Free Hero Mesh

* Sound effects
  * Compressed wave sounds (?)
  * Numeric sounds (?)
* Game engine features
  * String data (partially implemented)
  * A ,PopUp command to use a popup with arguments starting from a mark
  * Returning a class from COLLIDE/COLLIDEBY to transform
  * Possibility to define auto-generation levels mode
  * Popup inventory list (with optional possibility of choice)
  * Popup inventory list (with optional possibility of choice) (?)
  * Playfield array
* Editor
  * Mouse dragging
* Deal better with allowing to skip past corrupted levels
* Picture editor/loading
  * Allowing more altimages
* Puzzle set catalog format (using with internet; a separate program)
* Inventory/replay hybrid view

  generator built in to SQLite. (This will override the definition of the
  SQL RANDOM() function if it is defined.)

CONFIG_USERCACHE_PERMISSIONS
  If defined as a octal number, set the default file permissions of the
  user cache database when creating it. (The user can still change them
  afterward by using chmod.)

CONFIG_USING_32BIT_COORDINATES
  If defined, allow 32-bit coordinates in SDL_Rect and in other graphics
  functions of SDL.

CONFIG_USING_APPIMAGE
  If defined, it will check the environment variables having to do with
  AppImage and will be able to load the default resources from there, as
  well as allow the configuration file to reference the AppImage directory.

CONFIG_USING_ARM_NEON

#include "smallxrm.h"
#include "pcfont.h"
#include "quarks.h"
#include "heromesh.h"
#include "cursorshapes.h"
#include "keyicons.xbm"

#define PPR 128 // pictures per row
#define PPRM 127 // pictures per row bit mask (one less than pictures per row)
#define PPRS 7 // pictures per row bit shift amount (log2 of pictures per row)

SDL_Surface*screen;
Uint16 picture_size;
int left_margin;
Uint32 codepage;

static SDL_Surface*picts;
static Uint8*curpic;

  if(fp) fclose(fp);
  SDL_SetColors(screen,pal,0,256);
  SDL_SetColors(picts,pal,0,256);
}

void draw_picture(int x,int y,Uint16 img) {
  // To be called only when screen is unlocked!
  SDL_Rect src={(img&15)*picture_size,(img>>4)*picture_size,picture_size,picture_size};
  SDL_Rect src={(img&PPRM)*picture_size,(img>>PPRS)*picture_size,picture_size,picture_size};
  SDL_Rect dst={x,y,picture_size,picture_size};
  SDL_BlitSurface(picts,&src,screen,&dst);
}

void draw_cell(int x,int y) {
  // To be called only when screen is unlocked!
  Uint32 o;

  which=i;
  i=1;
  while(which--) load_one_picture_sub(fp,size=buf[i],meth=(i==1?*buf>>4:buf[(*buf&15)+1+((i-2)>>1)]>>(i&1?4:0))&15),i++;
  if(meth==5 || meth==6) meth^=3;
  if(meth==15) meth=0;
  SDL_LockSurface(picts);
  pitch=picts->pitch;
  pix=picts->pixels+((img&15)+pitch*(img>>4))*picture_size;
  pix=picts->pixels+((img&PPRM)+pitch*(img>>PPRS))*picture_size;
  for(i=0;i<size;i++) {
    for(h=0;h<zoom;h++) {
      for(j=0;j<size;j++) {
        if(meth&1) j=size-j-1;
        if(meth&2) i=size-i-1;
        for(k=0;k<zoom;k++) *pix++=curpic[meth&4?j*size+i:i*size+j];
        if(meth&1) j=size-j-1;

  }
  SDL_UnlockSurface(picts);
  free(d);
}

static void load_dependent_picture(FILE*fp,Sint32 sz,Uint16 img,int alt) {
  SDL_Rect src={0,0,picture_size,picture_size};
  SDL_Rect dst={(img&15)*picture_size,(img>>4)*picture_size,picture_size,picture_size};
  SDL_Rect dst={(img&PPRM)*picture_size,(img>>PPRS)*picture_size,picture_size,picture_size};
  sqlite3_stmt*st;
  int c,i,x,y;
  char nam[128];
  Uint8 buf[512];
  Uint8*p;
  if(sqlite3_prepare_v2(userdb,"SELECT `ID` FROM `PICTURES` WHERE `NAME` = ?1 AND NOT `DEPENDENT`;",-1,&st,0))
   fatal("Unable to prepare SQL statement while loading pictures: %s\n",sqlite3_errmsg(userdb));

