.CPP and the headers T3DLIB1-10.H
// be in the working directory of the compiler

// INCLUDES ///////////////////////////////////////////////

#define DEBUG_ON

#define INITGUID       // make sure al the COM interfaces are available
                       // instead of this you can include the .LIB file
                       // DXGUID.LIB

#define WIN32_LEAN_AND_MEAN  

#include <windows.h>   // include important windows stuff
#include <windowsx.h> 
#include <mmsystem.h>
#include <iostream.h> // include important C/C++ stuff
#include <conio.h> 
#include <stdlib.h>  
#include <malloc.h> 
#include <memory.h> 
#include <string.h>   
#include <stdarg.h> 
#include <stdio.h>    
#include <math.h>
#include <io.h>
#include <fcntl.h> 

#include <ddraw.h>  // directX includes 
#include <dsound.h>
#include <dmksctrl.h>
#include <dmusici.h>
#include <dmusicc.h>
#include <dmusicf.h>
#include <dinput.h>
#include "T3DLIB1.h" // game library includes
#include "T3DLIB2.h"
#include "T3DLIB3.h"
#include "T3DLIB4.h"
#include "T3DLIB5.h"
#include "T3DLIB6.h"
#include "T3DLIB7.h"
#include "T3DLIB8.h"
#include "T3DLIB9.h"
#include "T3DLIB10.h"

// DEFINES ////////////////////////////////////////////////

// defines for windows interface
#define WINDOW_CLASS_NAME "WIN3DCLASS"  // class name
#define WINDOW_TITLE      "T3D Graphics Console Ver 2.0"
#define WINDOW_WIDTH      800  // size of window
#define WINDOW_HEIGHT     600

#define WINDOW_BPP        16    // bitdepth of window (8,16,24 etc.)
                                // note: if windowed and not
                                // fullscreen then bitdepth must
                                // be same as system bitdepth
                                // also if 8-bit the a pallete
                                // is created and attached
   
#define WINDOWED_APP      0    // 0 not windowed, 1 windowed 

// create some constants for ease of access
#define AMBIENT_LIGHT_INDEX   0 // ambient light index
#define INFINITE_LIGHT_INDEX  1 // infinite light index
#define POINT_LIGHT_INDEX     2 // point light index
#define SPOT_LIGHT1_INDEX     4 // point light index
#define SPOT_LIGHT2_INDEX     3 // spot light index

#define CAM_DECEL            (.25)  // deceleration/friction
#define MAX_SPEED             20
#define NUM_OBJECTS           5     // number of objects system loads
#define NUM_SCENE_OBJECTS     100    // number of scenery objects 
#define UNIVERSE_RADIUS       2000  // size of universe
#define MAX_VEL               20   // maxium velocity of objects

// PROTOTYPES /////////////////////////////////////////////

// game console
int Game_Init(void *parms=NULL);
int Game_Shutdown(void *parms=NULL);
int Game_Main(void *parms=NULL);

// GLOBALS ////////////////////////////////////////////////

HWND main_window_handle           = NULL; // save the window handle
HINSTANCE main_instance           = NULL; // save the instance
char buffer[2048];                        // used to print text

// initialize camera position and direction
POINT4D  cam_pos    = {0,0,0,1};
POINT4D  cam_target = {0,0,0,1};
VECTOR4D cam_dir    = {0,0,0,1};

// all your initialization code goes here...
VECTOR4D vscale={1.0,1.0,1.0,1},  
         vpos = {0,0,150,1}, 
         vrot = {0,0,0,1};

CAM4DV1         cam;                    // the single camera
OBJECT4DV2_PTR  obj_work;               // pointer to active working object
OBJECT4DV2      obj_array[NUM_OBJECTS], // array of objects 
                obj_scene;              // general scenery object
               
// filenames of objects to load
char *object_filenames[NUM_OBJECTS] = { "sphere_bw01.cob",
                                        "sphere_red_alpha01.cob",  
                                        "sphere_green_alpha01.cob",
                                        "sphere_blue_alpha01.cob",
                                        "sphere_white_alpha01.cob",

                                      };

POINT4D         scene_objects[NUM_SCENE_OBJECTS];     // positions of scenery objects
VECTOR4D        scene_objects_vel[NUM_SCENE_OBJECTS]; // velocities of scenery objects

RENDERLIST4DV2  rend_list;      // the render list
RGBAV1 white, gray, black, red, green, blue; // general colors

// physical model defines
float cam_speed  = 0;       // speed of the camera/jeep

ZBUFFERV1 zbuffer;          // out little z buffer!
RENDERCONTEXTV1 rc;         // the rendering context
BOB background;             // the background image

// FUNCTIONS //////////////////////////////////////////////

LRESULT CALLBACK WindowProc(HWND hwnd, 
						    UINT msg, 
                            WPARAM wparam, 
                            LPARAM lparam)
{
// this is the main message handler of the system
PAINTSTRUCT	ps;		   // used in WM_PAINT
HDC			hdc;	   // handle to a device context

