// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
//	Game completion, final screen animation.
//
//-----------------------------------------------------------------------------


static const char
rcsid[] = "$Id: f_finale.c,v 1.5 1997/02/03 21:26:34 b1 Exp $";

#include <ctype.h>

// Functions.
#include "i_system.h"
#include "i_video.h"
#include "m_swap.h"
#include "z_zone.h"
#include "v_video.h"
#include "w_wad.h"
#include "s_sound.h"

// Data.
#include "dstrings.h"
#include "sounds.h"

#include "doomstat.h"
#include "r_state.h"

// ?
//#include "doomstat.h"
//#include "r_local.h"
//#include "f_finale.h"

// Stage of animation:
//  0 = text, 1 = art screen, 2 = character cast
int		finalestage;

int		finalecount;

#define	TEXTSPEED	3
#define	TEXTWAIT	250

char*	e1text = E1TEXT;
char*	e2text = E2TEXT;
char*	e3text = E3TEXT;
char*	e4text = E4TEXT;

char*	c1text = C1TEXT;
char*	c2text = C2TEXT;
char*	c3text = C3TEXT;
char*	c4text = C4TEXT;
char*	c5text = C5TEXT;
char*	c6text = C6TEXT;

char*	p1text = P1TEXT;
char*	p2text = P2TEXT;
char*	p3text = P3TEXT;
char*	p4text = P4TEXT;
char*	p5text = P5TEXT;
char*	p6text = P6TEXT;

char*	t1text = T1TEXT;
char*	t2text = T2TEXT;
char*	t3text = T3TEXT;
char*	t4text = T4TEXT;
char*	t5text = T5TEXT;
char*	t6text = T6TEXT;

char*	finaletext;
char*	finaleflat;

void	F_StartCast (void);
void	F_CastTicker (void);
boolean F_CastResponder (event_t *ev);
void	F_CastDrawer (void);

//
// F_StartFinale
//
void F_StartFinale (void)
{
    gameaction = ga_nothing;
    gamestate = GS_FINALE;
    viewactive = false;
    automapactive = false;

    // Okay - IWAD dependend stuff.
    // This has been changed severly, and
    //  some stuff might have changed in the process.
    switch ( gamemode )
    {

      // DOOM 1 - E1, E3 or E4, but each nine missions
      case shareware:
      case registered:
      case retail:
      {
	S_ChangeMusic(mus_victor, true);
	
	switch (gameepisode)
	{
	  case 1:
	    finaleflat = "FLOOR4_8";
	    finaletext = e1text;
	    break;
	  case 2:
	    finaleflat = "SFLR6_1";
	    finaletext = e2text;
	    break;
	  case 3:
	    finaleflat = "MFLR8_4";
	    finaletext = e3text;
	    break;
	  case 4:
	    finaleflat = "MFLR8_3";
	    finaletext = e4text;
	    break;
	  default:
	    // Ouch.
	    break;
	}
	break;
      }
      
      // DOOM II and missions packs with E1, M34
      case commercial:
      {
	  S_ChangeMusic(mus_read_m, true);

	  switch (gamemap)
	  {
	    case 6:
	      finaleflat = "SLIME16";
	      finaletext = c1text;
	      break;
	    case 11:
	      finaleflat = "RROCK14";
	      finaletext = c2text;
	      break;
	    case 20:
	      finaleflat = "RROCK07";
	      finaletext = c3text;
	      break;
	    case 30:
	      finaleflat = "RROCK17";
	      finaletext = c4text;
	      break;
	    case 15:
	      finaleflat = "RROCK13";
	      finaletext = c5text;
	      break;
	    case 31:
	      finaleflat = "RROCK19";
	      finaletext = c6text;
	      break;
	    default:
	      // Ouch.
	      break;
	  }
	  break;
      }	

   
      // Indeterminate.
      default:
	S_ChangeMusic(mus_read_m, true);
	finaleflat = "F_SKY1"; // Not used anywhere else.
	finaletext = c1text;  // FIXME - other text, music?
	break;
    }
    
    finalestage = 0;
    finalecount = 0;
	
}



boolean F_Responder (event_t *event)
{
    if (finalestage == 2)
	return F_CastResponder (event);
	
    return false;
}


//
// F_Ticker
//
void F_Ticker (void)
{
    int		i;
    
    // check for skipping
    if ( (gamemode == commercial)
      && ( finalecount > 50) )
    {
      // go on to the next level
      for (i=0 ; i<MAXPLAYERS ; i++)
	if (players[i].cmd.buttons)
	  break;
				
      if (i < MAXPLAYERS)
      {	
	if (gamemap == 30)
	  F_StartCast ();
	else
	  gameaction = ga_worlddone;
      }
    }
    
