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// xy are of the victim
int Scene::getSEE(const int x, const int y, const ChessPiece *const attacker) const
{
	const ChessPiece *const victim = b.getAt(x, y);

	const PlayerColor c = attacker -> getColor();

	// bit 0...15: if set, then a white piece can walk over and/or attack this field, 16...31 black
	const uint32_t bits = ss.back().tcs.cells[y][x];

	int see_val = victim -> getEvalVal();
	int trophy_val = attacker -> getEvalVal();

	PlayerColor sc = opponentColor(c);
	int so[] = { 0, 16 }; // where to start to search in the bit pattern. so[0] is for white
	constexpr int soe[] = { 16, 32 }; // where to stop searching. soe[0] is for white

	for&#40;; so&#91;sc&#93; < soe&#91;sc&#93;;) &#123;
		// find a 1 bit
		while&#40;&#40;bits & &#40;1 << so&#91;sc&#93;)) == 0&#41; &#123;
			// if end of pattern, stop searching
			if (++so&#91;sc&#93; == soe&#91;sc&#93;)
				break;
		&#125;

		if &#40;so&#91;sc&#93; >= soe&#91;sc&#93;)
			break;

		if &#40;sc == c&#41;
			see_val += trophy_val;
		else
			see_val -= trophy_val;

		// get eval val. bit number is an index in pieces&#91;color&#93;&#91;index&#93; pointing to the
		// piece.
		trophy_val = sc == WHITE ? pieces&#91;sc&#93;&#91;so&#91;sc&#93;&#93; -> getEvalVal&#40;) &#58; pieces&#91;sc&#93;&#91;so&#91;sc&#93; - 16&#93; -> getEvalVal&#40;);

		// on to the next bit!
		so&#91;sc&#93;++;

		sc = opponentColor&#40;sc&#41;;
	&#125;

	return see_val;
&#125;