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

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


(defmethod inspect load-dir ((obj load-dir))
  "Print all the stuff in a load-dir"
  (format #t "[~8x] ~A~%" obj (-> obj type))
  (format #t "~Tlevel: ~A~%" (-> obj unknown))
  (format #t "~Tallocated-length: ~D~%" (-> obj string-array allocated-length))
  (format #t "~Tlength: ~D~%" (-> obj string-array length))
  (dotimes (i (-> obj string-array length))
    (format #t "~T  [~D] ~S ~A  (~D bytes)~%"
              i (-> obj string-array i) (-> obj data-array i) (mem-size (-> obj data-array i) #f 0))
    )
  obj
  )

(defmethod mem-usage load-dir ((obj load-dir) (arg0 memory-usage-block) (arg1 int))
  "Get the memory usage data of a load-dir"

  (set! (-> arg0 length) (max 82 (-> arg0 length)))
  (set! (-> arg0 data 81 name) "array")
  (set! (-> arg0 data 81 count) (+ (-> arg0 data 81 count) 1))
  (let ((v1-6 (asize-of obj)))
   (set! (-> arg0 data 81 used) (+ (-> arg0 data 81 used) v1-6))
   (set!
    (-> arg0 data 81 total)
    (+ (-> arg0 data 81 total) (logand -16 (+ v1-6 15)))
    )
   )
  (set! (-> arg0 length) (max 82 (-> arg0 length)))
  (set! (-> arg0 data 81 name) "array")
  (set! (-> arg0 data 81 count) (-> arg0 data 81 count))
  (let ((v1-15 (asize-of (-> obj string-array))))
   (set! (-> arg0 data 81 used) (+ (-> arg0 data 81 used) v1-15))
   (set!
    (-> arg0 data 81 total)
    (+ (-> arg0 data 81 total) (logand -16 (+ v1-15 15)))
    )
   )
  (set! (-> arg0 length) (max 82 (-> arg0 length)))
  (set! (-> arg0 data 81 name) "array")
  (set! (-> arg0 data 81 count) (-> arg0 data 81 count))
  (let ((v1-24 (asize-of (-> obj data-array))))
   (set! (-> arg0 data 81 used) (+ (-> arg0 data 81 used) v1-24))
   (set!
    (-> arg0 data 81 total)
    (+ (-> arg0 data 81 total) (logand -16 (+ v1-24 15)))
    )
   )
  (dotimes (s3-0 (-> obj data-array length))
   (mem-usage (-> obj data-array s3-0) arg0 arg1)
   )
  (the-as load-dir #f)
  )

(defmethod load-to-heap-by-name load-dir-art-group ((obj load-dir-art-group) (art-name string) (do-reload symbol) (heap kheap) (version int))
  "Load the art with the given name to the heap and return the art.
  Won't load a thing if it's already loaded, unless you set do-reload.
  This is intended for debug only."
  
  ;; see if we already have it.
  (let ((s5-0 (-> obj string-array)))
    (dotimes (s3-0 (-> s5-0 length))
      (when (string= art-name (-> s5-0 s3-0))
        (when do-reload
          ;; we have it, reload it if requested
          (let ((v1-4 (art-group-load-check art-name heap version)))
            (if v1-4
                (set! (-> obj art-group-array s3-0) v1-4)
                )
            )
          )
        (return (-> obj art-group-array s3-0))
        )
      )
    
    ;; nope, we don't have it,add it to the list.
    (let ((v0-2 (art-group-load-check art-name heap version)))
      (when v0-2
        (set! (-> s5-0 (-> s5-0 length)) art-name)
        (set! (-> obj art-group-array (-> s5-0 length)) v0-2)
        (+! (-> s5-0 length) 1)
        (+! (-> obj art-group-array length) 1)
        )
      v0-2
      )
    )
  )

(defmethod set-loaded-art load-dir-art-group ((obj load-dir-art-group) (arg0 art-group))
  "Add some already loaded art to the load-dir."

  (let ((s4-0 (-> obj string-array)))
   (dotimes (s3-0 (-> s4-0 length))
    (when (string= (-> arg0 name) (-> s4-0 s3-0))
      (set! (-> obj art-group-array s3-0) arg0)
      (return (-> obj art-group-array s3-0))
      )
    )
   (set! (-> s4-0 (-> s4-0 length)) (-> arg0 name))
   (set! (-> obj art-group-array (-> s4-0 length)) arg0)
   (set! (-> s4-0 length) (+ (-> s4-0 length) 1))
   )
  (set! (-> obj art-group-array length) (+ (-> obj art-group-array length) 1))
  arg0
  )

(defun drawable-load ((arg0 drawable) (arg1 kheap))
  "Load a drawable file. Unused."

  (cond
   ((type-type? (-> arg0 type) string)
    #|(with-sp (protect sp
      (if (< sp *stack-top*)
        (set! sp (&+ *kernel-sp* -1024))
        )|#
    (let ((s5-1 (the-as drawable (loado (the-as string arg0) arg1))))
      (if (and s5-1 (type-type? (-> s5-1 type) drawable))
        (login s5-1)
        )
      )
    ;;))
    )
   ((type-type? (-> arg0 type) drawable)
    (login arg0)
    )
   )
  )

(defun art-load ((arg0 string) (arg1 kheap))
  "Load an art file. Unused."

