/**
 * Powder Toy - Main source
 *
 * Copyright (c) 2008 - 2010 Stanislaw Skowronek.
 * Copyright (c) 2010 Simon Robertshaw
 * Copyright (c) 2010 Skresanov Savely
 * Copyright (c) 2010 Bryan Hoyle
 * Copyright (c) 2010 Nathan Cousins
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <SDL/SDL.h>
#include <bzlib.h>
#include <time.h>

#ifdef WIN32
#include <direct.h>
#else
#include <sys/stat.h>
#include <unistd.h>
#endif

#include "misc.h"
#include "font.h"
#include "defines.h"
#include "powder.h"
#include "graphics.h"
#include "version.h"
#include "http.h"
#include "md5.h"
#include "update.h"
#include "hmap.h"
#include "air.h"

char *it_msg =
    "\brThe Powder Toy\n"
    "\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\n"
    "\n"
    "\bgControl+C/V/X are Copy, Paste and cut respectively.\n"
    "\bgTo choose a material, hover over once of the icons on the right, it will show a selection of elements in that group.\n"
    "\bgPick your material from the menu using mouse left/right buttons.\n"
    "Draw freeform lines by dragging your mouse left/right button across the drawing area.\n"
    "Shift+drag will create straight lines of particles.\n"
    "Ctrl+drag will result in filled rectangles.\n"
    "Ctrl+Shift+click will flood-fill a closed area.\n"
    "Ctrl+Z will act as Undo.\n"
    "Middle click or Alt+Click to \"sample\" the particles.\n"
    "\n\boUse 'Z' for a zoom tool. Click to make the drawable zoom window stay around. Use the wheel to change the zoom strength\n"
    "Use 'S' to save parts of the window as 'stamps'.\n"
    "'L' will load the most recent stamp, 'K' shows a library of stamps you saved.\n"
    "'C' will cycle the display mode (Fire, Blob, Velocity and Pressure). The numbers 1 to 6 will do the same\n"
    "Use the mouse scroll wheel to change the tool size for particles.\n"
    "'Q' will quit the application.\n"
    "The spacebar can be used to pause physics.\n"
    "'P' will take a screenshot and save it into the current directory.\n"
    "\n"
    "\brhttp://powdertoy.co.uk/\n"
    "\bgCopyright (c) 2008-10 Stanislaw K Skowronek (\brhttp://powder.unaligned.org\bg, \bbirc.unaligned.org #wtf\bg)\n"
    "\bgCopyright (c) 2010 Simon Robertshaw (\brhttp://powdertoy.co.uk\bg, \bbirc.freenode.net #powder\bg)\n"
    "\bgCopyright (c) 2010 Skresanov Savely (Stickman)\n"
    "\bgCopyright (c) 2010 Bryan Hoyle (New elements)\n"
    "\bgCopyright (c) 2010 Nathan Cousins (New elements, small engine mods.)\n"
    "\n"
    "\bgSpecial thanks to Brian Ledbetter for maintaining ports.\n"
    "\bgTo use online features such as saving, you need to register at: \brhttp://powdertoy.co.uk/Register.html"
    ;

typedef struct
{
    int start, inc;
    pixel *vid;
} upstruc;

#ifdef BETA
char *old_ver_msg_beta = "A new beta is available - click here!";
#endif
char *old_ver_msg = "A new version is available - click here!";
float mheat = 0.0f;

int do_open = 0;
int sys_pause = 0;
int legacy_enable = 0; //Used to disable new features such as heat, will be set by commandline or save.
int death = 1, framerender = 0;
int amd = 1;

sign signs[MAXSIGNS];

int numCores = 4;

int core_count()
{
    int numCPU = 1;
#ifdef MT
#ifdef WIN32
    SYSTEM_INFO sysinfo;
    GetSystemInfo( &sysinfo );
    numCPU = sysinfo.dwNumberOfProcessors;
#else
#ifdef MACOSX
    numCPU = 4;
#else
    numCPU = sysconf( _SC_NPROCESSORS_ONLN );
#endif
#endif

    printf("Cpus: %d\n", numCPU);
    if(numCPU>1)
        printf("Multithreading enabled\n");
    else
        printf("Multithreading disabled\n");
#endif
    return numCPU;
}

int mousex, mousey = 0;  //They contain mouse position

void sdl_seticon(void)
{
#ifdef WIN32
    //SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon_w32, 32, 32, 32, 128, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
    //SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#else
#ifdef MACOSX
    //SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon_w32, 32, 32, 32, 128, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
    //SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#else
    SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon, 16, 16, 32, 128, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
    SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#endif
#endif
}

int frame_idx=0;
void dump_frame(pixel *src, int w, int h, int pitch)
{
    char frame_name[32];
    int j,i;
    unsigned char c[3];
    FILE *f;
    sprintf(frame_name,"frame%04d.ppm",frame_idx);
    f=fopen(frame_name,"wb");
    fprintf(f,"P6\n%d %d\n255\n",w,h);
    for(j=0; j<h; j++)
    {
        for(i=0; i<w; i++)
        {
            c[0] = PIXR(src[i]);
            c[1] = PIXG(src[i]);
            c[2] = PIXB(src[i]);
            fwrite(c,3,1,f);
        }
        src+=pitch;
    }
    fclose(f);
    frame_idx++;
}

/***********************************************************
 *                    STATE MANAGEMENT                     *
 ***********************************************************/

void *build_thumb(int *size, int bzip2)
{
    unsigned char *d=calloc(1,XRES*YRES), *c;
    int i,j,x,y;
    for(i=0; i<NPART; i++)
        if(parts[i].type)
        {
            x = (int)(parts[i].x+0.5f);
            y = (int)(parts[i].y+0.5f);
            if(x>=0 && x<XRES && y>=0 && y<YRES)
                d[x+y*XRES] = parts[i].type;
        }
    for(y=0; y<YRES/CELL; y++)
        for(x=0; x<XRES/CELL; x++)
            if(bmap[y][x])
                for(j=0; j<CELL; j++)
                    for(i=0; i<CELL; i++)
                        d[x*CELL+i+(y*CELL+j)*XRES] = 0xFF;
    j = XRES*YRES;

    if(bzip2)
    {
        i = (j*101+99)/100 + 608;
        c = malloc(i);

        c[0] = 0x53;
        c[1] = 0x68;
        c[2] = 0x49;
        c[3] = 0x74;
        c[4] = PT_NUM;
        c[5] = CELL;
        c[6] = XRES/CELL;
        c[7] = YRES/CELL;

        i -= 8;

        if(BZ2_bzBuffToBuffCompress((char *)(c+8), (unsigned *)&i, (char *)d, j, 9, 0, 0) != BZ_OK)
        {
            free(d);
            free(c);
            return NULL;
        }
        free(d);
        *size = i+8;
        return c;
    }

    *size = j;
    return d;
}

void *build_save(int *size, int x0, int y0, int w, int h)
{
    unsigned char *d=calloc(1,3*(XRES/CELL)*(YRES/CELL)+(XRES*YRES)*7+MAXSIGNS*262), *c;
    int i,j,x,y,p=0,*m=calloc(XRES*YRES, sizeof(int));
    int bx0=x0/CELL, by0=y0/CELL, bw=(w+CELL-1)/CELL, bh=(h+CELL-1)/CELL;

    // normalize coordinates
    x0 = bx0*CELL;
    y0 = by0*CELL;
    w  = bw *CELL;
    h  = bh *CELL;

    // save the required air state
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
            d[p++] = bmap[y][x];
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
            if(bmap[y][x]==4)
            {
                i = (int)(fvx[y][x]*64.0f+127.5f);
                if(i<0) i=0;
                if(i>255) i=255;
                d[p++] = i;
            }
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
            if(bmap[y][x]==4)
            {
                i = (int)(fvy[y][x]*64.0f+127.5f);
                if(i<0) i=0;
                if(i>255) i=255;
                d[p++] = i;
            }

