512 lines
25 KiB
C#
512 lines
25 KiB
C#
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/// ---------------------------------------------
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/// Ultimate Character Controller
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/// Copyright (c) Opsive. All Rights Reserved.
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/// https://www.opsive.com
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/// ---------------------------------------------
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namespace Opsive.UltimateCharacterController.StateSystem
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{
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using Opsive.Shared.Events;
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using Opsive.Shared.Game;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.SceneManagement;
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/// <summary>
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/// Handles the activation and deactivation of states.
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/// </summary>
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public class StateManager : MonoBehaviour
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{
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[Tooltip("Should the OnStateChange event be sent when the state changes active status?")]
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[SerializeField] protected bool m_SendStateChangeEvent;
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public bool SendStateChangeEvent { get { return m_SendStateChangeEvent; } set { m_SendStateChangeEvent = value; } }
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private static StateManager s_Instance;
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private static StateManager Instance
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{
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get
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{
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if (!s_Initialized) {
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s_Instance = new GameObject("State Manager").AddComponent<StateManager>();
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s_Initialized = true;
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}
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return s_Instance;
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}
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}
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private static bool s_Initialized;
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private Dictionary<object, Dictionary<string, State>> m_ObjectNameStateMap = new Dictionary<object, Dictionary<string, State>>();
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private Dictionary<GameObject, Dictionary<string, List<State>>> m_GameObjectNameStateList = new Dictionary<GameObject, Dictionary<string, List<State>>>();
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private Dictionary<GameObject, List<GameObject>> m_LinkedGameObjectList = new Dictionary<GameObject, List<GameObject>>();
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private Dictionary<State, State[]> m_StateArrayMap = new Dictionary<State, State[]>();
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private Dictionary<GameObject, HashSet<string>> m_ActiveCharacterStates = new Dictionary<GameObject, HashSet<string>>();
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private Dictionary<GameObject, Dictionary<string, ScheduledEventBase>> m_DisableStateTimerMap;
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/// <summary>
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/// The object has been enabled.
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/// </summary>
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private void OnEnable()
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{
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// The object may have been enabled outside of the scene unloading.
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if (s_Instance == null) {
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s_Instance = this;
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s_Initialized = true;
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SceneManager.sceneUnloaded -= SceneUnloaded;
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}
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}
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/// <summary>
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/// Initializes the states belonging to the owner on the GameObject.
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/// </summary>
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/// <param name="gameObject">The GameObject to enable or disable all of the states on.</param>
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/// <param name="owner">The object that state belongs to.</param>
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/// <param name="states">A list of all of the states which the owner contains.</param>
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public static void Initialize(GameObject gameObject, IStateOwner owner, State[] states)
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{
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Instance.InitializeInternal(gameObject, owner, states);
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}
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/// <summary>
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/// Internal method which initializes the states belonging to the owner on the GameObject.
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/// </summary>
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/// <param name="gameObject">The GameObject to enable or disable all of the states on.</param>
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/// <param name="owner">The object that state belongs to.</param>
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/// <param name="states">A list of all of the states which the owner contains.</param>
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private void InitializeInternal(GameObject gameObject, IStateOwner owner, State[] states)
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{
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// The last state will always be reserved for the default state.
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if (states[states.Length - 1] == null) {
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states[states.Length - 1] = new State("Default", true);
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}
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states[states.Length - 1].Preset = DefaultPreset.CreateDefaultPreset();
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Dictionary<string, State> nameStateMap;
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if (!m_ObjectNameStateMap.TryGetValue(owner, out nameStateMap)) {
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nameStateMap = new Dictionary<string, State>();
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m_ObjectNameStateMap.Add(owner, nameStateMap);
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}
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// Populate the maps for quick lookup based on owner and GameObject.
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GameObject characterGameObject = null;
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var characterLocomotion = gameObject.GetCachedParentComponent<Character.UltimateCharacterLocomotion>();
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if (characterLocomotion != null) {
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characterGameObject = characterLocomotion.gameObject;
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} else {
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var cameraController = gameObject.GetCachedParentComponent<UltimateCharacterController.Camera.CameraController>();
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if (cameraController != null) {
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characterGameObject = cameraController.Character;
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}
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}
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for (int i = 0; i < states.Length; ++i) {
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if (states[i].Preset == null) {
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Debug.LogError(string.Format("Error: The state {0} on {1} does not have a preset. Ensure each non-default state contains a preset.", states[i].Name, owner), owner as Object);
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}
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nameStateMap.Add(states[i].Name, states[i]);
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Dictionary<string, List<State>> nameStateList;
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if (!m_GameObjectNameStateList.TryGetValue(gameObject, out nameStateList)) {
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nameStateList = new Dictionary<string, List<State>>();
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m_GameObjectNameStateList.Add(gameObject, nameStateList);
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}
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// Child GameObjects should listen for states set on the parent. This for example allows an item to react to a state change even if that state change
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// is set on the character. The character GameObject does not need to be made aware of the Default state.
