******* script runtime error *******
undefined is not an object: (file 'maps/mp/_fish_1.gsc', line 14)
  brush[i] thread move_fish(5,1);
           *
Error: called from:
(file 'maps/mp/_fish_1.gsc', line 3)
 thread main_fish();
        *
Error: called from:
(file 'maps/mp/mp_surv_earth_center.gsc', line 7)
 maps\mp\_fish_1::main();
 *
Error: started from:
(file 'maps/mp/mp_surv_earth_center.gsc', line 1)
main()
*
Error: ************************************
Loaded zone 'mp_surv_earth_center'
      dvar set cl_paused 0
      dvar set loc_language 0
      dvar set loc_forceEnglish 0
      dvar set com_errorTitle Error
      dvar set com_errorMessage script runtime error
(see console for details)
undefined is not an object
********************
ERROR: script runtime error
(see console for details)
undefined is not an object
********************