    // save the particle map
    for(i=0; i<NPART; i++)
        if(parts[i].type)
        {
            x = (int)(parts[i].x+0.5f);
            y = (int)(parts[i].y+0.5f);
            if(x>=x0 && x<x0+w && y>=y0 && y<y0+h)
                m[(x-x0)+(y-y0)*w] = i+1;
        }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
            d[p++] = parts[i-1].type;
        else
            d[p++] = 0;
    }

    // save particle properties
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
        {
            i--;
            x = (int)(parts[i].vx*16.0f+127.5f);
            y = (int)(parts[i].vy*16.0f+127.5f);
            if(x<0) x=0;
            if(x>255) x=255;
            if(y<0) y=0;
            if(y>255) y=255;
            d[p++] = x;
            d[p++] = y;
        }
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
            d[p++] = (parts[i-1].life+3)/4;
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
        {
            unsigned char tttemp = (unsigned char)((parts[i-1].temp+(-MIN_TEMP))/((MAX_TEMP+(-MIN_TEMP))/255));
            //if(tttemp<0) tttemp=0;
            //if(tttemp>255) tttemp=255;
            d[p++] = tttemp;
        }
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i && (parts[i-1].type==PT_CLNE || parts[i-1].type==PT_SPRK || parts[i-1].type==PT_LAVA))
            d[p++] = parts[i-1].ctype;
    }

    j = 0;
    for(i=0; i<MAXSIGNS; i++)
        if(signs[i].text[0] &&
                signs[i].x>=x0 && signs[i].x<x0+w &&
                signs[i].y>=y0 && signs[i].y<y0+h)
            j++;
    d[p++] = j;
    for(i=0; i<MAXSIGNS; i++)
        if(signs[i].text[0] &&
                signs[i].x>=x0 && signs[i].x<x0+w &&
                signs[i].y>=y0 && signs[i].y<y0+h)
        {
            d[p++] = (signs[i].x-x0);
            d[p++] = (signs[i].x-x0)>>8;
            d[p++] = (signs[i].y-y0);
            d[p++] = (signs[i].y-y0)>>8;
            d[p++] = signs[i].ju;
            x = strlen(signs[i].text);
            d[p++] = x;
            memcpy(d+p, signs[i].text, x);
            p+=x;
        }

    i = (p*101+99)/100 + 612;
    c = malloc(i);
    c[0] = 0x66;
    c[1] = 0x75;
    c[2] = 0x43;
    c[3] = legacy_enable;
    c[4] = SAVE_VERSION;
    c[5] = CELL;
    c[6] = bw;
    c[7] = bh;
    c[8] = p;
    c[9] = p >> 8;
    c[10] = p >> 16;
    c[11] = p >> 24;

    i -= 12;

    if(BZ2_bzBuffToBuffCompress((char *)(c+12), (unsigned *)&i, (char *)d, p, 9, 0, 0) != BZ_OK)
    {
        free(d);
        free(c);
        return NULL;
    }
    free(d);

    *size = i+12;
    return c;
}

int parse_save(void *save, int size, int replace, int x0, int y0)
{
    unsigned char *d,*c=save;
    int i,j,k,x,y,p=0,*m=calloc(XRES*YRES, sizeof(int)), ver, pty, ty, legacy_beta=0;
    int bx0=x0/CELL, by0=y0/CELL, bw, bh, w, h;
    int fp[NPART], nf=0;

    if(size<16)
        return 1;
    if(c[2]!=0x43 || c[1]!=0x75 || c[0]!=0x66)
        return 1;
    if(c[4]>SAVE_VERSION)
        return 2;
    ver = c[4];

    if(ver<34)
    {
        legacy_enable = 1;
    }
    else
    {
        if(c[3]==1||c[3]==0)
            legacy_enable = c[3];
        else
            legacy_beta = 1;
    }

    bw = c[6];
    bh = c[7];
    if(bx0+bw > XRES/CELL)
        bx0 = XRES/CELL - bw;
    if(by0+bh > YRES/CELL)
        by0 = YRES/CELL - bh;
    if(bx0 < 0)
        bx0 = 0;
    if(by0 < 0)
        by0 = 0;

    if(c[5]!=CELL || bx0+bw>XRES/CELL || by0+bh>YRES/CELL)
        return 3;
    i = (unsigned)c[8];
    i |= ((unsigned)c[9])<<8;
    i |= ((unsigned)c[10])<<16;
    i |= ((unsigned)c[11])<<24;
    d = malloc(i);
    if(!d)
        return 1;

    if(BZ2_bzBuffToBuffDecompress((char *)d, (unsigned *)&i, (char *)(c+12), size-12, 0, 0))
        return 1;
    size = i;

    if(size < bw*bh)
        return 1;

    // normalize coordinates
    x0 = bx0*CELL;
    y0 = by0*CELL;
    w  = bw *CELL;
    h  = bh *CELL;

    if(replace)
    {
        memset(bmap, 0, sizeof(bmap));
        memset(emap, 0, sizeof(emap));
        memset(signs, 0, sizeof(signs));
        memset(parts, 0, sizeof(particle)*NPART);
        memset(pmap, 0, sizeof(pmap));
        memset(vx, 0, sizeof(vx));
        memset(vy, 0, sizeof(vy));
        memset(pv, 0, sizeof(pv));
    }

    // make a catalog of free parts
    memset(pmap, 0, sizeof(pmap));
    for(i=0; i<NPART; i++)
        if(parts[i].type)
        {
            x = (int)(parts[i].x+0.5f);
            y = (int)(parts[i].y+0.5f);
            pmap[y][x] = (i<<8)|1;
        }
        else
            fp[nf++] = i;

    // load the required air state
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
        {
            if(d[p])
                bmap[y][x] = d[p];
            p++;
        }
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
            if(d[(y-by0)*bw+(x-bx0)]==4)
            {
                if(p >= size)
                    goto corrupt;
                fvx[y][x] = (d[p++]-127.0f)/64.0f;
            }
    for(y=by0; y<by0+bh; y++)
        for(x=bx0; x<bx0+bw; x++)
            if(d[(y-by0)*bw+(x-bx0)]==4)
            {
                if(p >= size)
                    goto corrupt;
                fvy[y][x] = (d[p++]-127.0f)/64.0f;
            }

    // load the particle map
    i = 0;
    pty = p;
    for(y=y0; y<y0+h; y++)
        for(x=x0; x<x0+w; x++)
        {
            if(p >= size)
                goto corrupt;
            j=d[p++];
            if(j >= PT_NUM)
                goto corrupt;
            if(j && !(isplayer == 1 && j==PT_STKM))
            {
                if(pmap[y][x])
                {
                    k = pmap[y][x]>>8;
                    parts[k].type = j;
                    parts[k].x = (float)x;
                    parts[k].y = (float)y;
                    m[(x-x0)+(y-y0)*w] = k+1;
                }
                else if(i < nf)
                {
                    parts[fp[i]].type = j;
                    parts[fp[i]].x = (float)x;
                    parts[fp[i]].y = (float)y;
                    m[(x-x0)+(y-y0)*w] = fp[i]+1;
                    i++;
                }
                else
                    m[(x-x0)+(y-y0)*w] = NPART+1;
            }
        }

    // load particle properties
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
        {
            i--;
            if(p+1 >= size)
                goto corrupt;
            if(i < NPART)
            {
                parts[i].vx = (d[p++]-127.0f)/16.0f;
                parts[i].vy = (d[p++]-127.0f)/16.0f;
                if(parts[i].type == PT_STKM)
                {
                    player[2] = PT_DUST;

                    player[3] = parts[i].x-1;  //Setting legs positions
                    player[4] = parts[i].y+6;
                    player[5] = parts[i].x-1;
                    player[6] = parts[i].y+6;

                    player[7] = parts[i].x-3;
                    player[8] = parts[i].y+12;
                    player[9] = parts[i].x-3;
                    player[10] = parts[i].y+12;

                    player[11] = parts[i].x+1;
                    player[12] = parts[i].y+6;
                    player[13] = parts[i].x+1;
                    player[14] = parts[i].y+6;

                    player[15] = parts[i].x+3;
                    player[16] = parts[i].y+12;
                    player[17] = parts[i].x+3;
                    player[18] = parts[i].y+12;

