import unreal as u,json,time,math,traceback
from pathlib import Path
ROOT=Path(__file__).resolve().parents[3];LEVEL=u.get_editor_subsystem(u.LevelEditorSubsystem);EDITOR=u.get_editor_subsystem(u.UnrealEditorSubsystem);report={'floor_traces':{},'movement':None};u.EditorPythonScripting.set_keep_python_script_alive(True)
state={'start':time.monotonic(),'phase':'load','t':0,'positions':[]}
def pos(v):return u.Vector(v[0]*100,-v[1]*100,v[2]*100)
def tick(dt):
 try:
  elapsed=time.monotonic()-state['start']
  if state['phase']=='finish':
   if time.monotonic()-state['t']>3:
    u.unregister_slate_post_tick_callback(handle);u.log('HOMESTEAD_WALK_VERIFIED '+json.dumps(report['movement']));u.SystemLibrary.quit_editor()
   return
  if elapsed>90:raise RuntimeError('Play-in-editor movement test timed out')
  if state['phase']=='load':
   if elapsed<12:return
   u.AutomationLibrary.finish_loading_before_screenshot();LEVEL.editor_request_begin_play();state['phase']='settle';state['t']=time.monotonic();return
  game=EDITOR.get_game_world()
  if not game:return
  pawn=u.GameplayStatics.get_player_pawn(game,0)
  if not pawn:return
  if state['phase']=='settle':
   if time.monotonic()-state['t']<4:return
   assert 'HomesteadWalker' in pawn.get_class().get_name(),pawn.get_class().get_name()
   for name,xy in [('verandah',(0,4)),('living',(-1.8,1)),('corridor',(-7.5,-1.8)),('bedroom',(-10.7,-3.5)),('meditation',(-11.8,10.8)),('garage',(2,-18)),('garden',(0,13)),('training',(-10,-19))]:
    result=u.SystemLibrary.line_trace_single(game,pos((*xy,2.9)),pos((*xy,-2)),u.TraceTypeQuery.TRACE_TYPE_QUERY1,True,[pawn],u.DrawDebugTrace.NONE,True);assert result is not None,name;report['floor_traces'][name]='hit'
   p=pawn.get_actor_location();state['initial']=[p.x,p.y,p.z];assert 170<p.z<240,('Spawn not on floor',p.z);state['phase']='car_settle';state['t']=time.monotonic();pawn.set_actor_location(u.Vector(-170,1500,153),False,True)
  elif state['phase']=='car_settle':
   if time.monotonic()-state['t']<1:return
   state['phase']='car_walk';state['t']=time.monotonic()
  elif state['phase']=='car_walk':
   pawn.add_movement_input(u.Vector(0,1,0),1)
   if time.monotonic()-state['t']>2.5:
    q=pawn.get_actor_location();assert 1570<q.y<1680,('Car did not stop walking capsule',q)
    report['tesla_collision']={'walk_stopped_before_car':True,'position_cm':[q.x,q.y,q.z]}
    pawn.set_actor_location(u.Vector(*state['initial']),False,True);state['phase']='walk_reset';state['t']=time.monotonic()
  elif state['phase']=='walk_reset':
   if time.monotonic()-state['t']<1:return
   state['phase']='walk';state['t']=time.monotonic()
  elif state['phase']=='walk':
   p=pawn.get_actor_location();state['positions'].append([p.x,p.y,p.z]);pawn.add_movement_input(u.Vector(0,1,0),1)
   if time.monotonic()-state['t']>2.5:
    a=state['initial'];dist=math.hypot(p.x-a[0],p.y-a[1]);assert dist>100,('No meaningful movement',dist);assert 170<p.z<240,('Pawn left walking floor',p.z)
    report['movement']={'pawn':pawn.get_class().get_name(),'start_cm':a,'end_cm':[p.x,p.y,p.z],'distance_cm':dist,'movement_mode':str(pawn.character_movement.movement_mode),'controller_possessed':pawn.get_controller() is not None,'sampled_positions':len(state['positions'])};report['status']='PASS: daylight level, Tesla blocks walking, eight floor traces and possessed character walking from verandah into living entry';(ROOT/'unreal-walkthrough-verification.json').write_text(json.dumps(report,indent=2));LEVEL.editor_request_end_play();state['phase']='finish';state['t']=time.monotonic()
 except Exception:
  report['status']='FAILED';report['error']=traceback.format_exc();(ROOT/'unreal-walkthrough-verification.json').write_text(json.dumps(report,indent=2));u.log_error(report['error']);u.unregister_slate_post_tick_callback(handle);LEVEL.editor_request_end_play();u.SystemLibrary.quit_editor()
handle=u.register_slate_post_tick_callback(tick)