surface.cpp

// Template, UU version
// IGAD/NHTV/UU - Jacco Bikker - 2006-2019

#include "precomp.h"

namespace Tmpl8
{

void NotifyUser(const char* s);
char Surface::s_Font[51][5][6];
bool Surface::fontInitialized = false;

// -----------------------------------------------------------
// True-color surface class implementation
// -----------------------------------------------------------

Surface::Surface(int a_Width, int a_Height, Pixel* a_Buffer, int a_Pitch) : m_Buffer(a_Buffer),
                                                                            m_Width(a_Width),
                                                                            m_Height(a_Height),
                                                                            m_Pitch(a_Pitch)
{
    m_Flags = 0;
}

Surface::Surface(int a_Width, int a_Height) : m_Width(a_Width),
                                              m_Height(a_Height),
                                              m_Pitch(a_Width)
{
    m_Buffer = (Pixel*)MALLOC64(a_Width * a_Height * sizeof(Pixel));
    m_Flags = OWNER;
}

Surface::Surface(const char* a_File) : m_Buffer(NULL),
                                       m_Width(0), m_Height(0)
{
    FILE* f = fopen(a_File, "rb");
    if (!f)
    {
        char t[128];
        sprintf(t, "File not found: %s", a_File);
        NotifyUser(t);
        return;
    }
    else
        fclose(f);
    LoadImage(a_File);
}

void Surface::LoadImage(const char* a_File)
{
    FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
    fif = FreeImage_GetFileType(a_File, 0);
    if (fif == FIF_UNKNOWN) fif = FreeImage_GetFIFFromFilename(a_File);
    FIBITMAP* tmp = FreeImage_Load(fif, a_File);
    FIBITMAP* dib = FreeImage_ConvertTo32Bits(tmp);
    FreeImage_Unload(tmp);
    m_Width = m_Pitch = FreeImage_GetWidth(dib);
    m_Height = FreeImage_GetHeight(dib);
    m_Buffer = (Pixel*)MALLOC64(m_Width * m_Height * sizeof(Pixel));
    m_Flags = OWNER;
    for (int y = 0; y < m_Height; y++)
    {
        unsigned const char* line = FreeImage_GetScanLine(dib, m_Height - 1 - y);
        memcpy(m_Buffer + y * m_Pitch, line, m_Width * sizeof(Pixel));
    }
    FreeImage_Unload(dib);
}

Surface::~Surface()
{
    if (m_Flags & OWNER)
    {
        // only delete if the buffer was not passed to us
        FREE64(m_Buffer);
    }
}

void Surface::Clear(Pixel a_Color)
{
    int s = m_Width * m_Height;
    for (int i = 0; i < s; i++) m_Buffer[i] = a_Color;
}

void Surface::Centre(const char* a_String, int y1, Pixel color)
{
    int x = (m_Width - (int)strlen(a_String) * 6) / 2;
    Print(a_String, x, y1, color);
}

void Surface::Print(const char* a_String, int x1, int y1, Pixel color)
{
    if (!fontInitialized)
    {
        InitCharset();
        fontInitialized = true;
    }
    Pixel* t = m_Buffer + x1 + y1 * m_Pitch;
    for (int i = 0; i < (int)(strlen(a_String)); i++, t += 6)
    {
        int pos = 0;
        if ((a_String[i] >= 'A') && (a_String[i] <= 'Z'))
            pos = s_Transl[(unsigned short)(a_String[i] - ('A' - 'a'))];
        else
            pos = s_Transl[(unsigned short)a_String[i]];
        Pixel* a = t;
        const char* c = (const char*)s_Font[pos];
        for (int v = 0; v < 5; v++, c++, a += m_Pitch)
            for (int h = 0; h < 5; h++)
                if (*c++ == 'o') *(a + h) = color, *(a + h + m_Pitch) = 0;
    }
}

