From 3f59fc8b771625aca9c3aefe03cf1038d8461963 Mon Sep 17 00:00:00 2001
From: Franklin Wei <git@fwei.tk>
Date: Sun, 7 Jul 2019 22:00:20 -0400
Subject: Wolfenstein 3-D!

This is a port of Wolf4SDL, which is derived from the original id
software source release. The port runs on top of the SDL plugin
runtime and is loaded as an overlay.

Licensing of the game code is not an issue, as discussed below
(essentially, the Debian project treats Wolf4SDL as GPLv2, with an
email from John Carmack backing it up):

  http://forums.rockbox.org/index.php?topic=52872

Included is a copy of MAME's Yamaha OPL sound chip emulator
(fmopl_gpl.c).  This file was not part of the original Wolf4SDL source
(which includes a non-GPL'd version), but was rather rebased from from
a later MAME source which had been relicensed to GPLv2.

Change-Id: I64c2ba035e0be7e2f49252f40640641416613439
---
 apps/plugins/sdl/progs/wolf3d/wl_text.c | 859 ++++++++++++++++++++++++++++++++
 1 file changed, 859 insertions(+)
 create mode 100644 apps/plugins/sdl/progs/wolf3d/wl_text.c

(limited to 'apps/plugins/sdl/progs/wolf3d/wl_text.c')

diff --git a/apps/plugins/sdl/progs/wolf3d/wl_text.c b/apps/plugins/sdl/progs/wolf3d/wl_text.c
new file mode 100644
index 0000000000..d51117b836
--- /dev/null
+++ b/apps/plugins/sdl/progs/wolf3d/wl_text.c
@@ -0,0 +1,859 @@
+// WL_TEXT.C
+
+#include "wl_def.h"
+#pragma hdrstop
+
+/*
+=============================================================================
+
+TEXT FORMATTING COMMANDS
+------------------------
+^C<hex digit>           Change text color
+^E[enter]               End of layout (all pages)
+^G<y>,<x>,<pic>[enter]  Draw a graphic and push margins
+^P[enter]               start new page, must be the first chars in a layout
+^L<x>,<y>[ENTER]        Locate to a specific spot, x in pixels, y in lines
+
+=============================================================================
+*/
+
+/*
+=============================================================================
+
+                                                 LOCAL CONSTANTS
+
+=============================================================================
+*/
+
+#ifndef SPEAR
+
+#define BACKCOLOR       0x11
+
+
+#define WORDLIMIT       80
+#define FONTHEIGHT      10
+#define TOPMARGIN       16
+#define BOTTOMMARGIN    32
+#define LEFTMARGIN      16
+#define RIGHTMARGIN     16
+#define PICMARGIN       8
+#define TEXTROWS        ((200-TOPMARGIN-BOTTOMMARGIN)/FONTHEIGHT)
+#define SPACEWIDTH      7
+#define SCREENPIXWIDTH  320
+#define SCREENMID       (SCREENPIXWIDTH/2)
+
+/*
+=============================================================================
+
+                                LOCAL VARIABLES
+
+=============================================================================
+*/
+
+static int pagenum;
+static int numpages;
+
+static unsigned leftmargin[TEXTROWS];
+static unsigned rightmargin[TEXTROWS];
+static char*    text;
+static unsigned rowon;
+
+static int     picx;
+static int     picy;
+static int     picnum;
+static int     picdelay;
+static boolean layoutdone;
+
+//===========================================================================
+
+#ifndef JAPAN
+/*
+=====================
+=
+= RipToEOL
+=
+=====================
+*/
+
+void RipToEOL (void)
+{
+    while (*text++ != '\n')         // scan to end of line
+        ;
+}
+
+
+/*
+=====================
+=
+= ParseNumber
+=
+=====================
+*/
+
+int ParseNumber (void)
+{
+    char  ch;
+    char  num[80];
+    char *numptr;
+
+    //
+    // scan until a number is found
+    //
+    ch = *text;
+    while (ch < '0' || ch >'9')
+        ch = *++text;
+
+    //
+    // copy the number out
+    //
+    numptr = num;
+    do
+    {
+        *numptr++ = ch;
+        ch = *++text;
+    } while (ch >= '0' && ch <= '9');
+    *numptr = 0;
+
