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CFireAndSmokePainter.cpp
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// CFireAndSmokePainter.cpp
//
// CFireAndSmokePainter object
// Copyright (c) 2017 Kronosaur Productions, LLC. All Rights Reserved.
#include "PreComp.h"
const CG32bitPixel FLAME_CORE_COLOR = CG32bitPixel(255,241,230);
const CG32bitPixel FLAME_MIDDLE_COLOR = CG32bitPixel(255,208,0);
const CG32bitPixel FLAME_OUTER_COLOR = CG32bitPixel(255,59,27);
#define PAINT_GASEOUS_PARTICLE(Dest,x,y,iWidth,rgbColor,iFade,iFade2) \
{ \
switch (iWidth) \
{ \
case 0: \
Dest.SetPixelTrans((x), (y), (rgbColor), (BYTE)(iFade)); \
break; \
\
case 1: \
Dest.SetPixelTrans((x), (y), (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x) + 1, (y), (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x), (y) + 1, (rgbColor), (BYTE)(iFade2)); \
break; \
\
case 2: \
Dest.SetPixelTrans((x), (y), (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x) + 1, (y), (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x), (y) + 1, (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x) - 1, (y), (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x), (y) - 1, (rgbColor), (BYTE)(iFade2)); \
break; \
\
case 3: \
Dest.SetPixelTrans((x), (y), (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x) + 1, (y), (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x), (y) + 1, (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x) - 1, (y), (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x), (y) - 1, (rgbColor), (BYTE)(iFade)); \
Dest.SetPixelTrans((x) + 1, (y) + 1, (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x) + 1, (y) - 1, (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x) - 1, (y) + 1, (rgbColor), (BYTE)(iFade2)); \
Dest.SetPixelTrans((x) - 1, (y) - 1, (rgbColor), (BYTE)(iFade2)); \
break; \
\
default: \
CGDraw::Circle(Dest, (x), (y), ((iWidth) + 1) / 2, CG32bitPixel((rgbColor), (BYTE)(iFade))); \
break; \
} \
}
CFireAndSmokePainter::CFireAndSmokePainter (EStyles iStyle, int iLifetime, int iMinWidth, int iMaxWidth)
// CFireAndSmokePainter constructor
{
switch (iStyle)
{
case styleSmoke:
Init(iLifetime, iMinWidth, iMaxWidth, 1, iLifetime / 6, iLifetime / 4, 60);
break;
default:
Init(iLifetime, iMinWidth, iMaxWidth, iLifetime / 6, iLifetime / 2, 3 * iLifetime / 4, 80);
break;
}
}
CFireAndSmokePainter::CFireAndSmokePainter (int iLifetime, int iMinWidth, int iMaxWidth, int iCore, int iFlame, int iSmoke, int iSmokeBrightness)
// CFireAndSmokePainter constructor
{
Init(iLifetime, iMinWidth, iMaxWidth, iCore, iFlame, iSmoke, iSmokeBrightness);
}
void CFireAndSmokePainter::Init (int iLifetime, int iMinWidth, int iMaxWidth, int iCore, int iFlame, int iSmoke, int iSmokeBrightness)
// Init
//
// Initialize from parameters
{
m_iLifetime = iLifetime;
m_iMinWidth = Max(1, iMinWidth);
iMaxWidth = Max(m_iMinWidth, iMaxWidth);
m_iWidthRange = (iMaxWidth - m_iMinWidth) + 1;
m_iCore = Max(iCore, 1);
m_iFlame = Max(iFlame, iCore + 1);
m_iSmoke = Max(iSmoke, iFlame + 1);
m_iSmokeBrightness = iSmokeBrightness;
}
void CFireAndSmokePainter::Paint (CG32bitImage &Dest, int x, int y, int iAge, int iDestiny) const
// Paint
//
// Paints a single particle of the given age.