                }
            }
            else
                p += 2;
        }
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        if(i)
        {
            if(p >= size)
                goto corrupt;
            if(i <= NPART)
                parts[i-1].life = d[p++]*4;
            else
                p++;
        }
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        ty = d[pty+j];
        if(i)
        {
            if(ver>=34&&legacy_beta==0)
            {
                if(p >= size)
                {
                    goto corrupt;
                }
                if(i <= NPART)
                {
                    parts[i-1].temp = (d[p++]*((MAX_TEMP+(-MIN_TEMP))/255))+MIN_TEMP;
                }
                else
                {
                    p++;
                }
            }
            else
            {
                parts[i-1].temp = ptypes[parts[i-1].type].heat;
            }
        }
    }
    for(j=0; j<w*h; j++)
    {
        i = m[j];
        ty = d[pty+j];
        if(i && (ty==PT_CLNE || (ty==PT_SPRK && ver>=21) || (ty==PT_LAVA && ver>=34)))
        {
            if(p >= size)
                goto corrupt;
            if(i <= NPART)
                parts[i-1].ctype = d[p++];
            else
                p++;
        }
    }

    if(p >= size)
        goto version1;
    j = d[p++];
    for(i=0; i<j; i++)
    {
        if(p+6 > size)
            goto corrupt;
        for(k=0; k<MAXSIGNS; k++)
            if(!signs[k].text[0])
                break;
        x = d[p++];
        x |= ((unsigned)d[p++])<<8;
        if(k<MAXSIGNS)
            signs[k].x = x+x0;
        x = d[p++];
        x |= ((unsigned)d[p++])<<8;
        if(k<MAXSIGNS)
            signs[k].y = x+y0;
        x = d[p++];
        if(k<MAXSIGNS)
            signs[k].ju = x;
        x = d[p++];
        if(p+x > size)
            goto corrupt;
        if(k<MAXSIGNS)
        {
            memcpy(signs[k].text, d+p, x);
            signs[k].text[x] = 0;
        }
        p += x;
    }

version1:
    free(d);

    return 0;

corrupt:
    if(replace)
    {
        legacy_enable = 0;
        memset(signs, 0, sizeof(signs));
        memset(parts, 0, sizeof(particle)*NPART);
        memset(bmap, 0, sizeof(bmap));
    }
    return 1;
}

// stamps library

stamp stamps[STAMP_MAX];//[STAMP_X*STAMP_Y];

int stamp_count = 0;

unsigned last_time=0, last_name=0;
void stamp_gen_name(char *fn)
{
    unsigned t=(unsigned)time(NULL);

    if(last_time!=t)
    {
        last_time=t;
        last_name=0;
    }
    else
        last_name++;

    sprintf(fn, "%08x%02x", last_time, last_name);
}

void stamp_update(void)
{
    FILE *f;
    int i;
    f=fopen("stamps" PATH_SEP "stamps.def", "wb");
    if(!f)
        return;
    for(i=0; i<STAMP_MAX; i++)
    {
        if(!stamps[i].name[0])
            break;
        if(stamps[i].dodelete!=1)
        {
            fwrite(stamps[i].name, 1, 10, f);
        }
    }
    fclose(f);
}

void stamp_gen_thumb(int i)
{
    char fn[64];
    void *data;
    int size, factor_x, factor_y;
    pixel *tmp;

    if(stamps[i].thumb)
    {
        free(stamps[i].thumb);
        stamps[i].thumb = NULL;
    }

    sprintf(fn, "stamps" PATH_SEP "%s.stm", stamps[i].name);
    data = file_load(fn, &size);

    if(data)
    {
        stamps[i].thumb = prerender_save(data, size, &(stamps[i].thumb_w), &(stamps[i].thumb_h));
        if(stamps[i].thumb && (stamps[i].thumb_w>XRES/GRID_S || stamps[i].thumb_h>YRES/GRID_S))
        {
            factor_x = ceil((float)stamps[i].thumb_w/(float)(XRES/GRID_S));
            factor_y = ceil((float)stamps[i].thumb_h/(float)(YRES/GRID_S));
            if(factor_y > factor_x)
                factor_x = factor_y;
            tmp = rescale_img(stamps[i].thumb, stamps[i].thumb_w, stamps[i].thumb_h, &(stamps[i].thumb_w), &(stamps[i].thumb_h), factor_x);
            free(stamps[i].thumb);
            stamps[i].thumb = tmp;
        }
    }

    free(data);
}

int clipboard_ready = 0;
void *clipboard_data = 0;
int clipboard_length = 0;

void stamp_save(int x, int y, int w, int h)
{
    FILE *f;
    int n;
    char fn[64], sn[16];
    void *s=build_save(&n, x, y, w, h);

#ifdef WIN32
    _mkdir("stamps");
#else
    mkdir("stamps", 0755);
#endif

    stamp_gen_name(sn);
    sprintf(fn, "stamps" PATH_SEP "%s.stm", sn);

    f = fopen(fn, "wb");
    if(!f)
        return;
    fwrite(s, n, 1, f);
    fclose(f);

    free(s);

    if(stamps[STAMP_MAX-1].thumb)
        free(stamps[STAMP_MAX-1].thumb);
    memmove(stamps+1, stamps, sizeof(struct stamp)*(STAMP_MAX-1));
    memset(stamps, 0, sizeof(struct stamp));
    if(stamp_count<STAMP_MAX)
        stamp_count++;

    strcpy(stamps[0].name, sn);
    stamp_gen_thumb(0);

    stamp_update();
}

void *stamp_load(int i, int *size)
{
    void *data;
    char fn[64];
    struct stamp tmp;

    if(!stamps[i].thumb || !stamps[i].name[0])
        return NULL;

    sprintf(fn, "stamps" PATH_SEP "%s.stm", stamps[i].name);
    data = file_load(fn, size);
    if(!data)
        return NULL;

    if(i>0)
    {
        memcpy(&tmp, stamps+i, sizeof(struct stamp));
        memmove(stamps+1, stamps, sizeof(struct stamp)*i);
        memcpy(stamps, &tmp, sizeof(struct stamp));

        stamp_update();
    }

    return data;
}

void stamp_init(void)
{
    int i;
    FILE *f;

    memset(stamps, 0, sizeof(stamps));

    f=fopen("stamps" PATH_SEP "stamps.def", "rb");
    if(!f)
        return;
    for(i=0; i<STAMP_MAX; i++)
    {
        fread(stamps[i].name, 1, 10, f);
        if(!stamps[i].name[0])
            break;
        stamp_count++;
        stamp_gen_thumb(i);
    }
    fclose(f);
}

void del_stamp(int d)
{
    stamps[d].dodelete = 1;
    stamp_update();
    stamp_count = 0;
    stamp_init();
}

void thumb_cache_inval(char *id);

char *thumb_cache_id[THUMB_CACHE_SIZE];
void *thumb_cache_data[THUMB_CACHE_SIZE];
int thumb_cache_size[THUMB_CACHE_SIZE];
int thumb_cache_lru[THUMB_CACHE_SIZE];

