LUA Problem with object location

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Floater

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Hello All :)

During my so called "gamification" efforts I have run into a strange effect, which occurs, when I try to reposition objects with Lua script.

I have attached two files below: the scenario and the script, to describe the problem.

Normally the script after 9 seconds should attach the cargo which is visible initially, to the ship, which appears in the second 7. Then, after another 2 seconds of simulation time, the cargo is detached and should fall onto the ground.

Instead it is "teleported" somewhere in the vicinity.

It looks like Orbiter is taking into account the ship position from different frame than the script. The effect can be observed with or without any modules running and under the DX9 or standard DX (Orbiter2016 of course). The effect can be bypassed by running the script not from the line in scenario file, but manually, from the Lua console.

I wonder: am I doing something wrong with my script, or is this behavior a bug?


Scenario:
Code: 
BEGIN_DESC

END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 52086.1637776680
  Script floater/background_test
  Help CurrentState_img
END_ENVIRONMENT

BEGIN_FOCUS
  Ship Zeus-5
END_FOCUS

BEGIN_CAMERA
  TARGET Cera
  MODE Extern
  POS 8.513000 99.017724 -21.629157
  TRACKMODE TargetRelative
  FOV 50.00
END_CAMERA

BEGIN_HUD
  TYPE Surface
END_HUD

BEGIN_MFD Left
  TYPE Map
  REF Mars
  ZOOM 128
END_MFD

BEGIN_MFD Right
  TYPE Launch
  NAV 0
END_MFD

BEGIN_PANEL
END_PANEL

BEGIN_SHIPS
ISS:ProjectAlpha_ISS
  STATUS Orbiting Earth
  RPOS -2324945.833 -5588804.851 2958998.910
  RVEL -6569.7301 3620.8117 1687.0005
  AROT -167.228 -9.248 89.142
  VROT -0.0419 0.0449 0.0237
  AFCMODE 7
  PRPLEVEL 0:1.000000
  IDS 0:588 100 1:586 100 2:584 100 3:582 100 4:580 100
  NAVFREQ 0 0
  XPDR 466
END
Mir:Mir
  STATUS Orbiting Earth
  RPOS -5201772.380 -1010008.255 4043991.104
  RVEL -4590.8801 -1060.9609 -6137.0081
  AROT 163.895 -27.910 12.738
  VROT 0.0067 -0.0907 -0.0348
  AFCMODE 7
  IDS 0:540 100 1:542 100 2:544 100
  XPDR 482
END
Luna-OB1:Wheel
  STATUS Orbiting Moon
  RPOS 749108.645 2110024.287 1312.471
  RVEL -1394.5452 495.0261 0.0934
  AROT -0.030 0.012 35.919
  VROT -0.0000 0.0000 10.0000
  AFCMODE 7
  IDS 0:560 100 1:564 100
  XPDR 494
END
SH-03:ShuttleA
  STATUS Landed Earth
  BASE Habana:4
  POS -82.3982414 23.0005396
  HEADING 70.00
  ALT 2.912
  AROT 50.119 -65.937 19.478
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 0
  XPDR 0
  PODANGLE 0.0000 0.0000
  DOCKSTATE 0 0.0000
  GEAR 0 0.0000
  PAYLOAD MASS 0.0 0
  ATTREF 0 0 0
  ADI_LAYOUT 0
END
PB-01:ShuttlePB
  STATUS Landed Earth