void Surface::Resize(Surface* a_Orig)
{
    Pixel *src = a_Orig->GetBuffer(), *dst = m_Buffer;
    int u, v, owidth = a_Orig->GetWidth(), oheight = a_Orig->GetHeight();
    int dx = (owidth << 10) / m_Width, dy = (oheight << 10) / m_Height;
    for (v = 0; v < m_Height; v++)
    {
        for (u = 0; u < m_Width; u++)
        {
            int su = u * dx, sv = v * dy;
            Pixel* s = src + (su >> 10) + (sv >> 10) * owidth;
            int ufrac = su & 1023, vfrac = sv & 1023;
            int w4 = (ufrac * vfrac) >> 12;
            int w3 = ((1023 - ufrac) * vfrac) >> 12;
            int w2 = (ufrac * (1023 - vfrac)) >> 12;
            int w1 = ((1023 - ufrac) * (1023 - vfrac)) >> 12;
            int x2 = ((su + dx) > ((owidth - 1) << 10)) ? 0 : 1;
            int y2 = ((sv + dy) > ((oheight - 1) << 10)) ? 0 : 1;
            Pixel p1 = *s, p2 = *(s + x2), p3 = *(s + owidth * y2), p4 = *(s + owidth * y2 + x2);
            unsigned int r = (((p1 & REDMASK) * w1 + (p2 & REDMASK) * w2 + (p3 & REDMASK) * w3 + (p4 & REDMASK) * w4) >> 8) & REDMASK;
            unsigned int g = (((p1 & GREENMASK) * w1 + (p2 & GREENMASK) * w2 + (p3 & GREENMASK) * w3 + (p4 & GREENMASK) * w4) >> 8) & GREENMASK;
            unsigned int b = (((p1 & BLUEMASK) * w1 + (p2 & BLUEMASK) * w2 + (p3 & BLUEMASK) * w3 + (p4 & BLUEMASK) * w4) >> 8) & BLUEMASK;
            *(dst + u + v * m_Pitch) = (Pixel)(r + g + b);
        }
    }
}

#define OUTCODE(x, y) (((x) < xmin) ? 1 : (((x) > xmax) ? 2 : 0)) + (((y) < ymin) ? 4 : (((y) > ymax) ? 8 : 0))

void Surface::Line(float x1, float y1, float x2, float y2, Pixel c)
{
    // clip (Cohen-Sutherland, https://en.wikipedia.org/wiki/Cohen%E2%80%93Sutherland_algorithm)
    const float xmin = 0, ymin = 0, xmax = (float)m_Width - 1, ymax = (float)m_Height - 1;
    int c0 = OUTCODE(x1, y1), c1 = OUTCODE(x2, y2);
    bool accept = false;
    while (1)
    {
        if (!(c0 | c1))
        {
            accept = true;
            break;
        }
        else if (c0 & c1)
            break;
        else
        {
            float x, y;
            const int co = c0 ? c0 : c1;
            if (co & 8)
                x = x1 + (x2 - x1) * (ymax - y1) / (y2 - y1), y = ymax;
            else if (co & 4)
                x = x1 + (x2 - x1) * (ymin - y1) / (y2 - y1), y = ymin;
            else if (co & 2)
                y = y1 + (y2 - y1) * (xmax - x1) / (x2 - x1), x = xmax;
            else if (co & 1)
                y = y1 + (y2 - y1) * (xmin - x1) / (x2 - x1), x = xmin;
            if (co == c0)
                x1 = x, y1 = y, c0 = OUTCODE(x1, y1);
            else
                x2 = x, y2 = y, c1 = OUTCODE(x2, y2);
        }
    }
    if (!accept) return;
    float b = x2 - x1;
    float h = y2 - y1;
    float l = fabsf(b);
    if (fabsf(h) > l) l = fabsf(h);
    int il = (int)l;
    float dx = b / (float)l;
    float dy = h / (float)l;
    for (int i = 0; i <= il; i++)
    {
        *(m_Buffer + (int)x1 + (int)y1 * m_Pitch) = c;
        x1 += dx, y1 += dy;
    }
}

void Surface::Plot(int x, int y, Pixel c)
{
    if ((x >= 0) && (y >= 0) && (x < m_Width) && (y < m_Height))
        m_Buffer[x + y * m_Pitch] = c;
}

void Surface::Box(int x1, int y1, int x2, int y2, Pixel c)
{
    Line((float)x1, (float)y1, (float)x2, (float)y1, c);
    Line((float)x2, (float)y1, (float)x2, (float)y2, c);
    Line((float)x1, (float)y2, (float)x2, (float)y2, c);
    Line((float)x1, (float)y1, (float)x1, (float)y2, c);
}

