mirror of
https://github.com/thornAvery/jep-hack.git
synced 2025-11-04 21:01:01 +13:00
613 lines
9.1 KiB
NASM
613 lines
9.1 KiB
NASM
SECTION "Credits", ROMX
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Credits::
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bit 6, b ; Hall Of Fame
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ld a, $0
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jr z, .okay
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ld a, $40
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.okay
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ld [wJumptableIndex], a
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ldh a, [rSVBK]
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push af
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ld a, BANK(wGBCPalettes)
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ldh [rSVBK], a
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call ClearBGPalettes
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call ClearTilemap
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call ClearSprites
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ld hl, wCreditsBlankFrame2bpp
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ld c, (wCreditsBlankFrame2bppEnd - wCreditsBlankFrame2bpp) / 2
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ld de, `22222222 ; eight pixels, each color #2 (dark)
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; Fill wCreditsBlankFrame2bpp with 4x4=16 tiles, all solid dark color
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; (the same color used for the four border frame mons' backgrounds)
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.load_loop
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ld a, e
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ld [hli], a
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ld a, d
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ld [hli], a
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dec c
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jr nz, .load_loop
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ld de, CreditsBorderGFX
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ld hl, vTiles2 tile $20
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lb bc, BANK(CreditsBorderGFX), 9
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call Request2bpp
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ld de, CopyrightGFX
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ld hl, vTiles2 tile $60
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lb bc, BANK(CopyrightGFX), 29
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call Request2bpp
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ld de, TheEndGFX
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ld hl, vTiles2 tile $40
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lb bc, BANK(TheEndGFX), 16
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call Request2bpp
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ld a, $ff
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ld [wCreditsBorderFrame], a
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xor a
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ld [wCreditsBorderMon], a
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call Credits_LoadBorderGFX
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ld e, l
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ld d, h
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ld hl, vTiles2
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lb bc, BANK(CreditsMonsGFX), 16
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call Request2bpp
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call ConstructCreditsTilemap
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xor a
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ld [wCreditsLYOverride], a
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ld hl, wLYOverrides
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ld bc, $100
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xor a
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call ByteFill
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ld a, LOW(rSCX)
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ldh [hLCDCPointer], a
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call GetCreditsPalette
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call SetPalettes
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; BUG: Credits sequence changes move selection menu behavior (see docs/bugs_and_glitches.md)
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ldh a, [hVBlank]
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push af
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ld a, $5
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ldh [hVBlank], a
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ld a, TRUE
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ldh [hInMenu], a
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xor a
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ldh [hBGMapMode], a
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ld [wCreditsPos], a
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ld [wCreditsPos + 1], a
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ld [wCreditsTimer], a
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.execution_loop
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call Credits_HandleBButton
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call Credits_HandleAButton
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jr nz, .exit_credits
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call Credits_Jumptable
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call DelayFrame
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jr .execution_loop
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.exit_credits
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call ClearBGPalettes
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xor a
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ldh [hLCDCPointer], a
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ldh [hBGMapAddress], a
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pop af
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ldh [hVBlank], a
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pop af
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ldh [rSVBK], a
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ret
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Credits_HandleAButton:
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ldh a, [hJoypadDown]
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and A_BUTTON
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ret z
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ld a, [wJumptableIndex]
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bit 7, a
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ret
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Credits_HandleBButton:
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ldh a, [hJoypadDown]
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and B_BUTTON
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ret z
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ld a, [wJumptableIndex]
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bit 6, a
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ret z
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ld hl, wCreditsPos
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ld a, [hli]
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cp $d
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jr nc, .okay
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ld a, [hli]
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and a
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ret z
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.okay
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ld hl, wCreditsTimer
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ld a, [hl]
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and a
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ret z
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dec [hl]
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ret
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Credits_Jumptable:
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ld a, [wJumptableIndex]
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and $f
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ld e, a
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ld d, 0
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ld hl, .Jumptable
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add hl, de
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add hl, de
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ld a, [hli]
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ld h, [hl]
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ld l, a
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jp hl
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.Jumptable:
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dw ParseCredits
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dw Credits_Next
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dw Credits_Next
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dw Credits_PrepBGMapUpdate
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dw Credits_UpdateGFXRequestPath
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dw Credits_RequestGFX
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dw Credits_LYOverride
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dw Credits_Next
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dw Credits_Next
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dw Credits_Next
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dw Credits_UpdateGFXRequestPath
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dw Credits_RequestGFX
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dw Credits_LoopBack
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Credits_Next:
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ld hl, wJumptableIndex
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inc [hl]
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ret
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Credits_LoopBack:
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ld hl, wJumptableIndex
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ld a, [hl]
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and $f0
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ld [hl], a
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ret
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Credits_PrepBGMapUpdate:
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xor a
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ldh [hBGMapMode], a
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jp Credits_Next
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Credits_UpdateGFXRequestPath:
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call Credits_LoadBorderGFX
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ld a, l
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ld [wRequested2bppSource], a
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ld a, h
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ld [wRequested2bppSource + 1], a
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ld a, LOW(vTiles2)
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ld [wRequested2bppDest], a
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ld a, HIGH(vTiles2)
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ld [wRequested2bppDest + 1], a
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jr Credits_RequestGFX
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Credits_RequestGFX:
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xor a
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ldh [hBGMapMode], a
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ld a, 8
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ld [wRequested2bppSize], a
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jp Credits_Next
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Credits_LYOverride:
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ldh a, [rLY]
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cp $30
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jr c, Credits_LYOverride
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ld a, [wCreditsLYOverride]
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dec a
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dec a
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ld [wCreditsLYOverride], a
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ld hl, wLYOverrides + $1f
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call .Fill
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ld hl, wLYOverrides + $87
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call .Fill
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jp Credits_Next
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.Fill:
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ld c, $8
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.loop
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ld [hli], a
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dec c
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jr nz, .loop
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ret
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ParseCredits:
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ld hl, wJumptableIndex
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bit 7, [hl]
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jp nz, .done
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; Wait until the timer has run out to parse the next command.
