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// editing.cpp: most map editing commands go here, entity editing commands are in world.cpp
 
#include "cube.h"
 
bool editmode = false;
 
// the current selections, used by almost all editing commands
// invariant: all code assumes that these are kept inside MINBORD distance of the edge of the map
// => selections are checked when they are made or when the world is reloaded
 
vector<block> sels;
 
#define loopselxy(sel, b) { makeundo(sel); loop(x,(sel).xs) loop(y,(sel).ys) if(!OUTBORD(sel.x+x, sel.y+y)) { sqr *s = S((sel).x+x, (sel).y+y); b; } remip(sel); }
#define loopselsxy(b) { loopv(sels) loopselxy(sels[i], b); }
 
int cx, cy, ch;
 
int curedittex[] = { -1, -1, -1 };
 
bool dragging = false;
int lastx, lasty, lasth;
 
int lasttype = 0, lasttex = 0;
sqr rtex;
 
VAR(editing, 1, 0, 0);
 
void toggleedit(bool force)
{
    if(player1->state==CS_DEAD && !editmode) return;      // do not allow dead players to edit to avoid state confusion
    if(!force && !editmode && !allowedittoggle()) return; // not in most multiplayer modes
    if(!(editmode = !editmode))
    {
        entinmap(player1);                                // find spawn closest to current floating pos
    }
    else
    {
        //put call to clear/restart gamemode
        player1->attacking = false;
    }
    keyrepeat(editmode);
    editing = editmode ? 1 : 0;
    player1->state = editing ? CS_EDITING : CS_ALIVE;
    if(editing && player1->onladder) player1->onladder = false;
    if (editing && player1->zoomed) player1->zoomed = 0; // reset zoom
    if(!force) addmsg(SV_EDITMODE, "ri", editing);
}
 
void edittoggle() { toggleedit(false); }
 
COMMAND(edittoggle, "");
 
bool correctsel(block &s)                                       // ensures above invariant
{
    int bsize = ssize - MINBORD;
    if(s.xs+s.x>bsize) s.xs = bsize-s.x;
    if(s.ys+s.y>bsize) s.ys = bsize-s.y;
    if(s.xs<=0 || s.ys<=0) return false;
    else return !OUTBORD(s.x, s.y);
}
 
bool noteditmode(const char* func)
{
    if(!editmode)
    {
        if(func && func[0]!='\0') conoutf("\f4[\f3%s\f4]\f5 is only allowed in edit mode", func);
        else conoutf("this function is only allowed in edit mode");
    }
    return !editmode;
}
 
inline bool selset()
{
    return (sels.length() > 0);
}
 
bool noselection()
{
    if(!selset()) conoutf("no selection");
    return !selset();
}
 
char *editinfo()
{
    static string info;
    if(!editmode) return NULL;
    int e = closestent();
    if(e<0) return NULL;
    entity &c = ents[e];
    string selinfo = "no selection";
    if(selset()) formatstring(selinfo)("selection = (%d, %d)", (sels.last()).xs, (sels.last()).ys);
    formatstring(info)("closest entity = %s (%d, %d, %d, %d), %s", entnames[c.type], c.attr1, c.attr2, c.attr3, c.attr4, selinfo);
    return info;
}
 
 
#define EDITSEL   if(noteditmode("EDITSEL") || noselection()) return
#define EDITSELMP if(noteditmode("EDITSELMP") || noselection() || multiplayer()) return
#define EDITMP    if(noteditmode("EDITMP") || multiplayer()) return
 
// multiple sels
 
// add a selection to the list
void addselection(int x, int y, int xs, int ys, int h)
{
    block &s = sels.add();
    s.x = x; s.y = y; s.xs = xs; s.ys = ys; s.h = h;
    if(!correctsel(s)) { sels.drop(); }
}
 
// reset all selections
void resetselections()
{
    sels.shrink(0);
}
 
// reset all invalid selections
void checkselections()
{
    loopv(sels) if(!correctsel(sels[i])) sels.remove(i);
}
 