  #|(with-sp (protect sp
    (if (< sp *stack-top*)
      (set! sp (&+ *kernel-sp* -1024))
      )|#
    (let ((s5-0 (the-as art (loado arg0 arg1))))
      (if (type-type? (-> s5-0 type) art)
              (login s5-0)
              (the-as art #f)
              )
      )
    ;;))
  )

(defun art-group-load-check ((arg0 string) (arg1 kheap) (arg2 int))
  "Load and check an art-group file. this only runs if we're using debug memory."

  (when *debug-segment*
    #|(with-sp (protect sp
      (if (< sp *stack-top*)
        (set! sp (&+ *kernel-sp* -1024))
        )|#
      (let ((s3-1 (the-as art-group (loado (make-file-name (file-kind art-group) arg0 arg2 #f) arg1))))
        (cond
          ((not s3-1)
           (format 0 "ERROR: art-group ~A is not a valid file.~%" arg0)
           (the-as art-group #f)
           )
          ((not (type-type? (-> s3-1 type) art-group))
           (format 0 "ERROR: art-group ~A is not a art-group.~%" arg0)
           (the-as art-group #f)
           )
          ((not (file-info-correct-version? (-> s3-1 info) (file-kind art-group) arg2))
           ;;     ^ prints a detailed error if it fails.
           ;;(format 0 "ERROR: art-group ~A is not the correct version.~%" arg0)
           (the-as art-group #f)
           )
          (else
           (login s3-1)
           )
          )
        )
      ;;))
    )
  )

(defmethod set-pending-file external-art-buffer ((obj external-art-buffer) (arg0 string) (arg1 int) (arg2 handle) (arg3 float))
  "Request a new file to be loaded into this buffer."

  (set! (-> obj pending-load-file) arg0)
  (set! (-> obj pending-load-file-part) arg1)
  (set! (-> obj pending-load-file-owner) arg2)
  (set! (-> obj pending-load-file-priority) arg3)
  0
  )

(defmethod unlock! external-art-buffer ((obj external-art-buffer))
  "Unlock this buffer."

  (declare (inline))
  (set! (-> obj locked?) #f)
  #f
  )

(defmethod inactive? external-art-buffer ((obj external-art-buffer))
  "Is this buffer inactive?"

  (declare (inline))
  (!= (-> obj status) 'active)
  )

(defmethod file-status external-art-buffer ((obj external-art-buffer) (name string) (part int))
  "Get the status of a file in the buffer. #f = file is not present."

  (when (and (name= (-> obj pending-load-file) name)
             (= (-> obj pending-load-file-part) part)
             )
    ;; the file is at least wanting to load
    (if (and (name= (-> obj load-file) name) (= (-> obj load-file-part) part))
      (-> obj status) ;; file is loaded or loading
      'pending        ;; file has not started loading yet.
      )
    )
  )

(defmethod link-art! art-group ((obj art-group))
  "Links the elements of this art-group.
   This will put a reference to this joint animation in the level art group.
   Level art groups have slots for temporarily loaded joint animations."

  (when obj
   (countdown (s5-0 (-> obj length))
    (let* ((art-elt (-> obj data s5-0))
           (janim (if (and (nonzero? art-elt) (type-type? (-> art-elt type) art-joint-anim))
                              (the-as art-joint-anim art-elt)
                              ))
           (success #f)
           )
        (when janim
          ;; a countdown with a label right at the start
          (let ((s3-1 3))
           (while (begin
                   (label cfg-22)
                   (nonzero? s3-1)
                   )
             ;; loop over levels, looking for the master art group for this joint animation.
            (+! s3-1 -1)
            (let ((janim-group (art-group-get-by-name (-> *level* level s3-1) (-> janim master-art-group-name))))
                (when janim-group
                  (cond
                    ((and (< (-> janim master-art-group-index) (-> janim-group length)) ;; index is valid
                          (not (-> janim-group data (-> janim master-art-group-index))) ;; doesn't already have it loaded
                          )
                     ;; link!
                     (set! (-> janim-group data (-> janim master-art-group-index)) janim)
                     (set! success #t)
                     )
                    (else
                      ;; if the specified index is no good, just try looking for somewhere else.
                     (countdown (a0-14 (-> janim-group length))
                       (when (not (-> janim-group data a0-14))
                         ;; found an empty one!
                         (set! (-> janim-group data a0-14) janim)
                         (set! success #t)
                         (goto cfg-22)
                         )
                       )
                     )
                    )
                  )
                )
            )
           )
          (if (not success)
            (format 0 "ERROR: ~A could not find a master slot to link for ~A.~%" (-> obj name) janim)
            )
          )
        )
    )
   )
  obj
  )

(defmethod unlink-art! art-group ((obj art-group))
  "Unlinks the elements of this art-group.  This will undo the link-art! function."

  (when obj
    (countdown (s5-0 (-> obj length))
      (let* ((art-elt (-> obj data s5-0))
             (janim (if (and (nonzero? art-elt) (type-type? (-> art-elt type) art-joint-anim))
                               (the-as art-joint-anim art-elt)
                               ))
             (success #f)
             )
          (when janim
            (let ((s2-0 3))
              (while (begin
                      (label cfg-16)
                      (nonzero? s2-0)
                      )
                (+! s2-0 -1)
                (let ((janim-group (art-group-get-by-name (-> *level* level s2-0) (-> janim master-art-group-name))))
                  (when janim-group
                    (countdown (a0-5 (-> janim-group length))
                      (when (= janim (-> janim-group data a0-5))
                        (set! (-> janim-group data a0-5) #f)
                        (set! success #t)
                        (goto cfg-16)
                        )
                      )
                    )
                  )
                )
              )
            (if (not success)
              (format 0 "ERROR: ~A could not find a master slot to unlink for ~A.~%" (-> obj name) janim)
              )
            )
          )
      )
    )
  0
  )

(defmethod link-file external-art-buffer ((obj external-art-buffer) (ag art-group))
  "Link the art-group and set it to this buffer's art group."