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ld hl, wCreditsTimer
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ld a, [hl]
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and a
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jr z, .parse
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; One tick has passed.
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dec [hl]
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jp .done
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.parse
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; First, let's clear the current text display,
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; starting from line 5.
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xor a
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ldh [hBGMapMode], a
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hlcoord 0, 5
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ld bc, SCREEN_WIDTH * 12
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ld a, " "
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call ByteFill
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; Then read the script.
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.loop
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call .get
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; Commands:
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cp CREDITS_END
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jp z, .end
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cp CREDITS_WAIT
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jr z, .wait
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cp CREDITS_SCENE
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jr z, .scene
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cp CREDITS_CLEAR
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jr z, .clear
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cp CREDITS_MUSIC
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jr z, .music
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cp CREDITS_WAIT2
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jr z, .wait2
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cp CREDITS_THEEND
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jr z, .theend
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; If it's not a command, it's a string identifier.
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push af
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ld e, a
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ld d, 0
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ld hl, CreditsStringsPointers
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add hl, de
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add hl, de
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ld a, [hli]
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ld d, [hl]
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ld e, a
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pop af
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; Strings spanning multiple lines have special cases.
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cp COPYRIGHT
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jr z, .copyright
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cp STAFF
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jr c, .staff
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; The rest start from line 6.
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hlcoord 0, 6
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jr .print
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.copyright
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hlcoord 2, 6
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jr .print
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.staff
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hlcoord 0, 6
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.print
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; Print strings spaced every two lines.
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call .get
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ld bc, SCREEN_WIDTH * 2
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call AddNTimes
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call PlaceString
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jr .loop
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.theend
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; Display "The End" graphic.
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call Credits_TheEnd
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jr .loop
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.scene
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; Update the scene number and corresponding palette.
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call .get
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ld [wCreditsBorderMon], a ; scene
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xor a
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ld [wCreditsBorderFrame], a ; frame
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call GetCreditsPalette
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call SetPalettes ; update hw pal registers
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jr .loop
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.clear
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; Clear the banner.
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ld a, $ff
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ld [wCreditsBorderFrame], a ; frame
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jr .loop
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.music
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; Play the credits music.
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ld de, MUSIC_CREDITS
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push de
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ld de, MUSIC_NONE
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call PlayMusic
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call DelayFrame
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pop de
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call PlayMusic
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jp .loop
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.wait2
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; Wait for some amount of ticks.
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call .get
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ld [wCreditsTimer], a
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jr .done
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.wait
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; Wait for some amount of ticks, and do something else.
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call .get
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ld [wCreditsTimer], a
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xor a
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ldh [hBGMapThird], a
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ld a, 1
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ldh [hBGMapMode], a
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.done
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jp Credits_Next
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.end
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; Stop execution.
