Background image?

[hàrléyg²]

how would i go about displaying a png as the background inside my application? meaning everything else is on top, including other images / text.
edit: in C, not lua

[Flatnick]

Have a look at the 2 sticky posts. I think there should be your answer.

[dbeyer3069]

Originally Posted by harleyg

how would i go about displaying a png as the background inside my application? meaning everything else is on top, including other images / text.
edit: in C, not lua

In the PSP, there is used what's called "double buffering". You can display images a number of different ways.

You could display a background image, then flip the screen to the other buffer, draw on that and flip back to the original, redrawing the background again. This makes it appear as though one image is infront of the other. Games where figures, characters or other objects are animated work this way.

You could also draw the background image and then use a screen text function to add the text to either the current screen's buffer... or render it directly to the background image.

Either way, when done rendering you have to flip the screen and start all over. Nothing shows up on the screen until the screen is flipped. Think of it like someone drawing on a piece of paper infront of you. Until they flip it over and show you what's there, you can't see it. Works the same way.

Read the "Lesson #1", etc. tutorials to get a better handle on displaying things. It uses the graphics.c library if I remember correctly. It's pretty easy to use.

The idea of double-buffering is the toughest part to get used to. Once you get that idea in your mind, the rest isn't too bad.

David Beyer