Organize the engine/ directory, director's cut

Cleaned up `engine/routines`, in favor of moving files into more
appropriate directories. predef-related routines are now in top-level
`engine`.
`rtc/delete_save_change_clock.asm` has been split into both
`menus/delete_save.asm` and `rtc/reset_password.asm`.

Made a new subdirectory:
* engine/math: Contains all generic math-related routines.

1 files changed, 0 insertions, 300 deletions

diff --git a/engine/routines/printnum.asm b/engine/routines/printnum.asm
deleted file mode 100755
index fec798d5c..000000000
--- a/engine/routines/printnum.asm
+++ /dev/null
@@ -1,300 +0,0 @@
-_PrintNum:: ; c4c7
-; Print c digits of the b-byte value from de to hl.
-; Allows 2 to 7 digits. For 1-digit numbers, add
-; the value to char "0" instead of calling PrintNum.
-; Some extra flags can be given in bits 5-7 of b.
-; Bit 5: money if set (unless left-aligned without leading zeros)
-; Bit 6: right-aligned if set
-; Bit 7: print leading zeros if set
-
-	push bc
-
-	bit 5, b
-	jr z, .main
-	bit 7, b
-	jr nz, .moneyflag
-	bit 6, b
-	jr z, .main
-
-.moneyflag ; 101xxxxx or 011xxxxx
-	ld a, "¥"
-	ld [hli], a
-	res 5, b ; 100xxxxx or 010xxxxx
-
-.main
-	xor a
-	ld [hPrintNum1], a
-	ld [hPrintNum2], a
-	ld [hPrintNum3], a
-	ld a, b
-	and $f
-	cp 1
-	jr z, .byte
-	cp 2
-	jr z, .word
-; maximum 3 bytes
-.long
-	ld a, [de]
-	ld [hPrintNum2], a
-	inc de
-	ld a, [de]
-	ld [hPrintNum3], a
-	inc de
-	ld a, [de]
-	ld [hPrintNum4], a
-	jr .start
-
-.word
-	ld a, [de]
-	ld [hPrintNum3], a
-	inc de
-	ld a, [de]
-	ld [hPrintNum4], a
-	jr .start
-
-.byte
-	ld a, [de]
-	ld [hPrintNum4], a
-
-.start
-	push de
-
-	ld d, b
-	ld a, c
-	swap a
-	and $f
-	ld e, a
-	ld a, c
-	and $f
-	ld b, a
-	ld c, 0
-	cp 2
-	jr z, .two
-	cp 3
-	jr z, .three
-	cp 4
-	jr z, .four
-	cp 5
-	jr z, .five
-	cp 6
-	jr z, .six
-
-.seven
-	ld a, HIGH(1000000 >> 8)
-	ld [hPrintNum5], a
-	ld a, HIGH(1000000) ; mid
-	ld [hPrintNum6], a
-	ld a, LOW(1000000)
-	ld [hPrintNum7], a
-	call .PrintDigit
-	call .AdvancePointer
-
-.six
-	ld a, HIGH(100000 >> 8)
-	ld [hPrintNum5], a
-	ld a, HIGH(100000) ; mid
-	ld [hPrintNum6], a
-	ld a, LOW(100000)
-	ld [hPrintNum7], a
-	call .PrintDigit
-	call .AdvancePointer
-
-.five
-	xor a ; HIGH(10000 >> 8)
-	ld [hPrintNum5], a
-	ld a, HIGH(10000) ; mid
-	ld [hPrintNum6], a
-	ld a, LOW(10000)
-	ld [hPrintNum7], a
-	call .PrintDigit
-	call .AdvancePointer
-
-.four
-	xor a ; HIGH(1000 >> 8)
-	ld [hPrintNum5], a
-	ld a, HIGH(1000) ; mid
-	ld [hPrintNum6], a
-	ld a, LOW(1000)
-	ld [hPrintNum7], a
-	call .PrintDigit
-	call .AdvancePointer
-
-.three
