Function engineObjectsCollect

src/engine.js:517–540

Collects all object within a given area * @param {Vector2} [pos] - Center of test area, or undefined for all objects * @param {Vector2|number} [size] - Radius of circle if float, rectangle size if Vector2 * @param {Array } [objects=engineObjects] - List of objects to check * @re

(pos, size, objects=engineObjects)

 *  @return {Array<EngineObject>} - List of collected objects
 *  @memberof Engine */
function engineObjectsCollect(pos, size, objects=engineObjects)
{
    const collectedObjects = [];
    if (!pos)
    {
        // all objects
        for (const o of objects)
            collectedObjects.push(o);
    }
    else if (size instanceof Vector2)
    {
        // bounding box test
        for (const o of objects)
            o.isOverlapping(pos, size) && collectedObjects.push(o);
    }
    else
    {
        // circle test
        const sizeSquared = size*size;
        for (const o of objects)
            pos.distanceSquared(o.pos) < sizeSquared && collectedObjects.push(o);
    }
    return collectedObjects;
}

/**
 * @callback ObjectCallbackFunction - Function that processes an object