// update current selection, or add a new one
void makesel(bool isnew)
{
    block &cursel = sels.last(); //RR 10/12/12 - FIXEME, error checking should happen with "isnew", not here checking if it really is new.
    if(isnew || sels.length() == 0) addselection(min(lastx, cx), min(lasty, cy), abs(lastx-cx)+1, abs(lasty-cy)+1, max(lasth, ch));
    else
    {
        cursel.x = min(lastx, cx); cursel.y = min(lasty, cy);
        cursel.xs = abs(lastx-cx)+1; cursel.ys = abs(lasty-cy)+1;
        cursel.h = max(lasth, ch);
        correctsel(cursel);
    }
    if(selset()) rtex = *S((sels.last()).x, (sels.last()).y);
}
 
#define SEL_ATTR(attr) { string buf = ""; loopv(sels) { concatformatstring(buf, "%d ", sels[i].attr); } result(buf); }
COMMANDF(selx, "", (void) { SEL_ATTR(x); });
COMMANDF(sely, "", (void) { SEL_ATTR(y); });
COMMANDF(selxs, "", (void) { SEL_ATTR(xs); });
COMMANDF(selys, "", (void) { SEL_ATTR(ys); });
#undef SEL_ATTR
 
VAR(flrceil,0,0,2);
VAR(editaxis,0,0,13);
VARP(showgrid,0,1,1);
 
// VC8 optimizer screws up rendering somehow if this is an actual function
#define sheight(s,t,z) (!flrceil ? (s->type==FHF ? s->floor-t->vdelta/4.0f : (float)s->floor) : (s->type==CHF ? s->ceil+t->vdelta/4.0f : (float)s->ceil))
 
void cursorupdate()                                     // called every frame from hud
{
    flrceil = ((int)(camera1->pitch>=0))*2;
    int cyaw = ((int) camera1->yaw) % 180;
    editaxis = editmode ? (fabs(camera1->pitch) > 65 ? 13 : (cyaw < 45 || cyaw > 135 ? 12 : 11)) : 0;
 
    volatile float x = worldpos.x;                      // volatile needed to prevent msvc7 optimizer bug?
    volatile float y = worldpos.y;
    volatile float z = worldpos.z;
 
    cx = (int)x;
    cy = (int)y;
 
    if(OUTBORD(cx, cy)) return;
    sqr *s = S(cx,cy);
 
    if(fabs(sheight(s,s,z)-z)>1)                        // selected wall
    {
        x += x>camera1->o.x ? 0.5f : -0.5f;             // find right wall cube
        y += y>camera1->o.y ? 0.5f : -0.5f;
 
        cx = (int)x;
        cy = (int)y;
 
        if(OUTBORD(cx, cy)) return;
    }
 
    if(dragging) { makesel(false); };
 
    const int GRIDSIZE = 5;
    const float GRIDW = 0.5f;
    const float GRID8 = 2.0f;
    const float GRIDS = 2.0f;
    const int GRIDM = 0x7;
 
    // render editing grid
 
    if(showgrid)
    {
        for(int ix = cx-GRIDSIZE; ix<=cx+GRIDSIZE; ix++) for(int iy = cy-GRIDSIZE; iy<=cy+GRIDSIZE; iy++)
        {
 
            if(OUTBORD(ix, iy)) continue;
            sqr *s = S(ix,iy);
            if(SOLID(s)) continue;
            float h1 = sheight(s, s, z);
            float h2 = sheight(s, SWS(s,1,0,sfactor), z);
            float h3 = sheight(s, SWS(s,1,1,sfactor), z);
            float h4 = sheight(s, SWS(s,0,1,sfactor), z);
            if(s->tag) linestyle(GRIDW, 0xFF, 0x40, 0x40);
            else if(s->type==FHF || s->type==CHF) linestyle(GRIDW, 0x80, 0xFF, 0x80);
            else linestyle(GRIDW, 0x80, 0x80, 0x80);
            block b = { ix, iy, 1, 1 };
            box(b, h1, h2, h3, h4);
            linestyle(GRID8, 0x40, 0x40, 0xFF);
            if(!(ix&GRIDM))   line(ix,   iy,   h1, ix,   iy+1, h4);
            if(!((ix+1)&GRIDM)) line(ix+1, iy,   h2, ix+1, iy+1, h3);
            if(!(iy&GRIDM))   line(ix,   iy,   h1, ix+1, iy,   h2);
            if(!((iy+1)&GRIDM)) line(ix,   iy+1, h4, ix+1, iy+1, h3);
        }
 