    // advance animation
    finalecount++;
	
    if (finalestage == 2)
    {
	F_CastTicker ();
	return;
    }
	
    if ( gamemode == commercial)
	return;
		
    if (!finalestage && finalecount>strlen (finaletext)*TEXTSPEED + TEXTWAIT)
    {
	finalecount = 0;
	finalestage = 1;
	wipegamestate = -1;		// force a wipe
	if (gameepisode == 3)
	    S_StartMusic (mus_bunny);
    }
}



//
// F_TextWrite
//

#include "hu_stuff.h"
extern	patch_t *hu_font[HU_FONTSIZE];


void F_TextWrite (void)
{
    byte*	src;
    byte*	dest;
    
    int		x,y,w;
    int		count;
    char*	ch;
    int		c;
    int		cx;
    int		cy;
    
    // erase the entire screen to a tiled background
    src = W_CacheLumpName ( finaleflat , PU_CACHE);
    dest = screens[0];
	
    for (y=0 ; y<SCREENHEIGHT ; y++)
    {
	for (x=0 ; x<SCREENWIDTH/64 ; x++)
	{
	    memcpy (dest, src+((y&63)<<6), 64);
	    dest += 64;
	}
	if (SCREENWIDTH&63)
	{
	    memcpy (dest, src+((y&63)<<6), SCREENWIDTH&63);
	    dest += (SCREENWIDTH&63);
	}
    }

    // draw some of the text onto the screen
    cx = 10;
    cy = 10;
    ch = finaletext;
	
    count = (finalecount - 10)/TEXTSPEED;
    if (count < 0)
	count = 0;
    for ( ; count ; count-- )
    {
	c = *ch++;
	if (!c)
	    break;
	if (c == '\n')
	{
	    cx = 10;
	    cy += 11;
	    continue;
	}
		
	c = toupper(c) - HU_FONTSTART;
	if (c < 0 || c> HU_FONTSIZE)
	{
	    cx += 4;
	    continue;
	}
		
	w = SWAPSHORT (hu_font[c]->width);
	if (cx+w > SCREENWIDTH)
	    break;
	V_DrawPatchInDirect(cx, cy, 0, hu_font[c]);
	cx+=w;
    }
	
    I_MarkRect (0, 0, SCREENWIDTH, SCREENHEIGHT);
    
}

//
// Final DOOM 2 animation
// Casting by id Software.
//   in order of appearance
//
typedef struct
{
    char		*name;
    mobjtype_t	type;
} castinfo_t;

castinfo_t	castorder[] = {
    {CC_ZOMBIE, MT_POSSESSED},
    {CC_SHOTGUN, MT_SHOTGUY},
    {CC_HEAVY, MT_CHAINGUY},
    {CC_IMP, MT_TROOP},
    {CC_DEMON, MT_SERGEANT},
    {CC_LOST, MT_SKULL},
    {CC_CACO, MT_HEAD},
    {CC_HELL, MT_KNIGHT},
    {CC_BARON, MT_BRUISER},
    {CC_ARACH, MT_BABY},
    {CC_PAIN, MT_PAIN},
    {CC_REVEN, MT_UNDEAD},
    {CC_MANCU, MT_FATSO},
    {CC_ARCH, MT_VILE},
    {CC_SPIDER, MT_SPIDER},
    {CC_CYBER, MT_CYBORG},
    {CC_HERO, MT_PLAYER},

    {NULL,0}
};

int		castnum;
int		casttics;
state_t*	caststate;
boolean		castdeath;
int		castframes;
int		castonmelee;
boolean		castattacking;


//
// F_StartCast
//
extern	gamestate_t     wipegamestate;


void F_StartCast (void)
{
    wipegamestate = -1;		// force a screen wipe
    castnum = 0;
    caststate = &states[mobjinfo[castorder[castnum].type].seestate];
    casttics = caststate->tics;
    castdeath = false;
    finalestage = 2;	
    castframes = 0;
    castonmelee = 0;
    castattacking = false;
    S_ChangeMusic(mus_evil, true);
}


//
// F_CastTicker
//
void F_CastTicker (void)
{
    int		st;
    int		sfx;
	
    if (--casttics > 0)
	return;			// not time to change state yet
		
    if (caststate->tics == -1 || caststate->nextstate == S_NULL)
    {
	// switch from deathstate to next monster
	castnum++;
	castdeath = false;
	if (castorder[castnum].name == NULL)
	    castnum = 0;
	if (mobjinfo[castorder[castnum].type].seesound)
	    S_StartSound (NULL, mobjinfo[castorder[castnum].type].seesound);
	caststate = &states[mobjinfo[castorder[castnum].type].seestate];
	castframes = 0;
    }
    else
    {
	// just advance to next state in animation
	if (caststate == &states[S_PLAY_ATK1])
	    goto stopattack;	// Oh, gross hack!
	st = caststate->nextstate;
	caststate = &states[st];
	castframes++;
	
