Calculating degrees between 2 points with inverse Y axis

Question

I\'m creating a simple 2D game in javascript/canvas. I need to figure out the angle of a certain object relative to my position.

So: say I\'m at (10,10) and the object i

Answer 1

In layman's terms:

function pointDirection(x1, y1, x2, y2) {
    return Math.atan2(y2 - y1, x2 - x1) * 180 / Math.PI;
}