Table of Contents

• 1 Hack 日志
• 2 Changes
• 3 Install by compiling
• 4 reply of Ivan

• 8月22日开始动手修改改vcmi（英雄无敌3的开源游戏引擎）的源码， 让它支持简体中文版的游戏数据。
• 8月25日，已经有一个可工作的修改版，但自己不满意。这个版本的原理是每次要显 示文本的时候，都用自己写的编码转换函数将字符串从GBK编码转为UTF8编码，从而 能正常地显示中文。但每次显式都转换，每秒游戏要10帧以上，每帧要显示的字符串 可以多达数十个，这样每秒要做数百次字符串转换，效率很低。虽然这样的计算量对 现代CPU来说不算啥，但心里觉得别扭。高效的做法应该是将游戏数据中的GBK编码的 字符串载入内存的时候只做一次编码转换，转换为UTF8编码。
• 这时开始置疑PC游戏相关工作的意义，所以工作中断了。
• 中断一个月后，觉得开始的事情没做完，心里别扭，就决定来个收场。于是9月27号， 开始做一个高效的修改。9月28日算大功告成。这个事可以告一段落了。

以下是对源码所做的修改，和怎么编译安装，当时用英文做的记录，懒得再翻译回中文了。

1. client/CMessage.cpp

   in function CMessage::breakText(), line 153

               // added by jiqingwu@gmail.com, 2013-08-28            // If the text[z] is less than 0, it is the first byte of a UTF8 Chinese word.#ifdef ZH_CN            else if (text[z] < 0){                z++;                z++;             lineLength += graphics->fonts[font]->getSymbolWidth(text[z]);            }#endif

2. client/gui/Fonts.cpp

   in function CTrueTypeFont::getStringWidth(), line 255

       // added by jiqingwu@gmail.com, 2013-08-28    // If we are handling simplified chinese, it is a UTF8 string#ifdef ZH_CN    TTF_SizeUTF8(font.get(), data.c_str(), &width, NULL);#else    TTF_SizeText(font.get(), data.c_str(), &width, NULL);#endif

   in function CTrueTypeFont::renderText(), line 279

        if (blended)            // added by jiqingwu@gmail.com, 2013-09-28 Sat            // If we are handling simplified chinese game data, it is a UTF8 string#ifdef ZH_CN         rendered = TTF_RenderUTF8_Blended(font.get(), data.c_str(), color);#else         rendered = TTF_RenderText_Blended(font.get(), data.c_str(), color);#endif     else            // added by jiqingwu@gmail.com, 2013-09-28 Sat            // If we are handling simplified chinese game data, it is a UTF8 string#ifdef ZH_CN         rendered = TTF_RenderUTF8_Solid(font.get(), data.c_str(), color);#else         rendered = TTF_RenderText_Solid(font.get(), data.c_str(), color);#endif

3. add lib/ConvertEncoding.cpp and lib/ConvertEncoding.h

   The content of ConvertEncoding.h is:

   char * convert_enc(char *src_enc, char *dest_enc, const char * src_string);

   The content of ConvertEncoding.cpp is:

   /* * ConvertEncoding.cpp, for vcmi using CJK(China/Japan/Korea) data. * * Authors: Wu Jiqing (jiqingwu@gmail.com) * * License: GNU General Public License v2.0 or later * */// added by jiqingwu(jiqingwu@gmail.com)// 2013-09-27 Fri#include <stdio.h>#include <iconv.h>#include <string.h>// added by jiqingwu@gmail.com, 2013-09-27 Frichar * convert_enc(char *src_enc, char *dest_enc, const char * src_string){#define UTF8_STR_LEN 5000    static char out_string[UTF8_STR_LEN], *sin, *sout;    int  in_len, out_len, ret;    iconv_t c_pt;    if ((c_pt = iconv_open(dest_enc, src_enc)) == (iconv_t)-1)    {        printf("iconv open failed!\n");        return NULL;    }    // iconv(c_pt, NULL, NULL, NULL, NULL);    in_len  = strlen(src_string) + 1;    out_len = UTF8_STR_LEN;    sin = (char *)src_string;    sout = out_string;    ret = iconv(c_pt, &sin, (size_t *)&in_len, &sout, (size_t *)&out_len);    if (ret == -1)    {        return NULL;    }    iconv_close(c_pt);    return out_string;}

   to link ConvertEncoding.o into library, add two lines into lib/CMakeLists.txt:

   set(lib_SRCS        ...        ConvertEncoding.cpp)set(lib_HEADERS        ...        ConvertEncoding.h)

