phaser-scaled-drag.js

//Handle dragging from within a scaled parent
//Currently just drags from center of sprite
function scaledDrag(sprite) {
    sprite.inputEnabled = true;
    sprite.input.enableDrag();
    sprite.events.onDragUpdate.add(function (sprite, pointer, x, y) {
        var pos = sprite.game.input.getLocalPosition(sprite.parent, pointer);
        if (sprite.hitArea) {
            sprite.x = pos.x - sprite.hitArea.width/2;
            sprite.y = pos.y - sprite.hitArea.height/2;
        } else {
            sprite.x = pos.x - sprite.width/2;
            sprite.y = pos.y - sprite.height/2;
        }
    }, sprite);
    return sprite;
}