  BASE Habana:1
  POS -82.4000000 22.9994604
  HEADING 22.00
  ALT 1.287
  AROT 62.913 -18.678 7.875
  AFCMODE 7
  PRPLEVEL 0:1.000000
  NAVFREQ 0 0
END
GL-02:DeltaGlider
  STATUS Landed Mars
  BASE Olympus:3
  POS -135.4300000 12.7366196
  HEADING 0.00
  ALT 2.532
  AROT 81.111 -8.915 -44.736
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 0 0 0
  XPDR 0
  HOVERHOLD 0 1 0.0000e+000 0.0000e+000
  GEAR 1.0000 0.0000
  AAP 0:0 0:0 0:0
END
SH-01:ShuttleA
  STATUS Landed Moon
  BASE Brighton Beach:1
  POS -33.4375000 41.1184067
  HEADING 0.00
  ALT 3.027
  AROT 64.274 33.319 48.978
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 0
  XPDR 0
  PODANGLE 0.0000 0.0000
  DOCKSTATE 0 0.0000
  GEAR 0 0.0000
  PAYLOAD MASS 0.0 0
  ATTREF 0 0 0
  ADI_LAYOUT 0
END
XR2-01_Bay:XRPayloadBay
  STATUS Orbiting Sun
  RPOS -17118686473337200.000 -23386565924229444.000 -41869506182307512.000
  RVEL -5711405305192.0850 -7802592686486.5488 -13969090995760.2680
  AROT -31.448 47.710 157.457
  VROT -17895.4775 -1243.8074 -519.2598
  AFCMODE 7
END
Zeus-5:DeltagliderIV
  STATUS Landed Mars
  POS -110.9352260 29.0828980
  HEADING 199.32
  ALT 2.367
  AROT -111.263 28.434 -159.552
  RCSMODE 2
  PRPLEVEL 0:0.537326 1:0.834993
  IDS 0:45 100
  NAVFREQ 50 0
  XPDR 0
  ;-------------------------- Skin parameters must contain directory name of skin (without space) 
  MeshSkin mining
  ;-------------------------- Cargo payload must contain name of config file or "none".(see doc) 
  CargoPayload none
  NOSECONE 0 0.00
  GEAR 1 1.00
  AllDoorsState 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 0.00 0 1 1.00
  But1Cockpit 0 0 0 2 2 2 0 2 2 2 2 2 2 2 2 1 1 2 0 1 1 3
  But2Cockpit 0 0 0 0 0 0 0 0 2 2 2 2 2 0 50 0 0 0 2 2 0 0
  TransEffect 0
  LifeBut1State 0 2 1 2 1 2 2 2 2 2 2 2 2 0 0
  LevelBatt 100.0000
  Emergency_power 10000.0000
  VoltageStartBus 0.0000
  VoltageGen1 96.2800
  VoltageGen2 96.2800
  VoltageGenBus 96.0000
  O2tankALevel 94.4574
  N2tankALevel 100.0000
  O2tankBLevel 100.0000
  N2tankBLevel 100.0000
  CabinO2Level 21.3951
  CabinCO2Level 600.0000
  CabinTempLevel 21.2000
  CabinPressure 14.7000
  CabinMoistLevel 36.0000
  CabinDustLevel 0.0001
  CabinO2Setting 21.4000
  CabinTempSetting 21.2000
  CabinPressSetting 14.7000
  AntennaTarget no_target
  O2ConsumptionSetting 1
  FuelConsumptionSetting 1
  MainenginePower 1
  ;------------------Crew parameters  UMMUCREW Function-Name-Age-CardiacPulse-WeightKg (fonction of Pilot must be: Capt) 
  NoOneOnBoard 0
  NoPilotOnBoard 0
  UMMUCREW Capt-Francois_Bowman-41-65-80
  UMMUCREW -Peter_Dawson-35-69-94
  FailGearFailure 0
  FailGearCollapse 0
  FailLeftMainEngine 0
  FailRightMainEngine 0
  FailHoverEngine 0
  FailRcs 0
  FailSurfaceControl 0
  FailComputer 0
