Page MenuHomePhabricator (Chris)
Files F627805

FlyingChars.cpp
No OneTemporary
Actions

Authored By
Unknown
Size
8 KB
Referenced Files
None
Subscribers
None

FlyingChars.cpp
View Options

/***************************************************************************
FlyingChars.cpp - description
-------------------
begin : Mon Aug 12 2003
copyright : (C) 2003 by upi
email : upi@apocalypse.rulez.org
***************************************************************************/
#include "FlyingChars.h"
#include "sge_surface.h"
#include "common.h"
int g_iLineTime = 100;
int g_iCharTime = 80;
FlyingChars::FlyingChars( sge_bmpFont* a_poFont, const SDL_Rect& a_roRect, int a_iFontDisplacement )
{
m_poFont = a_poFont;
m_oRect = a_roRect;
m_iFontDisplacement = a_iFontDisplacement;
m_bDone = true;
m_iTimeToNextLine = 0;
m_iDelay = 0;
m_iLastLineY = a_roRect.y;
m_pcText = NULL;
m_enAlignment = FC_AlignLeft;
m_iTextOffset = 0;
m_bScrolling = false;
m_dScrollupRate = (double)(m_poFont->CharHeight+2) / (double)g_iLineTime;
m_dScrollup = 0.0;
}
FlyingChars::~FlyingChars()
{
}
void FlyingChars::AddText( const char* a_pcText,
TextAlignment a_enAlignment, bool a_bOneByOne )
{
EnqueuedText oNewText;
oNewText.m_pcText = a_pcText;
oNewText.m_enAlignment = a_enAlignment;
m_oEnqueuedTexts.push_back( oNewText );
if ( a_bOneByOne && m_iLastLineY <= m_oRect.y )
{
m_iLastLineY = m_oRect.y + m_oRect.h - m_poFont->CharHeight;
}
else if ( 0 == m_pcText
|| m_iLastLineY <= m_oRect.y + m_oRect.h - m_poFont->CharHeight )
{
DequeueText();
}
}
bool FlyingChars::IsDone()
{
if ( m_oEnqueuedTexts.size() == 0
&& ( NULL == m_pcText || 0 == m_pcText[ m_iTextOffset] )
&& ( m_bDone ) )
{
return true;
}
return false;
}
void FlyingChars::DequeueText()
{
if ( 0 == m_oEnqueuedTexts.size() )
{
return;
}
EnqueuedText& oEnqueuedText = m_oEnqueuedTexts.front();
m_pcText = (unsigned char*) oEnqueuedText.m_pcText;
m_enAlignment = oEnqueuedText.m_enAlignment;
m_iTextOffset = 0;
while ( m_iLastLineY <= m_oRect.y + m_oRect.h - m_poFont->CharHeight )
{
AddNextLine();
m_iTimeToNextLine += g_iLineTime;
if ( 0 == m_pcText[m_iTextOffset] )
{
break;
}
}
m_oEnqueuedTexts.pop_front();
}
void FlyingChars::Advance( int a_iNumFrames )
{
if ( a_iNumFrames > 5 ) a_iNumFrames = 5;
if ( a_iNumFrames <= 0 ) a_iNumFrames = 0;
m_bDone = true;
m_iTimeToNextLine -= a_iNumFrames;
if ( m_iTimeToNextLine < 0 )
{
m_iDelay = 0;
if ( !m_pcText
|| 0 == m_pcText[m_iTextOffset] )
{
DequeueText();
}
else
{
m_iTimeToNextLine += g_iLineTime;
AddNextLine();
}
}
m_dScrollup += a_iNumFrames * m_dScrollupRate;
int iScrollup = (int) m_dScrollup;
m_dScrollup -= iScrollup;
