laFont.cpp

/*

Jump'n'Run Engine
http://www.atanaslaskov.com/jnr/

BSD LICENSE
Copyright (c) 2007-2013, Atanas Laskov
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL ATANAS LASKOV BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

//
// FILE: laFont.cpp
//
// Copyright (C) 2007-2013 Atanas Laskov, <latanas@gmail.com>
//
#include "stdafx.h"
#include "Core.h"

char laFont::_str[256] = "";

laFont::laFont(void)
{
    _dSz = 1;
    _nAlignH = M_AL;
    _nAlignV = M_AM;
}

laFont::~laFont(void)
{
}

void  laFont::discard()
{
}

void laFont::ctlSize(double sz)
{
    _dSz = sz;
}

//#include <GL\GL.h>

void laFont::_draw_string(laRenderer* r, laPoint3 pos, char* strStr)
{
    ERRORLEVEL_BEGIN;
    double len = lenght(strStr);
    unsigned nLenght = strlen(strStr);

    // Adjust for horizontal align
    //
    switch(_nAlignH)
    {
    case M_AL:
        break;
    case M_AR:
        pos[0] -= len;
        break;
    case M_AC:
        pos[0] -= len/2.0;
        break;
    }

    // Adjust for vertical align
    //
    switch(_nAlignV)
    {
    case M_AT:
        break;
    case M_AB:
        pos[1] -= _dSz;
        break;
    case M_AM:
        pos[1] -= _dSz/2.0;
        break;
    }

    // Prepare chars
    //
    laPoint3 *pquad = r->vquadsData(0, nLenght);
    laPoint2 uv, *puv = r->vquadsTexCoord(0, nLenght);

    int index, nvisisble=0;
    double x_original = pos.x();

    for(unsigned i=0; i<nLenght; i++)
    {
        if( strStr[i] == '#')       // use # as new line marker
        {
            pos[0] = x_original;
            pos[1] += _dSz*1.1;     // line spacing 1.1
        }
        else
        {
            pos[0] += _dSz*_dWidthFactor;
            index = strStr[i] - _charStart;

            if( (index>=0) /*&& (index<_nCharsPerLine*2)*/)
            {
                nvisisble++;

                *(pquad++) = pos;
                *(pquad++) = pos + laPoint3(_dSz*_dWidthFactor, 0);
                *(pquad++) = pos + laPoint3(_dSz*_dWidthFactor, _dSz);
                *(pquad++) = pos + laPoint3(0, _dSz);

                uv = laPoint2( ((index%_nCharsPerLine)*_dTexCharW), 1.01 - (index/_nCharsPerLine+1)*_dTexCharH );

                *(puv++) = uv + laPoint2(0,_dTexCharH);
                *(puv++) = uv + laPoint2(_dTexCharW,_dTexCharH);
                *(puv++) = uv + laPoint2(_dTexCharW,0);
                *(puv++) = uv;
            }
        }
    }

    // Render chars
    //
    _tex.use();
    r->vquadsDraw(nvisisble);

    ERRORLEVEL_END;
}

void laFont::draw(const laPoint3 &pos, char* strFormat, ...)
{
    //PROFILE_REN(laFont_draw);

    char        text[256];
    va_list     ap;

    if ( !strFormat ) return;

    va_start(ap, strFormat);
        vsnprintf(text, 250, strFormat, ap);
    va_end(ap);

    text[255] = '\0';
    _draw_string(::laSystemIntegrator::getRenderer(), pos, text);
}

void laFont::load(class laFileParser *fp)
{
    char strName[128];
    char strFileName[128];
    unsigned nCharW;
    unsigned nCharH;
    laRenderer* r = ::laSystemIntegrator::getIntegrator()->getRenderer();