        if(!SOLID(s))
        {
            float ih = sheight(s, s, z);
            linestyle(GRIDS, 0xFF, 0xFF, 0xFF);
            block b = { cx, cy, 1, 1 };
            box(b, ih, sheight(s, SWS(s,1,0,sfactor), z), sheight(s, SWS(s,1,1,sfactor), z), sheight(s, SWS(s,0,1,sfactor), z));
            linestyle(GRIDS, 0xFF, 0x00, 0x00);
            dot(cx, cy, ih);
            ch = (int)ih;
        }
    }
 
    if(selset())
    {
        linestyle(GRIDS, 0xFF, 0x40, 0x40);
        loopv(sels) box(sels[i], (float)sels[i].h, (float)sels[i].h, (float)sels[i].h, (float)sels[i].h);
    }
 
    glLineWidth(1);
}
 
vector<block *> undos;                                  // unlimited undo
VAR(undomegs, 0, 1, 10);                                // bounded by n megs
 
void pruneundos(int maxremain)                          // bound memory
{
    int t = 0;
    loopvrev(undos)
    {
        t += undos[i]->xs*undos[i]->ys*sizeof(sqr);
        if(t>maxremain) delete[] (uchar *)undos.remove(i);
    }
}
 
void makeundo(block &sel)
{
    undos.add(blockcopy(sel));
    pruneundos(undomegs<<20);
}
 
void editundo()
{
    EDITMP;
    if(undos.empty()) { conoutf("nothing more to undo"); return; }
    block *p = undos.pop();
    blockpaste(*p);
    freeblock(p);
}
 
vector<block *> copybuffers;
 
void resetcopybuffers()
{
    loopv(copybuffers) freeblock(copybuffers[i]);
    copybuffers.shrink(0);
}
 
void copy()
{
    EDITSELMP;
    resetcopybuffers();
    loopv(sels)
    {
        block *b = blockcopy(sels[i]);
        copybuffers.add(b);
    }
 
}
 
void paste()
{
    EDITSELMP;
    if(!copybuffers.length()) { conoutf("nothing to paste"); return; }
 
    loopv(sels)
    {
        block &sel = sels[i];
        int selx = sel.x;
        int sely = sel.y;
 
        loopvj(copybuffers)
        {
            block *copyblock = copybuffers[j];
            int dx = copyblock->x - copybuffers[0]->x, dy = copyblock->y - copybuffers[0]->y;
 
            sel.xs = copyblock->xs;
            sel.ys = copyblock->ys;
            sel.x = selx + dx;
            sel.y = sely + dy;
            if(!correctsel(sel) || sel.xs!=copyblock->xs || sel.ys!=copyblock->ys) { conoutf("incorrect selection"); return; }
            makeundo(sel);
            blockpaste(*copyblock, sel.x, sel.y, true);
        }
        remipmore(sel);
    }
}
 
// Count the walls of type "type" contained in the current selection
void countwalls(int *type)
{
    int counter = 0;
    EDITSELMP;
    if(*type < 0 || *type >= MAXTYPE)
    {
        conoutf("invalid type");
        intret(0);
    }
    loopselsxy(if(s->type==*type) counter++)
    intret(counter);
}
 
void tofronttex()                                       // maintain most recently used of the texture lists when applying texture
{
    loopi(3)
    {
        int c = curedittex[i];
        if(c>=0)
        {
            uchar *p = hdr.texlists[i];
            int t = p[c];
            for(int a = c-1; a>=0; a--) p[a+1] = p[a];
            p[0] = t;
            curedittex[i] = -1;
        }
    }
}
 
void editdrag(bool isdown)
{
    if((dragging = isdown))
    {
        lastx = cx;
        lasty = cy;
        lasth = ch;
        tofronttex();
 
        bool ctrlpressed = false;
 
        if (identexists("newselkeys"))
        {
            extern vector<keym> keyms;
            vector<char *> elems;
            explodelist(getalias("newselkeys"), elems);
 
            loopi(keyms.length()) if(keyms[i].pressed) loopj(elems.length())
            {
                if (strcmp(keyms[i].name, elems[j]) == 0)
                {
                    ctrlpressed = true;
                    break;
                }
            }
        }
 
        if(!ctrlpressed) resetselections();
    }
    makesel(isdown);
}
 
// the core editing function. all the *xy functions perform the core operations
// and are also called directly from the network, the function below it is strictly
// triggered locally. They all have very similar structure.
 