  (when ag
    (link-art! ag)
    (set! (-> obj art-group) ag)
    )
  ag
  )

(defmethod unlink-file external-art-buffer ((obj external-art-buffer) (ag art-group))
  "Unlink the art-group and remove this buffer's art group."

  (when ag
    (unlink-art! ag)
    (set! (-> obj art-group) #f)
    )
  0
  )

(defmethod update external-art-buffer ((obj external-art-buffer))
  "Update this buffer."

  (when (or (not (name= (-> obj pending-load-file) (-> obj load-file)))
            (!= (-> obj pending-load-file-part) (-> obj load-file-part))
            )
   ;; we're loading a different file, or a different part of a file
   (unless (handle->process (-> obj pending-load-file-owner))
    ;; nobody owns the loading file so we can discard it
    (set! (-> obj pending-load-file) #f)
    (set! (-> obj pending-load-file-part) -1)
    (set! (-> obj pending-load-file-owner) (the-as handle #f))
    (set! (-> obj pending-load-file-priority) SPOOL_PRIORITY_LOWEST)
    )
   (when (= (-> obj status) 'initialize)
    ;; we need to initialize the heap
    (let ((v1-11 (-> obj heap)))
      ;; Scary: this is a hard coded address that points to the kernel memory.
      ;; it turns out the kernel doesn't need this. So we can use it!
     (set! (-> v1-11 base) (the-as pointer (+ #x84000 (* #x3dc00 (-> obj index)))))
     (set! (-> v1-11 current) (-> v1-11 base))
     (set! (-> v1-11 top-base) (&+ (-> v1-11 base) #x3dc00))
     (set! (-> v1-11 top) (-> v1-11 top-base))
     )
    (set! (-> obj status) 'inactive)
    ;; heap is now allocated, but there is no data to use
    )
   (cond
    ((-> obj load-file)
     ;; the buffer is working on a file
     (if (= (-> obj status) 'loading)
       ;; something else is already loading, cancel that because we want something else
       (str-load-cancel)
       )
     ;; now nothing is loaded!
     (set! (-> obj load-file) #f)
     (set! (-> obj load-file-part) -1)
     (set! (-> obj load-file-owner) (the-as handle #f))
     (set! (-> obj load-file-priority) SPOOL_PRIORITY_LOWEST)
     ;; on the next time through, we will set the actual load file.
     )
    (else
     ;; we have officially chosen to load this file
     
     (set! (-> obj load-file) (-> obj pending-load-file))
     (set! (-> obj load-file-part) (-> obj pending-load-file-part))
     (set! (-> obj load-file-owner) (-> obj pending-load-file-owner))
     (set! (-> obj load-file-priority) (-> obj pending-load-file-priority))
     )
    )
   )
  