void thumb_cache_inval(char *id)
{
    int i,j;
    for(i=0; i<THUMB_CACHE_SIZE; i++)
        if(thumb_cache_id[i] && !strcmp(id, thumb_cache_id[i]))
            break;
    if(i >= THUMB_CACHE_SIZE)
        return;
    free(thumb_cache_id[i]);
    free(thumb_cache_data[i]);
    thumb_cache_id[i] = NULL;
    for(j=0; j<THUMB_CACHE_SIZE; j++)
        if(thumb_cache_lru[j] > thumb_cache_lru[i])
            thumb_cache_lru[j]--;
}
void thumb_cache_add(char *id, void *thumb, int size)
{
    int i,m=-1,j=-1;
    thumb_cache_inval(id);
    for(i=0; i<THUMB_CACHE_SIZE; i++)
    {
        if(!thumb_cache_id[i])
            break;
        if(thumb_cache_lru[i] > m)
        {
            m = thumb_cache_lru[i];
            j = i;
        }
    }
    if(i >= THUMB_CACHE_SIZE)
    {
        thumb_cache_inval(thumb_cache_id[j]);
        i = j;
    }
    for(j=0; j<THUMB_CACHE_SIZE; j++)
        thumb_cache_lru[j] ++;
    thumb_cache_id[i] = mystrdup(id);
    thumb_cache_data[i] = malloc(size);
    memcpy(thumb_cache_data[i], thumb, size);
    thumb_cache_size[i] = size;
    thumb_cache_lru[i] = 0;
}
int thumb_cache_find(char *id, void **thumb, int *size)
{
    int i,j;
    for(i=0; i<THUMB_CACHE_SIZE; i++)
        if(thumb_cache_id[i] && !strcmp(id, thumb_cache_id[i]))
            break;
    if(i >= THUMB_CACHE_SIZE)
        return 0;
    for(j=0; j<THUMB_CACHE_SIZE; j++)
        if(thumb_cache_lru[j] < thumb_cache_lru[i])
            thumb_cache_lru[j]++;
    thumb_cache_lru[i] = 0;
    *thumb = malloc(thumb_cache_size[i]);
    *size = thumb_cache_size[i];
    memcpy(*thumb, thumb_cache_data[i], *size);
    return 1;
}

char http_proxy_string[256] = "";

unsigned char last_major=0, last_minor=0, update_flag=0;

char *tag = "(c) 2008-9 Stanislaw Skowronek";
int itc = 0;
char itc_msg[64] = "[?]";

char my_uri[] = "http://" SERVER "/Update.api?Action=Download&Architecture="
#if defined WIN32
                "Windows32"
#elif defined LIN32
                "Linux32"
#elif defined LIN64
                "Linux64"
#elif defined MACOSX
                "MacOSX"
#else
                "Unknown"
#endif
                "&InstructionSet="
#if defined X86_SSE3
                "SSE3"
#elif defined X86_SSE2
                "SSE2"
#elif defined X86_SSE
                "SSE"
#else
                "SSE"
#endif
                ;
int main(int argc, char *argv[])
{
    int hud_enable = 1;
    int active_menu = 0;
#ifdef BETA
    int is_beta = 0;
#endif
    char uitext[48] = "";
    char heattext[64] = "";
    int currentTime = 0;
    int FPS = 0, FPSB = 0;
    int pastFPS = 0;
    int past = 0;
    pixel *vid_buf=calloc((XRES+BARSIZE)*(YRES+MENUSIZE), PIXELSIZE);
    void *http_ver_check;
    char *ver_data=NULL, *tmp;
    int i, j, bq, fire_fc=0, do_check=0, old_version=0, http_ret=0, major, minor, old_ver_len;
#ifdef INTERNAL
    int vs = 0;
#endif
    int x, y, b = 0, sl=1, sr=0, su=0, c, lb = 0, lx = 0, ly = 0, lm = 0;//, tx, ty;
    int da = 0, db = 0, it = 2047, mx, my, bs = 2;
    float nfvx, nfvy;
    int load_mode=0, load_w=0, load_h=0, load_x=0, load_y=0, load_size=0;
    void *load_data=NULL;
    pixel *load_img=NULL;//, *fbi_img=NULL;
    int save_mode=0, save_x=0, save_y=0, save_w=0, save_h=0, copy_mode=0;

#ifdef MT
    numCores = core_count();
#endif

#ifdef BETA
    if(is_beta)
    {
        old_ver_len = textwidth(old_ver_msg_beta);
    }
    else
    {
        old_ver_len = textwidth(old_ver_msg);
    }
#else
    old_ver_len = textwidth(old_ver_msg);
#endif
    menu_count();
    parts = calloc(sizeof(particle), NPART);
    cb_parts = calloc(sizeof(particle), NPART);
    for(i=0; i<NPART-1; i++)
        parts[i].life = i+1;
    parts[NPART-1].life = -1;
    pfree = 0;
    fire_bg=calloc(XRES*YRES, PIXELSIZE);
    memset(signs, 0, sizeof(signs));

    //fbi_img = render_packed_rgb(fbi, FBI_W, FBI_H, FBI_CMP);

    load_presets();

    for(i=1; i<argc; i++)
    {
        if(!strncmp(argv[i], "scale:", 6))
        {
            sdl_scale = (argv[i][6]=='2') ? 2 : 1;
        }
        else if(!strncmp(argv[i], "proxy:", 6))
        {
            memset(http_proxy_string, 0, sizeof(http_proxy_string));
            strncpy(http_proxy_string, argv[i]+6, 255);
        }
        else if(!strncmp(argv[i], "nohud", 5))
        {
            hud_enable = 0;
        }
    }

    save_presets(0);

    make_kernel();
    prepare_alpha();

    stamp_init();

    sdl_open();
    http_init(http_proxy_string[0] ? http_proxy_string : NULL);

    if(cpu_check())
    {
        error_ui(vid_buf, 0, "Unsupported CPU. Try another version.");
        return 1;
    }

#ifdef BETA
    http_ver_check = http_async_req_start(NULL, "http://" SERVER "/Update.api?Action=CheckVersion", NULL, 0, 0);
#else
    http_ver_check = http_async_req_start(NULL, "http://" SERVER "/Update.api?Action=CheckVersion", NULL, 0, 0);
#endif

    while(!sdl_poll())
    {
        for(i=0; i<YRES/CELL; i++)
        {
            pv[i][0] = pv[i][0]*0.8f;
            pv[i][1] = pv[i][1]*0.8f;
            pv[i][2] = pv[i][2]*0.8f;
            pv[i][XRES/CELL-2] = pv[i][XRES/CELL-2]*0.8f;
            pv[i][XRES/CELL-1] = pv[i][XRES/CELL-1]*0.8f;
            vx[i][0] = vx[i][1]*0.9f;
            vx[i][1] = vx[i][2]*0.9f;
            vx[i][XRES/CELL-2] = vx[i][XRES/CELL-3]*0.9f;
            vx[i][XRES/CELL-1] = vx[i][XRES/CELL-2]*0.9f;
            vy[i][0] = vy[i][1]*0.9f;
            vy[i][1] = vy[i][2]*0.9f;
            vy[i][XRES/CELL-2] = vy[i][XRES/CELL-3]*0.9f;
            vy[i][XRES/CELL-1] = vy[i][XRES/CELL-2]*0.9f;
        }
        for(i=0; i<XRES/CELL; i++)
        {
            pv[0][i] = pv[0][i]*0.8f;
            pv[1][i] = pv[1][i]*0.8f;
            pv[2][i] = pv[2][i]*0.8f;
            pv[YRES/CELL-2][i] = pv[YRES/CELL-2][i]*0.8f;
            pv[YRES/CELL-1][i] = pv[YRES/CELL-1][i]*0.8f;
            vx[0][i] = vx[1][i]*0.9f;
            vx[1][i] = vx[2][i]*0.9f;
            vx[YRES/CELL-2][i] = vx[YRES/CELL-3][i]*0.9f;
            vx[YRES/CELL-1][i] = vx[YRES/CELL-2][i]*0.9f;
            vy[0][i] = vy[1][i]*0.9f;
            vy[1][i] = vy[2][i]*0.9f;
            vy[YRES/CELL-2][i] = vy[YRES/CELL-3][i]*0.9f;
            vy[YRES/CELL-1][i] = vy[YRES/CELL-2][i]*0.9f;
        }

        for(j=1; j<YRES/CELL; j++)
        {
            for(i=1; i<XRES/CELL; i++)
            {
                if(bmap[j][i]==1 || bmap[j][i]==8 || (bmap[j][i]==7 && !emap[j][i]))
                {
                    vx[j][i] = 0.0f;
                    vx[j][i-1] = 0.0f;
                    vy[j][i] = 0.0f;
                    vy[j-1][i] = 0.0f;
                }
            }
        }

