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;;; Copyright (C) 2025 Gene Pasquet
;;;
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <https://www.gnu.org/licenses/>.
(import enum [Enum]
math [sqrt])
(defclass Direction [Enum]
(setv UP "UP")
(setv DOWN "DOWN")
(setv LEFT "LEFT")
(setv RIGHT "RIGHT")
(defn [staticmethod] from-move [move]
#((.x-from-move Direction move)
(.y-from-move Direction move)))
(defn [staticmethod] x-from-move [move]
(if (>= (get move 0) 0)
Direction.RIGHT
Direction.LEFT))
(defn [staticmethod] y-from-move [move]
(if (>= (get move 0) 0)
Direction.DOWN
Direction.UP))
(defn [staticmethod] x-between-points [point1 point2]
(let [delta-x (abs (- (get point1 0) (get point2 0)))]
(if (>= delta-x 0)
Direction.RIGHT
Direction.LEFT))))
(defn neg [value]
(* -1 value))
(defn invert [move]
#((neg (get move 0))
(neg (get move 1))))
(defn merge-moves [moves]
(let [end-move #(0 0)]
(for [move moves]
(setv end-move
#((+ (get end-move 0) (get move 0))
(+ (get end-move 1) (get move 1)))))
end-move))
(defn sub-points [point1 point2]
#((- (get point2 0) (get point1 0))
(- (get point2 1) (get point2 1))))
(defn distance [point1 point2]
(sqrt (+ (** (- (get point1 0) (get point2 0)) 2)
(** (- (get point1 1) (get point2 1)) 2))))
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