void Surface::Bar(int x1, int y1, int x2, int y2, Pixel c)
{
    Pixel* a = x1 + y1 * m_Pitch + m_Buffer;
    for (int y = y1; y <= y2; y++)
    {
        for (int x = 0; x <= (x2 - x1); x++) a[x] = c;
        a += m_Pitch;
    }
}

void Surface::CopyTo(Surface* a_Dst, int a_X, int a_Y)
{
    Pixel* dst = a_Dst->GetBuffer();
    Pixel* src = m_Buffer;
    if ((src) && (dst))
    {
        int srcwidth = m_Width;
        int srcheight = m_Height;
        int srcpitch = m_Pitch;
        int dstwidth = a_Dst->GetWidth();
        int dstheight = a_Dst->GetHeight();
        int dstpitch = a_Dst->GetPitch();
        if ((srcwidth + a_X) > dstwidth) srcwidth = dstwidth - a_X;
        if ((srcheight + a_Y) > dstheight) srcheight = dstheight - a_Y;
        if (a_X < 0) src -= a_X, srcwidth += a_X, a_X = 0;
        if (a_Y < 0) src -= a_Y * srcpitch, srcheight += a_Y, a_Y = 0;
        if ((srcwidth > 0) && (srcheight > 0))
        {
            dst += a_X + dstpitch * a_Y;
            for (int y = 0; y < srcheight; y++)
            {
                memcpy(dst, src, srcwidth * 4);
                dst += dstpitch;
                src += srcpitch;
            }
        }
    }
}

void Surface::BlendCopyTo(Surface* a_Dst, int a_X, int a_Y)
{
    Pixel* dst = a_Dst->GetBuffer();
    Pixel* src = m_Buffer;
    if ((src) && (dst))
    {
        int srcwidth = m_Width;
        int srcheight = m_Height;
        int srcpitch = m_Pitch;
        int dstwidth = a_Dst->GetWidth();
        int dstheight = a_Dst->GetHeight();
        int dstpitch = a_Dst->GetPitch();
        if ((srcwidth + a_X) > dstwidth) srcwidth = dstwidth - a_X;
        if ((srcheight + a_Y) > dstheight) srcheight = dstheight - a_Y;
        if (a_X < 0) src -= a_X, srcwidth += a_X, a_X = 0;
        if (a_Y < 0) src -= a_Y * srcpitch, srcheight += a_Y, a_Y = 0;
        if ((srcwidth > 0) && (srcheight > 0))
        {
            dst += a_X + dstpitch * a_Y;
            for (int y = 0; y < srcheight; y++)
            {
                for (int x = 0; x < srcwidth; x++) dst[x] = AddBlend(dst[x], src[x]);
                dst += dstpitch;
                src += srcpitch;
            }
        }
    }
}

void Surface::SetChar(int c, const char* c1, const char* c2, const char* c3, const char* c4, const char* c5)
{
    strcpy(s_Font[c][0], c1);
    strcpy(s_Font[c][1], c2);
    strcpy(s_Font[c][2], c3);
    strcpy(s_Font[c][3], c4);
    strcpy(s_Font[c][4], c5);
}

