Function isOverlapping

src/engineMath.js:213–221

Returns true if two axis aligned bounding boxes are overlapping * this can be used for simple collision detection between objects * @param {Vector2} posA - Center of box A * @param {Vector2} sizeA - Size of box A * @param {Vector2} posB - Center of box B * @param {Vector2} [sizeB=vec2()] -

(posA, sizeA, posB, sizeB=vec2())

 *  @return {boolean} - True if overlapping
 *  @memberof Math */
function isOverlapping(posA, sizeA, posB, sizeB=vec2())
{
    const dx = (posA.x - posB.x)*2;
    const dy = (posA.y - posB.y)*2;
    const sx = sizeA.x + sizeB.x;
    const sy = sizeA.y + sizeB.y;
    // symmetric so isOverlapping(A,B) === isOverlapping(B,A) at touching edges
    return abs(dx) < sx && abs(dy) < sy;
}

/** Returns true if a line segment is intersecting an axis aligned box
 *  @param {Vector2} start - Start of raycast