).height,
          slipperOffsetX = slipper.getBoundingClientRect().width - slipperWidth, // slipper-body offsets relative to the whole svg
          slipperOffsetY =
            slipper.getBoundingClientRect().height - slipperHeight;

        // Track mouse to move the deadly weapon around
        viewBox.addEventListener("mousemove", mouseMoveHandler);
        // Click behaviour
        viewBox.addEventListener("mousedown", mouseDownHandler);
        viewBox.addEventListener("mouseup", mouseUpHandler);