void editheightxy(bool isfloor, int amount, block &sel)
{
    loopselxy(sel, if(isfloor)
    {
        s->floor += amount;
        if(s->floor>=s->ceil) s->floor = s->ceil-1;
    }
    else
    {
        s->ceil += amount;
        if(s->ceil<=s->floor) s->ceil = s->floor+1;
    });
}
 
void editheight(int *flr, int *amount)
{
    EDITSEL;
    bool isfloor = *flr==0;
    loopv(sels)
    {
        editheightxy(isfloor, *amount, sels[i]);
        addmsg(SV_EDITH, "ri6", sels[i].x, sels[i].y, sels[i].xs, sels[i].ys, isfloor, *amount);
    }
}
 
COMMAND(editheight, "ii");
 
// texture type : 0 floor, 1 wall, 2 ceil, 3 upper wall
 
void edittexxy(int type, int t, block &sel)
{
    loopselxy(sel, switch(type)
    {
        case 0: s->ftex = t; break;
        case 1: s->wtex = t; break;
        case 2: s->ctex = t; break;
        case 3: s->utex = t; break;
    });
}
 
void edittex(int type, int dir)
{
    EDITSEL;
    if(type<0 || type>3) return;
    if(type!=lasttype) { tofronttex(); lasttype = type; }
    int atype = type==3 ? 1 : type;
    int i = curedittex[atype];
    i = i<0 ? 0 : i+dir;
    curedittex[atype] = i = min(max(i, 0), 255);
    int t = lasttex = hdr.texlists[atype][i];
    loopv(sels)
    {
        edittexxy(type, t, sels[i]);
        addmsg(SV_EDITT, "ri6", sels[i].x, sels[i].y, sels[i].xs, sels[i].ys, type, t);
    }
}
 
void settex(int texture, int type)
{
    EDITSEL;
    if(type<0 || type>3) return;
    int atype = type==3 ? 1 : type;
    int t = -1;
    loopi(256) if(texture == (int)hdr.texlists[atype][i])
    {
        t = (int)hdr.texlists[atype][i];
        break;
    }
    if(t<0)
    {
        conoutf("invalid/unavaible texture");
        return;
    }
    loopv(sels)
    {
        edittexxy(type, t, sels[i]);
        addmsg(SV_EDITT, "ri6", sels[i].x, sels[i].y, sels[i].xs, sels[i].ys, type, t);
    }
}
 
void replace()
{
    EDITSELMP;
    loop(x,ssize) loop(y,ssize)
    {
        sqr *s = S(x, y);
        switch(lasttype)
        {
            case 0: if(s->ftex == rtex.ftex) s->ftex = lasttex; break;
            case 1: if(s->wtex == rtex.wtex) s->wtex = lasttex; break;
            case 2: if(s->ctex == rtex.ctex) s->ctex = lasttex; break;
            case 3: if(s->utex == rtex.utex) s->utex = lasttex; break;
        }
    }
    block b = { 0, 0, ssize, ssize };
    remip(b);
}
 
void edittypexy(int type, block &sel)
{
    loopselxy(sel, s->type = type);
}
 
void edittype(int type)
{
    EDITSEL;
    loopv(sels)
    {
        block &sel = sels[i];
        if(type==CORNER && (sel.xs!=sel.ys || sel.xs==3 || (sel.xs>4 && sel.xs!=8)
                       || sel.x&~-sel.xs || sel.y&~-sel.ys))
                       { conoutf("corner selection must be power of 2 aligned"); return; }
        edittypexy(type, sel);
        addmsg(SV_EDITS, "ri5", sel.x, sel.y, sel.xs, sel.ys, type);
    }
}
 
void heightfield(int *t) { edittype(*t==0 ? FHF : CHF); }
void solid(int *t)       { edittype(*t==0 ? SPACE : SOLID); }
void corner()           { edittype(CORNER); }
 
