Roku Developer Program

[360tv]

so I'm working on a new thing using roScreen and drawing text on it, swapping buffers, and moving the x axis for the length [font.GetOneLineWidth(text, screen.GetWidth())] to give it a craw function along the bottom of the screen. At the same time, I have weather information along the side of the screen that updates periodically. I had everything working quite perfectly in a limited testing situation.
The problem I'm having is when I have a REALLY long string (1800 chars, or 13000px) , which is how I planned on having for a news craw, it'll lockup after a while, or somehow blank out other text I had rendered on the screen.

		else if (msg = invalid)
			if (screensize = 1)
				if (weathertimer.TotalSeconds() <= 30)
					for each obj in weatherxml.overlay
						screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
						'print weathertimer.totalseconds()
					next
				else if (weathertimer.totalseconds() > 30)
				print "Weather marK"
					for each obj in weatherxml.overlay
						screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
					next
					weatherxml.clear()
					weathermark = 0
					weathertimer.mark()
				end if
				
				if (newstimer.totalseconds() >= 2) and (newstimer.totalseconds() <= 6)
						for each obj in newsxml.overlay
							newscount = strtoi(obj.count.gettext())
							screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
						next
				else if (newstimer.totalseconds() >= 6) and (Xcrawl < newslenght +200 ) ' newslenght is font.GetOneLineWidth.
					xcrawl = xcrawl + 1
					print xcrawl
					for each obj in newsxml.overlay
						newscount = strtoi(obj.count.gettext())
						screen.DrawText(obj.text.gettext() , strtoi(obj.X.gettext()) - xcrawl , strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
					next
				else if (Xcrawl >= (newslenght  +200 )) 
					print xcrawl
					print "News Mark"
					newsxml.clear()
					newstimer.mark()
					newsmark = 0
					xcrawl = 0
				end if
				
				screen.Clear(&h00000000)
				screen.SwapBuffers()

this code works perfectly with a craw of about 150 char with the weather on screen coming to about 640 char. without the weather data on screen the craw can get to about 800 - 1000 char but will lock up after that. my Roku box also is slow to respond to input at that point.

[360tv]

So, I dunno... I moved screen.Clear(&h00000000) to the top of the loop and it's working.

else if (msg = invalid)
         if (screensize = 1)
            if (weathertimer.TotalSeconds() <= 30)
               for each obj in weatherxml.overlay
                  screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
                  'print weathertimer.totalseconds()
               next
            else if (weathertimer.totalseconds() > 30)
            print "Weather marK"
               for each obj in weatherxml.overlay
                  screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
               next
               weatherxml.clear()
               weathermark = 0
               weathertimer.mark()
            end if
            
            if (newstimer.totalseconds() >= 2) and (newstimer.totalseconds() <= 6)
                  for each obj in newsxml.overlay
                     newscount = strtoi(obj.count.gettext())
                     screen.DrawText(obj.text.gettext(), strtoi(obj.X.gettext()), strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
                  next
            else if (newstimer.totalseconds() >= 6) and (Xcrawl < newslenght +200 ) ' newslenght is font.GetOneLineWidth.
               xcrawl = xcrawl + 1
               print xcrawl
               for each obj in newsxml.overlay
                  newscount = strtoi(obj.count.gettext())
                  screen.DrawText(obj.text.gettext() , strtoi(obj.X.gettext()) - xcrawl , strtoi(obj.Y.gettext()), &hFFFFFFFF, font)
               next
            else if (Xcrawl >= (newslenght  +200 )) 
               print xcrawl
               print "News Mark"
               newsxml.clear()
               newstimer.mark()
               newsmark = 0
               xcrawl = 0
            end if
            
            screen.Clear(&h00000000)
            screen.SwapBuffers()

[RokuJoel]

if screen.clear() is the last thing before you call swapbuffers in each iteration in your loop, I'm surprised you were seeing anything at all on the screen, since that would be the last draw operation, unless you are calling swapbuffers somewhere else in the loop as well.

- Joel

[360tv]

I might have been. I've just started using orScreen a week ago. So I'm learning how to use it.