Finds the distance between a point and a line

point_distance_line.gml

/// @desc Finds the minimum distance between a point and a 2D line.
/// @param x {Real} The X position of the point.
/// @param y {Real} The Y position of the point.
/// @param u1 {Real} The first X position of the line.
/// @param w1 {Real} The first Y position of the line.
/// @param u2 {Real} The second X position of the line.
/// @param w2 {Real} The second Y position of the line.
var qx = argument0;
var qy = argument1;
var px = argument2;
var py = argument3;
var ux = argument4 - px;
var uy = argument5 - py;
var nx = uy;
var ny = -ux;
return (dot_product(nx, ny, px, py) - dot_product(nx, ny, qx, qy)) /
        dot_product(nx, ny, nx, ny);