Think of it like this:
The "World" is viewed through the "Screen" just like something filmed by a camera. You can position things in the world and change which part of the world you look at using "setViewOffset".
You can find out whether a world co-ordinate is within the screen using the "worldToScreen" commands. If a world co-ordinate passed through these commands returns as negative or higher than the screen size then it is not on the screen.
Similarly you can fix sprites to the screen like the graphics on news programs on TV using "fixSpriteToScreen".
Quote: "If my assumptions are correct then, you can change the view of the screen by moving it from its origin 0,0 to bring into view any area outside of the screen (the world) to display sprites that were positioned off screen..
Is it that simplistic?
"
Yes, pretty much!
Experiment. Let me know if you have any more questions. You can post them here if you like.
Also I will be posting further tutorials here:
Free resources from ADG
