#include "blocks.h"
#include <string.h>

Frame* Block::getFrame( int index ) { return index >= 0 && index < 64 ? &frames[index] : 0; }

IdentificationFrame* DirectoryBlock::IDFrame() { return (IdentificationFrame*)&frames[0]; }
DirectoryFrame* DirectoryBlock::Directory( int index ) { return index < 15 && index >= 0 ? (DirectoryFrame*)&frames[index + 1] : 0; }
void DirectoryBlock::Directory( int index, DirectoryFrame *frame ) { memcpy( &frames[index], frame, sizeof( DirectoryFrame ) ); }
Frame* DirectoryBlock::Reserved( int index ) { return index < 20 && index >= 0 ? &frames[index + 16] : 0; }
Frame* DirectoryBlock::Unused( int index ) { return index < 27 && index >= 0 ? &frames[index + 36] : 0; }
Frame* DirectoryBlock::WriteTest() { return &frames[63]; }
int DirectoryBlock::nextOpenBlock() {
	for( int i = 0; i < 15; i++ ) {
		int type = Directory( i )->blockType();
		if( type >= 160 && type <= 163 ) { return i + 1; }
	}
	return 0;
}
SaveHeaderFrame* InitialBlock::Header() { return (SaveHeaderFrame*)&frames[0]; }
Icon* InitialBlock::getIcon( int index ) {
	//return index < 3 && index >= 0 ? &frames[index + 1] : 0;
	SaveHeaderFrame *header = Header();
	IconFrame *frame = (IconFrame*)&frames[index + 1];
	Icon *icon = new Icon();
	for( int y = 0; y < 16; y++ ) {
		icon->paletteColor( y, header->paletteColor( y ) );
		for( int x = 0; x < 16; x++ ) {
			icon->pixel( x, y, frame->colorAt( x, y ) );
		}
	}
	return icon;
}