From 5f3a76f4f28a78904fde8b88ea191d3097e0ab5b Mon Sep 17 00:00:00 2001
From: Jeremy Rand <jeremy@rand-family.com>
Date: Wed, 9 Aug 2017 22:19:51 -0400
Subject: [PATCH] Fix problem where sometimes the right cap of a floor is not
 correctly cleared as it scrolls off the screen.  The problem is that we need
 to delay moving the grid along to the next floor until after the old base
 grid has been fully cleared.

---
 colourgo/game.s | 1 +
 1 file changed, 1 insertion(+)

diff --git a/colourgo/game.s b/colourgo/game.s
index 5932adb..94e2226 100644
--- a/colourgo/game.s
+++ b/colourgo/game.s
@@ -1004,6 +1004,7 @@ yPos:    .BYTE $00
     lda gridXPos
     cmp (LEVELADDR),y
     bcc @return
+    beq @return
 
 ; At this point, we know that this grid is not visible
 ; Check to see if the start of the next grid is left justified