  FailComputerBlueScreen 0
  FailAutopilot 0
  FailExtRadiator 0
  FailAirbrake 0
  FailNoseCone 0
  FailCanopy 0
  FailAntenna 0
  FailLeftTurbo 0
  FailRightTurbo 0
  FailCargoDoor 0
  SpacesuitTimer 0
  UCGO @@0,1,0,0,@@1,1,0,0,@@2,1,0,0,@@3,1,0,0,
END
Floatax-3:Deltaglider
  STATUS Landed Mars
  BASE Ganges South:1
  POS -51.3399831 -12.0299970
  HEADING 259.34
  ALT 2.540
  AROT -162.809 51.878 91.651
  RCSMODE 2
  AFCMODE 7
  PRPLEVEL 0:0.539880 1:0.859881
  NAVFREQ 180 500 0 0
  XPDR 0
  RCOVER 1.0000 0.0000
  HOVERHOLD 0 2 2.7760e-006 -2.8920e-001
  TRIM -0.013554
  GEAR 1.0000 0.0000
  RADIATOR 1.0000 0.0000
  INSTRLIGHT 1 0 0.50
  FLOODLIGHT 0 0.00
  AAP 0:0 0:0 0:0
END
Cera-001:UCGO\Cargos\CargoBaseModule
  STATUS Landed Mars
  POS -110.9356220 29.0820500
  HEADING 66.56
  ALT 0.001
  AROT 112.919 -67.840 -55.771
  AFCMODE 56
  CargoUnpacked 1
END
Cera-00:UCGO\Cargos\CargoBaseModule
  STATUS Landed Mars
  POS -110.9355720 29.0819300
  HEADING 66.56
  ALT 0.001
  AROT 112.918 -67.840 -55.769
  AFCMODE 56
  CargoUnpacked 1
END
Cera:DGIVCargoB38
  STATUS Orbiting Mars
  RPOS 625249.732 1712173.635 2862448.801
  RVEL -188.0107 92.6074 -14.3338
  AROT 120.718 -4.036 170.189
  VROT -0.0015 -0.0139 0.0034
  AFCMODE 7
  IDS 0:543 100
  NAVFREQ 0 0
END
Floatax-4:XR2Ravenstar
  STATUS Landed Mars
  BASE Olympus:1
  POS -135.4299859 12.7399939
  HEADING 345.55
  ALT 2.555
  AROT 70.933 1.374 -44.732
  RCSMODE 2
  PRPLEVEL 0:0.999793 1:0.995918 2:1.000000
  IDS 0:203 100
  NAVFREQ 0 0 0 0
  XPDR 201
  SECONDARY_HUD 3
  LAST_ACTIVE_SECONDARY_HUD 0
  ADCTRL_MODE 0
  TAKEOFF_LANDING_CALLOUTS 0.000000 0.000000 0.000000 0.000000 0.000000
  APU_FUEL_QTY 0.953417
  LOX_QTY 0.999697
  CABIN_O2_LEVEL 0.209000
  CREW_STATE 0
  INTERNAL_SYSTEMS_FAILURE 0
  COGSHIFT_MODES 0 0 0
  MWS_ACTIVE 0
  COOLANT_TEMP 31.200000
  DMG_0 1.000000 Left Wing
  DMG_1 1.000000 Right Wing
  DMG_2 1.000000 Left Aileron
  DMG_3 1.000000 Right Aileron
  DMG_4 1.000000 Landing Gear
  DMG_5 1.000000 Nosecone
  DMG_6 1.000000 Retro Doors
  DMG_7 1.000000 Top Hatch
  DMG_8 1.000000 Radiator
  DMG_9 1.000000 Airbrake
  DMG_10 1.000000 Left Main Engine
  DMG_11 1.000000 Right Main Engine
  DMG_12 1.000000 Left SCRAM Engine
  DMG_13 1.000000 Right SCRAM Engine
  DMG_14 1.000000 Fore Hover Engine
  DMG_15 1.000000 Aft Hover Engine
  DMG_16 1.000000 Left Retro Engine
  DMG_17 1.000000 Right Retro Engine
  DMG_18 1.000000 Forward Lower RCS
  DMG_19 1.000000 Aft Upper RCS
  DMG_20 1.000000 Forward Upper RCS
  DMG_21 1.000000 Aft Lower RCS
  DMG_22 1.000000 Forward Star. RCS
  DMG_23 1.000000 Aft Port RCS
  DMG_24 1.000000 Forward Port RCS
  DMG_25 1.000000 Aft Star. RCS
  DMG_26 1.000000 Outboard Upper Port RCS
  DMG_27 1.000000 Outboard Lower Star. RCS