	// sound hacks....
	switch (st)
	{
	  case S_PLAY_ATK1:	sfx = sfx_dshtgn; break;
	  case S_POSS_ATK2:	sfx = sfx_pistol; break;
	  case S_SPOS_ATK2:	sfx = sfx_shotgn; break;
	  case S_VILE_ATK2:	sfx = sfx_vilatk; break;
	  case S_SKEL_FIST2:	sfx = sfx_skeswg; break;
	  case S_SKEL_FIST4:	sfx = sfx_skepch; break;
	  case S_SKEL_MISS2:	sfx = sfx_skeatk; break;
	  case S_FATT_ATK8:
	  case S_FATT_ATK5:
	  case S_FATT_ATK2:	sfx = sfx_firsht; break;
	  case S_CPOS_ATK2:
	  case S_CPOS_ATK3:
	  case S_CPOS_ATK4:	sfx = sfx_shotgn; break;
	  case S_TROO_ATK3:	sfx = sfx_claw; break;
	  case S_SARG_ATK2:	sfx = sfx_sgtatk; break;
	  case S_BOSS_ATK2:
	  case S_BOS2_ATK2:
	  case S_HEAD_ATK2:	sfx = sfx_firsht; break;
	  case S_SKULL_ATK2:	sfx = sfx_sklatk; break;
	  case S_SPID_ATK2:
	  case S_SPID_ATK3:	sfx = sfx_shotgn; break;
	  case S_BSPI_ATK2:	sfx = sfx_plasma; break;
	  case S_CYBER_ATK2:
	  case S_CYBER_ATK4:
	  case S_CYBER_ATK6:	sfx = sfx_rlaunc; break;
	  case S_PAIN_ATK3:	sfx = sfx_sklatk; break;
	  default: sfx = 0; break;
	}
		
	if (sfx)
	    S_StartSound (NULL, sfx);
    }
	
    if (castframes == 12)
    {
	// go into attack frame
	castattacking = true;
	if (castonmelee)
	    caststate=&states[mobjinfo[castorder[castnum].type].meleestate];
	else
	    caststate=&states[mobjinfo[castorder[castnum].type].missilestate];
	castonmelee ^= 1;
	if (caststate == &states[S_NULL])
	{
	    if (castonmelee)
		caststate=
		    &states[mobjinfo[castorder[castnum].type].meleestate];
	    else
		caststate=
		    &states[mobjinfo[castorder[castnum].type].missilestate];
	}
    }
	
    if (castattacking)
    {
	if (castframes == 24
	    ||	caststate == &states[mobjinfo[castorder[castnum].type].seestate] )
	{
	  stopattack:
	    castattacking = false;
	    castframes = 0;
	    caststate = &states[mobjinfo[castorder[castnum].type].seestate];
	}
    }
	
    casttics = caststate->tics;
    if (casttics == -1)
	casttics = 15;
}


//
// F_CastResponder
//

boolean F_CastResponder (event_t* ev)
{
    if (ev->type != ev_keydown)
	return false;
		
    if (castdeath)
	return true;			// already in dying frames
		
    // go into death frame
    castdeath = true;
    caststate = &states[mobjinfo[castorder[castnum].type].deathstate];
    casttics = caststate->tics;
    castframes = 0;
    castattacking = false;
    if (mobjinfo[castorder[castnum].type].deathsound)
	S_StartSound (NULL, mobjinfo[castorder[castnum].type].deathsound);
	
    return true;
}


void F_CastPrint (char* text)
{
    char*	ch;
    int		c;
    int		cx;
    int		w;
    int		width;
    
    // find width
    ch = text;
    width = 0;
	
    while (ch)
    {
	c = *ch++;
	if (!c)
	    break;
	c = toupper(c) - HU_FONTSTART;
	if (c < 0 || c> HU_FONTSIZE)
	{
	    width += 4;
	    continue;
	}
		
	w = SWAPSHORT (hu_font[c]->width);
	width += w;
    }
    
    // draw it
    cx = 160-width/2;
    ch = text;
    while (ch)
    {
	c = *ch++;
	if (!c)
	    break;
	c = toupper(c) - HU_FONTSTART;
	if (c < 0 || c> HU_FONTSIZE)
	{
	    cx += 4;
	    continue;
	}
		
	w = SWAPSHORT (hu_font[c]->width);
	V_DrawPatchInDirect(cx, 180, 0, hu_font[c]);
	cx+=w;
    }
	
