am_map.c

游戏类程序源代码---WinDoom 3D源程序.zip

    automapactive = true;
	 // DQ removed fb - wanted buffer to be a parameter, not global
//    fb = RenderBuffer/*DQ screens[0]*/;

    f_oldloc.x = MAXINT;
    amclock = 0;
    lightlev = 0;

    m_paninc.x = m_paninc.y = 0;
    ftom_zoommul = FRACUNIT;
    mtof_zoommul = FRACUNIT;

    m_w = FTOM(f_w);
    m_h = FTOM(f_h);

//    sprintf(MsgText, "f_w = %d, f_h = %d, m_w = %d, m_h = %d\n", f_w, f_h, m_w, m_h);
//    WriteDebug(MsgText);

    // find player to center on initially
    if (!playeringame[pnum = consoleplayer])
	for (pnum=0;pnum<MAXPLAYERS;pnum++)
	    if (playeringame[pnum])
		break;
  
    plr = &players[pnum];
    m_x = plr->mo->x - m_w/2;
    m_y = plr->mo->y - m_h/2;
    AM_changeWindowLoc();

    // for saving & restoring
    old_m_x = m_x;
    old_m_y = m_y;
    old_m_w = m_w;
    old_m_h = m_h;

    // inform the status bar of the change
    ST_Responder(&st_notify);

}

//
// 
//
void AM_loadPics(void)
{
    int i;
    char namebuf[9];
  
    for (i=0;i<10;i++)
    {
	sprintf(namebuf, "AMMNUM%d", i);
	marknums[i] = W_CacheLumpName(namebuf, PU_STATIC);
    }

}

void AM_unloadPics(void)
{
    int i;
  
    for (i=0;i<10;i++)
	Z_ChangeTag(marknums[i], PU_CACHE);

}

void AM_clearMarks(void)
{
    int i;

    for (i=0;i<AM_NUMMARKPOINTS;i++)
	markpoints[i].x = -1; // means empty
    markpointnum = 0;
}

//
// should be called at the start of every level
// right now, i figure it out myself
//
void AM_LevelInit(void)
{
    leveljuststarted = 0;

    f_x = f_y = 0;
    f_w = SCREENWIDTH;
    f_h = (SCREENHEIGHT - 32);
//    f_w = finit_width;
//    f_h = finit_height;

    AM_clearMarks();

    AM_findMinMaxBoundaries();
    scale_mtof = FixedDiv(min_scale_mtof, (int) (0.7*FRACUNIT));
    if (scale_mtof > max_scale_mtof)
        scale_mtof = min_scale_mtof;
    scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
//    sprintf(MsgText, "scale_mtof %d, scale_ftom %d\n", scale_mtof, scale_ftom);
//    WriteDebug(MsgText);
}




//
//
//
void AM_Stop (void)
{
    static event_t st_notify = { 0, ev_keyup, AM_MSGEXITED };

    AM_unloadPics();
    automapactive = false;
    ST_Responder(&st_notify);
    stopped = true;
}

//
//
//
void AM_Start (PBUFFER RenderBuffer)	// DQ
//void AM_Start (void)
{
    static int lastlevel = -1, lastepisode = -1;

    if (!stopped) AM_Stop();
    stopped = false;
    if (lastlevel != gamemap || lastepisode != gameepisode)
    {
	AM_LevelInit();
	lastlevel = gamemap;
	lastepisode = gameepisode;
    }
    AM_initVariables();
    AM_loadPics();
}

//
// set the window scale to the maximum size
//
void AM_minOutWindowScale(void)
{
    scale_mtof = min_scale_mtof;
    scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
    AM_activateNewScale();
}

//
// set the window scale to the minimum size
//
void AM_maxOutWindowScale(void)
{
    scale_mtof = max_scale_mtof;
    scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
    AM_activateNewScale();
}