        if(!sys_pause||framerender)
        {
            update_air();
        }
#ifdef OpenGL
		ClearScreen();
#else
        if(cmode==0 || cmode==1)
        {
            draw_air(vid_buf);
        }
        else if(cmode==2)
        {
            memcpy(vid_buf, fire_bg, XRES*YRES*PIXELSIZE);
            memset(vid_buf+(XRES*YRES), 0, ((XRES+BARSIZE)*YRES*PIXELSIZE)-(XRES*YRES*PIXELSIZE));
        }
        else
        {
            memset(vid_buf, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
        }
#endif
        update_particles(vid_buf);
		draw_parts(vid_buf);

        if(cmode==2)
        {
            if(!fire_fc)
            {
                dim_copy(fire_bg, vid_buf);
            }
            else
            {
                memcpy(fire_bg, vid_buf, XRES*YRES*PIXELSIZE);
            }
            fire_fc = (fire_fc+1) % 3;
        }
        if(cmode==3||cmode==4||cmode==6)
            render_fire(vid_buf);

        render_signs(vid_buf);

        memset(vid_buf+((XRES+BARSIZE)*YRES), 0, (PIXELSIZE*(XRES+BARSIZE))*MENUSIZE);
        clearrect(vid_buf, XRES-1, 0, BARSIZE+1, YRES);

        draw_svf_ui(vid_buf);

        if(http_ver_check)
        {
            if(!do_check && http_async_req_status(http_ver_check))
            {
                ver_data = http_async_req_stop(http_ver_check, &http_ret, NULL);
                if(http_ret==200 && ver_data)
                {
#ifdef BETA
                    if(sscanf(ver_data, "%d.%d.%d", &major, &minor, &is_beta)==3)
                        if(major>SAVE_VERSION || (major==SAVE_VERSION && minor>MINOR_VERSION) || (major==SAVE_VERSION && is_beta == 0))
                            old_version = 1;
#else
                    if(sscanf(ver_data, "%d.%d", &major, &minor)==2)
                        if(major>SAVE_VERSION || (major==SAVE_VERSION && minor>MINOR_VERSION))
                            old_version = 1;
#endif
                    free(ver_data);
                }
                http_ver_check = NULL;
            }
            do_check = (do_check+1) & 15;
        }

        if(sdl_key=='q' || sdl_key==SDLK_ESCAPE)
        {
            if(confirm_ui(vid_buf, "You are about to quit", "Are you sure you want to quit?", "Quit"))
            {
                break;
            }
        }
		if(sdl_key=='d')
		{
			death = !(death);
		}
		if(sdl_key=='f')
		{
			framerender = 1;
		}
        if((sdl_key=='l' || sdl_key=='k') && stamps[0].name[0])
        {
            if(load_mode)
            {
                free(load_img);
                free(load_data);
                load_mode = 0;
                load_data = NULL;
                load_img = NULL;
            }
            if(it > 50)
                it = 50;
            if(sdl_key=='k' && stamps[1].name[0])
            {
                j = stamp_ui(vid_buf);
                if(j>=0)
                    load_data = stamp_load(j, &load_size);
                else
                    load_data = NULL;
            }
            else
                load_data = stamp_load(0, &load_size);
            if(load_data)
            {
                load_img = prerender_save(load_data, load_size, &load_w, &load_h);
                if(load_img)
                    load_mode = 1;
                else
                    free(load_data);
            }
        }
        if(sdl_key=='s')
        {
            if(it > 50)
                it = 50;
            save_mode = 1;
        }
        if(sdl_key=='1')
        {
            set_cmode(0);
        }
        if(sdl_key=='2')
        {
            set_cmode(1);
        }
        if(sdl_key=='3')
        {
            set_cmode(2);
        }
        if(sdl_key=='4')
        {
            set_cmode(3);
        }
        if(sdl_key=='5')
        {
            set_cmode(4);
        }
        if(sdl_key=='6')
        {
            set_cmode(5);
        }
        if(sdl_key=='7')
        {
            set_cmode(6);
        }
        if(sdl_key==SDLK_SPACE)
            sys_pause = !sys_pause;
        if(sdl_key=='h')
            hud_enable = !hud_enable;
        if(sdl_key=='p')
            dump_frame(vid_buf, XRES, YRES, XRES);
        if(sdl_key=='v'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
        {
            if(clipboard_ready==1)
            {
                load_data = malloc(clipboard_length);
                memcpy(load_data, clipboard_data, clipboard_length);
                load_size = clipboard_length;
                if(load_data)
                {
                    load_img = prerender_save(load_data, load_size, &load_w, &load_h);
                    if(load_img)
                        load_mode = 1;
                    else
                        free(load_data);
                }
            }
        }
        if(sdl_key=='x'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
        {
            save_mode = 1;
            copy_mode = 2;
        }
        if(sdl_key=='c'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
        {
            save_mode = 1;
            copy_mode = 1;
        }
        else if(sdl_key=='c')
        {
            set_cmode((cmode+1) % 7);
            if(it > 50)
                it = 50;
        }
        if(sdl_key=='z'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL))) // Undo
        {
            int cbx, cby, cbi;

            for(cbi=0; cbi<NPART; cbi++)
                parts[cbi] = cb_parts[cbi];

            for(cby = 0; cby<YRES; cby++)
                for(cbx = 0; cbx<XRES; cbx++)
                    pmap[cby][cbx] = cb_pmap[cby][cbx];

            for(cby = 0; cby<(YRES/CELL); cby++)
                for(cbx = 0; cbx<(XRES/CELL); cbx++)
                {
                    vx[cby][cbx] = cb_vx[cby][cbx];
                    vy[cby][cbx] = cb_vy[cby][cbx];
                    pv[cby][cbx] = cb_pv[cby][cbx];
                    bmap[cby][cbx] = cb_bmap[cby][cbx];
                    emap[cby][cbx] = cb_emap[cby][cbx];
                }
        }
#ifdef INTERNAL
        if(sdl_key=='v')
            vs = !vs;
        if(vs)
            dump_frame(vid_buf, XRES, YRES, XRES);
#endif

        if(sdl_wheel)
        {
            if(sdl_zoom_trig==1)
            {
                ZSIZE += sdl_wheel;
                if(ZSIZE>32)
                    ZSIZE = 32;
                if(ZSIZE<2)
                    ZSIZE = 2;
                ZFACTOR = 256/ZSIZE;
                sdl_wheel = 0;
            }
            else
            {
                bs += sdl_wheel;
                if(bs>1224)
                    bs = 1224;
                if(bs<0)
                    bs = 0;
                sdl_wheel = 0;
                /*if(su >= PT_NUM) {
                	if(sl < PT_NUM)
                		su = sl;
                	if(sr < PT_NUM)
                		su = sr;
                }*/
            }
        }

        bq = b;
        b = SDL_GetMouseState(&x, &y);

        for(i=0; i<SC_TOTAL; i++)
        {
            draw_menu(vid_buf, i, active_menu);
        }

        for(i=0; i<SC_TOTAL; i++)
        {
            if(!b&&x>=sdl_scale*(XRES-2) && x<sdl_scale*(XRES+BARSIZE-1) &&y>= sdl_scale*((i*16)+YRES+MENUSIZE-16-(SC_TOTAL*16)) && y<sdl_scale*((i*16)+YRES+MENUSIZE-16-(SC_TOTAL*16)+15))
            {
                active_menu = i;
            }
        }
        menu_ui_v3(vid_buf, active_menu, &sl, &sr, b, bq, x, y);

