split code out of main.asm

engine/overworld/clear_variables.asm

@@ -0,0 +1,20 @@
+ClearVariablesOnEnterMap:
+	ld a, SCREEN_HEIGHT_PIXELS
+	ld [hWY], a
+	ld [rWY], a
+	xor a
+	ld [H_AUTOBGTRANSFERENABLED], a
+	ld [wStepCounter], a
+	ld [wLoneAttackNo], a
+	ld [hJoyPressed], a
+	ld [hJoyReleased], a
+	ld [hJoyHeld], a
+	ld [wActionResultOrTookBattleTurn], a
+	ld [wUnusedD5A3], a
+	ld hl, wCardKeyDoorY
+	ld [hli], a
+	ld [hl], a
+	ld hl, wWhichTrade
+	ld bc, wStandingOnWarpPadOrHole - wWhichTrade
+	call FillMemory
+	ret