void Surface::InitCharset()
{
    SetChar(0, ":ooo:", "o:::o", "ooooo", "o:::o", "o:::o");
    SetChar(1, "oooo:", "o:::o", "oooo:", "o:::o", "oooo:");
    SetChar(2, ":oooo", "o::::", "o::::", "o::::", ":oooo");
    SetChar(3, "oooo:", "o:::o", "o:::o", "o:::o", "oooo:");
    SetChar(4, "ooooo", "o::::", "oooo:", "o::::", "ooooo");
    SetChar(5, "ooooo", "o::::", "ooo::", "o::::", "o::::");
    SetChar(6, ":oooo", "o::::", "o:ooo", "o:::o", ":ooo:");
    SetChar(7, "o:::o", "o:::o", "ooooo", "o:::o", "o:::o");
    SetChar(8, "::o::", "::o::", "::o::", "::o::", "::o::");
    SetChar(9, ":::o:", ":::o:", ":::o:", ":::o:", "ooo::");
    SetChar(10, "o::o:", "o:o::", "oo:::", "o:o::", "o::o:");
    SetChar(11, "o::::", "o::::", "o::::", "o::::", "ooooo");
    SetChar(12, "oo:o:", "o:o:o", "o:o:o", "o:::o", "o:::o");
    SetChar(13, "o:::o", "oo::o", "o:o:o", "o::oo", "o:::o");
    SetChar(14, ":ooo:", "o:::o", "o:::o", "o:::o", ":ooo:");
    SetChar(15, "oooo:", "o:::o", "oooo:", "o::::", "o::::");
    SetChar(16, ":ooo:", "o:::o", "o:::o", "o::oo", ":oooo");
    SetChar(17, "oooo:", "o:::o", "oooo:", "o:o::", "o::o:");
    SetChar(18, ":oooo", "o::::", ":ooo:", "::::o", "oooo:");
    SetChar(19, "ooooo", "::o::", "::o::", "::o::", "::o::");
    SetChar(20, "o:::o", "o:::o", "o:::o", "o:::o", ":oooo");
    SetChar(21, "o:::o", "o:::o", ":o:o:", ":o:o:", "::o::");
    SetChar(22, "o:::o", "o:::o", "o:o:o", "o:o:o", ":o:o:");
    SetChar(23, "o:::o", ":o:o:", "::o::", ":o:o:", "o:::o");
    SetChar(24, "o:::o", "o:::o", ":oooo", "::::o", ":ooo:");
    SetChar(25, "ooooo", ":::o:", "::o::", ":o:::", "ooooo");
    SetChar(26, ":ooo:", "o::oo", "o:o:o", "oo::o", ":ooo:");
    SetChar(27, "::o::", ":oo::", "::o::", "::o::", ":ooo:");
    SetChar(28, ":ooo:", "o:::o", "::oo:", ":o:::", "ooooo");
    SetChar(29, "oooo:", "::::o", "::oo:", "::::o", "oooo:");
    SetChar(30, "o::::", "o::o:", "ooooo", ":::o:", ":::o:");
    SetChar(31, "ooooo", "o::::", "oooo:", "::::o", "oooo:");
    SetChar(32, ":oooo", "o::::", "oooo:", "o:::o", ":ooo:");
    SetChar(33, "ooooo", "::::o", ":::o:", "::o::", "::o::");
    SetChar(34, ":ooo:", "o:::o", ":ooo:", "o:::o", ":ooo:");
    SetChar(35, ":ooo:", "o:::o", ":oooo", "::::o", ":ooo:");
    SetChar(36, "::o::", "::o::", "::o::", ":::::", "::o::");
    SetChar(37, ":ooo:", "::::o", ":::o:", ":::::", "::o::");
    SetChar(38, ":::::", ":::::", "::o::", ":::::", "::o::");
    SetChar(39, ":::::", ":::::", ":ooo:", ":::::", ":ooo:");
    SetChar(40, ":::::", ":::::", ":::::", ":::o:", "::o::");
    SetChar(41, ":::::", ":::::", ":::::", ":::::", "::o::");
    SetChar(42, ":::::", ":::::", ":ooo:", ":::::", ":::::");
    SetChar(43, ":::o:", "::o::", "::o::", "::o::", ":::o:");
    SetChar(44, "::o::", ":::o:", ":::o:", ":::o:", "::o::");
    SetChar(45, ":::::", ":::::", ":::::", ":::::", ":::::");
    SetChar(46, "ooooo", "ooooo", "ooooo", "ooooo", "ooooo");
    SetChar(47, "::o::", "::o::", ":::::", ":::::", ":::::"); // Tnx Ferry
    SetChar(48, "o:o:o", ":ooo:", "ooooo", ":ooo:", "o:o:o");
    SetChar(49, "::::o", ":::o:", "::o::", ":o:::", "o::::");
    char c[] = "abcdefghijklmnopqrstuvwxyz0123456789!?:=,.-() #'*/";
    int i;
    for (i = 0; i < 256; i++) s_Transl[i] = 45;
    for (i = 0; i < 50; i++) s_Transl[(unsigned char)c[i]] = i;
}

void Surface::ScaleColor(unsigned int a_Scale)
{
    int s = m_Pitch * m_Height;
    for (int i = 0; i < s; i++)
    {
        Pixel c = m_Buffer[i];
        unsigned int rb = (((c & (REDMASK | BLUEMASK)) * a_Scale) >> 5) & (REDMASK | BLUEMASK);
        unsigned int g = (((c & GREENMASK) * a_Scale) >> 5) & GREENMASK;
        m_Buffer[i] = rb + g;
    }
}

