void kvideo_putline(uint16 x1, uint16 y1, uint16 x2, uint16 y2, char c, uint8 col)
{
	if (c == '\0') return;
	uint16 *vptr = (uint16*)VGA_TEXTCOLOR;
	unsigned short lc = (col << 8) | c;
	unsigned int i = 0, j = 0;
	if (y1 == y2) //horizontal
	{
		if (x1 > x2) {
			for (i = x2; i < x1; i++)
				*(vptr + i + (y1 * KVIDEO_W)) = lc;
		} else if (x2 > x1) {
			for (i = x1; i < x2; i++)
				*(vptr + i + (y1 * KVIDEO_W)) = lc;
		} else if (x1 == x2) {
			*(vptr + x1 + (y1 * KVIDEO_W)) = lc;
		}
	}
	else if (x1 == x2) //vertical
	{
		if (y1 > y2) {
			for (i = y2; i < y1; i++)
				*(vptr + x1 + (i * KVIDEO_W)) = lc;
		} else if (y2 > y1) {
			for (i = y1; i < y2; i++)
				*(vptr + x1 + (i * KVIDEO_W)) = lc;
		} else if (y1 == y2) {
			*(vptr + x1 + (y1 * KVIDEO_W)) = lc;
		}
	}
	else //cant get off that easy...
	{
		short deltax = x2 - x1;
		short deltay = y2 - y1;
		short deltaxabs = abs_16(deltax);
		short deltayabs = abs_16(deltay);
		short sgndeltax = sgn_16(deltax);
		short sgndeltay = sgn_16(deltay);
		short x = deltayabs >> 1;
		short y = deltaxabs >> 1;
		short drawx = x1, drawy = y1;
		*(vptr + drawx + (drawy * KVIDEO_W)) = lc;
		int n = 0;
		if (deltaxabs >= deltayabs) {
			for (n = 0; n < deltaxabs; n++) {
				y += deltayabs;
				if (y >= deltaxabs) {
					y -= deltaxabs;
					drawy += sgndeltay;
				}
				drawx += sgndeltax;
				*(vptr + drawx + (drawy * KVIDEO_W)) = lc;
			}
		} else {
			for (n = 0; n < deltayabs; n++) {
				x += deltaxabs;
				if (x >= deltayabs) {
					x -= deltayabs;
					drawx += sgndeltax;
				}
				drawy += sgndeltay;
				*(vptr + drawx + (drawy * KVIDEO_W)) = lc;
			}
		}
	}
}