-	xor a ; HIGH(100 >> 8)
-	ld [hPrintNum5], a
-	xor a ; HIGH(100) ; mid
-	ld [hPrintNum6], a
-	ld a, LOW(100)
-	ld [hPrintNum7], a
-	call .PrintDigit
-	call .AdvancePointer
-
-.two
-	dec e
-	jr nz, .two_skip
-	ld a, "0"
-	ld [hPrintNum1], a
-.two_skip
-
-	ld c, 0
-	ld a, [hPrintNum4]
-.mod_10
-	cp 10
-	jr c, .modded_10
-	sub 10
-	inc c
-	jr .mod_10
-.modded_10
-
-	ld b, a
-	ld a, [hPrintNum1]
-	or c
-	jr nz, .money
-	call .PrintLeadingZero
-	jr .money_leading_zero
-
-.money
-	call .PrintYen
-	push af
-	ld a, "0"
-	add c
-	ld [hl], a
-	pop af
-	ld [hPrintNum1], a
-	inc e
-	dec e
-	jr nz, .money_leading_zero
-	inc hl
-	ld [hl], "<DOT>"
-
-.money_leading_zero
-	call .AdvancePointer
-	call .PrintYen
-	ld a, "0"
-	add b
-	ld [hli], a
-
-	pop de
-	pop bc
-	ret
-
-.PrintYen: ; c5ba
-	push af
-	ld a, [hPrintNum1]
-	and a
-	jr nz, .stop
-	bit 5, d
-	jr z, .stop
-	ld a, "¥"
-	ld [hli], a
-	res 5, d
-
-.stop
-	pop af
-	ret
-
-.PrintDigit: ; c5cb (3:45cb)
-	dec e
-	jr nz, .ok
-	ld a, "0"
-	ld [hPrintNum1], a
-.ok
-	ld c, 0
-.loop
-	ld a, [hPrintNum5]
-	ld b, a
-	ld a, [hPrintNum2]
-	ld [hPrintNum8], a
-	cp b
-	jr c, .skip1
-	sub b
-	ld [hPrintNum2], a
-	ld a, [hPrintNum6]
-	ld b, a
-	ld a, [hPrintNum3]
-	ld [hPrintNum9], a
-	cp b
-	jr nc, .skip2
-	ld a, [hPrintNum2]
-	or 0
-	jr z, .skip3
-	dec a
-	ld [hPrintNum2], a
-	ld a, [hPrintNum3]
-.skip2
-	sub b
-	ld [hPrintNum3], a
-	ld a, [hPrintNum7]
-	ld b, a
-	ld a, [hPrintNum4]
-	ld [hPrintNum10], a
-	cp b
-	jr nc, .skip4
-	ld a, [hPrintNum3]
-	and a
-	jr nz, .skip5
-	ld a, [hPrintNum2]
-	and a
-	jr z, .skip6
-	dec a
-	ld [hPrintNum2], a
-	xor a
-.skip5
-	dec a
-	ld [hPrintNum3], a
-	ld a, [hPrintNum4]
-.skip4
-	sub b
-	ld [hPrintNum4], a
-	inc c
-	jr .loop
-.skip6
-	ld a, [hPrintNum9]
-	ld [hPrintNum3], a
-.skip3
-	ld a, [hPrintNum8]
-	ld [hPrintNum2], a
-.skip1
-	ld a, [hPrintNum1]
-	or c
-	jr z, .PrintLeadingZero
-	ld a, [hPrintNum1]
-	and a
-	jr nz, .done
-	bit 5, d
-	jr z, .done
-	ld a, "¥"
-	ld [hli], a
-	res 5, d
-.done
-	ld a, "0"
-	add c
-	ld [hl], a
-	ld [hPrintNum1], a
-	inc e
-	dec e
-	ret nz
-	inc hl
-	ld [hl], "<DOT>"
-	ret
-
-.PrintLeadingZero: ; c644
-; prints a leading zero unless they are turned off in the flags
-	bit 7, d ; print leading zeroes?
-	ret z
-	ld [hl], "0"
-	ret
-
-.AdvancePointer: ; c64a
-; increments the pointer unless leading zeroes are not being printed,
-; the number is left-aligned, and no nonzero digits have been printed yet
-	bit 7, d ; print leading zeroes?
-	jr nz, .inc
-	bit 6, d ; left alignment or right alignment?
-	jr z, .inc
-	ld a, [hPrintNum1]
-	and a
-	ret z
-.inc
-	inc hl
-	ret