When we learn how to to deal with Director objects, our aim will be to build a structure, that can execute animations.
For this purpose, three working classes were established.
Sprite – information about position, size and reference to cast data.
Frame – set of sprites and information about tempo, delay, palette.
Score – just set of frames.
One of the main resources of the Director is DIB pictures, we will often meet it in our bookshelf animations. In map of objects DIB has FourCC ‘DIB ‘ and color palette is ‘CLUT‘.
We have faced with example with 4bpp pictures (16 colours). Decoding colour table had been no big problem, but at the decoding picture stage was seen absence of 4bpp decoder.