;;-*-Lisp-*-
(in-package goal)

;; name: path-h.gc
;; name in dgo: path-h
;; dgos: ENGINE, GAME

(defenum path-control-flag
  :bitfield #t
  :type uint32
  (display 0)
  (draw-line 1) ;; TODO - only seen it used to control debug drawing so far
  (draw-point 2) ;; TODO - only seen it used to control debug drawing so far
  (draw-text 3) ;; TODO - only seen it used to control debug drawing so far
  (not-found 4)
  )


;; DECOMP BEGINS

(deftype path-control (basic)
  "An abstraction around a [[curve]], providing tools such as:
- debug drawing
- conveniant vertex accessing
- vertex finding/searching algorithms"
  ((flags    path-control-flag)
   (name     symbol)
   (process  process-drawable)
   (curve    curve  :inline)
   )
  (:methods
    (new (symbol type process symbol float entity symbol) _type_)
    (debug-draw (_type_) none)
    (get-point-in-path! (_type_ vector float symbol) vector)
    (get-random-point (_type_ vector) vector :behavior process)
    (displacement-between-two-points-copy! (_type_ vector float float) vector)
    (displacement-between-two-points-normalized! (_type_ vector float) vector)
    (get-point-at-percent-along-path! (_type_ vector float symbol) vector)
    (displacement-between-points-at-percent-scaled! (_type_ vector float float) vector)
    (displacement-between-points-at-percent-normalized! (_type_ vector float) vector)
    (get-num-segments (_type_) float)
    (total-distance (_type_) float)
    (get-num-verts (_type_) int)
    (path-distance-equal-spacing (_type_ float) float)
    (average-segment-length (_type_ float) float)
    (get-furthest-point-on-path (_type_ vector) float)
    (get-path-percentage-at-furthest-point (_type_ vector) float)
    (path-control-method-24 (_type_ vector) vector)
    (should-display-marks? (_type_) symbol)
    (displacement-between-two-points! (_type_ vector float float) vector)
    )
  )


(set! (-> path-control method-table 9) nothing)

(deftype curve-control (path-control)
  "Identical in terms of data to a [[path-control]] but has different implementation"
  ()
  (:methods
    (new (symbol type process symbol float) _type_)
    )
  )


;; ERROR: Stack slot load at 32 mismatch: defined as size 4, got size 16
;; ERROR: Stack slot load at 32 mismatch: defined as size 4, got size 16
;; WARN: Return type mismatch object vs path-control.
(defmethod new path-control ((allocation symbol)
                           (type-to-make type)
                           (arg0 process)
                           (arg1 symbol)
                           (arg2 float)
                           (arg3 entity)
                           (arg4 symbol)
                           )
  (local-vars (v0-3 object) (sv-16 res-tag) (sv-32 float))
  (set! sv-32 arg2)
  (let ((s0-0 arg3)
        (s1-0 arg4)
        )
    (if (not s0-0)
        (set! s0-0 (-> arg0 entity))
        )
    (when (= arg1 'path)
      (let ((v0-0 (entity-actor-lookup s0-0 'path-actor 0)))
        (if v0-0
            (set! s0-0 v0-0)
            )
        )
      )
    (let ((s2-0 (the-as object 0)))
      (set! sv-16 (new 'static 'res-tag))
      (let* ((t9-1 (method-of-type res-lump get-property-data))
             (a1-2 arg1)
             (a2-2 'interp)
             (t0-1 #f)
             (t1-1 (the-as (pointer res-tag) (& sv-16)))
             (t2-1 *res-static-buf*)
             (s0-1 (t9-1 s0-0 a1-2 a2-2 sv-32 (the-as pointer t0-1) t1-1 t2-1))
             )
        (cond
          (s0-1
            (set! s2-0 (object-new allocation type-to-make (the-as int (-> type-to-make size))))
            (set! v0-3 (cond
                         ((nonzero? (the-as path-control s2-0))
                          (set! (-> (the-as path-control s2-0) process) (the-as process-drawable arg0))
                          (set! (-> (the-as path-control s2-0) name) arg1)
                          (set! (-> (the-as path-control s2-0) curve cverts) (the-as (inline-array vector) s0-1))
                          (set! v0-3 (-> sv-16 elt-count))
                          (set! (-> (the-as path-control s2-0) curve num-cverts) (the-as int v0-3))
                          v0-3
                          )
                         (else
                           (go process-drawable-art-error "memory")
                           )
                         )
                  )
            )
          (else
            (when (not s1-0)
              (set! s2-0 (object-new allocation type-to-make (the-as int (-> type-to-make size))))
              (cond
                ((nonzero? (the-as path-control s2-0))
                 (logior! (-> (the-as path-control s2-0) flags) (path-control-flag not-found))
                 (set! (-> (the-as path-control s2-0) process) (the-as process-drawable arg0))
                 (set! (-> (the-as path-control s2-0) name) arg1)
                 (set! (-> (the-as path-control s2-0) curve cverts) (the-as (inline-array vector) #f))
                 (set! (-> (the-as path-control s2-0) curve num-cverts) 0)
                 0
                 )
                (else
                  (go process-drawable-art-error "memory")
                  )
                )
              )
            )
          )
        )
      (the-as path-control s2-0)
      )
    )
  )

(defmethod should-display-marks? ((this path-control))
  (and *display-path-marks* (logtest? (-> this flags) (path-control-flag display)))
  )

(defmethod get-num-segments ((this path-control))
  (the float (+ (-> this curve num-cverts) -1))
  )

(defmethod get-num-verts ((this path-control))
  (-> this curve num-cverts)
  )

(defmethod path-distance-equal-spacing ((this path-control) (arg0 float))
  (* arg0 (get-num-segments this))
  )

(defmethod average-segment-length ((this path-control) (arg0 float))
  (/ arg0 (get-num-segments this))
  )

(defmethod new curve-control ((allocation symbol) (type-to-make type) (arg0 process) (arg1 symbol) (arg2 float))
  (let ((gp-0 (object-new allocation type-to-make (the-as int (-> type-to-make size)))))
    (set! (-> gp-0 process) (the-as process-drawable arg0))
    (set! (-> gp-0 name) arg1)
    (let* ((s3-1 (-> arg0 entity))
           (v1-2 arg1)
           (s2-0 (cond
                   ((= v1-2 'path)
                    'path-k
                    )
                   (else
                     (let ((s2-1 string->symbol))
                       (format (clear *temp-string*) "~A-k" arg1)
                       (s2-1 *temp-string*)
                       )
                     )
                   )
                 )
           )
      (let ((v1-3 (entity-actor-lookup s3-1 'path-actor 0)))
        (if v1-3
            (set! s3-1 v1-3)
            )
        )
      (when (not (get-curve-data! s3-1 (-> gp-0 curve) arg1 s2-0 arg2))
        (cond
          ((> (-> gp-0 curve num-cverts) 0)
           (set! (-> gp-0 type) path-control)
           )
          (else
            (logior! (-> gp-0 flags) (path-control-flag not-found))
            (set! (-> gp-0 curve cverts) (the-as (inline-array vector) #f))
            (set! (-> gp-0 curve num-cverts) 0)
            0
            )
          )
        )
      )
    gp-0
    )
  )