mirror of
https://github.com/a2-4am/4cade.git
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216 lines
7.6 KiB
Plaintext
216 lines
7.6 KiB
Plaintext
;license:MIT
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;(c) 2018-9 by 4am
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;
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; Attract Mode - cycle through slideshows and self-running demos
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;
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; Public functions
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; - MegaAttractMode
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; - MiniAttractMode
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; - RunAttractModule
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;------------------------------------------------------------------------------
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; MegaAttractMode
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; main entry point for Mega Attract Mode, which endlessly cycles through
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; modules listed in ATTRACT.CONF to display title pages, action screenshots,
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; super hi-res box art (on supporting platforms), and self-running game demos
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;
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; in: gGlobalPrefsStore must be initialized
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; out: never returns to caller (may JMP to other major modes)
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;------------------------------------------------------------------------------
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MegaAttractMode
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jsr SwitchToBank1
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ldx #$FF
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txs
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jsr BlankHGR ; switch to HGR page 1 (once cleared)
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jsr LoadFile ; load attract-mode configuration file into $8000
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!word kRootDirectory
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!word kAttractModeConfFile
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- !word $8000
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jsr ParseKeyValueList ; parse attract-mode configuration into OKVS data structure at $6000
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!word gAttractModeStore
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!word -
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!byte 0
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jsr pref_get ; get attract mode module from prefs
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!word kNextAttract
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!word gAttractModeStore
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+STAY @mname ; A/Y = module name
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; X = index of module in attract store
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+LDADDR gAttractModeStore
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jsr okvs_next ; get module after this one
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+STAY +
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jsr pref_set ; update prefs store and save to disk
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!word kNextAttract
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+ !word $FDFD ; SMC
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jsr okvs_get
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!word gAttractModeStore
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@mname !word $FDFD ; SMC
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+STAY PTR
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ldy #1
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lda (PTR),y
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tax ; X = module type
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+LDAY @mname ; A/Y = address of module name
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jsr RunAttractModule
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lda KBD
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bpl MegaAttractMode
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cmp #$8D ; Enter plays the game shown on screen.
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bne + ; Any other key switches to Search Mode.
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jsr PlayGame ; (might return if user hits Ctrl-Reset)
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+ jmp SearchMode
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;------------------------------------------------------------------------------
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; MiniAttractMode
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; run attract modules related to one game
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;
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; in: gGameToLaunch = index in gGamesListStore
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; out: all flags and registers clobbered
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; assume all of main memory has been clobbered
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;------------------------------------------------------------------------------
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MiniAttractMode
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jsr GetGameToLaunch
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+STAY +
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jsr BlankHGR
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; X = 0
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stx @MiniAttractIndex
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@loop
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jsr LoadFile ; load mini attract mode configuration file into $8000
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!word kMiniAttractDirectory
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+ !word $FDFD ; SMC
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- !word $8000
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jsr ParseKeyValueList ; parse configuration into OKVS data structure at $6000
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!word gAttractModeStore
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!word -
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!byte 0
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+LDADDR gAttractModeStore
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jsr okvs_len
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cmp @MiniAttractIndex
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beq ATTRTS ; we've run through all modules, so exit to caller
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@MiniAttractIndex=*+1
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ldx #$FD ; SMC
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+LDADDR gAttractModeStore
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jsr okvs_nth ; get the next module on the list
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+STAY SAVE
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jsr okvs_get_current ; get module type
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ldy #1
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lda (PTR),y
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tax ; X = module type
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+LDAY SAVE ; A/Y = address of module name
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jsr RunAttractModule ; execute the module
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inc @MiniAttractIndex
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lda KBD
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bpl @loop
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ATTRTS rts
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;------------------------------------------------------------------------------
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; RunAttractModule
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; run a single attract module of any type and return to caller
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;
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; in: X = module type as ASCII char (1-6,A-C, see attract.conf)
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; A/Y = address of module name
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; for demos, this is the filename of an executable in /demo/
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; for slideshows, this is the filename of a .conf file in /ss/
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; for singles, this is a pathname of the graphic to load
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; gGlobalPrefsStore must be initialized (if we load a transition effect
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; of any kind, we will update the global prefs with the next one)
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; out: all flags and registers clobbered
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; assume all of main memory has been clobbered
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;------------------------------------------------------------------------------
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RunAttractModule
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+STAY @key
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+STAY @key2
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cpx #$30
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bne @NotDemo
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; Self-running demos are loaded into main memory and executed.
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; Each binary has been patched to quit on any key and jump back
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; to the |Reenter| entry point.
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; All demos are strictly 48K / main memory. No demo uses the
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; language card or auxiliary memory.
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+LDAY @key
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jsr GetGameInfo
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bcs ATTRTS ; if game doesn't exist, skip the demo
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cpx #$FF
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beq +
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stx gGameToLaunch
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+
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jsr ClearScreens ; avoid seeing code load into the HGR page
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; (clobbers $106, must do now before loading prelaunch code)
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jsr LoadFile ; load standard prelaunch code (|Launch| will call it)
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!word kPrelaunchDirectory
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!word kStandardPrelaunch
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!word $0106
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jsr LoadFile ; load self-running demo into its default address (varies)
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!word kDemoDirectory
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@key !word $FDFD
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!word 0
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jmp Launch ; will return to caller via |Reenter|
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; not a demo, so maybe a slideshow or single screenshot
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@NotDemo
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txa
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cmp #$41 ; numbers are slideshow modules,
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bcs @dispatchSingle ; letters are single files
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; it's a slideshow, so load and parse slideshow configuration file
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pha ; save module type
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jsr LoadFile ; load slideshow configuration file into $4000
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!word kAttractModeSlideshowDirectory
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@key2 !word $FDFD ; SMC
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- !word $4000
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jsr ParseKeyValueList ; parse into an OKVS data structure at $0800
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!word gSlideshowStore
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!word -
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!byte 0
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pla ; restore module type
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- and #$0F ; convert ASCII digit to int
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tax
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lda @slideshowslo-1,x
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sta @jmp+1
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lda @slideshowshi-1,x
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sta @jmp+2
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+LDAY @key ; pass in module name
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@jmp jmp $FDFD ; SMC
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@dispatchSingle
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adc #(@singleslo-@slideshowslo)-1
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bne - ; always branches
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@slideshowslo
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!byte <HGRTitleSlideshow
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!byte <HGRActionSlideshow
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!byte <DHGRTitleSlideshow
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!byte <DHGRActionSlideshow
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!byte <SHRSlideshow
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!byte <GRActionSlideshow
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@singleslo
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!byte <HGRSingle
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!byte <DHGRSingle
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!byte <SHRSingle
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!byte <GRSingle
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@slideshowshi
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!byte >HGRTitleSlideshow
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!byte >HGRActionSlideshow
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!byte >DHGRTitleSlideshow
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!byte >DHGRActionSlideshow
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!byte >SHRSlideshow
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!byte >GRActionSlideshow
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@singleshi
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!byte >HGRSingle
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!byte >DHGRSingle
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!byte >SHRSingle
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!byte >GRSingle
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