hello, since this is the only 0.40.x science thread i've found,
i might post my results of a large scale double soil layer drop/cave in here with Multi-Tile-Trees [ MTT ].
includes 10 pictures, sorry for broken english.
setup: version 0.40.02, phoebus tileset
3*3 embark forest with an aquifer
the first 2 soil layers (loam) will be dropped, about 60 by 60 Urist
including Multi-Tile-Trees [ MTT ], 8 of which with a diameter of 2 Urist, and some ponds
leading questions:
how will MTT, and their roots, react on cave-ins?
do attached dug-out stairs resist cave-ins?
bonus: some human volunteers, a sow strapped to a rope, 1 wild bear and its 3 cubs in seperate constructed cages, a group of animals in a pasture.
****DF computes 5mins~****
as to be expected all buildings deconstruct, except for the bridge with the human wagons on, attached to the wrong side.
dust shooting up to the highest z-level +16
pastured animals crash into each other on the way down.
masterworks are lost.
some animals and the human test subject show spontaneous combustion on impact, unknown behavior for these species.
the impact site, z-level -8
no MTT to be found, no logs to be seen (those in the middle are the ruins of a 2 story wooden house).
at the uppest level,the attached stairs turned to loam, a YES to my 2nd question.
as to be expected the duck and the cat survived the 8 story drop of all the animals(of the pasture).
the impact site, z-level -9
the ponds were transfered with some water loss, possible relation to volume, depth and original size of the pools.
MTT-roots vanished, leaving holes in the ground.
ground level
most of the MTT have vanished.
remaining MTT, downward ramps, bumblebee colonies and a hamster refuse to obey to gravity. which is still the law.
ramps have shown similar behaviour in past expirements.
above ground, z-level +1
MTT exist(?) as before on all z-levels.
building floor to reach the trunk seem to trigger the cave-in check.
parts of the tree collapse into thin air.
no logs are found.
after weeks more trees shift back into the dwarven realm of existence.
same behavior as the remaining first, MTT without a floor beneath them, seem to be trapped in a paradox state of being there or not, or both, and will vanish out of existence, by building a floor in its/their proximity.
the caged bears were assigned to a pasture, and may have been unharmed(from the fall), but i watched the trees reappear in the meantime, results unclear.
the sow had no chance, its piglet survived with a broken nose and a missing rear leg.
the human was fine overall, just some broken bones.
conclusion:
multi tile trees attached to a falling soil layer will not accept gravity or the common frame of reference , but will go into a metaphysical state of existence instead.
dugout stairs (attached to solid ground/rock) will resist a cave-in.
freefalling may result in spontaneous combustion on impact. results indecisive.
that was also on of my first thoughts, and i would also accept the roadrunner/coyote frame of reference as the possible explanation.
