A game about forced loneliness, made by TACStudios
tacstudios.tngl.sh
1#if PACKAGE_DOCS_GENERATION || UNITY_INPUT_SYSTEM_ENABLE_UI
2using UnityEngine.EventSystems;
3
4namespace UnityEngine.InputSystem.UI
5{
6 /// <summary>
7 /// A modified EventSystem class, which allows multiple players to have their own instances of a UI,
8 /// each with it's own selection.
9 /// </summary>
10 /// <remarks>
11 /// You can use the <see cref="playerRoot"/> property to specify a part of the hierarchy belonging to the current player.
12 /// Mouse selection will ignore any game objects not within this hierarchy, and all other navigation, using keyboard or
13 /// gamepad for example, will be constrained to game objects under that hierarchy.
14 /// </remarks>
15 [HelpURL(InputSystem.kDocUrl + "/manual/UISupport.html#multiplayer-uis")]
16 public class MultiplayerEventSystem : EventSystem
17 {
18 [Tooltip("If set, only process mouse and navigation events for any game objects which are children of this game object.")]
19 [SerializeField] private GameObject m_PlayerRoot;
20
21 /// <summary>
22 /// The root object of the UI hierarchy that belongs to the given player.
23 /// </summary>
24 /// <remarks>
25 /// This can either be an entire <c>Canvas</c> or just part of the hierarchy of
26 /// a specific <c>Canvas</c>.
27 /// </remarks>
28 public GameObject playerRoot
29 {
30 get => m_PlayerRoot;
31 set
32 {
33 m_PlayerRoot = value;
34 InitializePlayerRoot();
35 }
36 }
37
38 protected override void OnEnable()
39 {
40 base.OnEnable();
41
42 InitializePlayerRoot();
43 }
44
45 protected override void OnDisable()
46 {
47 base.OnDisable();
48 }
49
50 private void InitializePlayerRoot()
51 {
52 if (m_PlayerRoot == null) return;
53
54 var inputModule = GetComponent<InputSystemUIInputModule>();
55 if (inputModule != null)
56 inputModule.localMultiPlayerRoot = m_PlayerRoot;
57 }
58
59 protected override void Update()
60 {
61 var originalCurrent = current;
62 current = this; // in order to avoid reimplementing half of the EventSystem class, just temporarily assign this EventSystem to be the globally current one
63 try
64 {
65 base.Update();
66 }
67 finally
68 {
69 current = originalCurrent;
70 }
71 }
72 }
73}
74#endif