mirror of
https://github.com/blondie7575/GSCats.git
synced 2024-11-22 06:31:48 +00:00
438 lines
7.1 KiB
ArmAsm
438 lines
7.1 KiB
ArmAsm
;
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; titleScreen
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; A friendly place to start the game
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;
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; Created by Quinn Dunki on 7/23/23
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;
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.a16
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.i16
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titlePalette:
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.word $06af,$0072,$0072,$0861,$0c93,$0eb4,$0d66,$0f9a,$0777,$0d00,$0bbb,$ddd,$007b,$0a5b,$0000,$0fff
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TITLE_ANIMATION_FRAMES = 5
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CAT_DELAY = 300
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CAT0_VRAM = $5d79
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CAT1_VRAM = $5da0
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; titleScreen
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;
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; Shows the title screen and main game menu
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;
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titleScreen:
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lda #%10000000 ; Set all SCBs to 320, no interrupts, palette 0
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jsr initSCBs
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stz leftScreenEdge
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; Copy title screen art from where it was loaded in bank 6
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; This isn't fast, but doesn't need to be
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ldx #0
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titleScreenCopyLoop:
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lda $060000,x
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sta SHADOWVRAM,x
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inx
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inx
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cpx #$7d00
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bne titleScreenCopyLoop
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; Set up sprite rendering
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BITS8
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lda #3
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sta SpriteBankBank00+3 ; Tell compiled sprites what bank they are in
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BITS16
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; Set up audio
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jsr initSoundSystem
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; Render menu text
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jsr titleScreenRenderMenu
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jsr setBorderAtScanLine
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; Fade in
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lda #titlePalette
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sta PARAML2
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jsr paletteFade
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ldy #CAT0_VRAM ; Save a generic background to erase cats
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jsr protectAnimation16x16
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titleScreenMainLoop:
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; Track animations
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;jsr syncOverscanBottom ; This looks awesome but makes interactivity terrible
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jsr syncVBL
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;BORDER_COLOR #$7
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lda titleAnimationCounter
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inc
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cmp TITLE_ANIMATION_FRAMES
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jsr titleScreenResetAnimation
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; Update current animation if needed
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lda animationState+AS_CURRENTFRAME
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bmi titleScreenIdle
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jsr tickAnimation
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bra titleScreenKeyboard
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titleScreenIdle:
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; Time start of cat 0 animation
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lda animationDelay0
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dec
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bne titleScreenStillCat
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lda #CAT_DELAY
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sta animationDelay0
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; Start new cat 0 animation
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ldy #CAT0_VRAM
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jsr unrenderAnimation16x16
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lda #titleAnimationPos0
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sta PARAML0
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ldx #TITLE_ANIMATION_FRAMES
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ldy #30
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lda #ANIMATION_SIZE_16x32
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jsr startAnimation
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bra titleScreenNextCat
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titleScreenStillCat:
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; Render idle cat 0
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sta animationDelay0
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ldy #CAT0_VRAM
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lda #29
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jsr drawSpriteBankSafe
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titleScreenNextCat:
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; Time start of cat 1 animation
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lda animationDelay1
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dec
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bne titleScreenStillCat2
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lda #CAT_DELAY
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sta animationDelay1
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; Start new cat 1 animation
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ldy #CAT1_VRAM
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jsr unrenderAnimation16x16
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lda #titleAnimationPos1
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sta PARAML0
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ldx #TITLE_ANIMATION_FRAMES
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ldy #21
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lda #ANIMATION_SIZE_16x32
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jsr startAnimation
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bra titleScreenKeyboard
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titleScreenStillCat2:
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; Render idle cat 1
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sta animationDelay1
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ldy #CAT1_VRAM
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lda #20
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jsr drawSpriteBankSafe
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titleScreenKeyboard:
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; Check for selection
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jsr kbdScanTitle
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jsr kbdScanDebug
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lda menuActionRequested
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beq titleScreenMainLoopEndFrame
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cmp #-1
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beq titleScreenKeyboardMenuUp
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cmp #1
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beq titleScreenKeyboardMenuDown
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cmp #2
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beq titleScreenKeyboardMenuGo
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bra titleScreenMainLoopEndFrame
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titleScreenResetAnimation:
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stz titleAnimationCounter
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rts
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titleScreenKeyboardMenuUp:
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lda menuSelection
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beq titleScreenMainLoopEndFrame
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dec
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sta menuSelection
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jsr titleScreenRenderMenu
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bra titleScreenMainLoopEndFrame
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titleScreenKeyboardMenuDown:
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lda menuSelection
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cmp #2
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beq titleScreenMainLoopEndFrame
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inc
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sta menuSelection
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jsr titleScreenRenderMenu
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bra titleScreenMainLoopEndFrame
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titleScreenKeyboardMenuGo:
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lda menuSelection
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beq titleScreenBeginGame
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cmp #1
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beq titleScreenHelp
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cmp #2
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beq titleScreenQuit
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titleScreenMainLoopEndFrame:
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stz menuActionRequested
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jmp titleScreenMainLoop
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titleScreenBeginGame:
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; Transition to gameplay
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jsr titleScreenRemoveBorderEffect
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stz menuActionRequested
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lda #skyPalette
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sta PARAML2
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jsr paletteFade
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jmp beginGameplay
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titleScreenQuit:
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jsr titleScreenRemoveBorderEffect
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jmp quitGame
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titleScreenHelp:
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jsr titleScreenRemoveBorderEffect
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stz menuActionRequested
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; Fade out
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lda #skyPalette
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sta PARAML2
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jsr paletteFade
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jmp titleScreenRenderHelp
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titleScreenRemoveBorderEffect:
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jsr unsetVBLInterruptVector
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jsr unsetScanLineInterruptVector
