Fix bounds clipping

cmd/view-map/main.go

@@ -111,9 +111,12 @@ func (e *env) Draw(screen *ebiten.Image) error {
 	sw, sh := screen.Size()
 
 	topLeft := pixToCell(e.state.origin)
-	topLeft.X -= 1 // Otherwise we miss half a cell on alternate rows on the left
+	topLeft.X -= 5 // Ensure we paint to every visible section of the screeen.
+	topLeft.X -= 5 // FIXME: haxxx
 
 	bottomRight := pixToCell(image.Pt(e.state.origin.X+sw, e.state.origin.Y+sh))
+	bottomRight.X += 5
+	bottomRight.Y += 5
 
 	// X+Y is constant for all tiles in a column
 	// X-Y is constant for all tiles in a row