+    return atoi (num);
+}
+
+
+
+/*
+=====================
+=
+= ParsePicCommand
+=
+= Call with text pointing just after a ^P
+= Upon exit text points to the start of next line
+=
+=====================
+*/
+
+void ParsePicCommand (void)
+{
+    picy=ParseNumber();
+    picx=ParseNumber();
+    picnum=ParseNumber();
+    RipToEOL ();
+}
+
+
+void ParseTimedCommand (void)
+{
+    picy=ParseNumber();
+    picx=ParseNumber();
+    picnum=ParseNumber();
+    picdelay=ParseNumber();
+    RipToEOL ();
+}
+
+
+/*
+=====================
+=
+= TimedPicCommand
+=
+= Call with text pointing just after a ^P
+= Upon exit text points to the start of next line
+=
+=====================
+*/
+
+void TimedPicCommand (void)
+{
+    ParseTimedCommand ();
+
+    //
+    // update the screen, and wait for time delay
+    //
+    VW_UpdateScreen ();
+
+    //
+    // wait for time
+    //
+    Delay(picdelay);
+
+    //
+    // draw pic
+    //
+    VWB_DrawPic (picx&~7,picy,picnum);
+}
+
+
+/*
+=====================
+=
+= HandleCommand
+=
+=====================
+*/
+
+void HandleCommand (void)
+{
+    int     i,margin,top,bottom;
+    int     picwidth,picheight,picmid;
+
+    switch (toupper(*++text))
+    {
+        case 'B':
+            picy=ParseNumber();
+            picx=ParseNumber();
+            picwidth=ParseNumber();
+            picheight=ParseNumber();
+            VWB_Bar(picx,picy,picwidth,picheight,BACKCOLOR);
+            RipToEOL();
+            break;
+        case ';':               // comment
+            RipToEOL();
+            break;
+        case 'P':               // ^P is start of next page, ^E is end of file
+        case 'E':
+            layoutdone = true;
+            text--;             // back up to the '^'
+            break;
+
+        case 'C':               // ^c<hex digit> changes text color
+            i = toupper(*++text);
+            if (i>='0' && i<='9')
+                fontcolor = i-'0';
+            else if (i>='A' && i<='F')
+                fontcolor = i-'A'+10;
+
+            fontcolor *= 16;
+            i = toupper(*++text);
+            if (i>='0' && i<='9')
+                fontcolor += i-'0';
+            else if (i>='A' && i<='F')
+                fontcolor += i-'A'+10;
+            text++;
+            break;
+
+        case '>':
+            px = 160;
+            text++;
+            break;
+
+        case 'L':
+            py=ParseNumber();
+            rowon = (py-TOPMARGIN)/FONTHEIGHT;
+            py = TOPMARGIN+rowon*FONTHEIGHT;
+            px=ParseNumber();
+            while (*text++ != '\n')         // scan to end of line
+                ;
+            break;
+
+        case 'T':               // ^Tyyy,xxx,ppp,ttt waits ttt tics, then draws pic
+            TimedPicCommand ();
+            break;
+
+        case 'G':               // ^Gyyy,xxx,ppp draws graphic
+            ParsePicCommand ();
+            VWB_DrawPic (picx&~7,picy,picnum);
+            picwidth = pictable[picnum-STARTPICS].width;
+            picheight = pictable[picnum-STARTPICS].height;
+            //
+            // adjust margins
+            //
+            picmid = picx + picwidth/2;
+            if (picmid > SCREENMID)
+                margin = picx-PICMARGIN;                        // new right margin
+            else
+                margin = picx+picwidth+PICMARGIN;       // new left margin
+
+            top = (picy-TOPMARGIN)/FONTHEIGHT;
+            if (top<0)
+                top = 0;
+            bottom = (picy+picheight-TOPMARGIN)/FONTHEIGHT;
+            if (bottom>=TEXTROWS)
+                bottom = TEXTROWS-1;
+
+            for (i=top;i<=bottom;i++)
+                if (picmid > SCREENMID)
+                    rightmargin[i] = margin;
+                else
+                    leftmargin[i] = margin;
+
+            //
+            // adjust this line if needed