        if(zoom_en && x>=sdl_scale*zoom_wx && y>=sdl_scale*zoom_wy
                && x<sdl_scale*(zoom_wx+ZFACTOR*ZSIZE)
                && y<sdl_scale*(zoom_wy+ZFACTOR*ZSIZE))
        {
            x = (((x/sdl_scale-zoom_wx)/ZFACTOR)+zoom_x)*sdl_scale;
            y = (((y/sdl_scale-zoom_wy)/ZFACTOR)+zoom_y)*sdl_scale;
        }
        if(y>0 && y<sdl_scale*YRES && x>0 && x<sdl_scale*XRES)
        {
            int cr;
            cr = pmap[y/sdl_scale][x/sdl_scale];
            if(!((cr>>8)>=NPART || !cr))
            {
#ifdef BETA
                sprintf(heattext, "%s, Pressure: %3.2f, Temp: %4.2f C, Life: %d", ptypes[cr&0xFF].name, pv[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL], parts[cr>>8].temp, parts[cr>>8].life);
#else
                sprintf(heattext, "%s, Pressure: %3.2f, Temp: %4.2f C", ptypes[cr&0xFF].name, pv[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL], parts[cr>>8].temp);
#endif
            }
            else
            {
                sprintf(heattext, "Empty, Pressure: %3.2f", pv[(y/sdl_scale)/CELL][(x/sdl_scale)/CELL]);
            }
        }
        mx = x;
        my = y;
        if(update_flag)
        {
            info_box(vid_buf, "Finalizing update...");
            if(last_major>SAVE_VERSION || (last_major==SAVE_VERSION && last_minor>=MINOR_VERSION))
            {
                update_cleanup();
                error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
            }
            else
            {
                if(update_finish())
                    error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
                else
                    info_ui(vid_buf, "Update success", "You have successfully updated the Powder Toy!");
            }
            update_flag = 0;
        }

        if(b && !bq && x>=(XRES-19-old_ver_len)*sdl_scale &&
                x<=(XRES-14)*sdl_scale && y>=(YRES-22)*sdl_scale && y<=(YRES-9)*sdl_scale && old_version)
        {
            tmp = malloc(64);
#ifdef BETA
            if(is_beta)
            {
                sprintf(tmp, "Your version: %d (Beta %d), new version: %d (Beta %d).", SAVE_VERSION, MINOR_VERSION, major, minor);
            }
            else
            {
                sprintf(tmp, "Your version: %d (Beta %d), new version: %d.%d.", SAVE_VERSION, MINOR_VERSION, major, minor);
            }
#else
            sprintf(tmp, "Your version: %d.%d, new version: %d.%d.", SAVE_VERSION, MINOR_VERSION, major, minor);
#endif
            if(confirm_ui(vid_buf, "Do you want to update The Powder Toy?", tmp, "Update"))
            {
                free(tmp);
                tmp = download_ui(vid_buf, my_uri, &i);
                if(tmp)
                {
                    save_presets(1);
                    if(update_start(tmp, i))
                    {
                        update_cleanup();
                        save_presets(0);
                        error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
                    }
                    else
                        return 0;
                }
            }
            else
                free(tmp);
        }
        if(y>=sdl_scale*(YRES+(MENUSIZE-20)))
        {
            if(x>=189*sdl_scale && x<=202*sdl_scale && svf_login && svf_open && svf_myvote==0)
            {
                db = svf_own ? 275 : 272;
                if(da < 51)
                    da ++;
            }
            else if(x>=204 && x<=217 && svf_login && svf_open && svf_myvote==0)
            {
                db = svf_own ? 275 : 272;
                if(da < 51)
                    da ++;
            }
            else if(x>=189 && x<=217 && svf_login && svf_open && svf_myvote!=0)
            {
                db = (svf_myvote==1) ? 273 : 274;
                if(da < 51)
                    da ++;
            }
            else if(x>=219*sdl_scale && x<=((XRES+BARSIZE-(510-349))*sdl_scale) && svf_login && svf_open)
            {
                db = svf_own ? 257 : 256;
                if(da < 51)
                    da ++;
            }
            else if(x>=((XRES+BARSIZE-(510-351))*sdl_scale) && x<((XRES+BARSIZE-(510-366))*sdl_scale))
            {
                db = 270;
                if(da < 51)
                    da ++;
            }
            else if(x>=((XRES+BARSIZE-(510-367))*sdl_scale) && x<((XRES+BARSIZE-(510-383))*sdl_scale))
            {
                db = 266;
                if(da < 51)
                    da ++;
            }
            else if(x>=37*sdl_scale && x<=187*sdl_scale && svf_login)
            {
                db = 259;
                if(svf_open && svf_own && x<=55*sdl_scale)
                    db = 258;
                if(da < 51)
                    da ++;
            }
            else if(x>=((XRES+BARSIZE-(510-385))*sdl_scale) && x<=((XRES+BARSIZE-(510-476))*sdl_scale))
            {
                db = svf_login ? 261 : 260;
                if(svf_admin)
                {
                    db = 268;
                }
                else if(svf_mod)
                {
                    db = 271;
                }
                if(da < 51)
                    da ++;
            }
            else if(x>=sdl_scale && x<=17*sdl_scale)
            {
                db = 262;
                if(da < 51)
                    da ++;
            }
            else if(x>=((XRES+BARSIZE-(510-494))*sdl_scale) && x<=((XRES+BARSIZE-(510-509))*sdl_scale))
            {
                db = sys_pause ? 264 : 263;
                if(da < 51)
                    da ++;
            }
            else if(x>=((XRES+BARSIZE-(510-476))*sdl_scale) && x<=((XRES+BARSIZE-(510-491))*sdl_scale))
            {
                db = 267;
                if(da < 51)
                    da ++;
            }
            else if(x>=19*sdl_scale && x<=35*sdl_scale && svf_open)
            {
                db = 265;
                if(da < 51)
                    da ++;
            }
            else if(da > 0)
                da --;
        }
        else if(da > 0)
            da --;

        if(!sdl_zoom_trig && zoom_en==1)
            zoom_en = 0;

        if(sdl_key==Z_keysym && zoom_en==2)
            zoom_en = 1;