{
// Compute properties of the particle based on its life
CG32bitPixel rgbColor = 0;
int iFade = 0;
int iFade2 = 0;
int iWidth = 0;
if (m_iLifetime > 0)
{
// Particle fades out over time
int iLifeLeft = Max(0, m_iLifetime - iAge);
iFade = Max(20, Min(255, (255 * iLifeLeft / m_iLifetime)));
iFade2 = iFade / 2;
// Particle grows over time
iWidth = m_iMinWidth + (m_iWidthRange * iAge / m_iLifetime);
// Smoke color
int iDarkness = Min(255, m_iSmokeBrightness + (2 * (iDestiny % 25)));
CG32bitPixel rgbSmokeColor = CG32bitPixel::FromGrayscale(iDarkness);
// Some particles are gray
CG32bitPixel rgbFadeColor;
if ((iDestiny % 4) != 0)
rgbFadeColor = FLAME_OUTER_COLOR;
else
rgbFadeColor = rgbSmokeColor;
// Particle color changes over time
if (iAge <= m_iCore)
rgbColor = CG32bitPixel::Fade(FLAME_CORE_COLOR,
FLAME_MIDDLE_COLOR,
100 * iAge / m_iCore);
else if (iAge <= m_iFlame)
rgbColor = CG32bitPixel::Fade(FLAME_MIDDLE_COLOR,
rgbFadeColor,
100 * (iAge - m_iCore) / (m_iFlame - m_iCore));
else if (iAge <= m_iSmoke)
rgbColor = CG32bitPixel::Fade(rgbFadeColor,
rgbSmokeColor,
100 * (iAge - m_iFlame) / (m_iSmoke - m_iFlame));
else
rgbColor = rgbSmokeColor;
}
// Paint the particle
PAINT_GASEOUS_PARTICLE(Dest, x, y, iWidth, rgbColor, iFade, iFade2);
}
// CGaseousPainter ------------------------------------------------------------
CGaseousPainter::CGaseousPainter (int iLifetime, int iMinWidth, int iMaxWidth, CG32bitPixel rgbPrimaryColor, CG32bitPixel rgbSecondaryColor)
// CGaseousPainter constructor
{
m_iLifetime = iLifetime;
m_iMinWidth = Max(1, iMinWidth);
iMaxWidth = Max(m_iMinWidth, iMaxWidth);
m_iWidthRange = (iMaxWidth - m_iMinWidth) + 1;
m_rgbPrimary = rgbPrimaryColor;
m_rgbSecondary = rgbSecondaryColor;
}
void CGaseousPainter::Paint (CG32bitImage &Dest, int x, int y, int iAge) const
// Paint
//
// Paint a gaseous particle
{
// Compute properties of the particle based on its life
CG32bitPixel rgbColor = 0;
int iFade = 0;
int iFade2 = 0;
int iWidth = 0;
if (m_iLifetime > 0)
{
// Particle fades out over time
int iLifeLeft = Max(0, m_iLifetime - iAge);
iFade = Max(20, Min(255, (255 * iLifeLeft / m_iLifetime)));
iFade2 = iFade / 2;
// Particle grows over time
iWidth = m_iMinWidth + (m_iWidthRange * iAge / m_iLifetime);
// Particle color fades from primary to secondary
rgbColor = CG32bitPixel::Fade(m_rgbPrimary, m_rgbSecondary, 100 * iAge / m_iLifetime);
}
// Paint the particle
PAINT_GASEOUS_PARTICLE(Dest, x, y, iWidth, rgbColor, iFade, iFade2);
}
// CGlitterPainter ------------------------------------------------------------
CGlitterPainter::CGlitterPainter (int iWidth, CG32bitPixel rgbPrimary, CG32bitPixel rgbSecondary) :
m_iWidth(iWidth),
m_rgbPrimary(rgbPrimary),
m_rgbSecondary(rgbSecondary)
// CGlitterPainter constructor
{
}
void CGlitterPainter::Paint (CG32bitImage &Dest, int x, int y, int iRotation) const
// Paint
//
// Paint a glittering particle
{
const int HIGHLIGHT_ANGLE = 135;
const int HIGHLIGHT_RANGE = 30;
// Color flips to secondary color at certain angles
int iBearing = Absolute(AngleBearing(HIGHLIGHT_ANGLE, iRotation));
CG32bitPixel rgbColor = (iBearing < HIGHLIGHT_RANGE ? CG32bitPixel::Fade(m_rgbSecondary, m_rgbPrimary, iBearing * 100 / HIGHLIGHT_RANGE) : m_rgbPrimary);
// Draw at appropriate size
switch (m_iWidth)
{
case 0:
Dest.SetPixel(x, y, rgbColor);
break;
case 1:
Dest.SetPixel(x, y, rgbColor);
Dest.SetPixelTrans(x + 1, y, rgbColor, 0x80);
Dest.SetPixelTrans(x, y + 1, rgbColor, 0x80);
break;
case 2:
Dest.SetPixel(x, y, rgbColor);
Dest.SetPixelTrans(x + 1, y, rgbColor, 0x80);
Dest.SetPixelTrans(x, y + 1, rgbColor, 0x80);
Dest.SetPixelTrans(x - 1, y, rgbColor, 0x80);
Dest.SetPixelTrans(x, y - 1, rgbColor, 0x80);
break;
case 3:
Dest.SetPixel(x, y, rgbColor);
Dest.SetPixel(x + 1, y, rgbColor);
Dest.SetPixel(x, y + 1, rgbColor);
Dest.SetPixel(x - 1, y, rgbColor);
Dest.SetPixel(x, y - 1, rgbColor);
Dest.SetPixelTrans(x + 1, y + 1, rgbColor, 0x80);
Dest.SetPixelTrans(x + 1, y - 1, rgbColor, 0x80);
Dest.SetPixelTrans(x - 1, y + 1, rgbColor, 0x80);
Dest.SetPixelTrans(x - 1, y - 1, rgbColor, 0x80);
break;
default:
CGDraw::Circle(Dest, x, y, (m_iWidth + 1) / 2, rgbColor);
break;
}
}