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rts
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titleAnimationCounter:
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.word 0
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titleAnimationPos0:
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.word 114,120
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titleAnimationPos1:
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.word 192,120
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animationDelay0:
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.word CAT_DELAY/2
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animationDelay1:
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.word CAT_DELAY
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menuActionRequested:
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.word 0
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selectionString:
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pstring "[[[[[[[[[[[[[[[["
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unselectionString:
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pstring "\\\\\\\\\\\\\\\\"
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startString:
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pstring "BEGIN GAME"
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helpString:
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pstring "HOW TO PLAY"
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quitString:
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pstring "QUIT"
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menuSelection:
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.word 0
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; titleScreenRenderMenu
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;
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; Render the game menu
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;
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; Trashes A
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;
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titleScreenRenderMenu:
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ldy #$78f0
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jsr titleScreenUnRenderSelection
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lda menuSelection
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bne titleScreenRenderMenuItem0
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ldy #$78f0
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jsr titleScreenRenderSelection
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titleScreenRenderMenuItem0:
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lda #startString
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sta PARAML0
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lda #1
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ldy #$78fc
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jsl renderStringFar
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ldy #$7f30
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jsr titleScreenUnRenderSelection
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lda menuSelection
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cmp #1
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bne titleScreenRenderMenuItem1
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ldy #$7f30
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jsr titleScreenRenderSelection
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titleScreenRenderMenuItem1:
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lda #helpString
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sta PARAML0
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lda #1
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ldy #$7f39
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jsl renderStringFar
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ldy #$8570
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jsr titleScreenUnRenderSelection
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lda menuSelection
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cmp #2
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bne titleScreenRenderMenuItem2
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ldy #$8570
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jsr titleScreenRenderSelection
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titleScreenRenderMenuItem2:
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lda #quitString
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sta PARAML0
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lda #1
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ldy #$8588
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jsl renderStringFar
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; titleScreenRenderSelection
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;
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; Render the menu selection bar
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;
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; Y = VRAM position of bar
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;
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titleScreenRenderSelection:
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lda #selectionString
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sta PARAML0
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lda #1
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jsl renderStringFar
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; titleScreenUnRenderSelection
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;
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; Unrender the menu selection bar
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;
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; Y = VRAM position of bar
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;
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titleScreenUnRenderSelection:
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lda #unselectionString
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sta PARAML0
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lda #1
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jsl renderStringFar
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; titleScreenRenderHelp
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;
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; Render the help menu
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;
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titleScreenRenderHelp:
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SAVE_AXY
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; Clear screen
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ldx #0
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ldy #200
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jsr colorFill
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; Draw help text
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lda #helpText0
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sta PARAML0
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ldy #$2c8a
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lda #1
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jsl renderStringFar
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lda #helpText1
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sta PARAML0
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ldy #$32ca
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lda #1
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jsl renderStringFar
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lda #helpText2
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sta PARAML0
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ldy #$390a
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lda #1
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jsl renderStringFar
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lda #helpText3
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sta PARAML0
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ldy #$4bed
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lda #2
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jsl renderStringFar
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lda #helpText4
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sta PARAML0
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ldy #$572d
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lda #2
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jsl renderStringFar
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lda #helpText5
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sta PARAML0
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ldy #$6265
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lda #2
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jsl renderStringFar
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lda #helpText6
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sta PARAML0
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ldy #$6dad
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lda #2
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jsl renderStringFar
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lda #helpText7
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sta PARAML0
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ldy #$78ed
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lda #2
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jsl renderStringFar
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lda #helpText8
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sta PARAML0
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ldy #$8435
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lda #2
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jsl renderStringFar
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lda #helpText9
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sta PARAML0
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ldy #$90b7
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lda #1
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jsl renderStringFar
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; Fade in
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lda #titlePalette
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sta PARAML2
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jsr paletteFade
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jsr kbdWaitForAnyKey
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; Fade out
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lda #skyPalette
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sta PARAML2
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jsr paletteFade
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RESTORE_AXY
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jmp titleScreen
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helpText0:
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pstring "SPROCKET AND TINKER DO NOT GET ALONG!"
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helpText1:
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pstring "YOUR GOAL IS TO ANGER THE OTHER CAT"
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helpText2:
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pstring "SO MUCH THAT SHE PEES AND RUNS OFF."
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helpText3:
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pstring "_^ AIM"
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helpText4:
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pstring "\] POWER"
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helpText5:
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pstring "`ab FIRE"
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helpText6:
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pstring "ef WEAPON"
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helpText7:
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pstring "cd SCROLL"
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helpText8:
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pstring "g QUIT"
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helpText9:
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pstring "PRESS ANY KEY"
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