  DMG_28 1.000000 Outboard Upper Star. RCS
  DMG_29 1.000000 Outboard Lower Port RCS
  DMG_30 1.000000 Aft RCS
  DMG_31 1.000000 Forward RCS
  DMG_32 1.000000 Bay Doors
  IS_CRASHED 0
  MET_STARTING_MJD 52086.129385
  INTERVAL1_ELAPSED_TIME -1.000000
  INTERVAL2_ELAPSED_TIME -1.000000
  MET_RUNNING 1
  INTERVAL1_RUNNING 0
  INTERVAL2_RUNNING 0
  ACTIVE_MDM 3
  TEMP_SCALE 2
  CUSTOM_AUTOPILOT_MODE 0
  AIRSPEED_HOLD_ENGAGED 0
  SCRAM0DIR 0.000000 0.000000 1.000000
  SCRAM1DIR 0.000000 0.000000 1.000000
  HOVER_BALANCE 0.000000
  MAIN0DIR 0.000000 0.000000 1.000000
  MAIN1DIR 0.000000 0.000000 1.000000
  GIMBAL_BUTTON_STATES 0 0 0 0 0 0
  ATTITUDE_HOLD_DATA 0.000000 0.000000 0 0 0.000000
  DESCENT_HOLD_DATA 0.000000 -3.000000 0
  AIRSPEED_HOLD_DATA 0.000000
  OVERRIDE_INTERLOCKS 0 0
  TERTIARY_HUD_ON 1
  CREW_DISPLAY_INDEX 0
  GEAR 1 1.0000
  RCOVER 1 1.0000
  NOSECONE 0 0.0000
  AIRLOCK 0 0.0000
  IAIRLOCK 0 0.0000
  CHAMBER 0 0.0000
  AIRBRAKE 0 0.0000
  RADIATOR 1 1.0000
  LADDER 0 0.0000
  HATCH 0 0.0000
  SCRAM_DOORS 0 0.0000
  HOVER_DOORS 0 0.0000
  APU_STATUS 0
  EXTCOOLING_STATUS 0
  TRIM 0.000000
  LIGHTS 0 0 0
  PARKING_BRAKES 0
  XR1UMMU_CREW_DATA_VALID 1
  UMMUCREW XI0-Lee_Nash-39-65-78
  UMMUCREW XI1-Kara_Miller-32-65-58
  PAYLOAD_SCREENS_DATA 0.2 0 1 2
  GRAPPLE_TARGET XR2PayloadCHM-01-1
  PAYLOAD_BAY_DOORS 1 1.0000
END
Floatax-4_Bay:XRPayloadBay
  STATUS Landed Mars
  POS -135.4299733 12.7399451
  HEADING 345.55
  ALT 3.618
  AROT 0.000 -0.000 0.000
  ATTACHED 0:3,Floatax-4
  AFCMODE 7
END
XR2PayloadCHM-01-1:XR2PayloadCHM
  STATUS Landed Mars
  POS -135.4299950 12.7400278
  HEADING 345.55
  ALT 3.331
  AROT 128.769 -34.996 159.105
  ATTACHED 0:0,Floatax-4
  AFCMODE 7
  NAVFREQ 0 0
END
Cera-0:UCGO\Cars\CarLunarRover
  STATUS Landed Mars
  POS -110.9357820 29.0820500
  HEADING 21.56
  ALT 0.935
  AROT 69.836 -30.471 -20.968
  AFCMODE 7
  NAVFREQ 0 0
  AIInFonction 0
  CurrentWpt 0
  EngineStarted 1.0000000000
  FlashLightState 0
  SAVEVAR00 2§0,5§0,8§0,11§0,14§0,17§0,20§0,23§0,26§0,29§0,32§0,35§0,38§0,41§0,44§0,47§0,50§0,53§0,56§0,59§0,200§0,301§0,400§1,401§1,403§1,405§1,407§1,
END
Cera-AZ-1:UCGO\Cars\CarAzure
  STATUS Landed Mars
  POS -110.3031220 34.0439300
  HEADING 67.56
  ALT 0.935
  AROT 110.135 -70.590 -57.525
  AFCMODE 7
  NAVFREQ 0 0
  AIInFonction 0
  CurrentWpt 0
  EngineStarted 1.0000000000
  FlashLightState 0
  SAVEVAR00 2§0,5§0,8§0,11§0,14§0,17§0,20§0,23§0,26§0,29§0,32§0,35§0,38§0,41§0,44§0,47§0,50§0,53§0,56§0,59§0,200§0,301§0,400§1,401§1,403§1,405§1,407§1,
  UCGO @@0,1,0,0,@@1,1,0,0,
END
Ceraunius_B:UCGO\Cargos\CargoLandingBeacon
  STATUS Landed Mars
  POS -109.5940220 30.4002300
  HEADING 90.00
  ALT 0.005
  AROT -179.999 -70.406 -120.401
  AFCMODE 16
  CargoUnpacked 0
END
END_SHIPS