        if(load_mode)
        {
            load_x = CELL*((mx/sdl_scale-load_w/2+CELL/2)/CELL);
            load_y = CELL*((my/sdl_scale-load_h/2+CELL/2)/CELL);
            if(load_x+load_w>XRES) load_x=XRES-load_w;
            if(load_y+load_h>YRES) load_y=YRES-load_h;
            if(load_x<0) load_x=0;
            if(load_y<0) load_y=0;
            if(bq==1 && !b)
            {
                parse_save(load_data, load_size, 0, load_x, load_y);
                free(load_data);
                free(load_img);
                load_mode = 0;
            }
            else if(bq==4 && !b)
            {
                free(load_data);
                free(load_img);
                load_mode = 0;
            }
        }
        else if(save_mode==1)
        {
            save_x = (mx/sdl_scale)/CELL;
            save_y = (my/sdl_scale)/CELL;
            if(save_x >= XRES/CELL) save_x = XRES/CELL-1;
            if(save_y >= YRES/CELL) save_y = YRES/CELL-1;
            save_w = 1;
            save_h = 1;
            if(b==1)
            {
                save_mode = 2;
            }
            else if(b==4)
            {
                save_mode = 0;
                copy_mode = 0;
            }
        }
        else if(save_mode==2)
        {
            save_w = (mx/sdl_scale+CELL/2)/CELL - save_x;
            save_h = (my/sdl_scale+CELL/2)/CELL - save_y;
            if(save_w>XRES/CELL) save_w = XRES/CELL;
            if(save_h>YRES/CELL) save_h = YRES/CELL;
            if(save_w<1) save_w = 1;
            if(save_h<1) save_h = 1;
            if(!b)
            {
                if(copy_mode==1)
                {
                    clipboard_data=build_save(&clipboard_length, save_x*CELL, save_y*CELL, save_w*CELL, save_h*CELL);
                    clipboard_ready = 1;
                    save_mode = 0;
                    copy_mode = 0;
                }
                else if(copy_mode==2)
                {
                    clipboard_data=build_save(&clipboard_length, save_x*CELL, save_y*CELL, save_w*CELL, save_h*CELL);
                    clipboard_ready = 1;
                    save_mode = 0;
                    copy_mode = 0;
                    clear_area(save_x*CELL, save_y*CELL, save_w*CELL, save_h*CELL);
                }
                else
                {
                    stamp_save(save_x*CELL, save_y*CELL, save_w*CELL, save_h*CELL);
                    save_mode = 0;
                }
            }
        }
        else if(sdl_zoom_trig && zoom_en<2)
        {
            x /= sdl_scale;
            y /= sdl_scale;
            x -= ZSIZE/2;
            y -= ZSIZE/2;
            if(x<0) x=0;
            if(y<0) y=0;
            if(x>XRES-ZSIZE) x=XRES-ZSIZE;
            if(y>YRES-ZSIZE) y=YRES-ZSIZE;
            zoom_x = x;
            zoom_y = y;
            zoom_wx = (x<XRES/2) ? XRES-ZSIZE*ZFACTOR : 0;
            zoom_wy = 0;
            zoom_en = 1;
            if(!b && bq)
                zoom_en = 2;
        }
        else if(b)
        {
            if(it > 50)
                it = 50;
            x /= sdl_scale;
            y /= sdl_scale;
            if(y>=YRES+(MENUSIZE-20))
            {
                if(!lb)
                {
                    if(x>=189 && x<=202 && svf_login && svf_open && svf_myvote==0 && svf_own==0)
                    {
                        if(execute_vote(vid_buf, svf_id, "Up"))
                        {
                            svf_myvote = 1;
                        }
                    }
                    if(x>=204 && x<=217 && svf_login && svf_open && svf_myvote==0 && svf_own==0)
                    {
                        if(execute_vote(vid_buf, svf_id, "Down"))
                        {
                            svf_myvote = -1;
                        }
                    }
                    if(x>=219 && x<=(XRES+BARSIZE-(510-349)) && svf_login && svf_open)
                        tag_list_ui(vid_buf);
                    if(x>=(XRES+BARSIZE-(510-351)) && x<(XRES+BARSIZE-(510-366)) && !bq)
                    {
                        legacy_enable = !legacy_enable;
                    }
                    if(x>=(XRES+BARSIZE-(510-367)) && x<=(XRES+BARSIZE-(510-383)) && !bq)
                    {
                        memset(signs, 0, sizeof(signs));
                        memset(pv, 0, sizeof(pv));
                        memset(vx, 0, sizeof(vx));
                        memset(vy, 0, sizeof(vy));
                        memset(fvx, 0, sizeof(fvx));
                        memset(fvy, 0, sizeof(fvy));
                        memset(bmap, 0, sizeof(bmap));
                        memset(emap, 0, sizeof(emap));
                        memset(parts, 0, sizeof(particle)*NPART);
                        for(i=0; i<NPART-1; i++)
                            parts[i].life = i+1;
                        parts[NPART-1].life = -1;
                        pfree = 0;

                        legacy_enable = 0;
                        svf_myvote = 0;
                        svf_open = 0;
                        svf_publish = 0;
                        svf_own = 0;
                        svf_id[0] = 0;
                        svf_name[0] = 0;
                        svf_tags[0] = 0;

                        memset(fire_bg, 0, XRES*YRES*PIXELSIZE);
                        memset(fire_r, 0, sizeof(fire_r));
                        memset(fire_g, 0, sizeof(fire_g));
                        memset(fire_b, 0, sizeof(fire_b));
                    }
                    if(x>=(XRES+BARSIZE-(510-385)) && x<=(XRES+BARSIZE-(510-476)))
                    {
                        login_ui(vid_buf);
                        if(svf_login)
                            save_presets(0);
                    }
                    if(x>=37 && x<=187 && svf_login)
                    {
                        if(!svf_open || !svf_own || x>51)
                        {
                            if(save_name_ui(vid_buf))
                                execute_save(vid_buf);
                        }
                        else
                            execute_save(vid_buf);
                        while(!sdl_poll())
                            if(!SDL_GetMouseState(&x, &y))
                                break;
                        b = bq = 0;
                    }
                    if(x>=1 && x<=17)
                    {
                        search_ui(vid_buf);
                        memset(fire_bg, 0, XRES*YRES*PIXELSIZE);
                        memset(fire_r, 0, sizeof(fire_r));
                        memset(fire_g, 0, sizeof(fire_g));
                        memset(fire_b, 0, sizeof(fire_b));
                    }
                    if(x>=19 && x<=35 && svf_last && svf_open)
                        parse_save(svf_last, svf_lsize, 1, 0, 0);
                    if(x>=(XRES+BARSIZE-(510-476)) && x<=(XRES+BARSIZE-(510-491)) && !bq)
                    {
                        if(b & SDL_BUTTON_LMASK)
                            set_cmode((cmode+1) % 7);
                        if(b & SDL_BUTTON_RMASK)
                            set_cmode((cmode+6) % 7);
                        save_presets(0);
                    }
                    if(x>=(XRES+BARSIZE-(510-494)) && x<=(XRES+BARSIZE-(510-509)) && !bq)
                        sys_pause = !sys_pause;
                    lb = 0;
                }
            }
            else if(y<YRES)
            {
                c = (b&1) ? sl : sr;
                su = c;
                if(c==126)
                {
                    if(!bq)
                        add_sign_ui(vid_buf, x, y);
                }
                else if(lb)
                {
                    if(lm == 1)
                    {
                        xor_line(lx, ly, x, y, vid_buf);
                        if(c==127 && lx>=0 && ly>=0 && lx<XRES && ly<YRES && bmap[ly/CELL][lx/CELL]==4)
                        {
                            nfvx = (x-lx)*0.005f;
                            nfvy = (y-ly)*0.005f;
                            flood_parts(lx, ly, 255, -1, 4);
                            for(j=0; j<YRES/CELL; j++)
                                for(i=0; i<XRES/CELL; i++)
                                    if(bmap[j][i] == 255)
                                    {
                                        fvx[j][i] = nfvx;
                                        fvy[j][i] = nfvy;
                                        bmap[j][i] = 4;
                                    }
                        }
                    }
                    else if(lm == 2)
                    {
                        xor_line(lx, ly, lx, y, vid_buf);
                        xor_line(lx, y, x, y, vid_buf);
                        xor_line(x, y, x, ly, vid_buf);
                        xor_line(x, ly, lx, ly, vid_buf);
                    }
                    else
                    {
                        create_line(lx, ly, x, y, bs, c);
                        lx = x;
                        ly = y;
                    }
                }
                else
                {
                    if((sdl_mod & (KMOD_LSHIFT|KMOD_RSHIFT)) && !(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
                    {
                        lx = x;
                        ly = y;
                        lb = b;
                        lm = 1;
                    }
                    else if((sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)) && !(sdl_mod & (KMOD_LSHIFT|KMOD_RSHIFT)))
                    {
                        lx = x;
                        ly = y;
                        lb = b;
                        lm = 2;
                    }
                    else if((sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)) && (sdl_mod & (KMOD_LSHIFT|KMOD_RSHIFT)))
                    {
                        if(c!=125&&c!=SPC_AIR&&c!=SPC_HEAT&&c!=SPC_COOL&&c!=SPC_VACUUM)
                            flood_parts(x, y, c, -1, -1);
                        lx = x;
                        ly = y;
                        lb = 0;
                        lm = 0;
                    }
                    else if((sdl_mod & (KMOD_LALT||KMOD_RALT)) || b==SDL_BUTTON_MIDDLE)
                    {
                        if(y>0 && y<sdl_scale*YRES && x>0 && x<sdl_scale*XRES)
                        {
                            int cr;
                            cr = pmap[y][x];
                            if(!((cr>>8)>=NPART || !cr))
                            {
                                c = sl = cr&0xFF;
                            }
                            else
                            {
                                //Something
                            }
                        }
                        lx = x;
                        ly = y;
                        lb = 0;
                        lm = 0;
                    }
                    else
                    {
                        //Copy state before drawing any particles (for undo)7
                        int cbx, cby, cbi;

                        for(cbi=0; cbi<NPART; cbi++)
                            cb_parts[cbi] = parts[cbi];

                        for(cby = 0; cby<YRES; cby++)
                            for(cbx = 0; cbx<XRES; cbx++)
                                cb_pmap[cby][cbx] = pmap[cby][cbx];

