demoii12_4.cpp

3D游戏编程大师技巧第十二章的源代码

// create some working colors
white.rgba     = _RGBA32BIT(255,255,255,0);
lightgray.rgba = _RGBA32BIT(200,200,200,0); 
gray.rgba      = _RGBA32BIT(100,100,100,0);
black.rgba     = _RGBA32BIT(0,0,0,0);
red.rgba       = _RGBA32BIT(255,0,0,0);
green.rgba     = _RGBA32BIT(0,255,0,0);
blue.rgba      = _RGBA32BIT(0,0,255,0);

// ambient light
Init_Light_LIGHTV2(lights2,               // array of lights to work with
                   AMBIENT_LIGHT_INDEX,   
                   LIGHTV2_STATE_ON,      // turn the light on
                   LIGHTV2_ATTR_AMBIENT,  // ambient light type
                   gray, black, black,    // color for ambient term only
                   NULL, NULL,            // no need for pos or dir
                   0,0,0,                 // no need for attenuation
                   0,0,0);                // spotlight info NA

VECTOR4D dlight_dir = {-1,1,0,1}; 

// directional light
Init_Light_LIGHTV2(lights2,               // array of lights to work with
                   INFINITE_LIGHT_INDEX,  
                   LIGHTV2_STATE_ON,      // turn the light on
                   LIGHTV2_ATTR_INFINITE, // infinite light type
                   black, lightgray, black,    // color for diffuse term only
                   NULL, &dlight_dir,     // need direction only
                   0,0,0,                 // no need for attenuation
                   0,0,0);                // spotlight info NA


VECTOR4D plight_pos = {0,200,0,1};

// point light
Init_Light_LIGHTV2(lights2,               // array of lights to work with
                   POINT_LIGHT_INDEX,
                   LIGHTV2_STATE_ON,      // turn the light on
                   LIGHTV2_ATTR_POINT,    // pointlight type
                   black, gray, black,    // color for diffuse term only
                   &plight_pos, NULL,     // need pos only
                   0,.002,0,              // linear attenuation only
                   0,0,1);                // spotlight info NA



// create lookup for lighting engine
RGB_16_8_IndexedRGB_Table_Builder(DD_PIXEL_FORMAT565,  // format we want to build table for
                                  palette,             // source palette
                                  rgblookup);          // lookup table


// load background sounds
wind_sound_id           = DSound_Load_WAV("WIND.WAV");
water_light_sound_id    = DSound_Load_WAV("WATERLIGHT01.WAV");
water_heavy_sound_id    = DSound_Load_WAV("WATERHEAVY01.WAV");
water_splash_sound_id   = DSound_Load_WAV("SPLASH01.WAV");
zbuffer_intro_sound_id  = DSound_Load_WAV("ZBUFFER02.WAV");
zbuffer_instr_sound_id  = DSound_Load_WAV("ZINSTRUCTIONS02.WAV");
jetski_start_sound_id   = DSound_Load_WAV("jetskistart04.WAV");
jetski_idle_sound_id    = DSound_Load_WAV("jetskiidle01.WAV");
jetski_fast_sound_id    = DSound_Load_WAV("jetskifast01.WAV");
jetski_accel_sound_id   = DSound_Load_WAV("jetskiaccel01.WAV");
jetski_splash_sound_id  = DSound_Load_WAV("splash01.WAV");

// load background image
Load_Bitmap_File(&bitmap16bit, "cloud03_640.BMP");
Create_Bitmap(&background_bmp,0,0,640,480,16);
Load_Image_Bitmap16(&background_bmp, &bitmap16bit,0,0,BITMAP_EXTRACT_MODE_ABS);
Unload_Bitmap_File(&bitmap16bit);


// load in all the text images

// intro
Load_Bitmap_File(&bitmap16bit, "zbufferwr_intro01.BMP");
Create_BOB(&intro_image, WINDOW_WIDTH/2 - 560/2,40,560,160,1, BOB_ATTR_VISIBLE | BOB_ATTR_SINGLE_FRAME, DDSCAPS_SYSTEMMEMORY, 0, 16); 
Load_Frame_BOB16(&intro_image, &bitmap16bit,0,0,0,BITMAP_EXTRACT_MODE_ABS);
Unload_Bitmap_File(&bitmap16bit);

// get ready
Load_Bitmap_File(&bitmap16bit, "zbufferwr_ready01.BMP");
Create_BOB(&ready_image, WINDOW_WIDTH/2 - 596/2,40,596,244,1, BOB_ATTR_VISIBLE | BOB_ATTR_SINGLE_FRAME, DDSCAPS_SYSTEMMEMORY, 0, 16); 
Load_Frame_BOB16(&ready_image, &bitmap16bit,0,0,0,BITMAP_EXTRACT_MODE_ABS);
Unload_Bitmap_File(&bitmap16bit);

