#include "hexagon.h"

#include "ctap.h"

void dcheck(int x1, int y1, int x2, int y2, int expect) {
	int dist;
	struct HL_hex from, to;

	from.x = x1;
	from.y = y1;
	to.x = x2;
	to.y = y2;

	dist = HL_distance(from,to);
	is_int(expect, dist,
		"distance from (%02d, %02d) to (%02d, %02d)",
		x1, y1, x2, y2);
}

int main(void) {
	plan(8);

	dcheck(1,1,2,1,1);
	dcheck(1,1,2,2,2);
	dcheck(2,2,2,1,1);
	dcheck(1,1,2,3,3);
	dcheck(3,3,3,3,0);
	dcheck(0,0,1,1,1);
	dcheck(-1,-1,1,2,4);
	dcheck(-1,-1,-1,-2,1);

	return 0;
}