devkitPro

Why do you need to clear? Just load the new background over the old one.

The console refers to a text console. It is where the text from printf is displayed. Without this call it if not going to display stdout. The parameters to the function describe the screen resolution and the region of the screen to print to. In particular the 20, 20 values set the start x and y valu...

your code example does not reflect the question you are asking, so it is a little hard to answer. in the question you asked the variable should change to 7 since you did not indicate that a new local variable was created. In the code example you provided you did create a new local variable. That bei...

You need to read up on "scope" and local variables in C. The { character creates a new scope. Variables created at in a scope go away when the matching } character is reached. These variables are called local variables. I think you will find learning C/C++ by forum posting to be very frust...

if they are a static size then you can also make them global.

the stack is 16k on the ds - you have overflowed the stack. your local declarations are too big - you will need to either make the global or dynamically allocate them (malloc or new). both will put the objects in main memory instead of the stack. as a note - I choose to ignore if you move new_anim i...

Emulators are not 100% accurate. What are you trying to prove with this example? Crashing an emulator is not particularly useful/meaningful in itself.

dmaCopy reads directly from main memory bypassing the data cache. you need to make sure that you flush the data cache before using dmaCopy. You can call DC_FlushAll to flush the entire data cache at once, or you can use DC_FlushRange to flush a specific region. dmaCopy is the fastest method to copy ...

I am not really a grit expert, but should do it

GL_TEXTURE_COLOR0_TRANSPARENT indicates that paletted textures that specify index 0 in the image data should be transparent for that pixel - in other words it ignores the color value at index 0 in the palette and does not draw the pixels that reference this palette index.