//
// Handle events (user inputs) in automap mode
//
boolean
AM_Responder
( event_t*	ev,
  PBUFFER RenderBuffer) // DQ
//boolean
//AM_Responder
//( event_t*	ev )
{

    int rc;
    static int cheatstate=0;
    static int bigstate=0;
    static char buffer[20];

    rc = false;

    if (!automapactive)
    {
	if (ev->type == ev_keydown && ev->data1 == AM_STARTKEY)
	{
	    AM_Start (RenderBuffer/*DQ*/);
	    viewactive = false;
	    rc = true;
	}
    }

    else if (ev->type == ev_keydown)
    {

	rc = true;
	switch(ev->data1)
	{
	  case AM_PANRIGHTKEY: // pan right
	    if (!followplayer) m_paninc.x = FTOM(F_PANINC);
	    else rc = false;
	    break;
	  case AM_PANLEFTKEY: // pan left
	    if (!followplayer) m_paninc.x = -FTOM(F_PANINC);
	    else rc = false;
	    break;
	  case AM_PANUPKEY: // pan up
	    if (!followplayer) m_paninc.y = FTOM(F_PANINC);
	    else rc = false;
	    break;
	  case AM_PANDOWNKEY: // pan down
	    if (!followplayer) m_paninc.y = -FTOM(F_PANINC);
	    else rc = false;
	    break;
	  case AM_ZOOMOUTKEY: // zoom out
	    mtof_zoommul = M_ZOOMOUT;
	    ftom_zoommul = M_ZOOMIN;
	    break;
	  case AM_ZOOMINKEY: // zoom in
	    mtof_zoommul = M_ZOOMIN;
	    ftom_zoommul = M_ZOOMOUT;
	    break;
	  case AM_ENDKEY:
	    bigstate = 0;
	    viewactive = true;
	    AM_Stop ();
	    break;
	  case AM_GOBIGKEY:
	    bigstate = !bigstate;
	    if (bigstate)
	    {
		AM_saveScaleAndLoc();
		AM_minOutWindowScale();
	    }
	    else AM_restoreScaleAndLoc();
	    break;
	  case AM_FOLLOWKEY:
	    followplayer = !followplayer;
	    f_oldloc.x = MAXINT;
	    plr->message = followplayer ? AMSTR_FOLLOWON : AMSTR_FOLLOWOFF;
	    break;
	  case AM_GRIDKEY:
	    grid = !grid;
	    plr->message = grid ? AMSTR_GRIDON : AMSTR_GRIDOFF;
	    break;
	  case AM_MARKKEY:
	    sprintf(buffer, "%s %d", AMSTR_MARKEDSPOT, markpointnum);
	    plr->message = buffer;
	    AM_addMark();
	    break;
	  case AM_CLEARMARKKEY:
	    AM_clearMarks();
	    plr->message = AMSTR_MARKSCLEARED;
	    break;
	  default:
	    cheatstate=0;
	    rc = false;
	}
	if (!deathmatch && cht_CheckCheat(&cheat_amap, ev->data1))
	{
	    rc = false;
	    cheating = (cheating+1) % 3;
	}
    }

    else if (ev->type == ev_keyup)
    {
	rc = false;
	switch (ev->data1)
	{
	  case AM_PANRIGHTKEY:
	    if (!followplayer) m_paninc.x = 0;
	    break;
	  case AM_PANLEFTKEY:
	    if (!followplayer) m_paninc.x = 0;
	    break;
	  case AM_PANUPKEY:
	    if (!followplayer) m_paninc.y = 0;
	    break;
	  case AM_PANDOWNKEY:
	    if (!followplayer) m_paninc.y = 0;
	    break;
	  case AM_ZOOMOUTKEY:
	  case AM_ZOOMINKEY:
	    mtof_zoommul = FRACUNIT;
	    ftom_zoommul = FRACUNIT;
	    break;
	}
    }

    return rc;

}


//
// Zooming
//
void AM_changeWindowScale(void)
{

    // Change the scaling multipliers
    scale_mtof = FixedMul(scale_mtof, mtof_zoommul);
    scale_ftom = FixedDiv(FRACUNIT, scale_mtof);

    if (scale_mtof < min_scale_mtof)
	AM_minOutWindowScale();
    else if (scale_mtof > max_scale_mtof)
	AM_maxOutWindowScale();
    else
	AM_activateNewScale();
}


//
//
//
void AM_doFollowPlayer(void)
{

    if (f_oldloc.x != plr->mo->x || f_oldloc.y != plr->mo->y)
    {
	m_x = FTOM(MTOF(plr->mo->x)) - m_w/2;
	m_y = FTOM(MTOF(plr->mo->y)) - m_h/2;
	m_x2 = m_x + m_w;
	m_y2 = m_y + m_h;
	f_oldloc.x = plr->mo->x;
	f_oldloc.y = plr->mo->y;