iScrollup *= 2;
for ( FlyingLetterIterator it=m_oLetters.begin(); it!=m_oLetters.end(); ++it )
{
FlyingLetter& roLetter = *it;
if ( m_bScrolling )
{
roLetter.m_iDY -= iScrollup;
roLetter.m_iY -= iScrollup;
if ( roLetter.m_iDY < m_oRect.y * 2
&& roLetter.m_iDY >= 0 )
{
roLetter.m_iDY = -100;
roLetter.m_iTime = 40;
}
}
if (roLetter.m_iDelay > 0)
{
roLetter.m_iDelay -= a_iNumFrames;
continue;
}
if ( roLetter.m_iTime > 0 )
{
m_bDone = false;
int iEstX = roLetter.m_iSX * roLetter.m_iTime / 2 + roLetter.m_iX ;
if ( iEstX > roLetter.m_iDX )
{
roLetter.m_iSX -= a_iNumFrames;
}
else if ( iEstX < roLetter.m_iDX )
{
roLetter.m_iSX += a_iNumFrames;
}
roLetter.m_iX += roLetter.m_iSX * a_iNumFrames;
if ( roLetter.m_iSY * roLetter.m_iTime / 2 + roLetter.m_iY >= roLetter.m_iDY )
{
roLetter.m_iSY -= a_iNumFrames;
}
else
{
roLetter.m_iSY += a_iNumFrames;
}
roLetter.m_iY += roLetter.m_iSY * a_iNumFrames;
roLetter.m_iTime -= a_iNumFrames;
if ( roLetter.m_iTime <= 0 )
{
roLetter.m_iX = roLetter.m_iDX;
roLetter.m_iY = roLetter.m_iDY;
roLetter.m_iSX = roLetter.m_iSY = 0;
roLetter.m_iTime = 0;
}
}
}
}
void FlyingChars::Draw()
{
for ( FlyingLetterIterator it=m_oLetters.begin(); it!=m_oLetters.end(); ++it )
{
FlyingLetter& roLetter = *it;
int iDestX, iDestY;
if (roLetter.m_iDelay > 0)
{
continue;
}
else if ( roLetter.m_iTime > 0 )
{
iDestX = roLetter.m_iX;
iDestY = roLetter.m_iY;
}
else
{
iDestX = roLetter.m_iX;
iDestY = roLetter.m_iY;
}
int iSrcX, iSrcW;
if ( ! m_poFont->CharPos )
{
iSrcX = roLetter.m_cLetter * m_poFont->CharWidth;
iSrcW = m_poFont->CharWidth;
}
else
{
int iOfs = ( ((unsigned int)roLetter.m_cLetter)-33)*2 + 1;
iSrcX = m_poFont->CharPos[iOfs];
iSrcW = m_poFont->CharPos[iOfs+1] - iSrcX;
}
//debug( "Letter %c at %d,%d\n", roLetter.m_cLetter, iDestX/2, iDestY/2 );
sge_Blit( m_poFont->FontSurface, gamescreen, iSrcX, m_poFont->yoffs,
iDestX/2, iDestY/2, iSrcW, m_poFont->CharHeight );
}
}
void FlyingChars::AddNextLine()
{
if ( NULL == m_pcText )
{
return;
}
// 1. SCROLL UP EVERYTHING IF NECESSARY
if ( m_iLastLineY > m_oRect.y + m_oRect.h - m_poFont->CharHeight )
{
// scroll up every character
if ( !m_bScrolling )
{
m_bScrolling = true;
m_iTimeToNextLine = (m_iLastLineY - (m_oRect.y + m_oRect.h - m_poFont->CharHeight)) / m_dScrollupRate;
return;
}
m_iLastLineY = m_oRect.y + m_oRect.h - m_poFont->CharHeight;
}
SDL_Rect oRect;
const unsigned char* pcLineStart = m_pcText + m_iTextOffset;
if ( '\n' == *pcLineStart ) ++pcLineStart;
while (*pcLineStart == 32 || *pcLineStart == '\t' ) ++pcLineStart;
if ( 0 == *pcLineStart )
{
m_iTextOffset = pcLineStart - m_pcText;
return;
}
// 2. CALCULATE LINE WIDTH AND CONTENTS
