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https://gitlab.com/xCrystal/pokecrystal-board.git
synced 2024-09-09 09:51:34 -07:00
121 lines
2.2 KiB
NASM
121 lines
2.2 KiB
NASM
ReanchorBGMap_NoOAMUpdate::
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call DelayFrame
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ldh a, [hOAMUpdate]
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push af
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ld a, $1
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ldh [hOAMUpdate], a
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ldh a, [hBGMapMode]
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push af
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xor a
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ldh [hBGMapMode], a
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call .ReanchorBGMap
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pop af
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ldh [hBGMapMode], a
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pop af
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ldh [hOAMUpdate], a
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ld hl, wVramState
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set 6, [hl]
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ret
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.ReanchorBGMap:
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xor a
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ldh [hLCDCPointer], a
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ldh [hBGMapMode], a
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; prepare vBGMap1/vBGMap3 to be displayed while vBGMap0/vBGMap2 is reanchored.
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; draw screen at wTilemap and wAttrmap and then transfer it.
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ld a, $90
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ldh [hWY], a
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call LoadScreenTilemapAndAttrmapPals
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call LoadWindowHUD
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ld a, HIGH(vBGMap1)
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call .LoadBGMapAddrIntoHRAM
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call HDMATransferTilemapAndAttrmap_OpenAndCloseMenu
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farcall ApplyPals
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ld a, TRUE
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ldh [hCGBPalUpdate], a
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; display window using vBGMap1/vBGMap3 while vBGMap0/vBGMap2 is reanchored.
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; disable LCD interrupt to prevent cropping the window if window HUD is active
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; (caller must re-enable when window is hidden again).
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xor a
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ldh [rSTAT], a
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ldh [hBGMapMode], a
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ldh [hWY], a
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farcall HDMATransfer_FillBGMap0WithBlack ; no need to farcall
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ld a, HIGH(vBGMap0)
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call .LoadBGMapAddrIntoHRAM
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xor a ; LOW(vBGMap0)
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ld [wBGMapAnchor], a
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ld a, HIGH(vBGMap0)
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ld [wBGMapAnchor + 1], a
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xor a
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ldh [hSCX], a
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ldh [hSCY], a
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call ApplyBGMapAnchorToObjects
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ret
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.LoadBGMapAddrIntoHRAM:
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ldh [hBGMapAddress + 1], a
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xor a
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ldh [hBGMapAddress], a
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ret
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LoadFont_NoOAMUpdate::
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ldh a, [hOAMUpdate]
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push af
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ld a, $1
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ldh [hOAMUpdate], a
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call LoadFrame
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call HideWindow_EnableLCDInt
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call SafeUpdateSprites
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call LoadStandardFont
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pop af
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ldh [hOAMUpdate], a
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ret
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LoadOverworldFont_NoOAMUpdate::
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ldh a, [hOAMUpdate]
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push af
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ld a, $1
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ldh [hOAMUpdate], a
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call LoadOverworldFontAndFrame
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ld a, $90
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ldh [hWY], a
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call SafeUpdateSprites
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pop af
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ldh [hOAMUpdate], a
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ret
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HDMATransfer_FillBGMap0WithBlack:
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ldh a, [rSVBK]
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push af
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ld a, BANK(wDecompressScratch)
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ldh [rSVBK], a
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ld a, "■"
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ld hl, wDecompressScratch
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ld bc, wScratchAttrmap - wDecompressScratch
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call ByteFill
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ld a, HIGH(wDecompressScratch)
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ldh [rHDMA1], a
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ld a, LOW(wDecompressScratch)
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ldh [rHDMA2], a
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ld a, HIGH(vBGMap0 - VRAM_Begin)
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ldh [rHDMA3], a
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ld a, LOW(vBGMap0 - VRAM_Begin)
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ldh [rHDMA4], a
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ld a, $3f
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ldh [hDMATransfer], a
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call DelayFrame
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pop af
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ldh [rSVBK], a
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ret
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