  
  (label cfg-18)
  (cond
   ((-> obj load-file)
    ;; something is being worked on
    (case (-> obj status) 
     (('active 'reserved)
       ;; file is loaded and usable (or reserved)
       )
     (('error)
      ;; oops an error happened. make this buffer unusable now.
      (set! (-> obj status) 'inactive)
      (set! (-> obj load-file) #f)
      (set! (-> obj load-file-part) -1)
      (set! (-> obj load-file-owner) (the-as handle #f))
      (set! (-> obj load-file-priority) SPOOL_PRIORITY_LOWEST)
      (set! (-> obj pending-load-file) #f)
      (set! (-> obj pending-load-file-part) -1)
      (set! (-> obj pending-load-file-owner) (the-as handle #f))
      (set! (-> obj pending-load-file-priority) SPOOL_PRIORITY_LOWEST)
      (set! (-> obj art-group) #f)
      )
     (('inactive)
      ;; no usable data here, fill the buffer
      (kheap-reset (-> obj heap))
      (cond
       ((string= (-> obj load-file) "reserved") ;; we want to reserve this buffer for something (not loading an str file)
        (cond
         ((-> *art-control* reserve-buffer)
          (format 0 "ERROR: trying double reserve ~A when ~A is reserved~%" obj (-> *art-control* reserve-buffer))
          )
         (else
          (set! (-> obj status) 'reserved)
          (set! (-> *art-control* reserve-buffer) obj) ;; this buffer is reserved
          )
         )
        )
       ((and (!= (-> *level* loading-level) (-> *level* level-default))
                 (< (meters 20) (-> obj load-file-priority))
                 )
        ;; unused cond
        )
       ((str-load (-> obj load-file) (-> obj load-file-part) (the pointer (align64 (-> obj heap current))) #x3fc00) ;; try to start load
        ;; load has started!!
        (set! (-> obj status) 'loading)
        )
       )
      )
     (('loading)
      ;; loading...
      (case (str-load-status (&-> obj len)) 
       (('error)
         ;; something went wrong. oh well.
         (set! (-> obj status) 'error)
         )
       (('busy)
        ;; loading. we have nothing to do.
        )
       (else
        ;; done!!
        ;; not sure it is a good idea to assume that this is a success...
        (set! (-> obj buf) (the pointer (align64 (-> obj heap current))))
        (set! (-> obj status) 'loaded)
        (goto cfg-18) ;; go back and check status again!
        )
       )
      )
     (('loaded)
      ;; file is loaded. link it and see if we're good
      (let ((a0-37 (-> obj buf)))
       (set! (-> obj art-group) (the-as art-group (link (the-as pointer a0-37) (-> obj load-file data) (-> obj len) (-> obj heap) 0)))
       )
      (let ((s4-0 (-> obj art-group))
            (s3-0 (-> obj load-file))
            )
       (cond
        ((not s4-0)
         (format 0 "ERROR: art-group ~A part ~D is not a valid file.~%" s3-0 (-> obj load-file-part))
         (set! (-> obj status) 'error)
         )
        ((not (type-type? (-> s4-0 type) art-group))
         (format 0 "ERROR: art-group ~A part ~D is not a art-group.~%" s3-0 (-> obj load-file-part))
         (set! (-> obj status) 'error)
         )
        ((not (file-info-correct-version? (-> s4-0 info) (file-kind art-group) 0))
         ;;(format 0 "ERROR: art-group ~A part ~D is the wrong version.~%" s3-0 (-> obj load-file-part))
         (set! (-> obj status) 'error)
         )
        (else
         (login s4-0)
         (set! (-> obj status) 'locked) ;; make file ready to be used
         )
        )
       )
      )
     (('locked)
      ;; this buffer is locked and needs to be unlocked before it can be used.
      ;; only one buffer can be active at a time. The other buffer is locked to prevent it from activating.
      (when (and (not (-> obj locked?)) (handle->process (-> obj load-file-owner)))
       ;; we want to be used, unlock this buffer and lock the other just in case.
       (link-file obj (-> obj art-group))
       (set! (-> obj other locked?) #t) ;; prevent it from becoming active
       (set! (-> obj status) 'active)
       (goto cfg-18)
       )
      )
     )
    )
   (else
    ;; we want to get rid of the file!
    (case (-> obj status) 
     (('initialize)
      ;; this was done earlier
      )
     (('reserved)
      ;; this buffer is reserved
      (cond
       ((= (-> *art-control* reserve-buffer) obj) ;; yep it's this one!
        (set! (-> *art-control* reserve-buffer) #f)
        (set! (-> obj status) 'inactive)
        )
       (else
        (format 0 "ERROR: trying tro free ~A when ~A is reserved~%" obj (-> *art-control* reserve-buffer))
        )
       )
      )
     (('active)
      ;; buffer is in use. not anymore!
      (unlink-file obj (-> obj art-group))
      (let ((v1-70 (-> obj heap)))
       (set! (-> v1-70 current) (-> v1-70 base))
       )
      (set! (-> obj art-group) #f)
      (set! (-> obj status) 'inactive)
      ;; if the other is locked due to us, unlock it, then update it so it activates.
      (when (-> obj other locked?)
       (unlock! (-> obj other))
       (update (-> obj other))
       )
      )
     (else
      ;; some other scenario, just get rid of the whole thing.
      (let ((v1-79 (-> obj heap)))
       (set! (-> v1-79 current) (-> v1-79 base))
       )
      (set! (-> obj art-group) #f)
      (set! (-> obj status) 'inactive)
      )
     )
    )
   )
  0
  )


;; start loading a spooled anim if we think one is about to be used, e.g. when approaching a fuel cell or npc
;; (some processes may want to wait for the stream to be preloaded, which won't happen with this disabled)
(define *preload-spool-anims* #t)

(defmethod file-status external-art-control ((obj external-art-control) (name string) (part int))
  "Get the status of a file in this art control. #f = file not found"

  (dotimes (i 2)
    (awhen (file-status (-> obj buffer i) name part)
      (return it)
      )
    )
  #f
  )

(defmethod update external-art-control ((obj external-art-control) (debug-print symbol))
  "Update this external-art-control. This validates the spool buffers, sorts the spools, advances str-play-queue, and does some other things.
   If debug-print, also prints some text to the display console"

  ;; if somebody wants a reserve buffer, they will set this to 1.
  (if (nonzero? (-> obj reserve-buffer-count))
    (spool-push obj "reserved" 0 *dproc* (if (-> obj reserve-buffer)
                                          -110.0
                                          -0.5)
                                        )
   )
  
  ;; frame-lock will get set to #t if something is assigned to this buffer in this update.
  (dotimes (v1-5 2)
    (set! (-> obj buffer v1-5 frame-lock) #f) 
    )
  
  ;; buffers assigned from this call to update
  (dotimes (v1-8 3)
    (set! (-> obj rec v1-8 buf2) #f)
    )
  
  ;; update existing buffers from their recs
  (dotimes (s4-0 2)
   (let ((s3-0 (-> obj rec s4-0)))
    (when (-> s3-0 name)
      ;; iterate over the two buffers
     (dotimes (s2-0 2)
      (when (and (file-status (-> obj buffer s2-0) (-> s3-0 name) (-> s3-0 parts)) ;; this buffer holds the file for the rec
                 (not (-> obj buffer s2-0 frame-lock)) ;; and nothing has frame-locked this buffer
                 )
        ;; so we frame lock it to prevent it from being kicked out
        (set! (-> obj buffer s2-0 frame-lock) #t)
        ;; remember what buffer
        (set! (-> s3-0 buf2) (-> obj buffer s2-0))
        ;; update owner and priority.
        (set! (-> obj buffer s2-0 pending-load-file-owner) (-> s3-0 owner))
        (set! (-> obj buffer s2-0 load-file-owner) (-> s3-0 owner))
        (set! (-> obj buffer s2-0 pending-load-file-priority) (-> s3-0 priority))
        (set! (-> obj buffer s2-0 load-file-priority) (-> s3-0 priority))
        (goto cfg-24) ;; buffer found, move on.
        )
      )
     )
    )
   (label cfg-24)
   )

