Comments

• calli

  March 8

  More information on how it works from the Unity side:

  https://discussions.unity.com/t/clickable-link-within-a-text/795397/36
  https://www.spongehammer.com/link-on-the-ui-using-textmesh-pro-in-unity/
• ChrisIceBox

  March 9

  A custom script is needed to process what happens when the link is clicked. The link tag itself can be used - but what exactly do you want it to do once clicked?
• calli

  March 9

  Thanks for the reply! I'd like AC to treat it like a Unity UI button so I can trigger action lists by clicking it.
• ChrisIceBox

  March 10

  AC won't treat the link as anything - it'll be processed by whatever means you input it (speech, variable, menu manager etc), and should display correctly, but what happens when you click it is still reliant on a custom script.

  Such a script needs to hold a record of ActionLists paired with the associated "ID" of the link it should run for. Something like:

  using UnityEngine;
  using AC;
  using TMPro;
  
  public class ActionListLinks : MonoBehaviour, IPointerClickHandler
  {
  
      public TMP_Text text;
      public ActionListIDs[] actionListIDs = new ActionListIDs[0];
  
      public void OnPointerClick(PointerEventData eventData)
      {
          var linkIndex = TMP_TextUtilities.FindIntersectingLink(text, Input.mousePosition, null);
          var linkId = text.textInfo.linkInfo[linkIndex].GetLinkID();
  
          foreach (var actionListID in actionListIDs)
          {
              if (actionListID.id == linkId)
              {
                  actionListID.actionList.Interact ();
                  return;
              }
          }
      }
  
      [System.Serializable]
      public class ActionListIDs
      {
          public string id;
          public ActionListAsset actionList;
      }
  
  }
  
• calli

  March 10

  Amazing, thanks it works great!

  If anyone else needs to do something similar, you also need to add:

  using UnityEngine.EventSystems;

  Make sure your Unity UI is Screen Space - Overlay
  And that your Textmesh pro element has Raycast enabled (in extra settings)
• calli

  March 10

  Sorry, I have one more question: why doesn't it work when the UI is set to Screen Space - Camera?

  I've tried playing with the UI's Z axis and different settings but it looks like clicks on the tags aren't registered. Clicks on a standard button linking to the same action list work fine.
• ChrisIceBox

  March 11

  I'm not sure - but AC won't be in charge of registering the link clicks, only what happens afterwards. It may be a Unity UI / TMPro issue.

  Screen Space - Camera requires a Render Camera to be assigned. If this UI is a Menu prefab spawned in at runtime, AC will automatically assign this as the MainCamera.
• calli

  March 11

  Thanks for the help - I'll see if I can work it out.
• calli

  March 11 edited March 11

  After testing a bit more, it seems like there is an issue from the AC side.

  I have a test UI menu with a TexMesh PRO link and a button. Both work fine in play mode whether the canvas is overlaid or rendered by AC's Main camera.

  But as soon as AC handles the menu, the link doesn't detect the mouse clicks. It's weird because the button still works fine.

  If I disable the AC main camera, it does work (but the AC cursor isn't rendered properly).

  Any idea why that could be?
• ChrisIceBox

  March 12

  How is AC handling the Menu - just spawning it in and enabling it, or are there any elements linking to the Text?

  Where is the script placed, and if you place a Debug.Log statement at the top of the OnPointerClick function, does it show in the Console when the link is clicked?
• calli

  March 14

  The script is placed on my Unity UI's TextMesh Pro text.
  The text is linked to a Label element in AC.

  The menu is set to appear during gameplay.

  A Debug.Log statement appears when I click the tag when the menu is set to Overlay, but nothing happens when it's set to Screen Space - Camera (Main Camera).
• ChrisIceBox

  March 15

  I don't see how AC can be a factor here. If you place the UI prefab in a blank scene, without AC, and run it with some sample link text in the TextMeshPro text box, does the Log show, after setting it to Screen Space Camera and assigning the Main Camera?
• calli

  March 17 edited March 17

  Hi again.

  sorry but I still can't work this one out. Here is my full testing setup:

  • I am using this script to turn textmesh pro links into hyperlinks.

  • The script is placed on a textmesh pro element. The text has link tags around the words CLICK THIS

  • The UI canvas is placed in a new scene without AC. When I run the game, the link turns blue when I hover my mouse over it. It works both in Screen Space - Overlay and in Screen Space - Camera mode.

  • I then make a prefab of the UI and link it to AC. It has a Label element and the right Constant ID. The menu label has the same text and tags as the original textmesh pro text.

  • I disable the prefab in the scene and launch the game. Hovering above the link turns it blue as expected, but only when the UI canvas is set to Screen Space - Overlay.

  • When I save the UI canvas prefab as Screen Space - Camera mode and AC launches it, the link detection doesn't work.

  I've tried assigning different cameras to render the UI. Different main camera settings for clipping planes, depth, FOV. Also played with the aspect ratio in the camera settings but nothing seems to work. Any ideas what else I could try? It's very puzzling
• ChrisIceBox

  March 18

  The UI canvas is placed in a new scene without AC. When I run the game, the link turns blue when I hover my mouse over it. It works both in Screen Space - Overlay and in Screen Space - Camera mode.

  When testing, are you assigning the scene's Camera in the Canvas component? If unassigned, the Canvas will act identical to Screen Space - Overlay mode.

  I then make a prefab of the UI and link it to AC. It has a Label element and the right Constant ID. The menu label has the same text and tags as the original textmesh pro text.

  If you link the UI prefab to AC as a Menu, but remove the Label element (so that the TextMesh Pro component remains, but is unaffected by AC), what then?

  When I save the UI canvas prefab as Screen Space - Camera mode and AC launches it, the link detection doesn't work.

  Does the Debug.Log statement appear in the Console?
• calli

  March 26

  Thanks for the help, Chris. I'm still stumped by this one so I will leave it in the Overlay screen space for now.