1 files changed, 45 insertions, 0 deletions
diff --git a/home/print_text.asm b/home/print_text.asm
new file mode 100644
index 00000000..049ddfb4
--- /dev/null
+++ b/home/print_text.asm
@@ -0,0 +1,45 @@
+; This function is used to wait a short period after printing a letter to the
+; screen unless the player presses the A/B button or the delay is turned off
+; through the [wd730] or [wLetterPrintingDelayFlags] flags.
+PrintLetterDelay::
+	ld a, [wd730]
+	bit 6, a
+	ret nz
+	ld a, [wLetterPrintingDelayFlags]
+	bit 1, a
+	ret z
+	push hl
+	push de
+	push bc
+	ld a, [wLetterPrintingDelayFlags]
+	bit 0, a
+	jr z, .waitOneFrame
+	ld a, [wOptions]
+	and $f
+	ldh [hFrameCounter], a
+	jr .checkButtons
+.waitOneFrame
+	ld a, 1
+	ldh [hFrameCounter], a
+.checkButtons
+	call Joypad
+	ldh a, [hJoyHeld]
+.checkAButton
+	bit 0, a ; is the A button pressed?
+	jr z, .checkBButton
+	jr .endWait
+.checkBButton
+	bit 1, a ; is the B button pressed?
+	jr z, .buttonsNotPressed
+.endWait
+	call DelayFrame
+	jr .done
+.buttonsNotPressed ; if neither A nor B is pressed
+	ldh a, [hFrameCounter]
+	and a
+	jr nz, .checkButtons
+.done
+	pop bc
+	pop de
+	pop hl
+	ret