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if (i != states.Length - 1) {
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if (characterGameObject != null && gameObject != characterGameObject) {
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Dictionary<string, List<State>> characterNameStateList;
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if (!m_GameObjectNameStateList.TryGetValue(characterGameObject, out characterNameStateList)) {
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characterNameStateList = new Dictionary<string, List<State>>();
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m_GameObjectNameStateList.Add(characterGameObject, characterNameStateList);
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}
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List<State> characterStateList;
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if (!characterNameStateList.TryGetValue(states[i].Name, out characterStateList)) {
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characterStateList = new List<State>();
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characterNameStateList.Add(states[i].Name, characterStateList);
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}
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characterStateList.Add(states[i]);
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}
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}
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List<State> stateList;
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if (!nameStateList.TryGetValue(states[i].Name, out stateList)) {
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stateList = new List<State>();
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nameStateList.Add(states[i].Name, stateList);
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}
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stateList.Add(states[i]);
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m_StateArrayMap.Add(states[i], states);
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}
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// Initialize the state after the map has been created.
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for (int i = 0; i < states.Length; ++i) {
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states[i].Initialize(owner, nameStateMap);
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}
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// The default state is always last.
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states[states.Length - 1].Active = true;
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// Remember the active character states so if a GameObject is initialized after a state has already been activated that newly initialized GameObject
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// can start the correct states. As an example an item could be picked up after the character is already aiming. That item should go directly
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// into the aim state instead of requring the character to aim again.
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if (characterGameObject != null) {
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if (characterGameObject == gameObject) {
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// If the current GameObject is the character then the active states should be tracked.
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if (!m_ActiveCharacterStates.ContainsKey(gameObject)) {
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m_ActiveCharacterStates.Add(gameObject, new HashSet<string>());
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}
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} else {
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// If the current GameObject is not the character then the active character states should be applied to the child object.
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HashSet<string> activeStates;
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if (m_ActiveCharacterStates.TryGetValue(characterGameObject, out activeStates)) {
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if (activeStates.Count > 0) {
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foreach (var stateName in activeStates) {
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SetState(gameObject, stateName, true);
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}
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}
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}
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}
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}
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}
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/// <summary>
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/// Links the original GameObject to the linked GameObject. When GameObjects are linked the state will be updated for each GameObject even when only the
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/// original GameObject is set.
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/// </summary>
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/// <param name="original">The original GameObject to link.</param>
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/// <param name="linkedGameObject">The GameObject that should be linked to the original GameObject.</param>
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/// <param name="link">Should the GameObjects be linked. If fales the GameObjects will be unlinked.</param>
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public static void LinkGameObjects(GameObject original, GameObject linkedGameObject, bool link)
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{
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Instance.LinkGameObjectsInternal(original, linkedGameObject, link);
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}
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/// <summary>
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/// Internal method which links the original GameObject to the linked GameObject. When GameObjects are linked the state will be updated for each
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/// GameObject even when only the original GameObject is set.
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/// </summary>
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/// <param name="original">The original GameObject to link.</param>
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/// <param name="linkedGameObject">The GameObject that should be linked to the original GameObject.</param>
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/// <param name="link">Should the GameObjects be linked. If fales the GameObjects will be unlinked.</param>
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private void LinkGameObjectsInternal(GameObject original, GameObject linkedGameObject, bool link)
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{
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List<GameObject> linkedGameObjectList;
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if (!m_LinkedGameObjectList.TryGetValue(original, out linkedGameObjectList) && link) {
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linkedGameObjectList = new List<GameObject>();
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m_LinkedGameObjectList.Add(original, linkedGameObjectList);
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}
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if (linkedGameObjectList != null) {
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if (link) {
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linkedGameObjectList.Add(linkedGameObject);
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// If the current GameObject is not the character then the active character states should be applied to the child object.
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HashSet<string> activeStates;
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if (m_ActiveCharacterStates.TryGetValue(original, out activeStates)) {
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if (activeStates.Count > 0) {
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foreach (var stateName in activeStates) {
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SetState(linkedGameObject, stateName, true);
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}
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}
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}
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} else {
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linkedGameObjectList.Remove(linkedGameObject);
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}
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}
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}
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/// <summary>
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/// Activates or deactivates the specified state.
