Bresenham's line algorithm in Rust via ChatGPT

line.rs

struct Point {
    x: i32,
    y: i32,
}

// via ChatGPT4  (!!!)
fn teleport(p1: Point, p2: Point) -> Vec<Point> {
    let mut points = Vec::new();
    let mut x1 = p1.x;
    let mut y1 = p1.y;
    let x2 = p2.x;
    let y2 = p2.y;
    
    let dx = (x2 - x1).abs();
    let dy = (y2 - y1).abs();
    
    let mut sx = 0;
    let mut sy = 0;
    
    if x1 < x2 {
        sx = 1;
    } else {
        sx = -1;
    }
    
    if y1 < y2 {
        sy = 1;
    } else {
        sy = -1;
    }
    
    let mut err = dx - dy;
    
    loop {
        points.push(Point { x: x1, y: y1 });
        
        if x1 == x2 && y1 == y2 {
            break;
        }
        
        let e2 = 2 * err;
        
        if e2 > -dy {
            err -= dy;
            x1 += sx;
        }
        
        if e2 < dx {
            err += dx;
            y1 += sy;
        }
    }
    
    points
}