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Asteroid Miner won't move after mining

Discussion in 'Bug Reports' started by domingo, Jul 16, 2018.

Thread Status:
This last post in this thread was made more than 31 days old.
  1. domingo Trainee Engineer

    Reproduction Rate: 3 out of 3
    Affected Version: 1.186.5 (latest)

    Reproduction steps:
    # Lone Survivor, Creative, Inventory Size: Realistic, no mods
    # create simplest mining ship: Cockpit, Drill, Small Reactor, Gyroscope, 6xThruster
    # enter the ship and start to mine nearby asteroid

    Observed behavior:
    Ship acceleration decreases as its mass increases [expected].
    After considerable mass is gained (at least 100t), ship stops to accelerate.
    Sometimes when moving in several directions at once and rolling, ship starts to accelerate again.

    => I think there might be some problem with floating precision and/or movement/acceleration matrix/quaternion degradation as the ship mass gradually increases.
    Maybe just forcing it to reset on some more conditions and/or once a while might do the trick ...

    Expected behavior:
    Ship should be able to accelerate no matter what it's mass is, provided it has at least one Thruster in given direction and enough power for it.


    1) original problem:
    # Lone Survivor, Survival, Inventory Size: Realistic
    # many mods (not needed to mention, reproduced without mods)
    # built small grid miner based on https://steamcommunity.com/sharedfiles/filedetails/?id=370970390 (3 large containers)
    # start drill asteroid, after some ore is mined, ship won't move in some directions
    # dump some ore, ship is able to move
    # when more thrusters are added, I can mine more ore until ship become stuck again

    2) problem was NOT reproduced when ship had its mass increased in one step:
    # I built small ship: Cockpit, Large Container, 6xThruster, Battery, Gyroscope
    # added 100000kg of Uranium Ingots
    -> ship still moves with very low acceleration [expected]

    3) reproduced with original blueprint under same conditions (Lone Survivor, Creative, Inventory Size: Realistic)
    -> just ship won't move at all at the beginning, maybe power problem because when I enable Small Reactor it starts to move (Battery was not enough to power all Thrusters)
    -> other observation was similar with report

    Original text:
    I've built myself a small grid miner, based off this ship: https://steamcommunity.com/sharedfiles/filedetails/?id=370970390, it weights ~27t when empty.

    When I start to drill, it's acceleration begin to decrease (understandable, ship is gaining weight).
    However after some time (currently about +60t of ore), it stops to move at all, becoming stuck.

    Ship did not became stuck in the asteroid because when I eject some of the mined ore, I can move again.
    IIRC when I add more Thrusters, I can carry more ore until the ship won't move again.

    I tried to reproduce it with simpler ship in creative (one Thruster in every direction and one Large Container filled with 15m3 of Uranium ingots), switched to survival - but the ship still moves, although really sluggish (as expected).

    Might be there some floating precision loss ?
    Also I have quite old NB (getting simulation speed decreased warning), that could also make the problem worse ... ?
    Last edited: Jul 17, 2018
  2. radam Senior Engineer

    Gyros work?
  3. haibusa2005 Trainee Engineer

    Maybe inner logic of the game related to physics - something in the lines "if acceleration<0.1, consider stationary"
  4. domingo Trainee Engineer

    Report updated.

    AFAIK yes.

    I didn't change "Unsupported Stations" - it is OFF.
    Anyway when I move in more directions (forward and left) and I roll, ship starts to accelerate.
  5. radam Senior Engineer

    I think i remember this behaviour from 2015
Thread Status:
This last post in this thread was made more than 31 days old.