• 让vcmi支持英雄无敌3中文版

    Table of Contents

    1 Hack 日志

    • 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。

    2 Changes

    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 Fri
char * 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!
");
        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

    3 Install by compiling

    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 build
cmake ..

      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/vcmi
ln -s /Data/Dir/of/ChineseGame Data
ln -s /Maps/Dir/of/ChineseGame Maps
ln -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

    4 reply of Ivan

    (0004091) Ivan (developer) - 2013-10-20 13:09
http://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 enable
some functionality but you've tracked every place that needs changes - that will
help.

    Date: 2013-10-21T19:48+0800

    Author: Jiqing Wu

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  • 原文地址：https://www.cnblogs.com/jiqingwu/p/let_vcmi_support_chinese.html
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