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ld hl, wJumptableIndex
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set 7, [hl]
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ld a, 32
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ld [wMusicFade], a
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ld a, LOW(MUSIC_POST_CREDITS)
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ld [wMusicFadeID], a
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ld a, HIGH(MUSIC_POST_CREDITS)
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ld [wMusicFadeID + 1], a
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ret
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.get
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; Get byte wCreditsPos from CreditsScript
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push hl
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push de
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ld a, [wCreditsPos]
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ld e, a
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ld a, [wCreditsPos + 1]
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ld d, a
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ld hl, CreditsScript
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add hl, de
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inc de
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ld a, e
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ld [wCreditsPos], a
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ld a, d
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ld [wCreditsPos + 1], a
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ld a, [hl]
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pop de
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pop hl
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ret
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ConstructCreditsTilemap:
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xor a
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ldh [hBGMapMode], a
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ld a, $c
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ldh [hBGMapAddress], a
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ld a, $28
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hlcoord 0, 0
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ld bc, SCREEN_HEIGHT * SCREEN_WIDTH
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call ByteFill
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ld a, $7f
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hlcoord 0, 4
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ld bc, (SCREEN_HEIGHT - 4) * SCREEN_WIDTH
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call ByteFill
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hlcoord 0, 4
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ld a, $24
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call DrawCreditsBorder
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hlcoord 0, 17
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ld a, $20
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call DrawCreditsBorder
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hlcoord 0, 0, wAttrmap
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ld bc, 4 * SCREEN_WIDTH
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xor a
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call ByteFill
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hlcoord 0, 4, wAttrmap
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ld bc, SCREEN_WIDTH
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ld a, $1
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call ByteFill
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hlcoord 0, 5, wAttrmap
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ld bc, 12 * SCREEN_WIDTH
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ld a, $2
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call ByteFill
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hlcoord 0, 17, wAttrmap
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ld bc, SCREEN_WIDTH
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ld a, $1
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call ByteFill
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call WaitBGMap2
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xor a
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ldh [hBGMapMode], a
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ldh [hBGMapAddress], a
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hlcoord 0, 0
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call .InitTopPortion
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call WaitBGMap2
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ret
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.InitTopPortion:
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ld b, 5
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.outer_loop
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push hl
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ld de, SCREEN_WIDTH - 3
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ld c, 4
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xor a
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.inner_loop
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rept 3
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ld [hli], a
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inc a
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endr
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ld [hl], a
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inc a
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add hl, de
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dec c
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jr nz, .inner_loop
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pop hl
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rept 4
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inc hl
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endr
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dec b
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jr nz, .outer_loop
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ret
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DrawCreditsBorder:
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ld c, SCREEN_WIDTH / 4
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.loop
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push af
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rept 3
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ld [hli], a
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inc a
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endr
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ld [hli], a
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pop af
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dec c
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jr nz, .loop
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ret
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GetCreditsPalette:
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call .GetPalAddress
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push hl
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ld a, 0
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call .UpdatePals
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pop hl
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ret
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.GetPalAddress:
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; Each set of palette data is 24 bytes long.
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ld a, [wCreditsBorderMon] ; scene
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and %11
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add a
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add a ; * 8
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add a
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ld e, a
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ld d, 0
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ld hl, CreditsPalettes
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add hl, de
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add hl, de ; * 3
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add hl, de
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ret
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.UpdatePals:
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; Update the first three colors in both palette buffers.
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push af
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push hl
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add LOW(wBGPals1)
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ld e, a
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ld a, 0
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adc HIGH(wBGPals1)
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ld d, a
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ld bc, 24
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call CopyBytes
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pop hl
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pop af
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add LOW(wBGPals2)
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ld e, a
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ld a, 0
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adc HIGH(wBGPals2)
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ld d, a
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ld bc, 24
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call CopyBytes
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ret
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CreditsPalettes:
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INCLUDE "gfx/credits/credits.pal"
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Credits_LoadBorderGFX:
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ld hl, wCreditsBorderFrame
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ld a, [hl]
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cp $ff
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jr z, .init
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and %11
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ld e, a
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inc a
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and %11
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ld [hl], a
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ld a, [wCreditsBorderMon]
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and %11
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add a
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add a
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add e
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add a
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ld e, a
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ld d, 0
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ld hl, .Frames
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add hl, de
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ld a, [hli]
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ld h, [hl]
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ld l, a
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ret
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.init
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ld hl, wCreditsBlankFrame2bpp
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ret
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.Frames:
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dw CreditsPichuGFX
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dw CreditsPichuGFX + 16 tiles
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dw CreditsPichuGFX + 32 tiles
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dw CreditsPichuGFX + 48 tiles
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dw CreditsSmoochumGFX
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dw CreditsSmoochumGFX + 16 tiles
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dw CreditsSmoochumGFX + 32 tiles
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dw CreditsSmoochumGFX + 48 tiles
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dw CreditsDittoGFX
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dw CreditsDittoGFX + 16 tiles
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dw CreditsDittoGFX + 32 tiles
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dw CreditsDittoGFX + 48 tiles
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dw CreditsIgglybuffGFX
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dw CreditsIgglybuffGFX + 16 tiles
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dw CreditsIgglybuffGFX + 32 tiles
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dw CreditsIgglybuffGFX + 48 tiles
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Credits_TheEnd:
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ld a, $40
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hlcoord 6, 9
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call .Load
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hlcoord 6, 10
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.Load:
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ld c, 8
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.loop
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ld [hli], a
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inc a
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dec c
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jr nz, .loop
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ret
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CreditsBorderGFX: INCBIN "gfx/credits/border.2bpp"
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CreditsMonsGFX: ; used only for BANK(CreditsMonsGFX)
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CreditsPichuGFX: INCBIN "gfx/credits/pichu.2bpp"
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CreditsSmoochumGFX: INCBIN "gfx/credits/smoochum.2bpp"
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CreditsDittoGFX: INCBIN "gfx/credits/ditto.2bpp"
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CreditsIgglybuffGFX: INCBIN "gfx/credits/igglybuff.2bpp"
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INCLUDE "data/credits_script.asm"
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INCLUDE "data/credits_strings.asm"
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