+            //
+            if (px < (int) leftmargin[rowon])
+                px = leftmargin[rowon];
+            break;
+    }
+}
+
+
+/*
+=====================
+=
+= NewLine
+=
+=====================
+*/
+
+void NewLine (void)
+{
+    char    ch;
+
+    if (++rowon == TEXTROWS)
+    {
+        //
+        // overflowed the page, so skip until next page break
+        //
+        layoutdone = true;
+        do
+        {
+            if (*text == '^')
+            {
+                ch = toupper(*(text+1));
+                if (ch == 'E' || ch == 'P')
+                {
+                    layoutdone = true;
+                    return;
+                }
+            }
+            text++;
+        } while (1);
+    }
+    px = leftmargin[rowon];
+    py+= FONTHEIGHT;
+}
+
+
+
+/*
+=====================
+=
+= HandleCtrls
+=
+=====================
+*/
+
+void HandleCtrls (void)
+{
+    char    ch;
+
+    ch = *text++;                   // get the character and advance
+
+    if (ch == '\n')
+    {
+        NewLine ();
+        return;
+    }
+}
+
+
+/*
+=====================
+=
+= HandleWord
+=
+=====================
+*/
+
+void HandleWord (void)
+{
+    char    wword[WORDLIMIT];
+    int     wordindex;
+    word    wwidth,wheight,newpos;
+
+
+    //
+    // copy the next word into [word]
+    //
+    wword[0] = *text++;
+    wordindex = 1;
+    while (*text>32)
+    {
+        wword[wordindex] = *text++;
+        if (++wordindex == WORDLIMIT)
+            Quit ("PageLayout: Word limit exceeded");
+    }
+    wword[wordindex] = 0;            // stick a null at end for C
+
+    //
+    // see if it fits on this line
+    //
+    VW_MeasurePropString (wword,&wwidth,&wheight);
+
+    while (px+wwidth > (int) rightmargin[rowon])
+    {
+        NewLine ();
+        if (layoutdone)
+            return;         // overflowed page
+    }
+
+    //
+    // print it
+    //
+    newpos = px+wwidth;
+    VWB_DrawPropString (wword);
+    px = newpos;
+
+    //
+    // suck up any extra spaces
+    //
+    while (*text == ' ')
+    {
+        px += SPACEWIDTH;
+        text++;
+    }
+}
+
+/*
+=====================
+=
+= PageLayout
+=
+= Clears the screen, draws the pics on the page, and word wraps the text.
+= Returns a pointer to the terminating command
+=
+=====================
+*/
+
+void PageLayout (boolean shownumber)
+{
+    int     i,oldfontcolor;
+    char    ch;
+
+    oldfontcolor = fontcolor;
+
+    fontcolor = 0;
+
+    //
+    // clear the screen
+    //
+    VWB_Bar (0,0,320,200,BACKCOLOR);
+    VWB_DrawPic (0,0,H_TOPWINDOWPIC);
+    VWB_DrawPic (0,8,H_LEFTWINDOWPIC);
+    VWB_DrawPic (312,8,H_RIGHTWINDOWPIC);
+    VWB_DrawPic (8,176,H_BOTTOMINFOPIC);
+
+
+    for (i=0; i<TEXTROWS; i++)
+    {
+        leftmargin[i] = LEFTMARGIN;
+        rightmargin[i] = SCREENPIXWIDTH-RIGHTMARGIN;
+    }
+
+    px = LEFTMARGIN;
+    py = TOPMARGIN;
+    rowon = 0;
+    layoutdone = false;
+
+    //
+    // make sure we are starting layout text (^P first command)
+    //
+    while (*text <= 32)
+        text++;
+
+    if (*text != '^' || toupper(*++text) != 'P')
+        Quit ("PageLayout: Text not headed with ^P");
+
+    while (*text++ != '\n')
+        ;
+
+
+    //
+    // process text stream
+    //
+    do
+    {
+        ch = *text;
+
+        if (ch == '^')
+            HandleCommand ();
+        else
+            if (ch == 9)
+            {
+                px = (px+8)&0xf8;
+                text++;
+            }
+            else if (ch <= 32)
+                HandleCtrls ();
+            else
+                HandleWord ();
+
+    } while (!layoutdone);
+
+    pagenum++;
+
+    if (shownumber)
+    {
+#ifdef SPANISH
+        sprintf(str, "Hoja %d de %d", pagenum, numpages);
+        px = 208;
+#else
+        sprintf(str, "pg %d of %d", pagenum, numpages);
