Free Hero Mesh

  const UserCommand*cmd=find_key_binding(ev,editing);
  int prev=0;
  int i,j,k;
  const char*name;
  if(ev->type==SDL_MOUSEBUTTONDOWN && !x && !y && ev->button.x>=left_margin) {
    x=(ev->button.x-left_margin)/picture_size+1;
    y=ev->button.y/picture_size+1;
    if(x<1 || y<1 || x>pfwidth || y>pfheight) return 0;
  }
  switch(cmd->cmd) {
    case 0:
      return 0;
    case '^':
      return cb(0,cmd->n*'\0\1'+'^\0',y*64+x,0,0,aux);
    case '=': case '-': case '+':
      return cb(0,cmd->cmd*'\1\0'+'\0 ',cmd->n,0,0,aux);
    case '\'':
      return cb(0,'\' ',cmd->n,0,0,aux);
    case '!':
      i=system(cmd->txt);
      return 0;

        }
      }
      while((i=sqlite3_step(cmd->stmt))==SQLITE_ROW) {
        if(i=sqlite3_data_count(cmd->stmt)) {
          j=i>1?sqlite3_column_int(cmd->stmt,1):0;
          if((name=sqlite3_column_text(cmd->stmt,0)) && *name) {
            k=name[0]*'\1\0'+name[1]*'\0\1';
            while(i && sqlite3_column_type(cmd->stmt,i-1)==SQLITE_NULL) i--;
            prev=cb(prev,k,j,i,cmd->stmt,aux);
            if(prev<0) {
              i=SQLITE_DONE;
              break;
            }
          }
        }

#include "sqlite3.h"
#include "smallxrm.h"
#include "heromesh.h"
#include "quarks.h"
#include "cursorshapes.h"

static void redraw_editor(void) {
  char buf[32];
  SDL_Rect r;
  int x,y;
  r.x=r.y=0;
  r.h=screen->h;
  r.w=left_margin;
  SDL_FillRect(screen,&r,0xF0);
  r.x=left_margin-1;
  r.w=1;
  SDL_FillRect(screen,&r,0xF7);
  r.x=left_margin;
  r.w=screen->w-r.x;
  SDL_FillRect(screen,&r,back_color);
  for(x=1;x<=pfwidth;x++) for(y=1;y<=pfheight;y++) draw_cell(x,y);
  x=y=0;
  SDL_GetMouseState(&x,&y);
  SDL_LockSurface(screen);
  if(left_margin>=88) {
    snprintf(buf,32,"%5d/%5d",level_ord,level_nindex);
    draw_text(0,0,buf,0xF0,0xFC);
    snprintf(buf,32,"%5d",level_id);
    draw_text(0,8,"ID",0xF0,0xF7);
    draw_text(48,8,buf,0xF0,0xFF);
    snprintf(buf,32,"%5d",level_version);
    draw_text(0,16,"VER",0xF0,0xF7);
    draw_text(48,16,buf,0xF0,0xFF);
    snprintf(buf,32,"%5d",level_code);
    draw_text(0,24,"CODE",0xF0,0xF7);
    draw_text(48,24,buf,0xF0,0xFF);
  } else {
    snprintf(buf,32,"%5d",level_ord);
    draw_text(16,0,buf,0xF0,0xFC);
    snprintf(buf,32,"%5d",level_id);
    draw_text(0,8,"I",0xF0,0xF7);
    draw_text(16,8,buf,0xF0,0xFF);
    snprintf(buf,32,"%5d",level_version);
    draw_text(0,16,"V",0xF0,0xF7);
    draw_text(16,16,buf,0xF0,0xFF);
    snprintf(buf,32,"%5d",level_code);
    draw_text(0,24,"C",0xF0,0xF7);
    draw_text(16,24,buf,0xF0,0xFF);
  }
  x=x>=left_margin?(x-left_margin)/picture_size+1:0;
  y=y/picture_size+1;
  if(x>0 && y>0 && x<=pfwidth && y<=pfheight) snprintf(buf,8,"(%2d,%2d)",x,y);
  else strcpy(buf,"       ");
  draw_text(0,32,buf,0xF0,0xF3);
  SDL_UnlockSurface(screen);
  SDL_Flip(screen);
}

static void show_mouse_xy(SDL_Event*ev) {
  char buf[32];
  int x,y;
  x=(ev->motion.x-left_margin)/picture_size+1;
  y=ev->motion.y/picture_size+1;
  if(ev->motion.x<left_margin) x=0;
  if(x>0 && y>0 && x<=pfwidth && y<=pfheight) snprintf(buf,8,"(%2d,%2d)",x,y);
  else strcpy(buf,"       ");
  SDL_LockSurface(screen);
  draw_text(0,32,buf,0xF0,0xF3);
  SDL_UnlockSurface(screen);
  SDL_Flip(screen);
}

static void set_caption(void) {
  const char*r;
  char*s;

        redraw_editor();
        break;
      case SDL_QUIT:
        exit(0);
        break;
      case SDL_MOUSEMOTION:
        set_cursor(ev.motion.x<left_margin?XC_arrow:XC_tcross);
        show_mouse_xy(&ev);
        break;
      case SDL_MOUSEBUTTONDOWN:
        
        // fallthrough
      case SDL_KEYDOWN:
        i=exec_key_binding(&ev,1,0,0,editor_command,0);
        if(i==-1) exit(0);