Pull a lot of engine out of main.asm

engine/items/tmhm.asm

@@ -0,0 +1,26 @@
+; checks if the mon in wWhichPokemon already knows the move in $d0e0
+CheckIfMoveIsKnown: ; 2fe18 (b:7e18)
+	ld a, [wWhichPokemon]
+	ld hl, W_PARTYMON1_MOVE1
+	ld bc, $2c
+	call AddNTimes
+	ld a, [$d0e0]
+	ld b, a
+	ld c, $4 ; nubmer of moves
+.loop
+	ld a, [hli]
+	cp b
+	jr z, .alreadyKnown ; found a match
+	dec c
+	jr nz, .loop
+	and a
+	ret
+.alreadyKnown
+	ld hl, AlreadyKnowsText
+	call PrintText
+	scf
+	ret
+
+AlreadyKnowsText: ; 2fe3b (b:7e3b)
+	TX_FAR _AlreadyKnowsText
+	db "@"