+        px = 213;
+#endif
+        py = 183;
+        fontcolor = 0x4f;                          //12^BACKCOLOR;
+
+        VWB_DrawPropString (str);
+    }
+
+    fontcolor = oldfontcolor;
+}
+
+//===========================================================================
+
+/*
+=====================
+=
+= BackPage
+=
+= Scans for a previous ^P
+=
+=====================
+*/
+
+void BackPage (void)
+{
+    pagenum--;
+    do
+    {
+        text--;
+        if (*text == '^' && toupper(*(text+1)) == 'P')
+            return;
+    } while (1);
+}
+
+
+//===========================================================================
+
+
+/*
+=====================
+=
+= CacheLayoutGraphics
+=
+= Scans an entire layout file (until a ^E) marking all graphics used, and
+= counting pages, then caches the graphics in
+=
+=====================
+*/
+void CacheLayoutGraphics (void)
+{
+    char    *bombpoint, *textstart;
+    char    ch;
+
+    textstart = text;
+    bombpoint = text+30000;
+    numpages = pagenum = 0;
+
+    do
+    {
+        if (*text == '^')
+        {
+            ch = toupper(*++text);
+            if (ch == 'P')          // start of a page
+                numpages++;
+            if (ch == 'E')          // end of file, so load graphics and return
+            {
+#ifndef SPEAR
+                CA_CacheGrChunk(H_TOPWINDOWPIC);
+                CA_CacheGrChunk(H_LEFTWINDOWPIC);
+                CA_CacheGrChunk(H_RIGHTWINDOWPIC);
+                CA_CacheGrChunk(H_BOTTOMINFOPIC);
+#endif
+                //                              CA_CacheMarks ();
+                text = textstart;
+                return;
+            }
+            if (ch == 'G')          // draw graphic command, so mark graphics
+            {
+                ParsePicCommand ();
+                CA_CacheGrChunk (picnum);
+            }
+            if (ch == 'T')          // timed draw graphic command, so mark graphics
+            {
+                ParseTimedCommand ();
+                CA_CacheGrChunk (picnum);
+            }
+        }
+        else
+            text++;
+
+    } while (text<bombpoint);
+
+    Quit ("CacheLayoutGraphics: No ^E to terminate file!");
+}
+#endif
+
+
+/*
+=====================
+=
+= ShowArticle
+=
+=====================
+*/
+
+#ifdef JAPAN
+void ShowArticle (int which)
+#else
+void ShowArticle (char *article)
+#endif
+{
+#ifdef JAPAN
+    int snames[10] = {
+        H_HELP1PIC,
+        H_HELP2PIC,
+        H_HELP3PIC,
+        H_HELP4PIC,
+        H_HELP5PIC,
+        H_HELP6PIC,
+        H_HELP7PIC,
+        H_HELP8PIC,
+        H_HELP9PIC,
+        H_HELP10PIC};
+    int enames[14] = {
+        0,0,
+#ifndef JAPDEMO
+        C_ENDGAME1APIC,
+        C_ENDGAME1BPIC,
+        C_ENDGAME2APIC,
+        C_ENDGAME2BPIC,
+        C_ENDGAME3APIC,
+        C_ENDGAME3BPIC,
+        C_ENDGAME4APIC,
+        C_ENDGAME4BPIC,
+        C_ENDGAME5APIC,
+        C_ENDGAME5BPIC,
+        C_ENDGAME6APIC,
+        C_ENDGAME6BPIC
+#endif
+    };
+#endif
+    unsigned    oldfontnumber;
+    boolean     newpage,firstpage;
+    ControlInfo ci;
+
+#ifdef JAPAN
+    pagenum = 1;
+    if (!which)
+        numpages = 10;
+    else
+        numpages = 2;
+#else
+    text = article;
+    oldfontnumber = fontnumber;
+    fontnumber = 0;
+    CA_CacheGrChunk(STARTFONT);
+    VWB_Bar (0,0,320,200,BACKCOLOR);
+    CacheLayoutGraphics ();
+#endif
+
+    newpage = true;
+    firstpage = true;
+
+    do
+    {
+        if (newpage)
+        {
+            newpage = false;
+#ifdef JAPAN
+            if (!which)
+                CA_CacheScreen(snames[pagenum - 1]);
+            else
+                CA_CacheScreen(enames[which*2 + pagenum - 1]);
+#else
+            PageLayout (true);
+#endif
+            VW_UpdateScreen ();
+            if (firstpage)
+            {
