Sim.sum_vels_ds: def of bend-prot@0.1.0.0
Import: import bend-prot@0.1.0.0/sim.bend as Sim
Lines 81-88 of bend-prot@0.1.0.0/sim.bend: https://jend.leeeet.dev/read.txt?path=bend-prot@0.1.0.0/sim.bend&start_line=81&end_line=88

import Base
import bend-prot@0.1.0.0/geom.bend as G

def sum_vels_ds(ds: List<&2, DynAtom>) -> G.Vec3:
  match ds:
    case Nil{}:
      G.V3{0.0, 0.0, 0.0}
    case h <> t:
      match h:
        case DA{serial, elem, pos, vel, frc, mass}:
          G.Vec3.add(vel, sum_vels_ds(t))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/geom.bend&name=Vec3
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/geom.bend&name=Vec3.add
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/sim.bend&name=DynAtom