Sprite::Sprite(Surface* a_Surface, unsigned int a_NumFrames) : m_Width(a_Surface->GetWidth() / a_NumFrames),
                                                               m_Height(a_Surface->GetHeight()),
                                                               m_Pitch(a_Surface->GetWidth()),
                                                               m_NumFrames(a_NumFrames),
                                                               m_CurrentFrame(0),
                                                               m_Flags(0),
                                                               m_Start(new unsigned int*[a_NumFrames]),
                                                               m_Surface(a_Surface)
{
    InitializeStartData();
}

Sprite::~Sprite()
{
    delete m_Surface;
    for (unsigned int i = 0; i < m_NumFrames; i++) delete m_Start[i];
    delete m_Start;
}

void Sprite::Draw(Surface* a_Target, int a_X, int a_Y)
{
    //If out of screen skip
    if ((a_X < -m_Width) || (a_X > (a_Target->GetWidth() + m_Width))) return;
    if ((a_Y < -m_Height) || (a_Y > (a_Target->GetHeight() + m_Height))) return;

    //Get start and end points
    int x1 = a_X, x2 = a_X + m_Width;
    int y1 = a_Y, y2 = a_Y + m_Height;

    //Image start
    Pixel* src = GetBuffer() + m_CurrentFrame * m_Width;
    //Set start x to within screen
    if (x1 < 0)
    {
        src += -x1;
        x1 = 0;
    }
    //Set end x to within screen
    if (x2 > a_Target->GetWidth()) x2 = a_Target->GetWidth();
    if (y1 < 0)
    {
        src += -y1 * m_Pitch;
        y1 = 0;
    }
    if (y2 > a_Target->GetHeight()) y2 = a_Target->GetHeight();
    Pixel* dest = a_Target->GetBuffer();
    int xs;
    const int dpitch = a_Target->GetPitch();
    if ((x2 > x1) && (y2 > y1))
    {
        unsigned int addr = y1 * dpitch + x1;
        const int width = x2 - x1;
        const int height = y2 - y1;
        for (int y = 0; y < height; y++)
        {
            const int line = y + (y1 - a_Y);
            const int lsx = m_Start[m_CurrentFrame][line] + a_X;
            if (m_Flags & FLARE)
            {
                xs = (lsx > x1) ? lsx - x1 : 0;
                for (int x = xs; x < width; x++)
                {
                    const Pixel c1 = *(src + x);
                    if (c1 & 0xffffff)
                    {
                        const Pixel c2 = *(dest + addr + x);
                        *(dest + addr + x) = AddBlend(c1, c2);
                    }
                }
            }
            else
            {
                xs = (lsx > x1) ? lsx - x1 : 0;
                for (int x = xs; x < width; x++)
                {
                    const Pixel c1 = *(src + x);
                    if (c1 & 0xffffff) *(dest + addr + x) = c1;
                }
            }
            addr += dpitch;
            src += m_Pitch;
        }
    }
}

void Sprite::DrawScaled(int a_X, int a_Y, int a_Width, int a_Height, Surface* a_Target)
{
    if ((a_Width == 0) || (a_Height == 0)) return;
    if ((a_X < -a_Width) || (a_X > (a_Target->GetWidth() + a_Width))) return;
    if ((a_Y < -a_Height) || (a_Y > (a_Target->GetHeight() + a_Height))) return;

    //Get start and end points
    int x1 = a_X;
    int x2 = a_X + a_Width;
    int y1 = a_Y;
    int y2 = a_Y + a_Height;

    int x_start = 0;
    int x_end = a_Width;
    int y_start = 0;
    int y_end = a_Height;

    //Set start x to within screen
    if (x1 < 0)
    {
        x_start += -x1;
    }
    //Set end x to within screen
    if (x2 > a_Target->GetWidth()) x_end = a_Width - (x2 - a_Target->GetWidth());
    if (y1 < 0)
    {
        y_start += -y1;
    }
    if (y2 > a_Target->GetHeight()) y_end = a_Height - (y2 - a_Target->GetHeight());

    for (int x = x_start; x < x_end; x++)
    {
        for (int y = y_start; y < y_end; y++)
        {
            int u = (int)((float)x * ((float)m_Width / (float)a_Width)) + m_CurrentFrame * m_Width;
            int v = (int)((float)y * ((float)m_Height / (float)a_Height));
            Pixel color = GetBuffer()[u + v * m_Pitch];
            if (color & 0xffffff)
            {
                a_Target->GetBuffer()[a_X + x + ((a_Y + y) * a_Target->GetPitch())] = color;
            }
        }
    }
}