  ;; preload recs
  ;; iterate over recs
  (dotimes (s4-1 2)
   (let ((s3-1 (-> obj rec s4-1)))
     ;; rec wants to load something, but doesn't have a buffer already
    (when (and (-> s3-1 name) (not (-> s3-1 buf2)))
      ;; skip if we aren't preloading, or have a positive priority.
     (if (and (not *preload-spool-anims*) (>= (-> s3-1 priority) 0.0))
       ;; not in use, move on
       (goto cfg-46)
       )
     ;; search for a buffer for preloading
     (dotimes (s2-1 2)
       ;; can't steal one that's already assigned
       (when (not (-> obj buffer s2-1 frame-lock))
         ;; do the assignment!
         (set! (-> obj buffer s2-1 frame-lock) #t)
         (set-pending-file (-> obj buffer s2-1) (-> s3-1 name) (-> s3-1 parts) (-> s3-1 owner) (-> s3-1 priority))
         (set! (-> s3-1 buf2) (-> obj buffer s2-1))
         (goto cfg-46)
         )
       )
     )
    )
   (label cfg-46)
   )

  ;; this part is a bit confusing, but I think it basically kicks out the lowest priority thing.
  (when (not (-> obj reserve-buffer))
   (let ((s4-2 (-> obj rec 0 buf2))) ;; top priority buffer
    (if (and s4-2
             (-> s4-2 locked?)
             (not (string= (-> s4-2 pending-load-file) "reserved"))
             (not (string= (-> s4-2 other pending-load-file) "reserved"))
             )
     (set-pending-file (-> s4-2 other) (the-as string #f) -1 (the-as handle #f) SPOOL_PRIORITY_LOWEST)
     )
    )
   )

  ;; update the buffers
  (dotimes (s4-3 2)
   (update (-> obj buffer s4-3))
   )

  ;; sort spool anims.
  (let ((s4-4 (the-as spool-anim #f)))
   (countdown (s3-2 3)
    (if (and (-> obj rec s3-2 name)
             (not (name= (-> obj rec s3-2 name) (-> obj active-stream)))
             )
      (set! s4-4 (-> obj rec 0))
      )
    )
   (if (and (-> obj preload-stream name)
            (or (not s4-4) (< (-> obj preload-stream priority) (-> s4-4 priority)))
            )
     (set! s4-4 (-> obj preload-stream))
     )
   (cond
    (s4-4
     (mem-copy! (&-> (-> obj last-preload-stream) type) (&-> s4-4 type) (size-of spool-anim))
     (str-play-queue (-> s4-4 name))
     )
    (else
     (set! (-> obj last-preload-stream name) #f)
     (set! (-> obj last-preload-stream owner) (the-as handle #f))
     )
    )
   )

  (when (and debug-print *display-art-control*)
    (dotimes (s5-1 3)
      (format *stdcon* "rec ~d ~S ~D ~f ~A~%" s5-1 (-> obj rec s5-1 name) (-> obj rec s5-1 parts) (-> obj rec s5-1 priority) (handle->name (-> obj rec s5-1 owner)))
      )
    (dotimes (s5-2 2)
      (format *stdcon* "buf ~d ~C ~S ~D ~A ~A~%" s5-2 (if (-> obj buffer s5-2 locked?) #\l #\\s) (-> obj buffer s5-2 pending-load-file) (-> obj buffer s5-2 pending-load-file-part) (-> obj buffer s5-2 status) (handle->name (-> obj buffer s5-2 pending-load-file-owner)))
      )
    (format *stdcon* " a: ~S~%" (-> obj active-stream))
    (format *stdcon* " p: ~S  ~A~%" (-> obj preload-stream name) (handle->name (-> obj preload-stream owner)))
    (format *stdcon* " q: ~S  ~A~%" (-> obj last-preload-stream name) (handle->name (-> obj last-preload-stream owner)))
    )
  0
  )

(defmethod none-reserved? external-art-control ((obj external-art-control))
  "are there any reserved buffers?"
  (declare (inline))
  (zero? (-> obj reserve-buffer-count))
  )

(defmethod reserve-alloc external-art-control ((obj external-art-control))
  "Reserve a buffer!"

  (set! (-> obj reserve-buffer-count) 1)
  (if (-> obj reserve-buffer)
   (-> obj reserve-buffer heap)
   )
  )

(defmethod reserve-free external-art-control ((obj external-art-control) (arg0 kheap))
  "Free the reserved buffer!"

  (cond
   ((none-reserved? obj)
    (format 0 "ERROR: illegal attempt to free a buffer #x~X which had not been reserved (none reserved).~%" arg0)
    )
   ((not (-> obj reserve-buffer))
    (set! (-> obj reserve-buffer-count) 0)
    )
   ((= (-> obj reserve-buffer heap) arg0)
    (set-pending-file (-> obj reserve-buffer) (the-as string #f) -1 (the-as handle #f) SPOOL_PRIORITY_LOWEST)
    (update (-> obj reserve-buffer))
    (set! (-> obj reserve-buffer-count) 0)
    )
   (else
    (format 0 "ERROR: illegal attempt to free a buffer #x~X which had not been reserved (buffer unknown).~%" arg0)
    )
   )
  0
  )

(defmethod clear-rec external-art-control ((obj external-art-control))
  "Clears the recent spool anims from the art control."

