4cade/src/ui.credits.a

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;license:MIT
;(c) 2018-9 by 4am
;
; credits page
;
; Public functions
; - Credits
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; - Help
;
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;------------------------------------------------------------------------------
; Credits
; display credits page and wait
;
; in: none
; out: C clear
; all other flags and registers clobbered
;------------------------------------------------------------------------------
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Credits
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jsr LoadFile ; load credits text into $8000
!word kRootDirectory
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!word kCreditsFile
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!word $8000
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jsr ClearOffscreen
lda OffscreenPage
ror ; draw on offscreen page
+LDADDR $8000
jsr DrawPage ; draw credits
jsr ShowOtherPage ; show credits
jsr WaitForKeyFor30Seconds; wait
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-- bit CLEARKBD ; don't care about key
jsr ShowOtherPage ; back to previous page
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- clc ; if called from search mode, tell caller not to refresh
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rts
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;------------------------------------------------------------------------------
; Help
; display global help page and wait
;
; in: none
; out: if user presses an arrow key within 30 seconds, this exits via BrowseMode
; otherwise this returns to caller with
; C clear, all other flags and registers clobbered
;------------------------------------------------------------------------------
Help
jsr LoadHelpOffscreen
jsr ShowOtherPage
jsr WaitForKeyFor30Seconds
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cmp #$88
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beq BrowseMode
cmp #$83
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beq -
jsr IsUpDownOrRightArrow
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beq -
jsr IsSearchKey
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bne --
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rts