BEGIN_ReFuelMFD
  SCENARIO_TREE 
    NAMED Computers
    END_NODE 
  END_NODE 
END

Script:
Code: 
			proc.wait_simdt(7.0)

				oapi.set_cameratarget(vessel.get_focushandle(), 2)
				local camera_mode = {}
				camera_mode.mode = 'track'
				camera_mode.trackmode = 'RELATIVE'
				camera_mode.reldist = 2.7
				camera_mode.phi = 2.0
				camera_mode.tht = -0.5

				oapi.set_cameramode(camera_mode)


			proc.wait_simdt(2.0)

					local my_vessel = vessel.get_focusinterface()
					local cargo_vessel_interface = vessel.get_interface('Cera')
					local cargo_vessel_handle = oapi.get_objhandle('Cera')


					local att = my_vessel:get_attachmenthandle(false, 0)
					local att1 = cargo_vessel_interface:get_attachmenthandle(true, 0)

					local att_pos = {x = 0.0, y = 3.0, z = -1.5}
--					local att_pos = {x = pos_x, y = pos_y, z = pos_z}

					local att_dir = {x = 0.0, y = 0.0, z = -1.0}
					local att_rot = {x = 0.0, y = -1.0, z = 0.0}

					local att_pos1 = {x = 0.0, y = 0.9, z = 0.0}
					local att_dir1 = {x = 0.0, y = 0.0, z = -1.0}
					local att_rot1 = {x = 0.0, y = -1.0, z = 0.0}
	
					my_vessel:set_attachmentparams(att, att_pos, att_dir, att_rot)
					cargo_vessel_interface:set_attachmentparams(att1, att_pos1, att_dir1, att_rot1)

					my_vessel:attach_child(cargo_vessel_handle, att, att1)


			proc.wait_simdt(2.0)


					local my_vessel = vessel.get_focusinterface()
					local att = my_vessel:get_attachmenthandle(false, 0)

					my_vessel:detach_child(att)
 
B

BEEP

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Still havent tried but there's something I can't understand.

Why do you need to redefine both attachment positions? ( I suppose they are part of the vessel definition file .dll .cfg or else so why you need to reposition the attachments in the script)?

Where are pos_x,pos_y,pos_z defined before being referenced as the att_pos vector?


Rgds

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F

fred18

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I had a similar issue and it was fault of the detachment happening in clbkpoststep instead of prestep, but i have no clue of how to apply this here
 
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