}


//
// F_CastDrawer
//
//void V_DrawPatchFlipped (int x, int y, int scrn, patch_t *patch);

void F_CastDrawer (void)
{
    spritedef_t*	sprdef;
    spriteframe_t*	sprframe;
    int			lump;
    boolean		flip;
    patch_t*		patch;
    
    // erase the entire screen to a background
    V_DrawPatchInDirect (0,0,0, W_CacheLumpName ("BOSSBACK", PU_CACHE));

    F_CastPrint (castorder[castnum].name);
    
    // draw the current frame in the middle of the screen
    sprdef = &sprites[caststate->sprite];
    sprframe = &sprdef->spriteframes[ caststate->frame & FF_FRAMEMASK];
    lump = sprframe->lump[0];
    flip = (boolean)sprframe->flip[0];
			
    patch = W_CacheLumpNum (lump+firstspritelump, PU_CACHE);
    if (flip)
	V_DrawPatchInDirectFlipped (160,170,0,patch);
    else
	V_DrawPatchInDirect (160,170,0,patch);
}


//
// F_DrawPatchCol
//
void
F_DrawPatchCol
( int		x,
  patch_t*	patch,
  int		col )
{
    column_t*	column;
    byte*	source;
    byte*	dest;
    byte*	desttop;
    int		count;
	
    column = (column_t *)((byte *)patch + SWAPLONG(patch->columnofs[col]));
//    desttop = screens[0]+x;
    desttop = screens[0]+x+(SCREENWIDTH-320)/2+SCREENWIDTH*((SCREENHEIGHT-200)/2);

    // step through the posts in a column
    while (column->topdelta != 0xff )
    {
	source = (byte *)column + 3;
	dest = desttop + column->topdelta*SCREENWIDTH;
	count = column->length;
		
	while (count--)
	{
	    *dest = *source++;
	    dest += SCREENWIDTH;
	}
	column = (column_t *)(  (byte *)column + column->length + 4 );
    }
}


//
// F_BunnyScroll
//
void F_BunnyScroll (void)
{
    int		scrolled;
    int		x;
    patch_t*	p1;
    patch_t*	p2;
    char	name[10];
    int		stage;
    static int	laststage;
		
    p1 = W_CacheLumpName ("PFUB2", PU_LEVEL);
    p2 = W_CacheLumpName ("PFUB1", PU_LEVEL);

    scrolled = 320 - (finalecount-230)/2;
    if (scrolled > 320)
	scrolled = 320;
    if (scrolled < 0)
	scrolled = 0;

//    for ( x=0 ; x<SCREENWIDTH ; x++)
    if ((SCREENWIDTH!=320)||(SCREENHEIGHT!=200))
        memset(screens[0],2,SCREENWIDTH*SCREENHEIGHT);
    for ( x=0 ; x<320 ; x++)
    {
	if (x+scrolled < 320)
	    F_DrawPatchCol (x, p1, x+scrolled);
	else
	    F_DrawPatchCol (x, p2, x+scrolled - 320);		
    }
	
    if (finalecount < 1130)
	return;
    if (finalecount < 1180)
    {
	V_DrawPatchInDirect ((320-13*8)/2,
		     (200-8*8)/2,0, W_CacheLumpName ("END0",PU_CACHE));
	laststage = 0;
	return;
    }
	
    stage = (finalecount-1180) / 5;
    if (stage > 6)
	stage = 6;
    if (stage > laststage)
    {
	S_StartSound (NULL, sfx_pistol);
	laststage = stage;
    }
	
    sprintf (name,"END%i",stage);
    V_DrawPatchInDirect ((320-13*8)/2, (200-8*8)/2,0, W_CacheLumpName (name,PU_CACHE));

    I_MarkRect (0, 0, SCREENWIDTH, SCREENHEIGHT);
}


//
// F_Drawer
//
void F_Drawer (void)
{
    if (finalestage == 2)
    {
	F_CastDrawer ();
	return;
    }

    if (!finalestage)
	F_TextWrite ();
    else
    {
	switch (gameepisode)
	{
	  case 1:
	    if ( gamemode == retail )
	      V_DrawPatchInDirect (0,0,0,
			 W_CacheLumpName("CREDIT",PU_CACHE));
	    else
	      V_DrawPatchInDirect (0,0,0,
			 W_CacheLumpName("HELP2",PU_CACHE));
	    break;
	  case 2:
	    V_DrawPatchInDirect(0,0,0,
			W_CacheLumpName("VICTORY2",PU_CACHE));
	    break;
	  case 3:
	    F_BunnyScroll ();
	    break;
	  case 4:
	    V_DrawPatchInDirect (0,0,0,
			 W_CacheLumpName("ENDPIC",PU_CACHE));
	    break;
	}
    }
			
}
