climb: avoid crash when you get too high

games/peasant_mini/cliff/TODO

@@ -2,9 +2,8 @@ Change priority code to work on three-wide sprites
 Change draw transparency code to work on three-wide sprites
 Erase flame even when not moving?  That is tricky as would need to
 	redraw head as well :(  maybe just erase part above the head?
-Make it so you can't go down to previous level
-
-Above level2 don't crash, just show bg#2 again
+add collision detection for boulders
+adjust boulder fall frequency to match original
 
 For Coach Z version:
 	Speed up rocks/change spawn rate above level2

games/peasant_mini/cliff/climb.s

@@ -501,6 +501,15 @@ load_graphics:
 	;========================
 
 	ldx	MAP_LOCATION
+
+	cpx	#2
+	bcc	priority_normal
+
+	ldx	#2
+
+priority_normal:
+
+
 	lda     priority_data_l,X
 	sta     ZX0_src
 	lda     priority_data_h,X
@@ -524,6 +533,17 @@ load_graphics:
 	;===========================
 
 	ldx	MAP_LOCATION
+
+	; extra for Z variant
+	; repeat level 2 over and over
+
+	cpx	#2
+	bcc	bg_normal
+
+	ldx	#2
+
+bg_normal:
+
 	lda	bg_data_l,X
 	sta	ZX0_src
 	lda	bg_data_h,X