+                VL_FadeIn(0,255,gamepal,10);
+                firstpage = false;
+            }
+        }
+        SDL_Delay(5);
+
+        LastScan = 0;
+        ReadAnyControl(&ci);
+        Direction dir = ci.dir;
+        switch(dir)
+        {
+            case dir_North:
+            case dir_South:
+                break;
+
+            default:
+                if(ci.button0) dir = dir_South;
+                switch(LastScan)
+                {
+                    case sc_UpArrow:
+                    case sc_PgUp:
+                    case sc_LeftArrow:
+                        dir = dir_North;
+                        break;
+
+                    case sc_Enter:
+                    case sc_DownArrow:
+                    case sc_PgDn:
+                    case sc_RightArrow:
+                        dir = dir_South;
+                        break;
+                }
+                break;
+        }
+
+        switch(dir)
+        {
+            case dir_North:
+            case dir_West:
+                if (pagenum>1)
+                {
+#ifndef JAPAN
+                    BackPage ();
+                    BackPage ();
+#else
+                  pagenum--;
+#endif
+                    newpage = true;
+                }
+                TicDelay(20);
+                break;
+
+            case dir_South:
+            case dir_East:
+                if (pagenum<numpages)
+                {
+                    newpage = true;
+#ifdef JAPAN
+                    pagenum++;
+#endif
+                }
+                TicDelay(20);
+                break;
+        }
+    } while (LastScan != sc_Escape && !ci.button1);
+
+    IN_ClearKeysDown ();
+    fontnumber = oldfontnumber;
+}
+
+
+//===========================================================================
+
+#ifndef JAPAN
+#ifdef ARTSEXTERN
+int     endextern = T_ENDART1;
+#ifndef SPEAR
+int     helpextern = T_HELPART;
+#endif
+#endif
+char helpfilename[13] = "HELPART.",
+    endfilename[13] = "ENDART1.";
+#endif
+
+/*
+=================
+=
+= HelpScreens
+=
+=================
+*/
+#ifndef SPEAR
+void HelpScreens (void)
+{
+    int     artnum;
+    char    *text;
+#ifndef ARTSEXTERN
+    memptr  layout;
+#endif
+
+
+    //      CA_UpLevel ();
+    //      MM_SortMem ();
+#ifdef JAPAN
+    ShowArticle (0);
+    VW_FadeOut();
+    FreeMusic ();
+    CA_DownLevel ();
+    MM_SortMem ();
+#else
+
+#ifdef ARTSEXTERN
+    artnum = helpextern;
+    CA_CacheGrChunk (artnum);
+    text = (char *)grsegs[artnum];
+#else
+    CA_LoadFile (helpfilename,&layout);
+    text = (char *)layout;
+#endif
+
+    ShowArticle (text);
+
+#ifdef ARTSEXTERN
+    UNCACHEGRCHUNK(artnum);
+#else
+    free(layout);
+#endif
+
+    VW_FadeOut();
+
+    FreeMusic ();
+#endif
+}
+#endif
+
+//
+// END ARTICLES
+//
+void EndText (void)
+{
+    int     artnum;
+    char    *text;
+#ifndef ARTSEXTERN
+    memptr  layout;
+#endif
+
+    ClearMemory ();
+
+#ifdef JAPAN
+    ShowArticle(gamestate.episode + 1);
+
+    VW_FadeOut();
+
+    SETFONTCOLOR(0,15);
+    IN_ClearKeysDown();
+    if (MousePresent && IN_IsInputGrabbed())
+        IN_CenterMouse();  // Clear accumulated mouse movement
+
+    FreeMusic ();
+#else
+
+
+
+#ifdef ARTSEXTERN
+    artnum = endextern+gamestate.episode;
+    CA_CacheGrChunk (artnum);
+    text = (char *)grsegs[artnum];
+#else
+    endfilename[6] = '1'+gamestate.episode;
+    CA_LoadFile (endfilename,&layout);
+    text = (char *)layout;
+#endif
+
+    ShowArticle (text);
+
+#ifdef ARTSEXTERN
+    UNCACHEGRCHUNK(artnum);
+#else
+    free(layout);
+#endif
+
+
+    VW_FadeOut();
+    SETFONTCOLOR(0,15);
+    IN_ClearKeysDown();
+    if (MousePresent && IN_IsInputGrabbed())
+        IN_CenterMouse();  // Clear accumulated mouse movement
+
+    FreeMusic ();
+#endif
+}
+#endif
-- 
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