mist: fix some irregularities when entering/leaving worlds

sometimes would take two presses to enter area (we weren't tracking
IS_SPECIAL if not visible)

also weren't masking high bits off direction when turning left/right

mist/draw_pointer.s

@@ -5,9 +5,6 @@
 
 draw_pointer:
 
-	lda	CURSOR_VISIBLE
-	bne	really_draw_pointer
-	jmp	no_draw_pointer
 
 really_draw_pointer:
 
@@ -55,6 +52,13 @@ finger_grab:
 	lda	#1
 	sta	IN_SPECIAL
 
+	lda	CURSOR_VISIBLE		; if not visible skip
+	bne	really_draw_grab
+
+	rts
+
+really_draw_grab:
+
 	lda	DIRECTION
 	and	#DIRECTION_ONLY_POINT
 	bne	special_but_point
@@ -69,6 +73,12 @@ special_but_point:
 
 finger_not_special:
 
+	lda	CURSOR_VISIBLE		; if not visible skip
+	bne	really_not_special
+
+	rts
+really_not_special:
+
 	; check for left/right
 
 	lda	CURSOR_X

mist/keyboard.s

@@ -221,6 +221,7 @@ cant_go_forward:
 turn_left:
 
 	lda	DIRECTION
+	and	#$f
 	cmp	#DIRECTION_N
 	beq	go_west
 	cmp	#DIRECTION_W
@@ -234,6 +235,7 @@ turn_left:
 	;===========================
 turn_right:
 	lda	DIRECTION
+	and	#$f
 	cmp	#DIRECTION_N
 	beq	go_east
 	cmp	#DIRECTION_E