	//  m_x = FTOM(MTOF(plr->mo->x - m_w/2));
	//  m_y = FTOM(MTOF(plr->mo->y - m_h/2));
	//  m_x = plr->mo->x - m_w/2;
	//  m_y = plr->mo->y - m_h/2;

    }

}

//
//
//
void AM_updateLightLev(void)
{
    static nexttic = 0;
    //static int litelevels[] = { 0, 3, 5, 6, 6, 7, 7, 7 };
    static int litelevels[] = { 0, 4, 7, 10, 12, 14, 15, 15 };
    static int litelevelscnt = 0;
   
    // Change light level
    if (amclock>nexttic)
    {
	lightlev = litelevels[litelevelscnt++];
	if (litelevelscnt == sizeof(litelevels)/sizeof(int)) litelevelscnt = 0;
	nexttic = amclock + 6 - (amclock % 6);
    }

}


//
// Updates on Game Tick
//
void AM_Ticker (void)
{

    if (!automapactive)
	return;

    amclock++;

    if (followplayer)
	AM_doFollowPlayer();

    // Change the zoom if necessary
    if (ftom_zoommul != FRACUNIT)
	AM_changeWindowScale();

    // Change x,y location
    if (m_paninc.x || m_paninc.y)
	AM_changeWindowLoc();

    // Update light level
    // AM_updateLightLev();

}


//
// Clear automap frame buffer.
//
void AM_clearFB(int color, PBUFFER RenderBuffer)
//void AM_clearFB(int color)
{
	int y;

	for (y = 0; y < f_h; y++)
	{
		memset(RenderBuffer->Buffer + RenderBuffer->YLookup[y], color, f_w);
	}
	//memset(fb, color, f_w*f_h);
}


//
// Automap clipping of lines.
//
// Based on Cohen-Sutherland clipping algorithm but with a slightly
// faster reject and precalculated slopes.  If the speed is needed,
// use a hash algorithm to handle  the common cases.
//
boolean AM_clipMline( mline_t *ml, fline_t *fl )
   {
    enum
      {
       LEFT   = 1,
       RIGHT  = 2,
       BOTTOM = 4,
       TOP    = 8
      };
    
    register	outcode1 = 0;
    register	outcode2 = 0;
    register	outside;
    
    fpoint_t	tmp;
    int		dx;
    int		dy;

//    sprintf(MsgText, "Testing line : ml->a.x,ml->a.y %d,%d to ml->b.x,ml->b.y %d,%d\n", ml->a.x>>FRACBITS,ml->a.y>>FRACBITS,ml->b.x>>FRACBITS,ml->b.y>>FRACBITS);
//    WriteDebug(MsgText);
    
#define DOOUTCODE(oc, mx, my) \
    (oc) = 0; \
    if ((my) < 0) (oc) |= TOP; \
    else if ((my) >= f_h) (oc) |= BOTTOM; \
    if ((mx) < 0) (oc) |= LEFT; \
    else if ((mx) >= f_w) (oc) |= RIGHT;

    
    // do trivial rejects and outcodes
    if (ml->a.y > m_y2)
	outcode1 = TOP;
    else if (ml->a.y < m_y)
	outcode1 = BOTTOM;

    if (ml->b.y > m_y2)
	outcode2 = TOP;
    else if (ml->b.y < m_y)
	outcode2 = BOTTOM;
    
    if (outcode1 & outcode2)
	return false; // trivially outside

    if (ml->a.x < m_x)
	outcode1 |= LEFT;
    else if (ml->a.x > m_x2)
	outcode1 |= RIGHT;
    
    if (ml->b.x < m_x)
	outcode2 |= LEFT;
    else if (ml->b.x > m_x2)
	outcode2 |= RIGHT;
    
    if (outcode1 & outcode2)
	return false; // trivially outside

    // transform to frame-buffer coordinates.
    fl->a.x = CXMTOF(ml->a.x);
    fl->a.y = CYMTOF(ml->a.y);
    fl->b.x = CXMTOF(ml->b.x);
    fl->b.y = CYMTOF(ml->b.y);

    DOOUTCODE(outcode1, fl->a.x, fl->a.y);
    DOOUTCODE(outcode2, fl->b.x, fl->b.y);

    if (outcode1 & outcode2)
	return false;

    while (outcode1 | outcode2)
    {