Regarding hex error code instead of base 10 - I suspect it may have been due to using C for a lot of low level coding. If you're dealing with bit fields, then hex representation is nice because it's more compact than binary, but easier to convert to binary than base 10.
So, I have some tails (his position and texture) and I want to make effect like smooth transition (seems like animation) of this tiles, so, when I'm zooming I want to new tiles didn't load with a delay and then abruptly appeared but smoothly, so I think to add them opacity and change it as the ti...