扩展跨平台输入无法正常工作

Question

我正在尝试扩展跨平台输入，以便使移动按钮左右移动角色。我做的是我创建了两个按钮和一个附加到每个名为MobileMovementButtons.cs的脚本。我运行程序，角色向左移动很好但不对......我认为它与我的条件语句有关..

这是我的代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityStandardAssets.CrossPlatformInput;
using UnityEngine.EventSystems; 

namespace CrossPlatformInput {
    public class MobileMovementButton : MonoBehaviour, IPointerUpHandler, IPointerDownHandler{

        public enum Direction {
            Left,
            Right
        }

        public Direction buttonDirection = Direction.Left;

        CrossPlatformInputManager.VirtualAxis m_HorizontalVirtualAxis;


        private bool rightPressed = false;
        private bool leftPressed = false;


        void Awake() {
            CrossPlatformInputManager.UnRegisterVirtualAxis ("Horizontal");
        }

        void OnEnable() {
            m_HorizontalVirtualAxis = new CrossPlatformInputManager.VirtualAxis("Horizontal" );
            CrossPlatformInputManager.RegisterVirtualAxis(m_HorizontalVirtualAxis);
        }

        void Update() {
            if (rightPressed) {
                m_HorizontalVirtualAxis.Update (1);
            }
            if (leftPressed) {
                m_HorizontalVirtualAxis.Update (-1);
            } 
            if (!leftPressed && !rightPressed){
                m_HorizontalVirtualAxis.Update (0);
            }
        }

        public void OnPointerDown(PointerEventData eD) {
        if (this.buttonDirection == Direction.Left) {
            leftPressed = true;
        } 

        if (this.buttonDirection == Direction.Right) {
            rightPressed = true;
        }
    }

    public void OnPointerUp(PointerEventData eD) {
        if (this.buttonDirection == Direction.Left) {
            leftPressed = false;
        } 

        if (this.buttonDirection == Direction.Right) {
            rightPressed = false;
        }
    }


    }
}

以下是按钮：