1 files changed, 53 insertions, 0 deletions
diff --git a/engine/pokemon/correct_nick_errors.asm b/engine/pokemon/correct_nick_errors.asm
new file mode 100644
index 00000000..c7b6ff39
--- /dev/null
+++ b/engine/pokemon/correct_nick_errors.asm
@@ -0,0 +1,53 @@
+CorrectNickErrors:: ; 677e (1:677e)
+	push bc
+	push de
+	ld b, MON_NAME_LENGTH
+.checkchar
+	ld a, [de]
+	cp "@"
+	jr z, .done
+	ld hl, .textcommands
+	dec hl
+.loop
+	inc hl
+	ld a, [hl]
+	cp $ff
+	jr z, .next
+	ld a, [de]
+	cp [hl]
+	inc hl
+	jr c, .loop
+	cp [hl]
+	jr nc, .loop
+	ld a, "?"
+	ld [de], a
+	jr .loop
+
+.next
+	inc de
+	dec b
+	jr nz, .checkchar
+	pop de
+	push de
+	ld a, "?"
+	ld [de], a
+	inc de
+	ld a, "@"
+	ld [de], a
+.done
+	pop de
+	pop bc
+	ret
+
+.textcommands
+; table defining which characters are actually text commands
+; format:
+	;      ≥           <
+	db "<START>",  $04       + 1
+	db "<PLAY_G>", $18       + 1
+	db $1d,        "%"       + 1
+	db $35,        "<GREEN>" + 1
+	db "<ENEMY>",  "<ENEMY>" + 1
+	db $49,        "<TM>"    + 1
+	db "<ROCKET>", "┘"       + 1
+	db -1 ; end
+\ No newline at end of file