4. lib/CGeneralTextHandler.cpp,

   To include "ConvertEncoding.h"

   // added by jiqingwu(jiqingwu@gmail.com)// 2013-09-27 Fri#include "ConvertEncoding.h"

   in function CLegacyConfigParser::readString(), line 112

       // added by jiqingwu@gmail.com, 2013-09-27 Fri    // convert gbk string to utf-8 string.    // (For simplified Chinese game data, the string is GBK encoded)#ifdef ZH_CN    char * utf8_str = convert_enc("GBK", "UTF8", ret.c_str());    return std::string((const char*)utf8_str);#else    return ret;#endif

5. lib/filesystem/CBinaryReader.cpp,

   to include "ConvertEncoding.h":

   // added by <jiqingwu@gmail.com>, 2013-09-28 Sat#include "../ConvertEncoding.h"

   in function CBinaryReader::readString(), line 95

       // added by jiqingwu@gmail.com, 2013-08-22    // If we are handling chinese data, convert gbk string to utf-8 string.#ifdef ZH_CN    char * utf8_str = convert_enc("GBK", "UTF8", ret.c_str());    return std::string((const char*)utf8_str);#else    return ret;#endif

1. add such a line into ./CMakeLists.txt to enable supporting Simplifed Chinese Game Data

   add_definitions(-DZH_CN)

2. make a directory build under the source dir

   mkdir build

3. create makefiles

   cd buildcmake ..

   This may take a short while.

4. compile

   make

5. install (root privilege is needed)

   make install

   Check the directories of vcmi

   vcmiclient -v

   You will see the result like this:

   Starting... VCMI 0.93  data directory:    /usr/local/share/vcmi  library directory: /usr/local/lib/vcmi  path to server:    /usr/local/bin/vcmiserver

   Here, vcmi is installed under /usr/local

6. Use the Data from the chinese version of Death of Shadow. Link the ‘Data‘, ‘Maps‘, ‘Mp3‘ directories under /usr/local/share/vcmi like this (You need have root privilege):

   cd /usr/local/share/vcmiln -s /Data/Dir/of/ChineseGame Dataln -s /Maps/Dir/of/ChineseGame Mapsln -s /Mp3/Dir/of/ChineseGame Mp3

7. To show chinese characters in this game, you need put a true type font which supports Chinese into /usr/local/share/vcmi/Data.

   cp /chinese/font/path /usr/local/share/vcmi/Data

   Edit the /usr/local/share/vcmi/config/fonts.json, modify the truetype font section like this:

   "trueType":{    "BIGFONT"  : { "file" : "ChineseFont.ttf", "size" : 22, "blend" : true},    "CALLI10R" : { "file" : "ChineseFont.ttf", "size" : 10, "blend" : true},    "CREDITS"  : { "file" : "ChineseFont.ttf", "size" : 28, "blend" : true},    "HISCORE"  : { "file" : "ChineseFont.ttf", "size" : 13, "blend" : true},    "MEDFONT"  : { "file" : "ChineseFont.ttf", "size" : 16, "blend" : true},    "SMALFONT" : { "file" : "ChineseFont.ttf", "size" : 13, "blend" : true},    "TIMES08R" : { "file" : "ChineseFont.ttf", "size" : 11, "blend" : true},    "TINY"     : { "file" : "ChineseFont.ttf", "size" : 11, "blend" : true},    "VERD10B"  : { "file" : "ChineseFont.ttf", "size" : 13, "blend" : true}}

   Where ChineseFont.ttf is your true type font.

8. Play Game

   vcmiclient

(0004091) Ivan (developer) - 2013-10-20 13:09http://bugs.vcmi.eu/view.php?id=1420#c4091----------------------------------------------------------------------Thanks. I‘ll take a look on this. I don‘t like idea of using ifdef‘s to enablesome functionality but you‘ve tracked every place that needs changes - that willhelp.