mirror of
https://github.com/a2-4am/4cade.git
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70 lines
2.1 KiB
Plaintext
70 lines
2.1 KiB
Plaintext
;license:MIT
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;(c) 2018-2020 by 4am
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;
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; credits page
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;
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; Public functions
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; - Credits
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; - Help
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;
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;------------------------------------------------------------------------------
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; Credits
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; display credits page and wait
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;
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; in: none
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; out: C clear
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; all other flags and registers clobbered
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;------------------------------------------------------------------------------
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Credits
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jsr LoadFile ; load credits text into $8000
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!word kRootDirectory
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!word kCreditsFile
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!word $8000
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jsr ForceHGRMode
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jsr ClearOffscreen
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lda OffscreenPage
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ror ; draw on offscreen page
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+LDADDR $8000
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tax
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jsr DrawPage ; draw credits
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jsr ShowOtherPage ; show credits
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jsr WaitForKeyFor30Seconds; wait
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-- bit CLEARKBD ; don't care about key
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- sec ; if called from search mode, tell caller to refresh
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rts
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;------------------------------------------------------------------------------
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; Help
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; display global help page and wait
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;
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; in: none
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; out: if user presses an arrow key within 30 seconds, this exits via BrowseMode
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; otherwise this returns to caller with
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; C clear, all other flags and registers clobbered
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;------------------------------------------------------------------------------
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Help
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jsr LoadFile ; load help text into $8000
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!word kRootDirectory
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!word kHelpTextFile
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!word $8000
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jsr LoadHelpOffscreen
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lda OffscreenPage
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ror ; draw on offscreen page
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+LDADDR $8000
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ldx #8
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jsr DrawPage ; draw help text
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jsr ShowOtherPage
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jsr WaitForKeyFor30Seconds
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cmp #$88
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beq BrowseMode
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cmp #$83
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beq -
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cmp #$81
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beq -
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jsr IsUpDownOrRightArrow
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beq -
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jsr IsSearchKey
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bne --
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rts
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