NGUIのボタン押しっぱなし判定用

HoldPressBtn.cs

using UnityEngine;
using System.Collections;
using System;

/// <summary>
/// NGUIのボタン押しっぱなし判定用
/// </summary>
[RequireComponent(typeof(UIButton))]
public class HoldPressBtn : MonoBehaviour
{
    // 押しっぱなし判定の間隔（この間隔毎にActionHoldPressが呼ばれる）
    [SerializeField]
    float intervalAction = 0.2f;
    // 押下開始時にもActionHoldPressを呼び出すフラグ
    [SerializeField]
    bool callActionFirstPress;
    // 次の押下判定時間
    float nextTime = 0f;
    // 押しっぱなし時に呼び出すAction
    Action actionHoldPress;
    // 押下中フラグ
    public bool pressed {
        get;
        private set;
    }

    void Update ()
    {
        if (pressed && nextTime < Time.realtimeSinceStartup) {
            nextTime = Time.realtimeSinceStartup + intervalAction;
            if (actionHoldPress != null) {
                actionHoldPress ();
            }
        }
    }
    
    void OnPress (bool pressed)
    {
        this.pressed = pressed;
        nextTime = Time.realtimeSinceStartup + intervalAction;
        if (pressed && callActionFirstPress && actionHoldPress != null) {
            actionHoldPress ();
        }
    }
    
    public void SetActionHoldPress(Action action) {
        actionHoldPress = action;
    }
}