void Sprite::InitializeStartData()
{
    for (unsigned int f = 0; f < m_NumFrames; ++f)
    {
        m_Start[f] = new unsigned int[m_Height];
        for (int y = 0; y < m_Height; ++y)
        {
            m_Start[f][y] = m_Width;
            Pixel* addr = GetBuffer() + f * m_Width + y * m_Pitch;
            for (int x = 0; x < m_Width; ++x)
            {
                if (addr[x])
                {
                    m_Start[f][y] = x;
                    break;
                }
            }
        }
    }
}

Font::Font(const char* a_File, const char* a_Chars)
{
    m_Surface = new Surface(a_File);
    Pixel* b = m_Surface->GetBuffer();
    int w = m_Surface->GetWidth();
    int h = m_Surface->GetHeight();
    unsigned int charnr = 0, start = 0;
    m_Trans = new int[256];
    memset(m_Trans, 0, 1024);
    unsigned int i;
    for (i = 0; i < strlen(a_Chars); i++) m_Trans[(unsigned char)a_Chars[i]] = i;
    m_Offset = new int[strlen(a_Chars)];
    m_Width = new int[strlen(a_Chars)];
    m_Height = h;
    m_CY1 = 0, m_CY2 = 1024;
    int x, y;
    bool lastempty = true;
    for (x = 0; x < w; x++)
    {
        bool empty = true;
        for (y = 0; y < h; y++)
            if (*(b + x + y * w) & 0xffffff)
            {
                if (lastempty) start = x;
                empty = false;
            }
        if ((empty) && (!lastempty))
        {
            m_Width[charnr] = x - start;
            m_Offset[charnr] = start;
            if (++charnr == strlen(a_Chars)) break;
        }
        lastempty = empty;
    }
}

Font::~Font()
{
    delete m_Surface;
    delete m_Trans;
    delete m_Width;
    delete m_Offset;
}

int Font::Width(const char* a_Text)
{
    int w = 0;
    unsigned int i;
    for (i = 0; i < strlen(a_Text); i++)
    {
        unsigned char c = (unsigned char)a_Text[i];
        if (c == 32)
            w += 4;
        else
            w += m_Width[m_Trans[c]] + 2;
    }
    return w;
}

void Font::Centre(Surface* a_Target, const char* a_Text, int a_Y)
{
    int x = (a_Target->GetPitch() - Width(a_Text)) / 2;
    Print(a_Target, a_Text, x, a_Y);
}

void Font::Print(Surface* a_Target, const char* a_Text, int a_X, int a_Y, bool clip)
{
    Pixel* b = a_Target->GetBuffer() + a_X + a_Y * a_Target->GetPitch();
    Pixel* s = m_Surface->GetBuffer();
    unsigned int i, cx;
    int x, y;
    if (((a_Y + m_Height) < m_CY1) || (a_Y > m_CY2)) return;
    for (cx = 0, i = 0; i < strlen(a_Text); i++)
    {
        if (a_Text[i] == ' ')
            cx += 4;
        else
        {
            int c = m_Trans[(unsigned char)a_Text[i]];
            Pixel *t = s + m_Offset[c], *d = b + cx;
            if (clip)
            {
                for (y = 0; y < m_Height; y++)
                {
                    if (((a_Y + y) >= m_CY1) && ((a_Y + y) <= m_CY2))
                    {
                        for (x = 0; x < m_Width[c]; x++)
                            if ((t[x]) && ((x + (int)cx + a_X) < a_Target->GetPitch()))
                                d[x] = AddBlend(t[x], d[x]);
                    }
                    t += m_Surface->GetPitch(), d += a_Target->GetPitch();
                }
            }
            else
            {
                for (y = 0; y < m_Height; y++)
                {
                    if (((a_Y + y) >= m_CY1) && ((a_Y + y) <= m_CY2))
                        for (x = 0; x < m_Width[c]; x++)
                            if (t[x]) d[x] = AddBlend(t[x], d[x]);
                    t += m_Surface->GetPitch(), d += a_Target->GetPitch();
                }
            }
            cx += m_Width[c] + 2;
            if ((int)(cx + a_X) >= a_Target->GetPitch()) break;
        }
    }
}

}; // namespace Tmpl8