Method update

plugins/uiSystem.js:1328–1360

()

        this.interactive = true;
    }
    update()
    {
        super.update();
        if (!this.interactive)
            return;

        const oldValue = this.value;
        if (this.isActiveObject())
        {
            // handle horizontal or vertical slider
            const isHorizontal = this.size.x > this.size.y;
            const handleSize = isHorizontal ? this.size.y : this.size.x;
            const barSize = isHorizontal ? this.size.x : this.size.y;
            const centerPos = isHorizontal ? this.pos.x : this.pos.y;

            // check if value changed
            const handleWidth = barSize - handleSize;
            const p1 = centerPos - handleWidth/2;
            const p2 = centerPos + handleWidth/2;
            const p = uiSystem.screenToNative(mousePosScreen);
            this.value = isHorizontal ? 
                percent(p.x, p1, p2) :
                percent(p.y, p2, p1);
        }
        else if (this.isNavigationObject())
        {
            // gamepad/keyboard navigation adjustment
            const direction = uiSystem.getNavigationOtherDirection();
            if (!uiSystem.navigationTimer.active())
                this.value = clamp(this.value + direction*.01);
        }
        this.value === oldValue || this.onChange();
    }
    render()
    {
        super.render();