2019-10-08 17:31:41 +00:00
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;License:MIT
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;(c) 2018-9 by 4am
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;
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; UI functions for doing things then waiting, or waiting then doing things
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;
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; - ExecuteTransitionAndWait
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; - WaitForKeyFor30Seconds
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; - CoverFade
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2019-10-10 02:21:46 +00:00
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ExecuteTransitionAt6000AndWait
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ldy #$60
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+HIDE_NEXT_2_BYTES
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ExecuteTransitionAt6400AndWait
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ldy #$64
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+HIDE_NEXT_2_BYTES
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ExecuteTransitionAtA000AndWait
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ldy #$A0
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2019-10-08 17:31:41 +00:00
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; /!\ execution falls through here from ui.attract.dhgr/DHGRActionCallback
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;------------------------------------------------------------------------------
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; ExecuteTransitionAndWait
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; call transition effect code (address passed in) and wait a period of time
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; or until the user presses a key
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;
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; in: A/Y = address of transition effect code
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; out: all flags and registers clobbered
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;------------------------------------------------------------------------------
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ExecuteTransitionAndWait
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2019-10-10 02:21:46 +00:00
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lda #0
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2019-10-08 17:31:41 +00:00
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+STAY @j+1
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@j jsr $FDFD ; SMC call transition effect code
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ldx #$20 ; picture is showing so now we wait
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- lda #0
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jsr WaitForKeyWithTimeout
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bmi +
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dex
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bpl -
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+ lda KBD
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cmp #$95
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2019-10-08 19:01:19 +00:00
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bne WAITRTS
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2019-10-08 17:31:41 +00:00
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bit CLEARKBD
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2019-10-08 19:01:19 +00:00
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WAITRTS rts
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2019-10-08 17:31:41 +00:00
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; /!\ keep this last in the file to ensure it doesn't cross a page boundary /!\
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;------------------------------------------------------------------------------
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; WaitForKeyFor30Seconds
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; does what it says on the tin
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;
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; in: none
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; out: if user presses a key before the timer runs out, exits with A = key
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; and X/Y preserved
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; otherwise exits via MegaAttractMode and everything is clobbered
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;------------------------------------------------------------------------------
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WaitForKeyFor30Seconds
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lda #$16 ; initialize timeout counters
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sta Timeout
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sta Timeout+1
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sta Timeout+2
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@loop
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lda KBD
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2019-10-08 19:01:19 +00:00
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bmi WAITRTS
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2019-10-08 17:31:41 +00:00
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inc RNDSEED+1 ; these are only ever incremented, never
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bne + ; reset (may be used as a pseudorandom
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inc RNDSEED ; seed)
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+
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dec Timeout
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bne @loop
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dec Timeout+1
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bne @loop
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dec Timeout+2
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bne @loop
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; /!\ execution falls through here to CoverFade
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CoverFade
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jsr LoadCoverOffscreen
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jsr ShowOtherPage
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lda OffscreenPage
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bne +
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jsr LoadCoverOffscreen
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jsr ShowOtherPage
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+ jsr LoadFile ; load transition effect code at $6000
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!word kFXDirectory
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!word kCoverFadeFile
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!word $6000
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jsr $6000 ; call transition effect
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jmp MegaAttractMode ; exit via mega attract mode
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