COMMAND(heightfield, "i");
COMMAND(solid, "i");
COMMAND(corner, "");
 
void editequalisexy(bool isfloor, block &sel)
{
    int low = 127, hi = -128;
    loopselxy(sel,
    {
        if(s->floor<low) low = s->floor;
        if(s->ceil>hi) hi = s->ceil;
    });
    loopselxy(sel,
    {
        if(isfloor) s->floor = low; else s->ceil = hi;
        if(s->floor>=s->ceil) s->floor = s->ceil-1;
    });
}
 
void equalize(int *flr)
{
    bool isfloor = *flr==0;
    EDITSEL;
    loopv(sels)
    {
        block &sel = sels[i];
        editequalisexy(isfloor, sel);
        addmsg(SV_EDITE, "ri5", sel.x, sel.y, sel.xs, sel.ys, isfloor);
    }
}
 
COMMAND(equalize, "i");
 
void setvdeltaxy(int delta, block &sel)
{
    loopselxy(sel, s->vdelta = max(s->vdelta+delta, 0));
    remipmore(sel);
}
 
void setvdelta(int delta)
{
    EDITSEL;
    loopv(sels)
    {
        setvdeltaxy(delta, sels[i]);
        addmsg(SV_EDITD, "ri5", sels[i].x, sels[i].y, sels[i].xs, sels[i].ys, delta);
    }
}
 
const int MAXARCHVERT = 50;
int archverts[MAXARCHVERT][MAXARCHVERT];
bool archvinit = false;
 
void archvertex(int *span, int *vert, int *delta)
{
    if(!archvinit)
    {
        archvinit = true;
        loop(s,MAXARCHVERT) loop(v,MAXARCHVERT) archverts[s][v] = 0;
    }
    if(*span>=MAXARCHVERT || *vert>=MAXARCHVERT || *span<0 || *vert<0) return;
    archverts[*span][*vert] = *delta;
}
 
void arch(int *sidedelta)
{
    EDITSELMP;
    loopv(sels)
    {
        block &sel = sels[i];
        sel.xs++;
        sel.ys++;
        if(sel.xs>MAXARCHVERT) sel.xs = MAXARCHVERT;
        if(sel.ys>MAXARCHVERT) sel.ys = MAXARCHVERT;
        loopselxy(sel, s->vdelta =
            sel.xs>sel.ys
                ? (archverts[sel.xs-1][x] + (y==0 || y==sel.ys-1 ? *sidedelta : 0))
                : (archverts[sel.ys-1][y] + (x==0 || x==sel.xs-1 ? *sidedelta : 0)));
        remipmore(sel);
    }
}
 
void slope(int xd, int yd)
{
    EDITSELMP;
    loopv(sels)
    {
        block &sel = sels[i];
        int off = 0;
        if(xd<0) off -= xd*sel.xs;
        if(yd<0) off -= yd*sel.ys;
        sel.xs++;
        sel.ys++;
        loopselxy(sel, s->vdelta = xd*x+yd*y+off);
        remipmore(sel);
    }
}
 
void perlin(int scale, int seed, int psize)
{
    EDITSELMP;
    loopv(sels)
    {
        block &sel = sels[i];
        sel.xs++;
        sel.ys++;
        makeundo(sel);
        sel.xs--;
        sel.ys--;
        perlinarea(sel, scale, seed, psize);
        sel.xs++;
        sel.ys++;
        remipmore(sel);
        sel.xs--;
        sel.ys--;
    }
}
 
VARF(fullbright, 0, 0, 1,
    if(fullbright)
    {
        //if(noteditmode("fullbright")) return;
        fullbrightlight();
    }
    else calclight();
);
 
void edittag(int *tag)
{
    EDITSELMP;
    loopselsxy(s->tag = *tag);
}
 
void newent(char *what, int *a1, int *a2, int *a3, int *a4)
{
    EDITSEL;
    loopv(sels)
    {
        int newindex = -1;
        loopvj(ents)
            if(ents[j].type == NOTUSED)
            {
                newindex = i;
                break;
            }
        newentity(newindex, sels[i].x, sels[i].y, (int)camera1->o.z, what, *a1, *a2, *a3, *a4);
    }
}
 