      sqlite3_finalize(st);
      return;
    } else if(i!=SQLITE_ROW) {
      fatal("SQL error (%d): %s\n",i,sqlite3_errmsg(userdb));
    }
    i=sqlite3_column_int(st,0);
    sqlite3_reset(st);
    src.x=(i&15)*picture_size;
    src.y=(i>>4)*picture_size;
    src.x=(i&PPRM)*picture_size;
    src.y=(i>>PPRS)*picture_size;
    SDL_SetColorKey(picts,0,0);
    SDL_BlitSurface(picts,&src,picts,&dst);
  } else {
    SDL_FillRect(picts,&dst,0);
  }
  while(sz-->0) switch(c=fgetc(fp)) {
    case 0 ... 7: // Flip/rotate
      pic_orientation(&dst,c);
      break;
    case 8: // *->* *->* *->*
      c=fgetc(fp);
      sz-=c+1;
      fread(buf,1,c&255,fp);
      SDL_LockSurface(picts);
      p=picts->pixels+((img&15)+picts->pitch*(img>>4))*picture_size;
      p=picts->pixels+((img&PPRM)+picts->pitch*(img>>PPRS))*picture_size;
      for(y=0;y<picture_size;y++) {
        for(x=0;x<picture_size;x++) {
          for(i=0;i<c;i+=2) {
            if(p[x]==buf[i]) {
              p[x]=buf[i+1];
              break;
            }
          }
        }
        p+=picts->pitch;
      }
      SDL_UnlockSurface(picts);
      break;
    case 9: // *->*->*->*->*
      c=fgetc(fp);
      sz-=c+1;
      fread(buf,1,c&255,fp);
      SDL_LockSurface(picts);
      p=picts->pixels+((img&15)+picts->pitch*(img>>4))*picture_size;
      p=picts->pixels+((img&PPRM)+picts->pitch*(img>>PPRS))*picture_size;
      for(y=0;y<picture_size;y++) {
        for(x=0;x<picture_size;x++) {
          for(i=0;i<c-1;i++) {
            if(p[x]==buf[i]) {
              p[x]=buf[i+1];
              break;
            }
          }
        }
        p+=picts->pitch;
      }
      SDL_UnlockSurface(picts);
      break;
    case 10: // *<->* *<->* *<->*
      c=fgetc(fp);
      sz-=c+1;
      fread(buf,1,c&255,fp);
      SDL_LockSurface(picts);
      p=picts->pixels+((img&15)+picts->pitch*(img>>4))*picture_size;
      p=picts->pixels+((img&PPRM)+picts->pitch*(img>>PPRS))*picture_size;
      for(y=0;y<picture_size;y++) {
        for(x=0;x<picture_size;x++) {
          for(i=0;i<c;i+=2) {
            if(p[x]==buf[i]) {
              p[x]=buf[i+1];
              break;
            } else if(p[x]==buf[i+1]) {

        fprintf(stderr,"Cannot find overlay for a dependent picture; ignoring\n");
        break;
      } else if(i!=SQLITE_ROW) {
        fatal("SQL error (%d): %s\n",i,sqlite3_errmsg(userdb));
      }
      i=sqlite3_column_int(st,0);
      sqlite3_reset(st);
      src.x=(i&15)*picture_size;
      src.y=(i>>4)*picture_size;
      src.x=(i&PPRM)*picture_size;
      src.y=(i>>PPRS)*picture_size;
      SDL_BlitSurface(picts,&src,picts,&dst);
      break;
    case 12 ... 15: // Shift (up/down/right/left)
      while(sz>0) {
        x=fgetc(fp);
        y=fgetc(fp);
        sz-=2;

      }
      break;
    case 16: // Hue/shade
      fread(buf,1,2,fp);
      c=(Sint8)buf[1];
      sz-=2;
      SDL_LockSurface(picts);
      p=picts->pixels+((img&15)+picts->pitch*(img>>4))*picture_size;
      p=picts->pixels+((img&PPRM)+picts->pitch*(img>>PPRS))*picture_size;
      for(y=0;y<picture_size;y++) {
        for(x=0;x<picture_size;x++) {
          if(p[x] && p[x]<=225) {
            i=(p[x]-1)%15+c;
            p[x]=15*(((p[x]-1)/15+buf[0])%15)+1;
            if(i<0) p[x]=1; else if(i>14) p[x]=15; else p[x]+=i;
          }

  picture_size=decide_picture_size(nwantsize,wantsize,havesize,n);
  if(main_options['x']) goto done;
  if(sqlite3_prepare_v2(userdb,"SELECT `ID`, `OFFSET` FROM `PICTURES` WHERE NOT `DEPENDENT`;",-1,&st,0))
   fatal("Unable to prepare SQL statement while loading pictures: %s\n",sqlite3_errmsg(userdb));
  optionquery[1]=Q_screenFlags;
  v=xrm_get_resource(resourcedb,optionquery,optionquery,2);
  i=v&&strchr(v,'h');
  picts=SDL_CreateRGBSurface((i?SDL_HWSURFACE:SDL_SWSURFACE)|SDL_SRCCOLORKEY,picture_size<<4,picture_size*((n+16)>>4),8,0,0,0,0);
  picts=SDL_CreateRGBSurface((i?SDL_HWSURFACE:SDL_SWSURFACE)|SDL_SRCCOLORKEY,picture_size<<PPRS,picture_size*((n+PPR)>>PPRS),8,0,0,0,0);
  if(!picts) fatal("Error allocating surface for pictures: %s\n",SDL_GetError());
  init_palette();
  for(i=0;i<n;i++) {
    if((j=sqlite3_step(st))!=SQLITE_ROW) {
      if(j==SQLITE_DONE) break;
      fatal("SQL error (%d): %s\n",j,sqlite3_errmsg(userdb));
    }