// nice one
Load_Bitmap_File(&bitmap16bit, "zbufferwr_nice01.BMP");
Create_BOB(&nice_one_image, WINDOW_WIDTH/2 - 588/2,40,588,92,1, BOB_ATTR_VISIBLE | BOB_ATTR_SINGLE_FRAME, DDSCAPS_SYSTEMMEMORY, 0, 16); 
Load_Frame_BOB16(&nice_one_image, &bitmap16bit,0,0,0,BITMAP_EXTRACT_MODE_ABS);
Unload_Bitmap_File(&bitmap16bit);

// set single precission
//_control87( _PC_24, MCW_PC );

// allocate memory for zbuffer
Create_Zbuffer(&zbuffer,
               WINDOW_WIDTH,
               WINDOW_HEIGHT,
               ZBUFFER_ATTR_32BIT);

RGB_Alpha_Table_Builder(NUM_ALPHA_LEVELS, rgb_alpha_table);

// return success
return(1);

} // end Game_Init

///////////////////////////////////////////////////////////

int Game_Shutdown(void *parms)
{
// this function is where you shutdown your game and
// release all resources that you allocated

// shut everything down

// release all your resources created for the game here....

// now directsound
DSound_Stop_All_Sounds();
DSound_Delete_All_Sounds();
DSound_Shutdown();

// directmusic
DMusic_Delete_All_MIDI();
DMusic_Shutdown();

// shut down directinput
DInput_Release_Keyboard();

// shutdown directinput
DInput_Shutdown();

// shutdown directdraw last
DDraw_Shutdown();

Close_Error_File();

Delete_Zbuffer(&zbuffer);

// return success
return(1);
} // end Game_Shutdown

//////////////////////////////////////////////////////////

int Game_Main(void *parms)
{
// this is the workhorse of your game it will be called
// continuously in real-time this is like main() in C
// all the calls for you game go here!

static MATRIX4X4 mrot;   // general rotation matrix

static float plight_ang = 0, 
             slight_ang = 0; // angles for light motion

// use these to rotate objects
static float x_ang = 0, y_ang = 0, z_ang = 0;

// state variables for different rendering modes and help
static int wireframe_mode = 1;
static int backface_mode  = 1;
static int lighting_mode  = 1;
static int help_mode      = -1;
static int zsort_mode     = 1;
static int x_clip_mode    = 1;
static int y_clip_mode    = 1;
static int z_clip_mode    = 1;
static int z_buffer_mode  = 1;
static int display_mode   = 1;
static int seafloor_mode  = 1;

char work_string[256]; // temp string

static int nice_one_on = 0; // used to display the nice one text
static int nice_count1 = 0;

static int alpha = 0;

int index; // looping var

// what state is the game in?
switch(game_state)
{

case GAME_STATE_INIT:
     {
     // perform any important initializations
 
     // transition to restart
     game_state = GAME_STATE_RESTART;

     } break;

case GAME_STATE_RESTART:
     {
     // reset all variables
     game_state_count1   = 0;
     player_state        = JETSKI_OFF;
     player_state_count1 = 0;
     gravity             = -.30;    
     vel_y               = 0;       
     cam_speed           = 0;       
     sea_level           = 30;      
     gclearance          = 75;      
     neutral_pitch       = 10;   
     turn_ang            = 0; 
     jetski_yaw          = 0;
     wave_count          = 0;
     scroll_count        = 0;
     enable_model_view   = 0;

     // set camera high atop mount aleph one
     cam.pos.x = 1550;
     cam.pos.y = 800;
     cam.pos.z = 1950;
     cam.dir.y = -140;      

     // turn on water sounds
     // start the sounds
     DSound_Play(wind_sound_id, DSBPLAY_LOOPING);
     DSound_Set_Volume(wind_sound_id, 75);

     DSound_Play(water_light_sound_id, DSBPLAY_LOOPING);
     DSound_Set_Volume(water_light_sound_id, 50);

     DSound_Play(water_heavy_sound_id, DSBPLAY_LOOPING);
     DSound_Set_Volume(water_heavy_sound_id, 30);

     DSound_Play(zbuffer_intro_sound_id);
     DSound_Set_Volume(zbuffer_intro_sound_id, 100);

     // transition to introduction sub-state of run
     game_state = GAME_STATE_INTRO;

     } break;

// in any of these cases enter into the main simulation loop
case GAME_STATE_RUN:   
case GAME_STATE_INTRO: 
case GAME_STATE_PLAY:
{  
    
// perform sub-state transition logic here
if (game_state == GAME_STATE_INTRO)
   {
   // update timer
   ++game_state_count1;

   // test for first part of intro
   if (game_state_count1 == INTRO_STATE_COUNT1)
      {
      // change amplitude of water
      DSound_Set_Volume(water_light_sound_id, 50);
      DSound_Set_Volume(water_heavy_sound_id, 100);

      // reposition camera in water
      cam.pos.x = 444; // 560;
      cam.pos.y = 200;
      cam.pos.z = -534; // -580;
      cam.dir.y = 45;// (-100);  

