mirror of
https://github.com/a2-4am/4cade.git
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178 lines
5.0 KiB
Plaintext
178 lines
5.0 KiB
Plaintext
;license:MIT
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;(c) 2018-9 by 4am
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;
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; Browse Mode - main UI
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;
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; Public functions
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; - BrowseMode
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;
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;------------------------------------------------------------------------------
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; BrowseMode
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; main entry point for Browse Mode, which allows the user to browse the game
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; catalog in alphabetical order and launch games
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;
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; in: none
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; out: never returns to caller (may JMP to other major modes)
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;------------------------------------------------------------------------------
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BrowseMode
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ldx #$FF
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txs
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@BrowseModeInputLoop
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jsr WaitForKeyFor30Seconds
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bit CLEARKBD
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; indices into BrowseDispatchTable below
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kBrowseSearch = 0
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kBrowsePrevious = 1
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kBrowseNext = 2
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kBrowseExitToSearch = 3
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kBrowseTab = 4
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kBrowseLaunch = 5
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kBrowseHelp = 6
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kBrowseCredits = 7
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kBrowseCheat = 8
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kSoftBell = 9
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ldy #kNumBrowseKeys
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- dey
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bmi @noKeyMatch
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cmp BrowseKeys,y
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bne -
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ldx BrowseKeyDispatch,y
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bne @BrowseDispatch ; always branches
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@noKeyMatch
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jsr IsSearchKey
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beq +
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ldx #kSoftBell ; beep on invalid input
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!if kBrowseSearch > 0 {
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+HIDE_NEXT_2_BYTES
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+
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ldx #kBrowseSearch
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} else {
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+
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}
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; execution falls through here
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@BrowseDispatch
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ldy BrowseDispatchTableLo,x
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sty @j+1
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ldy BrowseDispatchTableHi,x
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sty @j+2
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@j jsr $FDFD ; SMC
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jmp @BrowseModeInputLoop
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OnBrowseSearch
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sta InputBuffer
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lda #$01
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sta InputLength
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jmp SearchMode
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OnBrowsePrevious
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ldx gGameToLaunch
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inx ; Slightly pathological case: there may be no
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; current game by the time we get here, e.g.
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; if we entered browse mode by pressing left
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; or up arrow from the global help screen.
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; In this case, pretend we were at game 0 and
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; continue with the key handler logic.
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beq +
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dex
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bne .decindex
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+ ldx GameCount
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.decindex
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dex
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.setindex
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stx gGameToLaunch
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jmp OnBrowseChanged
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OnBrowseNext
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ldx gGameToLaunch
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inx
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GameCount = *+1
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cpx #$D1 ; SMC
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bne .setindex
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ldx #0
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beq .setindex ; branch always
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OnBrowseLaunch
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jsr PlayGame
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jsr BlankHGR
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jmp ForceBrowseChanged
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OnBrowseCheat
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jsr ToggleCheat
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beq ForceBrowseChanged ; always branches because Z=1 on exit from ToggleCheat
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OnBrowseTab
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jsr MiniAttractMode
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cmp #$8D
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beq OnBrowseLaunch
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; execution falls through here
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ForceBrowseChanged
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bit CLEARKBD
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; execution falls through here
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OnBrowseChanged
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; in: gGameToLaunch = game index
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jsr SwitchToBank2
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jsr EnableAcceleratorAndSwitchToBank1
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jsr LoadGameTitleOffscreen
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jsr DrawUIWithoutDots
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jmp MaybeAnimateTitle
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;------------------------------------------------------------------------------
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BrowseDispatchTableLo
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!byte <OnBrowseSearch
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!byte <OnBrowsePrevious
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!byte <OnBrowseNext
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!byte <SearchMode
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!byte <OnBrowseTab
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!byte <OnBrowseLaunch
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!byte <Help
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!byte <Credits
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!byte <OnBrowseCheat
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!byte <SoftBell
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BrowseDispatchTableHi
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!byte >OnBrowseSearch
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!byte >OnBrowsePrevious
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!byte >OnBrowseNext
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!byte >SearchMode
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!byte >OnBrowseTab
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!byte >OnBrowseLaunch
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!byte >Help
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!byte >Credits
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!byte >OnBrowseCheat
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!byte >SoftBell
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kNumBrowseKeys = 12 ; number of entries in next 2 tables (each)
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BrowseKeys
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!byte $83 ; Ctrl-C = toggle cheat mode
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!byte $A6 ; '&' = credits
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!byte $AF ; '/' = help
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!byte $BF ; '?' = help
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!byte $A0 ; Space = mini attract mode
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!byte $89 ; TAB = mini attract mode
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!byte $8D ; ENTER = launch current game
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!byte $9B ; Esc = switch to search mode
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!byte $8A ; down arrow = next
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!byte $95 ; right arrow = next
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!byte $8B ; up arrow = previous
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!byte $88 ; left arrow = previous
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BrowseKeyDispatch
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!byte kBrowseCheat
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!byte kBrowseCredits
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!byte kBrowseHelp
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!byte kBrowseHelp
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!byte kBrowseTab
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!byte kBrowseTab
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!byte kBrowseLaunch
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!byte kBrowseExitToSearch
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!byte kBrowseNext
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!byte kBrowseNext
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!byte kBrowsePrevious
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!byte kBrowsePrevious
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