const unsigned char* pcLineEnd = pcLineStart;
const unsigned char* pcNextWord = pcLineEnd;
int iNumWords = 0;
int iLineWidth = 0;
int iWidth = 0;
while (1)
{
++iNumWords;
if ( '\n' == *pcNextWord
|| 0 == *pcNextWord)
{
break;
}
// Skip the next 'white space' part
while (*pcNextWord == 32 || *pcNextWord == '\t' )
{
iWidth += GetCharWidth( *pcNextWord );
++pcNextWord;
}
// Skip the next 'non-whitespace' part
while (*pcNextWord != 32 && *pcNextWord != '\t'
&& *pcNextWord != '\n' && *pcNextWord != 0 )
{
iWidth += GetCharWidth( *pcNextWord );
++pcNextWord;
}
if ( iWidth > m_oRect.w )
{
// overflow
break;
}
pcLineEnd = pcNextWord;
iLineWidth = iWidth;
}
if ( pcLineEnd == pcLineStart )
{
pcLineEnd = pcNextWord;
iLineWidth = iWidth;
}
// 3. ADD LETTERS IN LINE
double dX = m_oRect.x;
double dSpaceLength = 0.0;
switch ( m_enAlignment )
{
case FC_AlignJustify:
if ( '\n' == *pcLineEnd
|| 0 == *pcLineEnd )
{
}
else
{
dSpaceLength = (m_oRect.w - iLineWidth) / double( iNumWords > 2 ? iNumWords-2 : 1 );
}
break;
case FC_AlignCenter:
dX += (m_oRect.w - iLineWidth) /2;
break;
case FC_AlignRight:
dX += (m_oRect.w - iLineWidth);
break;
default:
break;
}
FlyingLetter oLetter;
oLetter.m_iDY = m_iLastLineY * 2;
for ( const unsigned char *pcChar = pcLineStart; pcChar<pcLineEnd; ++pcChar )
{
if ( *pcChar < 33 )
{
if ( *pcChar == 32 || *pcChar == '\t' )
{
dX += dSpaceLength;
// debug( "dX = %3.2f dSpaceLength = %2.2f\n", (float)dX, (float)dSpaceLength );
}
int iWidth = GetCharWidth( *pcChar );
dX += iWidth;
//debug( "dX = %3.2f iWidth = %d\n", (float)dX, iWidth );
continue;
}
oRect = sge_BF_TextSize( m_poFont, (char*) pcLineStart, pcChar-pcLineStart );
oLetter.m_iDX = (int) dX * 2;
oLetter.m_iX = rand() % (gamescreen->w * 2);
oLetter.m_iY = gamescreen->h * 2;
oLetter.m_iSX = 0;
oLetter.m_iSY = -45 + rand() % 15 ;
oLetter.m_iDelay = m_iDelay++;
oLetter.m_iTime = g_iCharTime;
oLetter.m_cLetter = *pcChar;
m_oLetters.push_back(oLetter);
dX += GetCharWidth( *pcChar );
}
m_iTextOffset = pcLineEnd - m_pcText;
m_iLastLineY += m_poFont->CharHeight + 2;
}
int FlyingChars::GetCharWidth( unsigned char a_cChar )
{
if ( a_cChar == 0 )
{
return 0;
}
else if ( m_poFont->CharPos )
{
if ( a_cChar < 33 )
{
return m_poFont->CharPos[3] - m_poFont->CharPos[2] + 1;
}
else
{
int iOfs = ( ((unsigned int)a_cChar) - 33) * 2 + 1;
return m_poFont->CharPos[iOfs+1] - m_poFont->CharPos[iOfs] + m_iFontDisplacement;
}
}
return m_poFont->CharWidth;
}

File Metadata

Mime Type
text/x-c
Expires
Sun, Nov 15, 2:46 AM (1 d, 22 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
132635
Default Alt Text
FlyingChars.cpp (8 KB)

Event Timeline