Tasharen Entertainment Forum

Support => NGUI 3 Support => Topic started by: Shifty Geezer on January 18, 2014, 12:56:35 PM

Title: How to implement OnDown/LongPress?
Post by: Shifty Geezer on January 18, 2014, 12:56:35 PM

The behaviour I want is to fire an action based on x amount of time with the finger/mouse held down. I can create a script to read the length of a click when released just fine, for differentiating between clicks and presses based on time to release, but the NGUI events are only triggered on a change - there's no continuous feedback.

What's the best change (or even any, as I haven't found one solution yet!) I can make to add 'time_touch_is_down' to the event system. I can add time values to MouseOrTouch events but I can't figure out the notification system to send time notifications as long as a finger is down, nor can I figure out how to add a longPress parameterisation in NGUI, which seems heavily geared towards boolean events. Another approach I've tried is to get the current object's pressed time from my custom control script.

Title: Re: How to implement OnDown/LongPress?
Post by: ArenMook on January 18, 2014, 10:12:36 PM

Use your own events, not NGUI. In OnPress(true), set some local flag. In OnPress(false), clear it. In Update(), check the flag -- if true, do whatever you need to do. Record the time in OnPress(true) if you need a delta, etc.

Title: Re: How to implement OnDown/LongPress?
Post by: Shifty Geezer on January 19, 2014, 09:45:46 AM

Of course. Thanks.

Title: Re: How to implement OnDown/LongPress?
Post by: Ugur on January 19, 2014, 11:33:56 AM

try this:
UIRepeatButton.cs :

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class UIRepeatButton : MonoBehaviour
6. {
7.         public float interval = 0.0001525F;
8.        
9.         bool mIsPressed = false;
10.         float mNextClick = 0f;
11.  
12.         public List<EventDelegate> onPressListeners = new List<EventDelegate>();
13.  
14.        
15.         void OnPress (bool isPressed) { mIsPressed = isPressed; mNextClick = Time.realtimeSinceStartup + interval; }
16.        
17.         void Update ()
18.         {
19.                 if (mIsPressed && Time.realtimeSinceStartup > mNextClick)
20.                 {
21.                         mNextClick = Time.realtimeSinceStartup + interval;
22.                        
23.                         // Do what you need to do, or simply:
24.                         //SendMessage("OnClick", SendMessageOptions.DontRequireReceiver);
25.                         //cleaner:
26.                         EventDelegate.Execute(onPressListeners);
27.                 }
28.         }
29. }
30.  
31.  

UIRepeatButtonEditor.cs (put into Editor folder in project assets, allows to more nicely choose the event handler for the button..)

1.  
2. using UnityEngine;
3. using UnityEditor;
4.  
5. [CanEditMultipleObjects]
6. [CustomEditor(typeof(UIRepeatButton))]
7. public class UIRepeatButtonEditor : UIWidgetContainerEditor
8. {
9.         public override void OnInspectorGUI ()
10.         {
11.                 serializedObject.Update();
12.  
13.                 UIRepeatButton button = target as UIRepeatButton;
14.  
15.                 //this allows to more conveniently set the event handler:
16.                 NGUIEditorTools.DrawEvents("On Repeated Press", button, button.onPressListeners);
17.         }
18.        
19.         enum Highlight
20.         {
21.                 DoNothing,
22.                 Press,
23.         }
24. }
25.  
26.  
27.