  (cond
   ((!= *master-mode* 'game)
    (dotimes (s5-0 3)
     (when (name= (-> obj rec s5-0 name) "reserved")
      (case s5-0
        ((0)
         (mem-copy! (&-> obj rec 0 type) (&-> obj rec 1 type) (size-of spool-anim))
         (mem-copy! (&-> obj rec 1 type) (&-> obj rec 2 type) (size-of spool-anim))
         )
        ((1)
         (mem-copy! (&-> obj rec 1 type) (&-> obj rec 2 type) (size-of spool-anim))
         )
       )
      (set! (-> obj rec 2 type) spool-anim)
      (set! (-> obj rec 2 name) #f)
      (set! (-> obj rec 2 priority) SPOOL_PRIORITY_LOWEST)
      (set! (-> obj rec 2 owner) (the-as handle #f))
      )
     )
    )
   (else
    (dotimes (v1-19 3)
     (set! (-> obj rec v1-19 type) spool-anim)
     (set! (-> obj rec v1-19 name) #f)
     (set! (-> obj rec v1-19 priority) SPOOL_PRIORITY_LOWEST)
     (set! (-> obj rec v1-19 owner) (the-as handle #f))
     )
    (set! (-> obj preload-stream type) spool-anim)
    (set! (-> obj preload-stream name) #f)
    (set! (-> obj preload-stream priority) SPOOL_PRIORITY_LOWEST)
    (set! (-> obj preload-stream owner) (the-as handle #f))
    )
   )
  0
  )

(defmacro spool-calc-priority (priority proc)
  "Check the priority of a spool anim and recalculate it if needed. It will be the same as distance between target and the requesting process.
   priority = var that stores priority
   proc = a process to recalc from"
  `(when (and (= ,priority SPOOL_PRIORITY_RECALC) ,proc)
    (let ((target-trans (target-pos 0)))
      (set! ,priority (vector-vector-distance target-trans (-> (the-as process-drawable ,proc) root trans)))
      )
    )
  )

(defmethod try-preload-stream external-art-control ((obj external-art-control) (arg0 string) (arg1 int) (arg2 process) (arg3 float))
  "Set a new stream to be preloaded, if appropriate."

  (spool-calc-priority arg3 arg2)

  (unless (and (-> obj preload-stream name)
               (>= arg3 (-> obj preload-stream priority))
               )
   (set! (-> obj preload-stream name) arg0)
   (set! (-> obj preload-stream parts) arg1)
   (set! (-> obj preload-stream priority) arg3)
   (set! (-> obj preload-stream owner) (process->handle arg2))
   )
  0
  )

(defmethod spool-push external-art-control ((obj external-art-control) (name string) (part int) (proc process) (priority float))
  "Push a spool-anim to the spool array. There are only space for three, and only the three highest priority spool anims will be kept. (lowest priority = top)"

  (spool-calc-priority priority proc)

  ;; if this spool-anim already exists, pop it from the rec list
  (cond
   ((and (= part (-> obj rec 0 parts)) (name= name (-> obj rec 0 name)))
    (if (>= priority (-> obj rec 0 priority))
     (return (the-as int #f))
     )
    ;; first spool. copy 1st <- 2nd and 2nd <- 3rd, 3rd will be wiped
    (mem-copy! (&-> obj rec 0 type) (&-> obj rec 1 type) (size-of spool-anim))
    (mem-copy! (&-> obj rec 1 type) (&-> obj rec 2 type) (size-of spool-anim))
    (set! (-> obj rec 2 name) #f)
    (set! (-> obj rec 2 owner) (the-as handle #f))
    )
   ((and (= part (-> obj rec 1 parts)) (name= name (-> obj rec 1 name)))
    (if (>= priority (-> obj rec 1 priority))
     (return (the-as int #f))
     )
    ;; second spool. copy 2nd <- 3rd, 3rd will be wiped
    (mem-copy! (&-> obj rec 1 type) (&-> obj rec 2 type) (size-of spool-anim))
    (set! (-> obj rec 2 name) #f)
    (set! (-> obj rec 2 owner) (the-as handle #f))
    )
   ((and (= part (-> obj rec 2 parts)) (name= name (-> obj rec 2 name)))
    (if (>= priority (-> obj rec 2 priority))
     (return (the-as int #f))
     )
    ;; third spool. 3rd will be wiped
    (set! (-> obj rec 2 name) #f)
    (set! (-> obj rec 2 owner) (the-as handle #f))
    )
   )
  
  ;; if it's top 3 priority, push this spool-anim to the rec list
  (cond
   ((< priority (-> obj rec 0 priority))
    ;; 1st place!
    (mem-copy! (&-> obj rec 2 type) (&-> obj rec 1 type) (size-of spool-anim))
    (mem-copy! (&-> obj rec 1 type) (&-> obj rec 0 type) (size-of spool-anim))
    (set! (-> obj rec 0 name) name)
    (set! (-> obj rec 0 parts) part)
    (set! (-> obj rec 0 priority) priority)
    (set! (-> obj rec 0 owner) (process->handle proc))
    )
   ((< priority (-> obj rec 1 priority))
    ;; 2nd place.
    (mem-copy! (&-> obj rec 2 type) (&-> obj rec 1 type) (size-of spool-anim))
    (set! (-> obj rec 1 name) name)
    (set! (-> obj rec 1 parts) part)
    (set! (-> obj rec 1 priority) priority)
    (set! (-> obj rec 1 owner) (process->handle proc))
    )
   ((< priority (-> obj rec 2 priority))
    ;; 3rd place...
    (set! (-> obj rec 2 name) name)
    (set! (-> obj rec 2 parts) part)
    (set! (-> obj rec 2 priority) priority)
    (set! (-> obj rec 2 owner) (process->handle proc))
    )
   )
  0
  )

