ludic/packages/ludic.tracks/config.ludic

# config.ludic - how many kinds of print, how many of each the ground remembers, how the reader
# reads, and the port's defaults
export function tracks_config(tracks_st: mut TracksState, kinds: int, cap: int) -> void {
  tracks_st.tk_kinds = kinds
  tracks_st.tk_cap = cap
  tracks_st.tk_ring = new []Track
  tracks_st.tk_count = new []int
  tracks_st.tk_next = new []int
  for i in 0 .. kinds * cap { push(tracks_st.tk_ring, new Track) }
  for k in 0 .. kinds {
    push(tracks_st.tk_count, 0)
    push(tracks_st.tk_next, 0)
  }
}

# a reader at `name_at` or above can tell the animal; a print is fresh under `fresh` hours old,
# recent under `recent`, and old after
export function tracks_config_reading(tracks_st: mut TracksState, name_at: int, fresh: float, recent: float) -> void {
  tracks_st.tk_name_at = name_at
  tracks_st.tk_fresh_h = fresh
  tracks_st.tk_recent_h = recent
}

function tk_now() -> float {
  return TracksWorld.now()
}

function tk_named(tracks_st: TracksState) -> bool {
  return TracksWorld.skill() >= tracks_st.tk_name_at
}

function tk_bearing(yaw: float) -> string {
  return TracksWorld.bearing(yaw)
}