Merge pull request #57 from a2-4am/animation

Spare Change title animation

Makefile

@@ -68,6 +68,8 @@ dsk: md asm
 	$(CADIUS) ADDFOLDER build/"$(DISK)" "/$(VOLUME)/SS" "build/SS" >>build/log
 	rsync -aP res/demo/* build/DEMO >>build/log
 	$(CADIUS) ADDFOLDER build/"$(DISK)" "/$(VOLUME)/DEMO" "build/DEMO" >>build/log
+	rsync -aP res/title.animated/* build/TITLE.ANIMATED >>build/log
+	$(CADIUS) ADDFOLDER build/"$(DISK)" "/$(VOLUME)/TITLE.ANIMATED" "build/TITLE.ANIMATED" >>build/log
 	$(CADIUS) RENAMEFILE build/"$(DISK)" "/$(VOLUME)/DEMO/SPCARTOON.11" "SPCARTOON.1." >>build/log
 	$(CADIUS) RENAMEFILE build/"$(DISK)" "/$(VOLUME)/DEMO/SPCARTOON.22" "SPCARTOON.2." >>build/log
 	$(CADIUS) RENAMEFILE build/"$(DISK)" "/$(VOLUME)/DEMO/SPCARTOON.33" "SPCARTOON.3." >>build/log
@@ -113,6 +115,7 @@ md:
 	mkdir -p build/ACTION.DHGR
 	mkdir -p build/ACTION.GR
 	mkdir -p build/ARTWORK.SHR
+	mkdir -p build/TITLE.ANIMATED
 	mkdir -p build/ATTRACT
 	mkdir -p build/SS
 	mkdir -p build/DEMO

res/title.animated/_FileInformation.txt

@@ -0,0 +1,2 @@
+SPARE.CHANGE=Type(06),AuxType(0300),Access(C3)
+SPARE.CHANGE.1=Type(F1),AuxType(0000),Access(C3)

src/4cade.a

@@ -82,8 +82,10 @@ ResetVector                          ; 6 bytes, copied to $100
          ; these routines will only be called after relocating to language card
          !source "src/ui.search.mode.a"
          !source "src/ui.browse.mode.a"
+         !source "src/prodos.path.a"
          !source "src/ui.overlay.a"
          !source "src/ui.offscreen.a"
+         !source "src/ui.animation.a"
          !source "src/ui.credits.a"
          !source "src/ui.attract.mode.a"
          !source "src/ui.attract.hgr.a"
@@ -91,7 +93,6 @@ ResetVector                          ; 6 bytes, copied to $100
          !source "src/ui.attract.shr.a"
          !source "src/ui.attract.gr.a"
          !source "src/ui.cheats.a"
-         !source "src/prodos.path.a"
          !source "src/glue.launch.a"
          !source "src/glue.prorwts2.a"
          !source "src/okvs.a"

src/prodos.path.a

@@ -16,6 +16,10 @@ kDHGRTitleDirectory
          !byte 11
          !raw  "TITLE.DHGR/"
 
+kAnimatedTitleDirectory
+         !byte 15
+         !raw  "TITLE.ANIMATED/"
+
 kHGRActionDirectory
          !byte 11
          !raw  "ACTION.HGR/"
@@ -141,6 +145,6 @@ AddToPath
 @done
          rts
 
-!if >kTitleFile != >kCoverFile {
+;!if >kTitleFile != >kCoverFile {
-  !error ">kTitleFile != >kCoverFile, uncomment LoadTitleOffscreen block in ui.offscreen and disable this check"
+;  !error ">kTitleFile != >kCoverFile, uncomment LoadTitleOffscreen block in ui.offscreen and disable this check"
-}
+;}

