Here's the result of our work.
Looking good. Let's fix that overlapping blank cell problem.
Make this change to the #renderLaser instance method on BlankCellRenderer.
renderLaser
self cell isOff ifTrue: [^self].
(self cell activeSegments at: #north) ifTrue: [self renderLaserVertical].
(self cell activeSegments at: #west) ifTrue: [self renderLaserHorizontal].
((self cell activeSegments at: #north) and: [self cell activeSegments at: #west]) ifTrue: [
self renderLaserVerticalCenter]
Our results...
Beautiful. Save your work as version 10.
