sprite flashing on a4000/bob flashing after background loop

028.bs/background.s

@@ -110,6 +110,7 @@ RenderNextBackgroundFrame:
 	add.l	d0,a2
 	cmp.w	#$FFFF,20(a2)
 	bne	.skip
+	jsr	ClearBobs
 	move.l	#0,backgroundScrollX
 .skip:
 
@@ -135,7 +136,7 @@ RenderNextBackgroundFrame:
 	
 	endif
 
-	cmp.l	#320,backgroundScrollX
+	cmp.l	#SCREEN_WIDTH*2,backgroundScrollX
 	ble	.dontRenderBobs
 	jsr	RenderBob
 .dontRenderBobs:

028.bs/bob.s

@@ -5,6 +5,7 @@
 	xdef AddBobBaloon
 	xdef RenderBob
 	xdef ResetBobs
+	xdef ClearBobs
 	xdef RestoreBobBackgrounds
 	xdef bobBufferOffset
 	xdef EnableBobs
@@ -59,6 +60,33 @@ AddBobCloud:
 	bra	.loop
 .done:
 	rts
+
+ClearBobs:
+	move.w	#2,bobsEnabled 	; disables bob movement
+	bsr	RestoreBobBackgrounds
+	eor.l	#4,bobBufferOffset
+	move.l	backgroundOffscreen,a0
+	move.l	backgroundOnscreen,backgroundOffscreen
+	move.l	a0,backgroundOnscreen
+	bsr	RestoreBobBackgrounds
+	eor.l	#4,bobBufferOffset
+	move.l	backgroundOffscreen,a0
+	move.l	backgroundOnscreen,backgroundOffscreen
+	move.l	a0,backgroundOnscreen	
+	move.w	#1,bobsEnabled
+	lea	bob,a5
+.loop:
+	cmp.l	#0,(a5)
+	beq	.done
+	lea	BOB_LAST_DEST_ADDRESS(a5),a1
+	move.l	#0,(a1)
+	adda.l	bobBufferOffset,a1
+	move.l	#0,(a1)
+	move.l	#BOB_IDLE_X+1,BOB_X(a5)
+	adda.l	#endBob-bob,a5	
+	bra	.loop
+.done:	
+	rts
 	
 ResetBobs:
 	move.w	#2,bobsEnabled 	; disables bob movement

028.bs/game1.s

@@ -137,7 +137,8 @@ SetupBoardLoop:
 	move.w	#1,moving
 	bsr 	Update
 
-	jsr	RenderNextForegroundFrame	
+	jsr	RenderNextForegroundFrame
+	jsr	PrepareItemSpriteData			
 
 	jsr 	SwitchBackgroundBuffers2
 	move.w	#15,d5
@@ -248,7 +249,8 @@ GameLoop:
 .dontRenderPathway:
 
 	
-	jsr	PlayNextSound	
+	jsr	PlayNextSound
+	jsr	PrepareItemSpriteData
 	bra	GameLoop
 
 
@@ -462,7 +464,7 @@ RenderNextForegroundFrame:
 	add.l	#1,d3
 	cmp.l 	#FOREGROUND_PLAYAREA_HEIGHT_WORDS,d3
 	blt	.loop
-	jsr	PrepareItemSpriteData	
+	;; 	jsr	PrepareItemSpriteData	
 	rts
 
 
@@ -517,6 +519,7 @@ BigBang:
 	add.l	#1,frameCount
 	jsr	Update
 	bsr	RenderNextForegroundFrame
+	jsr	PrepareItemSpriteData			
 	jsr 	RenderNextBackgroundFrame	
 	jsr	WaitVerticalBlank
 	jsr	PlayNextSound		

028.bs/items.s

@@ -125,12 +125,6 @@ ResetItems:
 
 SwitchItemSpriteBuffers:
 	move.w	spriteX,spriteLagX	
-	move.w	#ITEM_NUM_SLOTS-1,d1
-	move.w	d1,d0
-	lea	item1,a1
-.loop:
-	adda.l	#ITEM_STRUCT_SIZE,a1		
-	dbra	d1,.loop
 	rts