(defun-extern level-hint-surpress! none) ;; ? TODO
(define-extern ja-channel-push! (function int int int :behavior process-drawable))
(define-extern ja-channel-set! (function int int :behavior process-drawable))
(define-extern joint-control-channel-group-eval! (function joint-control-channel art-joint-anim (function joint-control-channel float float float) int))
(define-extern joint-control-channel-group! (function joint-control-channel art-joint-anim (function joint-control-channel float float float) int))
(define-extern ja-aframe-num (function int float :behavior process-drawable))

;; this function is modified to work without sound.
(define *str-pos-hack* 0)
(define *str-play-speed* 17)
(define-extern ja-abort-spooled-anim (function spool-anim art-joint-anim int int :behavior process-drawable))
(defbehavior ja-play-spooled-anim process-drawable ((arg0 spool-anim) (arg1 art-joint-anim) (arg2 art-joint-anim) (arg3 (function process-drawable symbol)))
  (local-vars
    (v0-39 int)
    (spool-part int)
    (sv-24 float)
    (old-skel-status janim-status)
    (sv-32 int)
    (sv-40 int)
    (sv-48 int)
    (sv-56 int)
    (spool-sound sound-id)
    (sv-72 int)
    )
  (set! *str-pos-hack* 0)
  (set! spool-part 0)
  (set! sv-24 -17.0)
  (set! old-skel-status (-> self skel status))
  (set! sv-32 -2)
  (set! sv-40 0)
  (set! sv-48 0)
  (set! sv-56 0)
  (set! spool-sound (new-sound-id))
  (backup-load-state-and-set-cmds *load-state* (-> arg0 command-list))
  (set-setting! *setting-control* self 'spooling (the-as symbol (process->ppointer self)) 0.0 0)
  (logior! (-> self skel status) (janim-status inited drawn done))
  (kill-current-level-hint '() '() 'die)
  (level-hint-surpress!)
  (copy-settings-from-target! *setting-control*)
  (when (or (handle->process (-> *art-control* spool-lock)) (!= *master-mode* 'game))
    (cond
      (arg1
        (when (!= (if (> (-> self skel active-channels) 0)
                      (-> self skel root-channel 0 frame-group)
                      )
                  arg1
                  )
          (ja-channel-push! 1 15)
          (let ((s2-0 (-> self skel root-channel 0)))
            (joint-control-channel-group-eval! s2-0 arg1 num-func-identity)
            (set! (-> s2-0 frame-num) 0.0)
            )
          )
        )
      (else
        (ja-channel-set! 0)
        )
      )
    (while (or (handle->process (-> *art-control* spool-lock)) (!= *master-mode* 'game))
      (format #t "WARNING: ---------------------> loader stall on lock~%")
      (if (arg3 self)
          (goto cfg-88)
          )
      (spool-push *art-control* (-> arg0 name) spool-part self -9.0)
      (suspend)
      (when arg1
        (let ((a0-17 (-> self skel root-channel 0)))
          (set! (-> a0-17 param 0) 1.0)
          (joint-control-channel-group-eval! a0-17 (the-as art-joint-anim #f) num-func-loop!)
          )
        )
      )
    )
  (let ((v1-46 (process->ppointer self)))
    (set! (-> *art-control* spool-lock)
          (new 'static 'handle :process v1-46 :pid (-> (the-as process (-> v1-46 0)) pid))
          )
    )
  (set! sv-48 (-> *display* base-frame-counter))
  (while (< spool-part (-> arg0 parts))
    (spool-push *art-control* (-> arg0 name) spool-part self -20.0)
    (update *art-control* #f)
    (spool-push *art-control* (-> arg0 name) spool-part self -20.0)
    (when (!= (file-status *art-control* (-> arg0 name) spool-part) 'active)
      (cond
        (arg1
          (when (!= (if (> (-> self skel active-channels) 0)
                        (-> self skel root-channel 0 frame-group)
                        )
                    arg1
                    )
            (ja-channel-set! 1)
            (let ((s2-2 (-> self skel root-channel 0)))
              (joint-control-channel-group-eval! s2-2 arg1 num-func-identity)
              (set! (-> s2-2 frame-num) 0.0)
              )
            )
          )
        (else
          (ja-channel-set! 0)
          )
        )
      (while (!= (file-status *art-control* (-> arg0 name) spool-part) 'active)
        (if (arg3 self)
            (goto cfg-88)
            )
        (spool-push *art-control* (-> arg0 name) spool-part self -20.0)
        (format #t "WARNING: ---------------------> loader stall on art ~S ~D~%" (-> arg0 name) spool-part)
        (suspend)
        (when arg1
          (let ((a0-37 (-> self skel root-channel 0)))
            (set! (-> a0-37 param 0) 1.0)
            (joint-control-channel-group-eval! a0-37 (the-as art-joint-anim #f) num-func-loop!)
            )
          )
        )
      )
    (spool-push *art-control* (-> arg0 name) spool-part self -20.0)
    (let ((s2-4 (the-as art-joint-anim (lookup-art (-> self draw art-group) (-> arg0 name) art-joint-anim))))
      (cond
        (s2-4
          (ja-channel-set! 1)
          (let ((a0-42 (-> self skel root-channel 0)))
            (set! (-> a0-42 frame-group) s2-4)
            (set! (-> a0-42 param 0) (the float (+ (-> s2-4 data 0 length) -1)))
            (set! (-> a0-42 param 1) 1.0)
            (set! (-> a0-42 frame-num) 0.0)
            (joint-control-channel-group! a0-42 s2-4 num-func-seek!)
            )
          (when (zero? spool-part)
            (str-play-async (-> arg0 name) spool-sound)
            ;; hack!
            ;;(set! *str-pos-hack* 0)
            ;;
            (set! (-> *art-control* active-stream) (-> arg0 name))
            )
          (let* ((f30-0 (* 0.05859375 (-> s2-4 speed)))
                 (f28-0 (+ sv-24 (/ (the float (+ (-> s2-4 data 0 length) -1)) f30-0)))
                 )
            ;;(set! sv-72 (current-str-pos spool-sound))
            (set! sv-72 *str-pos-hack*)
            
