# needs.ludic - thirst and hunger climb with the game hours (midday is thirsty work, a run costs more
# than a graze, dawn and dusk are when they go down to drink), and a walker leaves droppings
function wl_needs(wildlife_st: mut WildlifeState, a: WildAnimal, gh: float) -> void {
  let h = WildlifeWorld.hour()
  var thirst = 8.0
  var hunger = 5.0
  if h > 11.0 and h < 16.0 { thirst = 12.0 }
  if a.state == WILD_FLEE or a.state == WILD_CHARGE {
    thirst = thirst * 3.0
    hunger = hunger * 2.0
  }
  if (h > 5.0 and h < 8.0) or (h > 18.0 and h < 21.0) { thirst = thirst * 1.8 }
  a.thirst = Math.min(a.thirst + thirst * gh, 100.0)
  a.hunger = Math.min(a.hunger + hunger * gh, 100.0)
  if not wl_sp(wildlife_st, a.sp).tracks { return }
  a.scat_t = a.scat_t - gh * 60.0
  if a.scat_t > 0.0 { return }
  a.scat_t = 120.0 + wl_rnd(wildlife_st) * 300.0
  wl_near(wildlife_st, a.x, a.z)
  if wl_pdist(wildlife_st.wl_near_i, a) > 500.0 { return }      # further than 500 m from everyone: nobody would find it
  wl_fact(wildlife_st, WILD_SCAT, a)
}