mirror of
https://github.com/open-goal/jak-project
synced 2026-09-06 19:21:00 -04:00
Tyler Wilding
189 lines
7.5 KiB
Common Lisp
189 lines
7.5 KiB
Common Lisp
;;-*-Lisp-*-
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(in-package goal)
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(bundles "ENGINE.CGO" "GAME.CGO")
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(require "kernel/gkernel-h.gc")
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;; name: loader-h.gc
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;; name in dgo: loader-h
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;; dgos: GAME, ENGINE
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;; The loader is responsible for managing streaming loads.
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;; note: lower values are more important.
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;; negative values will preload.
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(defconstant SPOOL_PRIORITY_LOWEST 100000000.0)
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(defconstant SPOOL_PRIORITY_RECALC -99.0)
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(defconstant SPOOL_PRIORITY_HIGHEST -20.0)
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(defconstant SPOOL_PRIORITY_HIGH -10.0)
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(defconstant SPOOL_HEAP_SIZE (* 247 1024)) ;; size of the heap to be used for each spool
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;; DECOMP BEGINS
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;; A load-dir is a collection of references to loaded art.
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;; This type didn't have a normal inspect method, so these field names are made up.
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(declare-type art-group basic)
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(deftype load-dir (basic)
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((lev level)
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(string-array (array string)) ;; these are the names
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(data-array (array basic)) ;; this is the file data.
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)
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(:methods
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(new (symbol type int level) _type_)
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(load-to-heap-by-name (_type_ string symbol kheap int) art-group)
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(set-loaded-art (_type_ art-group) art-group)))
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;; specialization of load-dir where the data-array holds art-groups.
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(deftype load-dir-art-group (load-dir)
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((art-group-array (array art-group) :overlay-at data-array))
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(:methods
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(new (symbol type int level) _type_)))
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(defmethod new load-dir ((allocation symbol) (type-to-make type) (length int) (lev level))
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"Allocate a new load-dir with room for length entries"
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(let ((this (object-new allocation type-to-make (the-as int (-> type-to-make size)))))
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(set! (-> this lev) lev)
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;; create the name array
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(set! (-> this string-array) (the-as (array string) ((method-of-type array new) allocation array string length)))
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(set! (-> this string-array length) 0)
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;; create the data array
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(set! (-> this data-array) (the-as (array art-group) ((method-of-type array new) allocation array basic length)))
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(set! (-> this data-array length) 0)
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this))
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(defmethod new load-dir-art-group ((allocation symbol) (type-to-make type) (length int) (lev level))
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"Allocate a new load-dir with room for length art-groups"
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;; call parent ctor.
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(let ((this ((method-of-type load-dir new) allocation type-to-make length lev)))
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;; override the content type
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(set! (-> this data-array content-type) art-group)
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;; and cast to child.
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(the-as load-dir-art-group this)))
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;; An external-art-buffer owns some memory for loading files.
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;; the "external" means it's not part of the level's (or common, always loaded) static data
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;; status:
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;; - 'active: file is loaded and art group is linked to level's art group.
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;; - 'reserved: buffer is reserved for other purpose
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;; - 'error: load has encountered an error, goes to 'inactive
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;; - 'inactive: not in use
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;; - 'loading: loading is in progress
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;; - 'loaded: loading has finished, goes to 'locked or 'active
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;; - 'locked: loaded, but another buffer is active and blocks this one.
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;; Note: a locked buffer has loaded/linked the file, but hasn't linked the file
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;; to the "master" art group, located in the level.
