Spawn event system

Unity Engine
1

Hi I’ve created a script with and old version of unity and in unity 5 I have some errors

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class SpawnExplosions : MonoBehaviour
{
    public GameObject prefab;
    public Camera viewCamera;
    public Vector2 range = new Vector2(300f, 200f);
    public float frequency = 0.25f;
    public float duration = 1f;

    float m_NextSpawn = 0f;

    void Update ()
    {
        float time = Time.time;
        var system = EventSystemManager.currentSystem;
        if (time > m_NextSpawn && system && !system.IsPointerOverEventSystemObject())
        {
            m_NextSpawn = time + frequency;

            Vector3 position = Input.mousePosition;
            position.z = 10f;
            position = GetComponent<Camera>().ScreenToWorldPoint(position);

            GameObject child = Instantiate (prefab) as GameObject;
            child.transform.localPosition = position;
            child.transform.localRotation = Quaternion.identity;
            child.transform.localScale = Vector3.one;
            Destroy(child, duration);
        }
    }
}

Assets/Scripts/SpawnExplosions.cs(19,21): error CS0019: Operator &&' cannot be applied to operands of type bool’ and object' Assets/Scripts/SpawnExplosions.cs(18,30): error CS0103: The name EventSystemManager’ does not exist in the current context

Someone could help?

2

The answer to this is easily searchable on both this forum and the Internet. Use the error as the search criteria.