# verbs.ludic - the only way the needs change from outside; each is held to 0..100
# `n` more of a need (less, when negative): a meal, a drink, a shove from a bear
export function needs_feed(needs_st: NeedsState, k: int, n: float) -> void {
  if nd_ok(k) { nd_add(needs_st, k, n) }
}

# a meal: food, water and energy at once
export function needs_meal(needs_st: NeedsState, food: float, water: float, energy: float) -> void {
  nd_add(needs_st, NEED_FOOD, food)
  nd_add(needs_st, NEED_WATER, water)
  nd_add(needs_st, NEED_ENERGY, energy)
}

export function needs_set(needs_st: NeedsState, k: int, v: float) -> void {
  if nd_ok(k) { nd_lv(needs_st)[k] = Math.clamp(v, 0.0, 100.0) }
}

# at least `v`
export function needs_floor(needs_st: NeedsState, k: int, v: float) -> void {
  if nd_ok(k) and nd_lv(needs_st)[k] < v { needs_set(needs_st, k, v) }
}

# a night: rested to what it was worth, hungrier and thirstier for it, but never empty
export function needs_after_night(needs_st: NeedsState, rested: float, food_lost: float, water_lost: float) -> void {
  let lv = nd_lv(needs_st)
  lv[NEED_ENERGY] = Math.clamp(rested, 0.0, 100.0)
  lv[NEED_FOOD] = Math.max(lv[NEED_FOOD] - food_lost, 6.0)
  if water_lost > 0.0 { lv[NEED_WATER] = Math.max(lv[NEED_WATER] - water_lost, 5.0) }
}

# the countdown called off, and nothing said (a wake, a load, a test)
export function needs_calm(needs_st: mut NeedsState) -> void { needs_st.nd_legs = 0.0 }

# the body went down, however: one more collapse, and no countdown running
export function needs_went_down(needs_st: mut NeedsState) -> void {
  needs_st.nd_collapses += 1
  needs_st.nd_legs = 0.0
}

# a hand up: the cost is in the body, and nothing goes below twenty
export function needs_helped_up(needs_st: mut NeedsState) -> void {
  let lv = nd_lv(needs_st)
  lv[NEED_WARMTH] = Math.max(20.0, lv[NEED_WARMTH] - 15.0)
  lv[NEED_FOOD] = Math.max(20.0, lv[NEED_FOOD] - 15.0)
  lv[NEED_WATER] = Math.max(20.0, lv[NEED_WATER] - 15.0)
  lv[NEED_ENERGY] = Math.max(20.0, lv[NEED_ENERGY] - 25.0)
  needs_st.nd_legs = 0.0
}

# a new trip: fed, watered, rested and warm, and never walked out
export function needs_reset(needs_st: mut NeedsState) -> void {
  nd_lv(needs_st)
  nd_fill(needs_st)
  needs_st.nd_legs = 0.0
  needs_st.nd_last = 0
  needs_st.nd_collapses = 0
  q_clear(needs_facts(needs_st))
}