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

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

;; res is the very generic resource storage system. See res.gc for more information.

;; the res-tag describes some data
(deftype res-tag (uint128)
  ((name        symbol  :offset 0)       ;; name used for lookups
   (key-frame   float   :offset 32)      ;; if it has a time value associated with it
   (elt-type    type    :offset 64)      ;; the type of the data stored
   (data-offset uint16  :offset 96)      ;; offset to our data within our lump
   (elt-count   uint32  :offset 112 :size 15) ;; if we're an array
   (inlined?    uint8   :offset 127 :size 1)  ;; if our data is an inline array or not.
   )
  :flag-assert #x900000010
  )

;; the indices of two res tags. If the specific key-frame time is in between two
;; res-tags, this type is used to return the indices of the first res tag before and after
;; the specified time.
(deftype res-tag-pair (uint64)
  ((lo  int32 :offset 0)
   (hi  int32 :offset 32)
   )
  ;; made-up type
  )

;; a res-lump is a collection of res-tags and the associated data.
;; it's used as the base type for entities where the res stores various parameters.
(deftype res-lump (basic)
  ((length           int32              :offset-assert 4)
   (allocated-length int32              :offset-assert 8)
   (data-base        pointer            :offset-assert 12)
   (data-top         pointer            :offset-assert 16)
   (data-size        int32              :offset-assert 20)
   (extra            entity-links       :offset-assert 24)
   (tag              (pointer res-tag)  :offset-assert 28)
   )

  :method-count-assert 22
  :size-assert         #x20
  :flag-assert         #x1600000020
  ;; field extra is a basic loaded with a signed load
  (:methods
    (new (symbol type int int) _type_ 0)
    (get-property-data (_type_ symbol symbol float pointer (pointer res-tag) pointer) pointer :no-virtual 9)
    (get-property-struct (_type_ symbol symbol float structure (pointer res-tag) pointer) structure :no-virtual 10)
    (get-property-value (_type_ symbol symbol float uint128 (pointer res-tag) pointer) uint128 :no-virtual 11)
    (get-property-value-float (_type_ symbol symbol float float (pointer res-tag) pointer) float :no-virtual 12)
    (get-tag-index-data (_type_ int) pointer 13)
    (get-tag-data (_type_ res-tag) pointer 14)
    (allocate-data-memory-for-tag! (_type_ res-tag) res-tag 15)
    (sort! (_type_) _type_ 16)
    (add-data! (_type_ res-tag pointer) res-lump 17)
    (add-32bit-data! (_type_ res-tag object) res-lump 18)
    (lookup-tag-idx (_type_ symbol symbol float) res-tag-pair :no-virtual 19)
    (make-property-data (_type_ float res-tag-pair pointer) pointer 20)
    (get-curve-data! (_type_ curve symbol symbol float) symbol 21)
    )
  )

(define *res-key-string* (new 'global 'string 64 (the-as string #f))) ;; why 64?
(define-extern *res-static-buf* pointer)