      // enable model
      enable_model_view = 1;
      } // end if
   else
   if (game_state_count1 == INTRO_STATE_COUNT2)
      {
      // change amplitude of water
      DSound_Set_Volume(water_light_sound_id, 20);
      DSound_Set_Volume(water_heavy_sound_id, 50);
 
      // play the instructions
      DSound_Play(zbuffer_instr_sound_id);
      DSound_Set_Volume(zbuffer_instr_sound_id, 100);

      } // end if
    else
    if (game_state_count1 == INTRO_STATE_COUNT3)
      {
      // reset counter for other use
      game_state_count1 = 0;

      // change amplitude of water
      DSound_Set_Volume(water_light_sound_id, 30);
      DSound_Set_Volume(water_heavy_sound_id, 70);

      // transition to play state
      game_state = GAME_STATE_PLAY;  
 
      } // end if

   } // end if

// start the timing clock
Start_Clock();

// clear the drawing surface 
//DDraw_Fill_Surface(lpddsback, 0);

// draw the sky
//Draw_Rectangle(0,0, WINDOW_WIDTH, WINDOW_HEIGHT*.38, RGB16Bit(50,100,255), lpddsback);

// draw the ground
//Draw_Rectangle(0,WINDOW_HEIGHT*.38, WINDOW_WIDTH, WINDOW_HEIGHT, RGB16Bit(25,50,110), lpddsback);

//Draw_BOB16(&background, lpddsback);

// read keyboard and other devices here
DInput_Read_Keyboard();

// game logic here...

// reset the render list
Reset_RENDERLIST4DV2(&rend_list);

if (keyboard_state[DIK_O]) 
   {
   if (++alpha >= NUM_ALPHA_LEVELS)
       alpha = 0;
   
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// modes and lights

// wireframe mode
if (keyboard_state[DIK_W]) 
   {
   // toggle wireframe mode
   if (++wireframe_mode > 1)
       wireframe_mode=0;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// backface removal
if (keyboard_state[DIK_B])
   {
   // toggle backface removal
   backface_mode = -backface_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// lighting
if (keyboard_state[DIK_L])
   {
   // toggle lighting engine completely
   lighting_mode = -lighting_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// toggle ambient light
if (keyboard_state[DIK_A])
   {
   // toggle ambient light
   if (lights2[AMBIENT_LIGHT_INDEX].state == LIGHTV2_STATE_ON)
      lights2[AMBIENT_LIGHT_INDEX].state = LIGHTV2_STATE_OFF;
   else
      lights2[AMBIENT_LIGHT_INDEX].state = LIGHTV2_STATE_ON;

   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// toggle infinite light
if (keyboard_state[DIK_I])
   {
   // toggle ambient light
   if (lights2[INFINITE_LIGHT_INDEX].state == LIGHTV2_STATE_ON)
      lights2[INFINITE_LIGHT_INDEX].state = LIGHTV2_STATE_OFF;
   else
      lights2[INFINITE_LIGHT_INDEX].state = LIGHTV2_STATE_ON;

   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// toggle point light
if (keyboard_state[DIK_P])
   {
   // toggle point light
   if (lights2[POINT_LIGHT_INDEX].state == LIGHTV2_STATE_ON)
      lights2[POINT_LIGHT_INDEX].state = LIGHTV2_STATE_OFF;
   else
      lights2[POINT_LIGHT_INDEX].state = LIGHTV2_STATE_ON;

   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// help menu
if (keyboard_state[DIK_H])
   {
   // toggle help menu 
   help_mode = -help_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// z-sorting
if (keyboard_state[DIK_S])
   {
   // toggle z sorting
   zsort_mode = -zsort_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// z buffer
if (keyboard_state[DIK_Z])
   {
   // toggle z buffer
   z_buffer_mode = -z_buffer_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// display mode
if (keyboard_state[DIK_D])
   {
   // toggle display mode
   display_mode = -display_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if


// seafloor mode
if (keyboard_state[DIK_T])
   {
   // toggle the seafloor mode
   seafloor_mode = -seafloor_mode;
   Wait_Clock(100); // wait, so keyboard doesn't bounce
   } // end if

// PLAYER CONTROL AREA ////////////////////////////////////////////////////////////

// filter player control if not in PLAY state
if (game_state==GAME_STATE_PLAY)
{
// forward/backward
if (keyboard_state[DIK_UP] && player_state >= JETSKI_START)
   {
   // test for acceleration 
   if (cam_speed == 0)
      {
      DSound_Play(jetski_accel_sound_id);
      DSound_Set_Volume(jetski_accel_sound_id, 100);

      } // end if
      
   // move forward
   if ( (cam_speed+=1) > MAX_SPEED) 
        cam_speed = MAX_SPEED;

   } // end if

/*
else
if (keyboard_state[DIK_DOWN])
   {
   // move backward
   if ((cam_speed-=1) < -MAX_SPEED) cam_speed = -MAX_SPEED;
   } // end if
*/

// rotate around y axis or yaw
if (keyboard_state[DIK_RIGHT])
   {
   cam.dir.y+=5;