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(deftype external-art-buffer (basic)
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((index int32)
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(other external-art-buffer)
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(status symbol)
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(locked? symbol)
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(frame-lock symbol)
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(heap kheap :inline)
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(pending-load-file string)
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(pending-load-file-part int32)
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(pending-load-file-owner handle)
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(pending-load-file-priority float)
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(load-file string)
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(load-file-part int32)
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(load-file-owner handle)
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(load-file-priority float)
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(buf pointer)
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(len int32)
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(art-group art-group))
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(:methods
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(new (symbol type int) _type_)
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(set-pending-file (_type_ string int handle float) int)
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(update (_type_) int)
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(inactive? (_type_) symbol)
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(file-status (_type_ string int) symbol)
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(link-file (_type_ art-group) art-group)
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(unlink-file (_type_ art-group) int)
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(unlock! (_type_) symbol)))
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(defmethod new external-art-buffer ((allocation symbol) (type-to-make type) (idx int))
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"Allocate a new external-art-buffer"
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(let ((this (object-new allocation type-to-make (the-as int (-> type-to-make size)))))
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(set! (-> this index) idx)
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(set! (-> this load-file) #f)
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(set! (-> this load-file-part) -1)
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(set! (-> this load-file-owner) (the-as handle #f))
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(set! (-> this load-file-priority) SPOOL_PRIORITY_LOWEST)
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(set! (-> this pending-load-file) #f)
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(set! (-> this pending-load-file-part) -1)
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(set! (-> this pending-load-file-owner) (the-as handle #f))
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(set! (-> this pending-load-file-priority) SPOOL_PRIORITY_LOWEST)
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(set! (-> this art-group) #f)
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(set! (-> this status) 'initialize)
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(set! (-> this locked?) #f)
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(set! (-> this other) #f)
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this))
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;; A spool-anim tracks the buffers holding chunks of a spooled animation.
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(deftype spool-anim (basic)
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((name string :offset 16)
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(buf1 external-art-buffer :overlay-at name)
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(index int32 :offset 20)
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(buf2 external-art-buffer :overlay-at index)
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(parts int32)
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(priority float)
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(owner handle)
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(command-list pair))
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:pack-me)
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;; This is the main controller for the streaming loader.
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;; It has two buffers for holding chunks of a spooling animation
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;; The buffer can also be reused to hold other things.
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(deftype external-art-control (basic)
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((buffer external-art-buffer 2)
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(rec spool-anim 3 :inline)
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(spool-lock handle)
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(reserve-buffer external-art-buffer)
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(reserve-buffer-count int32)
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(active-stream string)
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(preload-stream spool-anim :inline)
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(last-preload-stream spool-anim :inline)
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(end-pad uint32))
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(:methods
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(new (symbol type) _type_)
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(update (_type_ symbol) int)
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(clear-rec (_type_) int)
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(spool-push (_type_ string int process float) int)
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(file-status (_type_ string int) symbol)
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(reserve-alloc (_type_) kheap)
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(reserve-free (_type_ kheap) int)
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(none-reserved? (_type_) symbol)
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(try-preload-stream (_type_ string int process float) int)))
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(defmethod new external-art-control ((allocation symbol) (type-to-make type))
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(let ((this (object-new allocation type-to-make (the-as int (-> type-to-make size)))))
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;; allocate buffers.
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(dotimes (buff-idx 2)
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(set! (-> this buffer buff-idx) ((method-of-type external-art-buffer new) allocation external-art-buffer buff-idx)))
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;; point buffers to each other
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(set! (-> this buffer 0 other) (-> this buffer 1))
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(set! (-> this buffer 1 other) (-> this buffer 0))
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;; set up recs
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(dotimes (rec-idx 3)
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(set! (-> this rec rec-idx name) #f)
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(set! (-> this rec rec-idx priority) SPOOL_PRIORITY_LOWEST)
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(set! (-> this rec rec-idx owner) (the-as handle #f)))
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;; set up defaults.
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(set! (-> this spool-lock) (the-as handle #f))
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(set! (-> this reserve-buffer) #f)
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(set! (-> this active-stream) #f)
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(set! (-> this preload-stream name) #f)
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(set! (-> this preload-stream priority) SPOOL_PRIORITY_LOWEST)
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(set! (-> this preload-stream owner) (the-as handle #f))
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(set! (-> this last-preload-stream name) #f)
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(set! (-> this last-preload-stream priority) SPOOL_PRIORITY_LOWEST)
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(set! (-> this last-preload-stream owner) (the-as handle #f))
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this))
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(define-extern *art-control* external-art-control)
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(defun-extern art-group-load-check string kheap int art-group)
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