Free Hero Mesh

    objRF=obj_dir(obj,(dir-1)&7);
    vol=o->volume;
    if(objLF!=VOIDLINK) vol+=volume_at(objects[objLF]->x,objects[objLF]->y);
    if(objRF!=VOIDLINK) vol+=volume_at(objects[objRF]->x,objects[objRF]->y);
    if(vol<=max_volume) {
      objE=objF;
      while(objE!=VOIDLINK) {
        if(o->oflags&(OF_DESTROYED|OF_VISUALONLY)) break;
        oE=objects[objE];
        if(oE->height>0) {
          v=send_message(objE,obj,MSG_HIT,NVALUE(oE->x),NVALUE(oE->y),NVALUE(hit|0x80000));
          if(v.t) Throw("Type mismatch in HIT/HITBY");
          hit=v.u&(classes[o->class]->cflags&CF_COMPATIBLE?0xFC098F7F:-1);
          if(hit&8) goto fail;
          if(!(hit&0x11)) {

          if(hit&0x20000) goto success;
          if(!oF) goto fail;
          if(move_to(from,obj,oF->x,oF->y)) goto success; else goto fail;
        }
      }
    } else {
      // Volume is too much; hit the objects it won't go between
      if(o->oflags&(OF_DESTROYED|OF_VISUALONLY)) goto fail;
      objE=objLF;
      while(objE!=VOIDLINK) {
        oE=objects[objE];
        if(oE->height>0) {
          v=send_message(objE,obj,MSG_HIT,NVALUE(oE->x),NVALUE(oE->y),NVALUE(0x80008));
          if(v.t) Throw("Type mismatch in HIT/HITBY");
          if(!(v.u&1)) v=send_message(obj,objE,MSG_HITBY,NVALUE(o->x),NVALUE(o->y),NVALUE(v.u|0x80008));
        }
        objE=obj_below(objE);
      }
      if(o->oflags&(OF_DESTROYED|OF_VISUALONLY)) goto fail;
      objE=objRF;
      while(objE!=VOIDLINK) {
        oE=objects[objE];
        if(oE->height>0) {
          v=send_message(objE,obj,MSG_HIT,NVALUE(oE->x),NVALUE(oE->y),NVALUE(0x80008));
          if(v.t) Throw("Type mismatch in HIT/HITBY");
          if(!(v.u&1)) v=send_message(obj,objE,MSG_HITBY,NVALUE(o->x),NVALUE(o->y),NVALUE(v.u|0x80008));
        }
        objE=obj_below(objE);
      }
    }
  } else {
    // Orthogonal movement
    if(hit) hit=(hit&0x0C000000)|0x800;
    if(!oF) goto fail;
    objE=objF;
    while(objE!=VOIDLINK) {
      if(o->oflags&(OF_DESTROYED|OF_VISUALONLY)) break;
      oE=objects[objE];
      if(oE->height>0) {
        hit&=~7;
        // HIT/HITBY messages
        v=send_message(objE,obj,MSG_HIT,NVALUE(oE->x),NVALUE(oE->y),NVALUE(hit));
        if(v.t) Throw("Type mismatch in HIT/HITBY");
        hit|=v.u&(classes[o->class]->cflags&CF_COMPATIBLE?0xFC098F7F:-1);