// what is the message 
switch(msg)
	{	
	case WM_CREATE: 
        {
		// do initialization stuff here
		return(0);
		} break;

    case WM_PAINT:
         {
         // start painting
         hdc = BeginPaint(hwnd,&ps);

         // end painting
         EndPaint(hwnd,&ps);
         return(0);
        } break;

	case WM_DESTROY: 
		{
		// kill the application			
		PostQuitMessage(0);
		return(0);
		} break;

	default:break;

    } // end switch

// process any messages that we didn't take care of 
return (DefWindowProc(hwnd, msg, wparam, lparam));

} // end WinProc

// WINMAIN ////////////////////////////////////////////////

int WINAPI WinMain(	HINSTANCE hinstance,
					HINSTANCE hprevinstance,
					LPSTR lpcmdline,
					int ncmdshow)
{
// this is the winmain function

WNDCLASS winclass;	// this will hold the class we create
HWND	 hwnd;		// generic window handle
MSG		 msg;		// generic message
HDC      hdc;       // generic dc
PAINTSTRUCT ps;     // generic paintstruct

// first fill in the window class stucture
winclass.style			= CS_DBLCLKS | CS_OWNDC | 
                          CS_HREDRAW | CS_VREDRAW;
winclass.lpfnWndProc	= WindowProc;
winclass.cbClsExtra		= 0;
winclass.cbWndExtra		= 0;
winclass.hInstance		= hinstance;
winclass.hIcon			= LoadIcon(NULL, IDI_APPLICATION);
winclass.hCursor		= LoadCursor(NULL, IDC_ARROW);
winclass.hbrBackground	= (HBRUSH)GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName	= NULL; 
winclass.lpszClassName	= WINDOW_CLASS_NAME;

// register the window class
if (!RegisterClass(&winclass))
	return(0);

// create the window, note the test to see if WINDOWED_APP is
// true to select the appropriate window flags
if (!(hwnd = CreateWindow(WINDOW_CLASS_NAME, // class
						  WINDOW_TITLE,	 // title
						  (WINDOWED_APP ? (WS_OVERLAPPED | WS_SYSMENU | WS_CAPTION) : (WS_POPUP | WS_VISIBLE)),
					 	  0,0,	   // x,y
						  WINDOW_WIDTH,  // width
                          WINDOW_HEIGHT, // height
						  NULL,	   // handle to parent 
						  NULL,	   // handle to menu
						  hinstance,// instance
						  NULL)))	// creation parms
return(0);

// save the window handle and instance in a global
main_window_handle = hwnd;
main_instance      = hinstance;

// resize the window so that client is really width x height
if (WINDOWED_APP)
{
// now resize the window, so the client area is the actual size requested
// since there may be borders and controls if this is going to be a windowed app
// if the app is not windowed then it won't matter
RECT window_rect = {0,0,WINDOW_WIDTH-1,WINDOW_HEIGHT-1};

// make the call to adjust window_rect
AdjustWindowRectEx(&window_rect,
     GetWindowStyle(main_window_handle),
     GetMenu(main_window_handle) != NULL,  
     GetWindowExStyle(main_window_handle));

// save the global client offsets, they are needed in DDraw_Flip()
window_client_x0 = -window_rect.left;
window_client_y0 = -window_rect.top;

// now resize the window with a call to MoveWindow()
MoveWindow(main_window_handle,
           0,                                    // x position
           0,                                    // y position
           window_rect.right - window_rect.left, // width
           window_rect.bottom - window_rect.top, // height
           FALSE);

// show the window, so there's no garbage on first render
ShowWindow(main_window_handle, SW_SHOW);
} // end if windowed

// perform all game console specific initialization
Game_Init();

// disable CTRL-ALT_DEL, ALT_TAB, comment this line out 
// if it causes your system to crash
SystemParametersInfo(SPI_SCREENSAVERRUNNING, TRUE, NULL, 0);

// enter main event loop
while(1)
	{
	if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
		{ 
		// test if this is a quit
        if (msg.message == WM_QUIT)
           break;
	
		// translate any accelerator keys
		TranslateMessage(&msg);

		// send the message to the window proc
		DispatchMessage(&msg);
		} // end if
    
    // main game processing goes here
    Game_Main();

	} // end while

// shutdown game and release all resources
Game_Shutdown();

// enable CTRL-ALT_DEL, ALT_TAB, comment this line out 
// if it causes your system to crash
SystemParametersInfo(SPI_SCREENSAVERRUNNING, FALSE, NULL, 0);

// return to Windows like this
return(msg.wParam);

} // end WinMain

// T3D II GAME PROGRAMMING CONSOLE FUNCTIONS ////////////////

int Game_Init(void *parms)
{
// this function is where you do all the initialization 
// for your game

int index; // looping var

// start up DirectDraw (replace the parms as you desire)
DDraw_Init2(WINDOW_WIDTH, WINDOW_HEIGHT, WINDOW_BPP, WINDOWED_APP,0);

// initialize directinput
DInput_Init();

// acquire the keyboard 
DInput_Init_Keyboard();

// add calls to acquire other directinput devices here...

// initialize directsound and directmusic
DSound_Init();