allowing a person to click and drag an icon android studio

In the Event Graph, add the OnMouseButtonDown and OnDragDetected overrides. This step enables us to determine if the player is dragging the Left Mouse Button. Then set the Percent to 1.0 so the progress bar is filled and changes color.Ģ.1 - Scripting the On Mouse Button Down Function You can also stylize the Progress Bar yourself by setting the preview to Desired on Screen. In the Details Panel for the Size Box, set the Width and Height Override to 500x50.

Open the HealthBar Widget Blueprint, and delete the Canvas Panel in the Hierarchy window.Īdd a Size Box and add a Progress Bar to the box. We also use the DetectDragIfPressed node to determine if the player is dragging with a specified key. In this step, we determine when the Left Mouse Button is pressed and store the location where it was pressed in screen space. With our project setup done, next we will start working on the HealthBar Widget Blueprint which is the piece of UI that we want to be draggable. Check the boxes for Instance Editable and Expose on Spawn.Ĭompile and Save the DragWidget Blueprint. Open the Drag Widget Blueprint, and create a User Widget variable called WidgetReference. This offsets the location from where we start dragging and dropping the widget.Ĭompile and Save the WidgetDrag Blueprint. Check the boxes for Instance Editable and Expose on Spawn. This will be used to hold the UMG Widget that we want to drag around on screen.Ĭreate a Vector 2D variable called DragOffset. Open the WidgetDrag Blueprint, and create a User Widget variable called WidgetReference. This specialized Blueprint Class enables us to pass through information as part of our drag and drop action. Right-click in the Content Browser, create a new Blueprint Class for the DragDropOperation class, and call it WidgetDrag. In the Content Browser, create three Widget Blueprints called: DragWidget, HealthBar, and HUD.

For this how-to guide, we are using the Blueprint Third Person template project.

Allowing a person to click and drag an icon android studio