Auto-drive in car does not avoid basic obstacles

[jkraybill]

Describe the bug

When doing auto-move in a car ("W" on overmap), my car was cruising at a speed of around 56mph, and smashed into a regular-sized wreck in the middle of an otherwise open section of road.

In trying to do basic repros in basic cars, I found that more often, the behaviour is to approach the wreck, come to a stop, and then say "Auto-drive cancelled." (Screenshot 1.)

I suspect the difference is in vehicle weight and acceleration/deceleration speed. My accident occurred in a very heavy hotted up SUV with military armor and a V8.

I couldn't reproduce the crash using a military APC, but could easily reproduce the "Auto-drive cancelled" issue. It was pretty easy to reproduce crashing into boulders when doing auto-move on off-road terrain.

I was able to reproduce the crash with an atomic sports car auto-driving down a straight road into a wreck (screenshot 2).

Steps To Reproduce

Find a section of road that has a wreck in it, and try to automove through it. Or go off-road and auto-drive somewhere that has a bunch of boulders.

Expected behavior

Auto-drive should never crash into stuff that the user could have at least stopped the vehicle in front of; ideally, auto-drive should navigate around obstacles including crashes and boulders if there are nearby obstacle-free areas.

Screenshots

Versions and configuration

• OS: Windows
  • OS Version: 10.0 1903
• Game Version: 0.D-12212-g532719ea83-dirty [64-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food]
  ]

Additional context

#38027 is obviously related but I'm not including boat behaviour in the scope of this report.

"Dangerzone maps" (#36983) doesn't solve this issue, in fact it appears to make auto-driving through a road section marked as dangerzone impossible -- after I marked a wreck as dangerous, I couldn't get a path through/around that section.

[ghost]

95% of the time, the vehicle stops when detecting an obstacle, in my experience, the longer/faster the vehicle is, the more risky it can be.

Ideally yes, we'd want the vehicle to navigate around obstacles, this is a hard problem. I am not up to it, I've left the autodrive system where it is, as I just cannot take it any further, as it starts getting very mathy, I would welcome anyone who wanted to approach that area though.

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