# ports.ludic - what a map asks the game: where its grid is centred, what is land, where you and
# the camp are, the day, and how far the view may be pushed. Unbound: a grid round the origin, all
# land, you and the camp at the origin on day 1, and nowhere the view may not go.
export port MinimapWorld {
  origin_x: fn() -> float = fn mm__zero        # the grid's centre
  origin_z: fn() -> float = fn mm__zero
  land: fn(float, float) -> bool = fn mm__land  # "explored" counts land only
  you_x: fn() -> float = fn mm__zero
  you_z: fn() -> float = fn mm__zero
  camp_x: fn() -> float = fn mm__zero
  camp_z: fn() -> float = fn mm__zero
  day: fn() -> int = fn mm__day                 # a mark remembers the day it was made
  lo_x: fn() -> float = fn mm__lo               # the view's centre stays inside these
  lo_z: fn() -> float = fn mm__lo
  hi_x: fn() -> float = fn mm__hi
  hi_z: fn() -> float = fn mm__hi
}

function mm__zero() -> float { return 0.0 }
function mm__land(x: float, z: float) -> bool { return true }
function mm__day() -> int { return 1 }
function mm__lo() -> float { return -1000000000.0 }
function mm__hi() -> float { return 1000000000.0 }