59 lines
1.7 KiB
C#
59 lines
1.7 KiB
C#
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.SceneManagement;
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namespace IngameDebugConsole
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{
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// Avoid multiple EventSystems in the scene by activating the embedded EventSystem only if one doesn't already exist in the scene
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[DefaultExecutionOrder(1000)]
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public class EventSystemHandler : MonoBehaviour
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{
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#pragma warning disable 0649
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[SerializeField] private GameObject embeddedEventSystem;
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#pragma warning restore 0649
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private void OnEnable()
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{
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SceneManager.sceneLoaded -= OnSceneLoaded;
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SceneManager.sceneLoaded += OnSceneLoaded;
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SceneManager.sceneUnloaded -= OnSceneUnloaded;
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SceneManager.sceneUnloaded += OnSceneUnloaded;
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ActivateEventSystemIfNeeded();
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}
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private void OnDisable()
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{
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SceneManager.sceneLoaded -= OnSceneLoaded;
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SceneManager.sceneUnloaded -= OnSceneUnloaded;
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DeactivateEventSystem();
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}
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private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
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{
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#if UNITY_2017_2_OR_NEWER
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DeactivateEventSystem();
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#endif
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ActivateEventSystemIfNeeded();
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}
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private void OnSceneUnloaded(Scene current)
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{
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// Deactivate the embedded EventSystem before changing scenes because the new scene might have its own EventSystem
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DeactivateEventSystem();
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}
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private void ActivateEventSystemIfNeeded()
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{
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if (embeddedEventSystem && !EventSystem.current)
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embeddedEventSystem.SetActive(true);
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}
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private void DeactivateEventSystem()
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{
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if (embeddedEventSystem)
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embeddedEventSystem.SetActive(false);
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}
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}
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}
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