void movemap(int xo, int yo, int zo) // move whole map
{
    EDITMP;
    if(!worldbordercheck(MINBORD + max(-xo, 0), MINBORD + max(xo, 0), MINBORD + max(-yo, 0), MINBORD + max(yo, 0), max(zo, 0), max(-zo, 0)))
    {
        conoutf("not enough space to move the map");
        return;
    }
    if(xo || yo)
    {
        block b = { max(-xo, 0), max(-yo, 0), ssize - abs(xo), ssize - abs(yo) }, *cp = blockcopy(b);
        cp->x = max(xo, 0);
        cp->y = max(yo, 0);
        blockpaste(*cp);
        freeblock(cp);
    }
    if(zo)
    {
        loop(x, ssize) loop(y, ssize)
        {
            S(x,y)->floor = max(-128, S(x,y)->floor + zo);
            S(x,y)->ceil = min(127, S(x,y)->ceil + zo);
        }
        hdr.waterlevel += zo;
    }
    loopv(ents)
    {
        ents[i].x += xo;
        ents[i].y += yo;
        ents[i].z += zo;
        if(OUTBORD(ents[i].x, ents[i].y)) ents[i].type = NOTUSED;
    }
    player1->o.x += xo;
    player1->o.y += yo;
    entinmap(player1);
    calclight();
    resetmap(false);
}
 
void selfliprotate(block &sel, int dir)
{
    makeundo(sel);
    block *org = blockcopy(sel);
    const sqr *q = (const sqr *)(org + 1);
    int x1 = sel.x, x2 = sel.x + sel.xs - 1, y1 = sel.y, y2 = sel.y + sel.ys - 1, x, y;
    switch(dir)
    {
        case 1: // 90 degree clockwise
            for(x = x2; x >= x1; x--) for(y = y1; y <= y2; y++) *S(x,y) = *q++;
            break;
        case 2: // 180 degree
            for(y = y2; y >= y1; y--) for(x = x2; x >= x1; x--) *S(x,y) = *q++;
            break;
        case 3: // 90 degree counterclockwise
            for(x = x1; x <= x2; x++) for(y = y2; y >= y1; y--) *S(x,y) = *q++;
            break;
        case 11: // flip x-axis
            for(y = y1; y <= y2; y++) for(x = x2; x >= x1; x--) *S(x,y) = *q++;
            break;
        case 12: // flip y-axis
            for(y = y2; y >= y1; y--) for(x = x1; x <= x2; x++) *S(x,y) = *q++;
            break;
    }
    remipmore(sel);
    freeblock(org);
}
 
void selectionrotate(int dir)
{
    EDITSELMP;
    dir %= 4;
    if(dir < 0) dir += 4;
    if(!dir) return;
    loopv(sels)
    {
        block &sel = sels[i];
        if(sel.xs != sel.ys) dir = 2;
        selfliprotate(sel, dir);
    }
}
 
void selectionflip(char *axis)
{
    EDITSELMP;
    if(!axis || !*axis) return;
    char c = toupper(*axis);
    if(c != 'X' && c != 'Y') return;
    loopv(sels) selfliprotate(sels[i], c == 'X' ? 11 : 12);
}
 
COMMANDF(select, "iiii", (int *x, int *y, int *xs, int *ys) { resetselections(); addselection(*x, *y, *xs, *ys, 0); });
COMMANDF(addselection, "iiii", (int *x, int *y, int *xs, int *ys) { addselection(*x, *y, *xs, *ys, 0); });
COMMAND(resetselections, "");
COMMAND(edittag, "i");
COMMAND(replace, "");
COMMAND(archvertex, "iii");
COMMAND(arch, "i");
COMMANDF(slope, "ii", (int *xd, int *yd) { slope(*xd, *yd); });
COMMANDF(vdelta, "i", (int *d) { setvdelta(*d); });
COMMANDN(undo, editundo, "");
COMMAND(copy, "");
COMMAND(paste, "");
COMMANDF(edittex, "ii", (int *type, int *dir) { edittex(*type, *dir); });
COMMAND(newent, "siiii");
COMMANDF(perlin, "iii", (int *sc, int *se, int *ps) { perlin(*sc, *se, *ps); });
COMMANDF(movemap, "iii", (int *x, int *y, int *z) { movemap(*x, *y, *z); });
COMMANDF(selectionrotate, "i", (int *d) { selectionrotate(*d); });
COMMAND(selectionflip, "s");
COMMAND(countwalls, "i");
COMMANDF(settex, "ii", (int *texture, int *type) { settex(*texture, *type); });

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