162 lines
3.4 KiB
PHP
162 lines
3.4 KiB
PHP
LoadCardDataAsync: ; to be called as async
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ei
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ld a, 1
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ldh [vBlocked], a
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ldh a, [vSelectedCardIndex]
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ldh [vPreviousCardIndex], a
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ld b, 0
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ld c, a ; load bc from a, the number of the card in the cards list
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ld hl, Cards + 1 ; skip the length prefix
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add hl, bc
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add hl, bc
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add hl, bc ; triple add bc entries are bank, addr, addr
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ld a, [hl+]
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ld [rROMB0], a ; select the specified bank
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; follow the pointer we're looking at
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ld a, [hl+]
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ld c, a
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ld a, [hl+]
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ld b, a
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ld h, b
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ld l, c ; hl now contains the address of the card data.
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ld a, LOW(.duringDraw)
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ld [vAsyncNext], a
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ld a, HIGH(.duringDraw)
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ld [vAsyncNext+1], a
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ld a, 0
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ld [vAsyncAfter], a
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ld [vAsyncAfter+1], a
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di
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nop
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nop
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ret
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.duringDraw
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di ; these function calls should be fast so we'll disable interrupts and do them
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nop
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; synchronously
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; hl points to a card struct.
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; card struct starts with a sequence of length-prefixed strings in memory
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; so when we're done writing one, hl will be correctly placed to read the next
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; length-prefixed print doesn't require passing a length
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; so all we have to set is the destination for each
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ld de, $9800 + 32*11 + 10
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call PrintString
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ld de, $9800 + 32*12 + 10
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call PrintString
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ld de, $9800 + 32*14 + 10
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call PrintString
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ld de, $9800 + 32*15 + 10
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call PrintString
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ld de, $9800 + 32*16 + 10
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call PrintString
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ei
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; hl now contains the address after all the strings.
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; [hl+] and [hl+] read the length first, into bc
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ld a, [hl+]
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ld c, a
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ld a, [hl+]
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ld b, a ; bc has length
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ld a, [hl+]
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ld e, a
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ld a, [hl+]
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ld d, a ; de has source of tile range copy
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ld h, d
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ld l, e ; source
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ld de, $9800 + 32 + 1 ; destination
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ld b, 16 ; height
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ld c, 8 ; width
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ld a, LOW(CopyTilesToMapThreadsafe)
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ld [vAsyncNext], a
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ld a, HIGH(CopyTilesToMapThreadsafe)
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ld [vAsyncNext+1], a
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ld a, LOW(.afterCopyTiles)
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ld [vAsyncAfter], a
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ld a, HIGH(.afterCopyTiles)
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ld [vAsyncAfter+1], a
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di
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nop
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nop
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ret
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.afterCopyTiles
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ei
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ldh a, [vSelectedCardIndex]
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ldh [vPreviousCardIndex], a
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ld b, 0
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ld c, a ; load bc from a, the number of the card in the cards list
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ld hl, Cards + 1 ; skip the length prefix
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add hl, bc
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add hl, bc
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add hl, bc ; triple add bc entries are bank, addr, addr
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ld a, [hl+]
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ld [rROMB0], a ; select the specified bank
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; follow the pointer we're looking at
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ld a, [hl+]
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ld c, a
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ld a, [hl+]
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ld b, a
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ld h, b
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ld l, c ; hl now contains the address of the card data.
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di
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call PassList
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call PassList
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call PassList
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call PassList
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call PassList ; skip the strings
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ei
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inc hl
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inc hl ; skip tile map width
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inc hl
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inc hl ; skip tile map pointer
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ld a, [hl+]
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ld c, a
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ld a, [hl+]
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ld b, a ; bc has length of tile data
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ld a, [hl+]
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ld e, a
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ld a, [hl+]
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ld d, a ; de has source of tile range copy
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ld h, d
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ld l, e ; hl takes the source
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ld de, $9000 + VARIABLE_TILES_START*$10 ; always load tile data into the same spot in vram
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ld a, LOW(CopyRangeUnsafe)
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ld [vAsyncNext], a
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ld a, HIGH(CopyRangeUnsafe)
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ld [vAsyncNext+1], a
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ld a, LOW(.afterLoadingTiles)
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ld [vAsyncAfter], a
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ld a, HIGH(.afterLoadingTiles)
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ld [vAsyncAfter+1], a
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di
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nop
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nop
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ret
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.afterLoadingTiles
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ei
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ld a, 0
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ldh [vBlocked], a
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ld a, 0
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ld [vAsyncNext], a
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ld [vAsyncNext+1], a
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ld [vAsyncAfter], a
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ld [vAsyncAfter+1], a
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di
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nop
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nop
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ret
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