src/ui.animation.a

@@ -0,0 +1,73 @@
+;License:MIT
+;(c) 2018-9 by 4am
+;
+; functions for animated title screens
+;
+; - MaybeAnimateTitle
+;
+
+MaybeAnimateTitle
+         lda   OffscreenPage
+         bne   +
+         lda   #$5F
+         +HIDE_NEXT_2_BYTES
++        lda   #$3F
+         sta   SAVE+1
+         lda   #$FD
+         sta   SAVE
+         ldy   #0
+         lda   (SAVE),y              ; see if there is a hidden JMP to an
+         cmp   #$4C                  ; animation routine for this screen
+         beq   +
+         rts
++
+         ldx   #$20                  ; copy new HGR screen to the other
+         ldy   #$40
+         lda   OffscreenPage
+         beq   +
+         stx   @a+2
+         sty   @b+2
+         jmp   ++
++        sty   @a+2
+         stx   @b+2
+++       ldx   #$20
+         ldy   #0
+@a       lda   $FD00,y               ; SMC
+@b       sta   $FD00,y               ; SMC
+         iny
+         bne   @a
+         inc   @a+2
+         inc   @b+2
+         dex
+         bne   @a
+
+         +LDADDR gGamesListStore     ; if so, load the animation routine
+         ldx   gGameToLaunch         ; which is stored in a subdirectory
+         jsr   okvs_nth              ; and keyed off the current game's
+         +STAY @fname                ; filename
+         jsr   LoadFile
+         !word kAnimatedTitleDirectory
+@fname   !word $FDFD
+         !word 0
+
+         ldy   kAnimatedTitleDirectory
+         sty   ProDOS_prefix         ; temporarily set 'root' directory to
+-        lda   kAnimatedTitleDirectory,y;/title.animated/ so animation file
+         sta   ProDOS_prefix, y      ; can load other files in the same subdirectory
+         dey
+         bne   -
+
+         ldx   #5                    ; copy prelaunch code
+-        lda   @titleAnimPrelaunch,x
+         sta   $106,x
+         dex
+         bpl   -
+
+         jsr   Launch
+         jsr   ResyncPage
+         clc                         ; tell caller not to refresh screen
+         rts
+
+@titleAnimPrelaunch
+         bit   $C082
+         jmp   (SAVE)

src/ui.browse.mode.a

@@ -111,7 +111,8 @@ ForceBrowseChanged
 OnBrowseChanged
 ; in:    X = game index
          jsr   LoadGameTitleOffscreen
-         jmp   DrawUIWithoutDots
+         jsr   DrawUIWithoutDots
+         jmp   MaybeAnimateTitle
 
 ;------------------------------------------------------------------------------
 

src/ui.offscreen.a

@@ -8,6 +8,7 @@
 ; - LoadCoverOffscreen
 ; - LoadHelpOffscreen
 ; - LoadGameTitleOffscreen
+; - ResyncPage
 ; - ShowOtherPage
 ; - ToggleOffscreenPage
 ; - ClearOffscreen
@@ -47,15 +48,15 @@ GetOffscreenAddress
 ; out:   all flags and registers clobbered
 ;------------------------------------------------------------------------------
 LoadTitleOffscreen
-;;!if >kTitleFile = >kCoverFile {
+!if >kTitleFile = >kCoverFile {
          lda   #<kTitleFile
          +HIDE_NEXT_2_BYTES
-;;} else {
+} else {
-;;         +LDADDR kTitleFile
+         +LDADDR kTitleFile
-;;         bne   +                     ; Always branches, because Y is loaded
+         bne   +                     ; Always branches, because Y is loaded
-;;                                     ; last with the high byte of the address,
+                                     ; last with the high byte of the address,
-;;                                     ; which is never 0. I miss my 65c02.
+                                     ; which is never 0. I miss my 65c02.
-;;}
+}
 ;------------------------------------------------------------------------------
 ; LoadHelpOffscreen
 ; load help screen in the HGR page that is currently not showing
@@ -131,6 +132,10 @@ ClearHGR1
          bne   @a
          rts
 
+ResyncPage
+         jsr   ToggleOffscreenPage
+         ; execution falls through here
+
 ;------------------------------------------------------------------------------
 ; ShowOtherPage
 ; switch to the HGR page that is not currently showing

src/ui.search.mode.a

@@ -146,7 +146,8 @@ OnError
                                      ; in order to draw on the visible page.
          bpl   @noload               ; (always branches)
 +        jsr   LoadGameTitleOffscreen
-@noload  jmp   DrawUI
+@noload  jsr   DrawUI
+         jmp   MaybeAnimateTitle
 
 ;------------------------------------------------------------------------------
 ; IsSearchKey