;license:MIT
;(c) 2019 by qkumba
;(c) 2020 by 4am
;
; animated interstitial screen
;
; Public functions:
; - MaybeShowInterstitial
;

progressStringsLo
         !byte <sProgress10
         !byte <sProgress20
         !byte <sProgress30
         !byte <sProgress40
         !byte <sProgress50
         !byte <sProgress60
         !byte <sProgress70
         !byte <sProgress80
         !byte <sProgress90
         !byte <sProgress100
progressStringsHi
         !byte >sProgress10
         !byte >sProgress20
         !byte >sProgress30
         !byte >sProgress40
         !byte >sProgress50
         !byte >sProgress60
         !byte >sProgress70
         !byte >sProgress80
         !byte >sProgress90
         !byte >sProgress100

progressHTABs
         !byte 7
         !byte 8
         !byte 8
         !byte 8
         !byte 7
         !byte 2
         !byte 9
         !byte 7
         !byte 6
         !byte 4

;------------------------------------------------------------------------------
; MaybeShowInterstitial
; display interstitial progress animation after every 10 completed puzzles
;
; in:    A = next puzzle ID (in this world)
;        X = # of puzzles completed (in this world)
; out:   preserves A
;        C set if all puzzles were completed
;        C clear if there are more puzzles in this world (and A = next puzzle ID)
;        Y, other flags clobbered
;------------------------------------------------------------------------------
MaybeShowInterstitial
         pha
         cpx   #100
         bne   +
         ldy   #10
         jsr   ShowInterstitialWorldComplete
         sec
         bcs   @exit                 ; always branches
+        ldy   #0
-        iny
         dex
         dex
         dex
         dex
         dex
         dex
         dex
         dex
         dex
         dex                         ; don't judge me
         bmi   +
         bne   -
         jsr   ShowInterstitialWorldProgress
+        clc
@exit    pla
         rts

ShowInterstitialWorldProgress
ShowInterstitialWorldComplete
; [private]
; in:    Y = which progress string to display (1..9)
; out:   all registers and flags clobbered
         bit   CLEARKBD
         tya
         tax
         dex
         jsr   Home
         lda   #11
         sta   targetVTAB
         lda   progressHTABs, x
         sta   minHTAB
         lda   progressStringsHi, x
         tay
         lda   progressStringsLo, x
         jsr   HeavySilkReveal
         lda   KBD
         bmi   +
         ; wildcard, will allow any key to terminate sound
         +LDADDR sOneSpace
         +ST16 $EE
         +LDADDR InterstitialProgressMusic
         jsr   PlaySound
         ldx   #21
         jsr   LongWaitForKeyWithTimeout
         bmi   +
         lda   #0
         sta   targetVTAB
         sta   minHTAB
         +LDADDR sOneSpace
         jsr   HeavySilkReveal
+        jmp   Home