                        for(cby = 0; cby<(YRES/CELL); cby++)
                            for(cbx = 0; cbx<(XRES/CELL); cbx++)
                            {
                                cb_vx[cby][cbx] = vx[cby][cbx];
                                cb_vy[cby][cbx] = vy[cby][cbx];
                                cb_pv[cby][cbx] = pv[cby][cbx];
                                cb_bmap[cby][cbx] = bmap[cby][cbx];
                                cb_emap[cby][cbx] = emap[cby][cbx];
                            }

                        create_parts(x, y, bs, c);
                        lx = x;
                        ly = y;
                        lb = b;
                        lm = 0;
                    }
                }
            }
        }
        else
        {
            if(lb && lm)
            {
                x /= sdl_scale;
                y /= sdl_scale;
                c = (lb&1) ? sl : sr;
                su = c;
                if(lm == 1)
                {
                    if(c!=127 || lx<0 || ly<0 || lx>=XRES || ly>=YRES || bmap[ly/CELL][lx/CELL]!=4)
                        create_line(lx, ly, x, y, bs, c);
                }
                else
                    create_box(lx, ly, x, y, c);
                lm = 0;
            }
            lb = 0;
        }

        if(load_mode)
        {
            draw_image(vid_buf, load_img, load_x, load_y, load_w, load_h, 128);
            xor_rect(vid_buf, load_x, load_y, load_w, load_h);
        }

        if(save_mode)
        {
            xor_rect(vid_buf, save_x*CELL, save_y*CELL, save_w*CELL, save_h*CELL);
            da = 51;
            db = 269;
        }

        if(zoom_en!=1 && !load_mode && !save_mode)
        {
            render_cursor(vid_buf, mx/sdl_scale, my/sdl_scale, su, bs);
            mousex = mx/sdl_scale;
            mousey = my/sdl_scale;
        }

        if(zoom_en)
            render_zoom(vid_buf);

        if(da)
            switch(db)
            {
            case 256:
                drawtext(vid_buf, 16, YRES-24, "Add simulation tags.", 255, 255, 255, da*5);
                break;
            case 257:
                drawtext(vid_buf, 16, YRES-24, "Add and remove simulation tags.", 255, 255, 255, da*5);
                break;
            case 258:
                drawtext(vid_buf, 16, YRES-24, "Save the simulation under the current name.", 255, 255, 255, da*5);
                break;
            case 259:
                drawtext(vid_buf, 16, YRES-24, "Save the simulation under a new name.", 255, 255, 255, da*5);
                break;
            case 260:
                drawtext(vid_buf, 16, YRES-24, "Sign into the Simulation Server.", 255, 255, 255, da*5);
                break;
            case 261:
                drawtext(vid_buf, 16, YRES-24, "Sign into the Simulation Server under a new name.", 255, 255, 255, da*5);
                break;
            case 262:
                drawtext(vid_buf, 16, YRES-24, "Find & open a simulation", 255, 255, 255, da*5);
                break;
            case 263:
                drawtext(vid_buf, 16, YRES-24, "Pause the simulation", 255, 255, 255, da*5);
                break;
            case 264:
                drawtext(vid_buf, 16, YRES-24, "Resume the simulation", 255, 255, 255, da*5);
                break;
            case 265:
                drawtext(vid_buf, 16, YRES-24, "Reload the simulation", 255, 255, 255, da*5);
                break;
            case 266:
                drawtext(vid_buf, 16, YRES-24, "Erase all particles and walls", 255, 255, 255, da*5);
                break;
            case 267:
                drawtext(vid_buf, 16, YRES-24, "Change display mode", 255, 255, 255, da*5);
                break;
            case 268:
                drawtext(vid_buf, 16, YRES-24, "Annuit C\245ptis", 255, 255, 255, da*5);
                break;
            case 269:
                drawtext(vid_buf, 16, YRES-24, "Click-and-drag to specify a rectangle to copy (right click = cancel).", 255, 216, 32, da*5);
                break;
            case 270:
                drawtext(vid_buf, 16, YRES-24, "Enable or disable compatability mode (disables heat simulation).", 255, 255, 255, da*5);
                break;
            case 271:
                drawtext(vid_buf, 16, YRES-24, "You're a moderator", 255, 255, 255, da*5);
                break;
            case 272:
                drawtext(vid_buf, 16, YRES-24, "Like/Dislike this save.", 255, 255, 255, da*5);
                break;
            case 273:
                drawtext(vid_buf, 16, YRES-24, "You like this.", 255, 255, 255, da*5);
                break;
            case 274:
                drawtext(vid_buf, 16, YRES-24, "You dislike this.", 255, 255, 255, da*5);
                break;
            case 275:
                drawtext(vid_buf, 16, YRES-24, "You cannot vote on your own save.", 255, 255, 255, da*5);
                break;
            default:
                drawtext(vid_buf, 16, YRES-24, (char *)ptypes[db].descs, 255, 255, 255, da*5);
            }
        if(itc)
        {
            itc--;
            drawtext(vid_buf, (XRES-textwidth(itc_msg))/2, ((YRES/2)-10), itc_msg, 255, 255, 255, itc>51?255:itc*5);
        }
        if(it)
        {
            it--;
            drawtext(vid_buf, 16, 20, it_msg, 255, 255, 255, it>51?255:it*5);
        }

        if(old_version)
        {
            clearrect(vid_buf, XRES-21-old_ver_len, YRES-24, old_ver_len+9, 17);
#ifdef BETA
            if(is_beta)
            {
                drawtext(vid_buf, XRES-16-old_ver_len, YRES-19, old_ver_msg_beta, 255, 216, 32, 255);
            }
            else
            {
                drawtext(vid_buf, XRES-16-old_ver_len, YRES-19, old_ver_msg, 255, 216, 32, 255);
            }
#else
            drawtext(vid_buf, XRES-16-old_ver_len, YRES-19, old_ver_msg, 255, 216, 32, 255);
#endif
            drawrect(vid_buf, XRES-19-old_ver_len, YRES-22, old_ver_len+5, 13, 255, 216, 32, 255);
        }

        if(hud_enable)
        {
            currentTime = SDL_GetTicks();
            if(currentTime-past>=16)
            {
                past = SDL_GetTicks();
                FPS++;
            }
            if(currentTime-pastFPS>=1000)
            {
#ifdef BETA
                sprintf(uitext, "Version %d (Beta %d) FPS:%d", SAVE_VERSION, MINOR_VERSION, FPS);
#else
                sprintf(uitext, "Version %d.%d FPS:%d", SAVE_VERSION, MINOR_VERSION, FPS);
#endif
                FPSB = FPS;
                FPS = 0;
                pastFPS = currentTime;
            }
            if(sdl_zoom_trig||zoom_en)
            {
                if(zoom_x<XRES/2)
                {
                    fillrect(vid_buf, XRES-20-textwidth(heattext), 266, textwidth(heattext)+8, 15, 0, 0, 0, 140);
                    drawtext(vid_buf, XRES-16-textwidth(heattext), 270, heattext, 255, 255, 255, 200);
                }
                else
                {
                    fillrect(vid_buf, 12, 266, textwidth(heattext)+8, 15, 0, 0, 0, 140);
                    drawtext(vid_buf, 16, 270, heattext, 255, 255, 255, 200);
                }
            }
            else
            {
                fillrect(vid_buf, XRES-20-textwidth(heattext), 12, textwidth(heattext)+8, 15, 0, 0, 0, 140);
                drawtext(vid_buf, XRES-16-textwidth(heattext), 16, heattext, 255, 255, 255, 200);
            }
            fillrect(vid_buf, 12, 12, textwidth(uitext)+8, 15, 0, 0, 0, 140);
            drawtext(vid_buf, 16, 16, uitext, 32, 216, 255, 200);
        }
	sdl_blit(0, 0, XRES+BARSIZE, YRES+MENUSIZE, vid_buf, XRES+BARSIZE);

	//Setting an element for the stick man
	if(ptypes[sr].falldown>0)
		player[2] = sr;
	else
		player[2] = PT_DUST;
    }

    http_done();
    return 0;
}