Changes

For the most part, you will simply leave the parameters as 0, 0 for simplicity’s sake, although it’s important to understand exactly what they are. The first parameter determines how far along the x axis the back buffer should start drawing to the front and the second relates to where the frame starts being printed on the y axis, this may be a negative value. Now you may be wondering why you would do this, an example, (just an example mind) is in say a side scroller, while there are lots of bombs dropping on the map, the screen shakes wildly around to give a better cinematic effect from the bombs exploding than just the usual still screen. At this point you would generate an image on the back buffer slightly larger than the screen and plug a formula into both of those parameters that would change the offset to make it look like a shuddering screen. another example is simply moving a menu from one side to the other like, say the iPhone, and you could fade it while it goes, then the next screen could slide in and fade in. These are just random babblings by me, feel free to use this function how you want, but most of the time you will call it as 0, 0.

For the most part, you will simply leave the parameters as 0, 0 for simplicity’s sake, although it’s important to understand exactly what they are. The first parameter determines how far along the x axis the back buffer should start drawing to the front and the second relates to where the frame starts being printed on the y axis, this may be a negative value. Now you may be wondering why you would do this, an example, (just an example mind) is in say a side scroller, while there are lots of bombs dropping on the map, the screen shakes wildly around to give a better cinematic effect from the bombs exploding than just the usual still screen. At this point you would generate an image on the back buffer slightly larger than the screen and plug a formula into both of those parameters that would change the offset to make it look like a shuddering screen. another example is simply moving a menu from one side to the other like, say the iPhone, and you could fade it while it goes, then the next screen could slide in and fade in. These are just random babblings by me, feel free to use this function how you want, but most of the time you will call it as 0, 0.

Now to apply what you have learned about the LayerManaer class to this function. What happens when you call this function, is that the array acts sort of like a z buffer, the object at element 0 will be printed first, and in the case of our list, this is quad, this servers as a background, so it would make sense to print it at the back, next, element 1 is printed. This is out sprite object. Because of the way that this draws on the back buffer, every pixel that sprite is on will completely overwrite the ones that were behind it, in this case, where ever sprite is. But that’s supposed to happen so don’t worry, it will update every frame so your quad/background or whatever will remain intact waiting to be rendered next time. The Draw() function iterates through your manager until it has printed all of the images onto the buffer and created its nice image. That finishes all the calls for Manager in this application so then Flush() finishes the rendering and prints everything to the screen for you to admire.

Now to apply what you have learned about the LayerManager class to this function. What happens when you call this function, is that the array acts sort of like a z buffer, the object at element 0 will be printed first, and in the case of our list, this is quad, this servers as a background, so it would make sense to print it at the back, next, element 1 is printed. This is out sprite object. Because of the way that this draws on the back buffer, every pixel that sprite is on will completely overwrite the ones that were behind it, in this case, where ever sprite is. But that’s supposed to happen so don’t worry, it will update every frame so your quad/background or whatever will remain intact waiting to be rendered next time. The Draw() function iterates through your manager until it has printed all of the images onto the buffer and created its nice image. That finishes all the calls for Manager in this application so then Flush() finishes the rendering and prints everything to the screen for you to admire.

I would still like to explain the other functions in the LayerManager class that weren’t used in spritetest. The first of these functions is Remove().

I would still like to explain the other functions in the LayerManager class that weren’t used in spritetest. The first of these functions is Remove().

   layer A layer that is in the list.  

   layer A layer that is in the list.  

Say we have out manager set up like this:

Say we have our manager set up like this:

             elements

             elements