            
            (set! sv-40 (-> *display* base-frame-counter))
            (until (>= (the float v0-39) f28-0)
              (+! *str-pos-hack* *str-play-speed*)
              (if (= (-> self skel root-channel 0) (-> self skel channel))
                  (logior! (-> self skel status) (janim-status spool))
                  )
              (if (or (arg3 self)
                      (and (<= sv-72 0) (>= (- (-> *display* base-frame-counter) sv-40) 1200))
                      (and (< 300 sv-56) (<= sv-72 0))
                      )
                  (goto cfg-88)
                  )
              (spool-push *art-control* (-> arg0 name) spool-part self -20.0)
              (if (< (+ spool-part 1) (-> arg0 parts))
                  (spool-push *art-control* (-> arg0 name) (+ spool-part 1) self -10.0)
                  (logclear! (-> self skel status) (janim-status done))
                  )
              (execute-commands-up-to *load-state* (ja-aframe-num 0))
              (cond
                ((and (< sv-32 sv-72) #|(= (current-str-id) spool-sound)|#)
                 (set! sv-56 (+ sv-56 (- (-> *display* base-frame-counter) (-> *display* old-base-frame-counter))))
                 (set! sv-40 (-> *display* base-frame-counter))
                 )
                (else
                  0
                  )
                )
              (set! sv-32 sv-72)
              (set! sv-48 (-> *display* base-frame-counter))
              (suspend)
              (let ((f0-14 (* (- (the float *str-pos-hack* #|(current-str-pos spool-sound)|#) sv-24) f30-0))
                    (a0-69 (-> self skel root-channel 0))
                    )
                (set! (-> a0-69 param 0) (the float (+ (-> a0-69 frame-group data 0 length) -1)))
                (set! (-> a0-69 param 1) 1.0)
                (set! (-> a0-69 frame-num) f0-14)
                (joint-control-channel-group! a0-69 (the-as art-joint-anim #f) num-func-seek!)
                )
              (set! v0-39 *str-pos-hack* #|(current-str-pos spool-sound)|#)
              (set! sv-72 v0-39)
              )
            (set! sv-24 f28-0)
            )
          (logclear! (-> self skel status) (janim-status spool))
          )
        (else
          (format 0 "ERROR: <asg> ~A in spool anim loop for ~A ~D, but not loaded.~" self (-> arg0 name) spool-part)
          (goto cfg-88)
          )
        )
      )
    (set! spool-part (+ spool-part 1))
    )
  (set! spool-part (+ spool-part -1))
  (label cfg-88)
  (ja-abort-spooled-anim arg0 arg2 spool-part)
  0
  )

(defbehavior ja-abort-spooled-anim process-drawable ((arg0 spool-anim) (arg1 art-joint-anim) (arg2 int))
  "Abort a spooled animation."

  (restore-load-state-and-cleanup *load-state*)
  (str-play-stop (-> arg0 name))
  (set! (-> *art-control* active-stream) #f)
  (logclear! (-> self skel status) (janim-status drawn done))
  (if (zero? (logand (-> self skel status) (janim-status inited)))
    (logclear! (-> self skel status) (janim-status inited))
    )
  (clear-pending-settings-from-process *setting-control* self 'spooling)
  (cond
   ((and arg1 (>= arg2 0))
    (ja-channel-push! 1 30)
    (set! (-> self skel root-channel 0 frame-group) arg1)
    (while (!= (-> self skel root-channel 0) (-> self skel channel))
      (spool-push *art-control* (-> arg0 name) arg2 self -20.0)
      (suspend)
      ;; TODO macro
      (let ((a0-12 (-> self skel root-channel 0)))
       (set! (-> a0-12 param 0) (the float (+ (-> a0-12 frame-group data 0 length) -1)))
       (set! (-> a0-12 param 1) 1.0)
       (joint-control-channel-group-eval! a0-12 (the-as art-joint-anim #f) num-func-seek!)
       )
      )
    )
   (else
    (ja-channel-set! 0)
    )
   )
  (set! (-> *art-control* spool-lock) (the-as handle #f))
  0
  )

(if (zero? *art-control*)
  (set! *art-control* (new 'global 'external-art-control))
  )