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

;; name: text.gc
;; name in dgo: text
;; dgos: GAME, ENGINE

(define *game-text-word* (new 'global 'string 128 (the string '#f)))
(define *game-text-line* (new 'global 'string 256 (the string '#f)))
(define *level-text-file-load-flag* #t)

;; allocate the game text heap if it isn't already allocated.
(when (= 0 (-> *common-text-heap* base))
  (let ((heap *common-text-heap*))
    (set! (-> heap base) (malloc 'global 34816))
    (set! (-> heap current) (-> heap base))
    (set! (-> heap top-base) (&+ (-> heap base) 34816))
    (set! (-> heap top) (-> heap top-base))
    )
  )

(defmethod length game-text-info ((obj game-text-info))
  "Get the length (number of strings) in a game-text-info."
  (-> obj length)
  )

(defmethod asize-of game-text-info ((obj game-text-info))
  (the int (+ (-> obj type size) (* 8 (-> obj length))))
  )

(defmethod inspect game-text-info ((obj game-text-info))
  (format '#t "[~8x] ~A~%" obj (-> obj type))
  (format '#t "~Tlength: ~D~%" (-> obj length))
  (format '#t "~Tdata[~D]: @ #x~X~%" (-> obj length) (-> obj data))
  
  (let ((i 0))
    (while (< i (-> obj length))
      (format '#t "~T  [~D] #x~X ~A~%" i (-> obj data i id) (-> obj data i text))
      (+! i 1)
      )
    )
  obj
  )

(defmethod mem-usage game-text-info ((obj game-text-info) (arg0 memory-usage-block) (arg1 int))
  "Get the memory usage."
  (set! (-> arg0 length) (max 81 (-> arg0 length)))
  (set! (-> arg0 data 80 name) "string")
  (set! (-> arg0 data 80 count) (+ (-> arg0 data 80 count) 1))

  ;; get the size of this structure
  (let ((v1-6 (asize-of obj)))
    (set! (-> arg0 data 80 used) (+ (-> arg0 data 80 used) v1-6))
    (set! (-> arg0 data 80 total)
          (+ (-> arg0 data 80 total) (logand -16 (+ v1-6 15)))
          )
    )

  ;; get the size of all the strings
  (dotimes (s4-0 (-> obj length))
    (set! (-> arg0 length) (max 81 (-> arg0 length)))
    (set! (-> arg0 data 80 name) "string")
    (set! (-> arg0 data 80 count) (+ (-> arg0 data 80 count) 1))
    (let ((v1-18 (asize-of (-> obj data s4-0 text))))
      (set! (-> arg0 data 80 used) (+ (-> arg0 data 80 used) v1-18))
      (set! (-> arg0 data 80 total)
            (+ (-> arg0 data 80 total) (logand -16 (+ v1-18 15)))
            )
      )
    )
  obj
  )

(defmethod lookup-text! game-text-info ((obj game-text-info) (arg0 game-text-id) (arg1 symbol))
  "Look up text by ID.  Will return the string.
   If the ID can't be found, and arg1 is #t, it will return #f,
   otherwise the temp string UNKNOWN ID <id number>"

  ;; binary search for it
  (let* ((a1-1 0)                     ;; min
         (a3-0 (+ (-> obj length) 1)) ;; max
         (v1-2 (/ (+ a1-1 a3-0) 2))   ;; mid
         )
    (let ((t0-0 -1)) ;; last time's lookup
      (while (and (!= (-> obj data v1-2 id) arg0) (!= v1-2 t0-0)) ;; while we haven't found it/not the same as last time
        (if (< arg0 (-> obj data v1-2 id))
            (set! a3-0 v1-2) ;; bisect, right
            (set! a1-1 v1-2) ;; bisect, left
            )
        (set! t0-0 v1-2) ;; remeber last time
        (set! v1-2 (/ (+ a1-1 a3-0) 2)) ;; midpoint for next time
        )
      )
    (cond
      ((!= (-> obj data v1-2 id) arg0) ;; didn't find it :(
       (cond
         (arg1
          (the-as string #f)
          )
         (else
          (format (clear *temp-string*) "UNKNOWN ID ~D" arg0)
          *temp-string*
          )
         )
       )
      (else
       (-> obj data v1-2 text) ;; found it!
       )
      )
    )
  )

(define text-is-loading #f)

;; todo load-game-text-info

(defun load-game-text-info ((txt-name string) (curr-text symbol) (heap kheap))
  "Load text, if needed."
  (local-vars
   (v0-2 int)
   (heap-sym-heap game-text-info)
   (lang int)
   (load-status int)
   (heap-free int)
   )
  (set! heap-sym-heap (the-as game-text-info (-> curr-text value)))
  (set! lang (-> *setting-control* current language))
  (set! load-status 0)
  (set! heap-free (&- (-> heap top) (the-as uint (-> heap base))))
  (if (and (= (scf-get-territory) 1) (zero? lang))
      (set! lang 6)
      )
  (when (or (= heap-sym-heap #f)
            (!= (-> heap-sym-heap language-id) lang)
            (not (string= (-> heap-sym-heap group-name) txt-name))
            )
    (let ((v1-16 heap))
      (set! (-> v1-16 current) (-> v1-16 base))
      )
    (b! #t cfg-14)
    (label cfg-13)
    (load-dbg "Strange error during text load.~%")
    (set! v0-2 0)
    (b! #t cfg-27)
    (label cfg-14)
    (let ((s3-0 str-load))
      (format (clear *temp-string*) "~D~S.TXT" lang txt-name)
      ;; this branch is super weird.
      (b! (not (s3-0
                *temp-string*
                -1
                (logand -64 (&+ (-> heap current) 63))
                (&- (-> heap top) (the-as uint (-> heap current)))
                )
               )
          cfg-13
          )
      )
    (label cfg-16)
    (let ((v1-20 (str-load-status (the-as (pointer int32) (& load-status)))))
      (cond
        ((= v1-20 'error)
         (format 0 "Error loading text~%")
         (return 0)
         )
        ((>= load-status (+ heap-free -300))
         (format 0 "Game text heap overrun!~%")
         (return 0)
         )
        ((= v1-20 'busy)
         (begin
          (nop!)
          (nop!)
          (nop!)
          (nop!)
          (nop!)
          (nop!)
          (goto cfg-16)
          )
         )
        )
      )
    (let ((s2-1 (logand -64 (&+ (-> heap current) 63))))
      (flush-cache 0)
      (let ((s3-1 link))
        (format (clear *temp-string*) "~D~S.TXT" lang txt-name)
        (set!
         (-> curr-text value)
         (s3-1 s2-1 (-> *temp-string* data) load-status heap 0)
         )
        )
      )
    (if (<= (the-as int (-> curr-text value)) 0)
        (set! (-> curr-text value) (the-as object #f))
        )
    )
  (set! v0-2 0)
  (label cfg-27)
  v0-2
  )

(defun load-level-text-files ((arg0 int))
  (if (or *level-text-file-load-flag* (>= arg0 0))
      (load-game-text-info "common" '*common-text* *common-text-heap*)
      )
  0
  (none)
  )
;; todo load-level-text-files
;; todo draw-debug-text-box
;; todo set-font-color-alpha
;; todo print-game-text-scaled
;; todo print-game-text
;; todo disable-level-text-file-loading
;; todo enable-level-text-file-loading