4cade/src/prodos.path.a

;license:MIT
;(c) 2018-2021 by 4am
;
; ProDOS - functions for constructing and passing around ProDOS pathnames
;
; Public functions
; - SetPath
; - AddToPath
;

;------------------------------------------------------------------------------
; SetPath/AddToPath
; append a length-prefixed string to gPathname
; SetPath will reset the path first
;
; in:    A contains low byte of address of length-prefixed string to append
;        Y contains high byte of address of length-prefixed string to append
; out:   all registers and flags clobbered
;        $02/$03 (PTR/PTR+1) clobbered
;        gPathname updated with concatenated length-prefixed string
;------------------------------------------------------------------------------
SetPath
kRootDirectory=*+1
         ldx   #0
         stx   gPathname
         ; execution falls through here
!if RELBASE != $2000 {
  !ifdef PASS2 {
  } else { ;PASS2
    !if * != iAddToPath {
      !error "iAddToPath=",*, ", fix constants.a, rebuild prelaunch"
    }
  }
}
AddToPath
         +ST16 PTR
         ldy   #0
         lda   (PTR),y               ; length of this segment
         beq   @done
         tay
         iny
         sty   @max
         ldx   gPathname             ; current pathname length
         ldy   #$01
-        lda   (PTR),y
         sta   gPathname+1,x
         inx
         iny
@max = *+1
         cpy   #$D1                  ; SMC
         bcc   -
         stx   gPathname
@done
         rts

kTotalDataFile
         !byte 10
         !raw  "TOTAL.DATA"

kTotalIndexFile
         !byte 9
         !raw  "TOTAL.IDX"

kHGRTitleDirectory
         !byte 10
         !raw  "TITLE.HGR/"

kDHGRTitleDirectory
         !byte 11
         !raw  "TITLE.DHGR/"

kAnimatedTitleDirectory
         !byte 15
         !raw  "TITLE.ANIMATED/"

kHGRActionIndexFile
         !byte 8
         !raw  "HGR"
gHGRActionIndexNumber
         !raw  "_"
         !raw  ".IDX"

kDHGRActionIndexRecord
         !source "src/index/dhgr.idx.a"

kGRActionIndexRecord
         !source "src/index/gr.idx.a"

kDemoDirectory
         !byte 5
         !raw  "DEMO/"

kGameDirectory
         !byte 2
         !raw  "X/"
kGameDirectoryLen = 3 ; we need this elsewhere

kFXDirectory
         !byte 3
         !raw  "FX/"

kPrelaunchIndexRecord
         !source "src/index/prelaunch.idx.a"

kGlobalPrefsFilename
         !byte 10
         !raw  "PREFS.CONF"

kAttractModeIndexRecord
         !source "src/index/attract.idx.a"

kMiniAttractIndexRecord
         !source "src/index/miniattract.idx.a"

kAttractModeSlideshowIndexRecord
         !source "src/index/slideshow.idx.a"

kFXIndexRecord
         !source "src/index/fx.idx.a"

kDFXIndexRecord
         !source "src/index/dfx.idx.a"

kGameHelpIndexRecord
         !source "src/index/gamehelp.idx.a"

kSHRArtworkIndexRecord
         !source "src/index/artwork.idx.a"

kCreditsFile
         !byte 7
         !raw  "CREDITS"

kHelpBackgroundFile
         !byte 4
         !raw  "HELP"

kHelpTextFile
         !byte 8
         !raw  "HELPTEXT"

kTitleFile
         !byte 5
         !raw  "TITLE"

kCoverFile
         !byte 5
         !raw  "COVER"

kCoverFadeFile
         !byte 9
         !raw  "COVERFADE"

kGRFizzleFile
         !byte 9
         !raw  "GR.FIZZLE"

kSFXFizzleFile
         !byte 10
         !raw  "SHR.FIZZLE"

kDecrunchFile
         !byte 8
         !raw  "DECRUNCH"

kJoystickFile
         !byte 8
         !raw  "JOYSTICK"

kSearchIndexFile
         !byte 12
         !raw  "SEARCH"
gSearchHasJoystick
         !raw  "_"
gSearchHas128K
         !raw  "_"
         !raw  ".IDX"

kSearchCacheFile
         !byte 11
         !raw  "CACHE"
gCacheHasJoystick
         !raw  "_"
gCacheHas128K
         !raw  "_"
         !raw  ".IDX"