void calc_sprites(int steps)
{
if ( spGetInput()->button[SP_BUTTON_A] )
{
spGetInput()->button[SP_BUTTON_A] = 0;
sprites_z = 1-sprites_z;
}
spUpdateSprite( sprite, steps );
}
int calc_function( Uint32 steps )
{
//update rotation counter
rotation += steps * 32;
//if "Start" (or "Menu" for Wiz or "Home" for Caanoo or "Return" at the P) is
//pressed: exit
if ( spGetInput()->button[SP_BUTTON_START] )
return 1;
//Update the sprite (next picture)
spUpdateSprite( sprite, steps );
//rotozoom the sprite (without rotozoom it's faster):
sprite->zoomX = spSin( rotation * 8 ) / 2 + ( 3 << SP_ACCURACY - 1 );
sprite->zoomY = spCos( rotation * 6 ) / 2 + ( 3 << SP_ACCURACY - 1 );
sprite->rotation = rotation * 4;
return 0;
}
void calc_target(int steps)
{
spUpdateSprite( target_sprite, steps );
}