    //fp.readSectionSeparator();

    fp->readText(strName);
    sprintf(strFileName, "%s%s", M_DIR_FONT, strName);
    _tex.load(strFileName, M_TEX_TMAP);

    fp->readText(strName);
    _charStart = strName[0];

    fp->readUnsigned(&nCharW);
    fp->readUnsigned(&nCharH);
    _dTexCharW =  1.0/((double)_tex.w/nCharW);
    _dTexCharH =  1.0/((double)_tex.h/nCharH);
    _nCharsPerLine = ((double)_tex.w)/nCharW;

    _dWidthFactor = (double)nCharW/nCharH;

    //::laSystemIntegrator::getEnvironment()->message(M_FALSE, "%d %d %f %f %d", nCharW, nCharH, _dTexCharW, _dTexCharH, _nCharsPerLine);

    fp->readDouble(&_dSz);
    _dSz *= M_UNIT;
}

// Obfuscate and de-obfuscate string
//
char* laFont::obfuscated(char* str)
{
    unsigned n = strlen(str);
    unsigned char k;

    ASSERT(n<255, "Can't produce obfuscated string for lenght %d", n);

    // Apply XOR encription; The key is based on strlen() and different for each char
    //
    for(unsigned i=0; i<n; i++)
    {
        _str[i] = (str[i]) ^ ( (n*3 - i) % 127 + 1 );
        //TODO: Sometimes can endup 0 and the string is truncated; fix by tweaking the key
    }
    _str[n] = '\0';

    return _str;
}

// Quote obfuscated string literal
//
char* laFont::obfuscated_escape(char* str_in, char* str_out) {
    unsigned n = strlen(str_in);
    str_out[0] = '\0';

    for(unsigned i=0; i<n; i++)
    {
        char snum[6];
        sprintf(snum, "\\x%x", (unsigned)(str_in[i]));
        strcat(str_out, snum);
    }

    return str_out;
}

// Get built-in obfuscated string
// NOTE: It is preferable these few strings are here and not directly in the headers;
// Placing the headers would require re-compiling the whole project when they change
// and also it would be easier to single out the string values if the headers are redistributed
//
char* laFont::getSourceStr(unsigned i)
{
    //Copyright (C) 2010 Atanas Laskov, <laskov@sen-works.net>
    //[Jumping RON] Copyright (C) 2010 Atanas Laskov
    //[Level Generation and Editing System] Copyright (C) 2010 Atanas Laskov

    switch(i)
    {
    case 0: return laFont::obfuscated("\x69\x46\x58\x5e\x54\x4c\x43\x4b\x56\x1\x8\x5c\x37\x3d\x2e\x2b\x2b\x29\x38\x56\x62\x74\x7a\x72\x61\x31\x5c\x6e\x7d\x66\x63\x7d\x26\x29\x34\x6b\x67\x76\x6f\x6c\x74\x41\xc\x1b\x13\x51\xc\x15\xb\x13\x4\x58\x1b\x11\x7\x4c");
    case 1: return laFont::obfuscated("\x57\x41\x7f\x64\x78\x6e\x68\x62\x24\x51\x4d\x4f\x22\x5e\x3e\x13\xb\x3\xb\x11\x10\x1e\x1\x54\x5b\x31\x58\x50\x5d\x5e\x5c\x5c\x4b\x2b\x1d\x9\x9\x7\x16\x44\x2f\x3\x12\xb\x30\x28");
    case 2: return laFont::obfuscated("\xf\x1f\x37\x27\x35\x23\x6e\xa\x29\x25\x2f\x3b\x29\x33\x2f\x2a\x2a\x63\x23\x2f\x24\x1f\x7b\x59\x55\x4f\x53\x57\x5f\x17\x65\x4c\x47\x47\x57\x5c\x6d\xf\x6d\x42\x5c\x52\x58\x40\x4f\x4f\x52\x5\xc\x60\xb\x1\x12\x2f\x2f\x2d\x3c\x5a\x6e\x78\x76\x76\x65\x35\x58\x72\x61\x7a\x7f\x79");

    default:
        ASSERT(M_FALSE, "Undeifned String (%d)", i);
    }
}