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/// </summary>
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/// <param name="owner">The object that state belongs to.</param>
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/// <param name="states">A list of all of the states which the owner contains.</param>
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/// <param name="stateName">The name of the state to change the active status of.</param>
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/// <param name="active">Should the state be activated?</param>
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public static void SetState(object owner, State[] states, string stateName, bool active)
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{
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Instance.SetStateInternal(owner, states, stateName, active);
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}
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/// <summary>
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/// Internal method which activates or deactivates the specified state.
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/// </summary>
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/// <param name="owner">The object that state belongs to.</param>
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/// <param name="states">A list of all of the states which the owner contains.</param>
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/// <param name="stateName">The name of the state to change the active status of.</param>
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/// <param name="active">Should the state be activated?</param>
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private void SetStateInternal(object owner, State[] states, string stateName, bool active)
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{
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// Lookup the state by owner.
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Dictionary<string, State> nameStateMap;
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if (!m_ObjectNameStateMap.TryGetValue(owner, out nameStateMap)) {
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Debug.LogWarning("Warning: Unable to find the name state map on object " + owner);
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return;
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}
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// Lookup the state by name.
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State state;
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if (!nameStateMap.TryGetValue(stateName, out state)) {
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Debug.LogWarning("Warning: Unable to find the state with name " + stateName);
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return;
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}
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// The state has been found, activate or deactivate the states.
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if (state.Active != active) {
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ActivateStateInternal(state, active, states);
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}
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}
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/// <summary>
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/// Activates or deactivates all of the states on the specified GameObject with the specified name.
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/// </summary>
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/// <param name="gameObject">The GameObject to enable or disable all of the states on.</param>
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/// <param name="stateName">The name of the state to change the active status of.</param>
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/// <param name="active">Should the state be activated?</param>
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public static void SetState(GameObject gameObject, string stateName, bool active)
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{
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Instance.SetStateInternal(gameObject, stateName, active);
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}
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/// <summary>
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/// Internal method which activates or deactivates all of the states on the specified GameObject with the specified name.
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/// </summary>
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/// <param name="gameObject">The GameObject to enable or disable all of the states on.</param>
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/// <param name="stateName">The name of the state to change the active status of.</param>
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/// <param name="active">Should the state be activated?</param>
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private void SetStateInternal(GameObject gameObject, string stateName, bool active)
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{
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// Remember the active character status.
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var characterLocomotion = gameObject.GetCachedComponent<Character.UltimateCharacterLocomotion>();
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if (characterLocomotion != null) {
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HashSet<string> activeStates;
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if (m_ActiveCharacterStates.TryGetValue(gameObject, out activeStates)) {
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// If the state name appears within the set then the state is active.
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if (active) {
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activeStates.Add(stateName);
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} else {
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activeStates.Remove(stateName);
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}
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}
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}
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// Lookup the states by GameObject.
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Dictionary<string, List<State>> nameStateList;
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if (!m_GameObjectNameStateList.TryGetValue(gameObject, out nameStateList)) {
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SetLinkStateInternal(gameObject, stateName, active);
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return;
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}
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// Lookup the states by name.
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List<State> stateList;
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if (!nameStateList.TryGetValue(stateName, out stateList)) {
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SetLinkStateInternal(gameObject, stateName, active);
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return;
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}
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// An event can be sent when the active status changes. This is useful for multiplayer in that it allows the networking implementation
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// to send the state changes across the network.
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if (m_SendStateChangeEvent) {
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EventHandler.ExecuteEvent("OnStateChange", gameObject, stateName, active);
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}
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// The states have been found, activate or deactivate the states.
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for (int i = 0; i < stateList.Count; ++i) {
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if (stateList[i].Active != active) {
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// The state array must exist to be able to apply the changes.
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State[] states;
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if (!m_StateArrayMap.TryGetValue(stateList[i], out states)) {
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Debug.LogWarning("Warning: Unable to find the state array with state name " + stateName);
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return;
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}
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// Notify the owner that the states will change.
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stateList[i].Owner.StateWillChange();
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ActivateStateInternal(stateList[i], active, states);
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// Notify the owner that the state has changed.
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stateList[i].Owner.StateChange();
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}
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}
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|
|
|
|||
|
|
SetLinkStateInternal(gameObject, stateName, active);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Internal method which activates or deactivates all of the states on the GameObjects linked from the GameObject with the specified name.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="gameObject">The GameObject to enable or disable all of the states on.</param>
|
|||
|
|
/// <param name="stateName">The name of the state to change the active status of.</param>
|
|||
|
|
/// <param name="active">Should the state be activated?</param>
|
|||
|
|
private void SetLinkStateInternal(GameObject gameObject, string stateName, bool active)
|
|||
|
|
{
|
|||
|
|
List<GameObject> linkedGameObjects;
|
|||
|
|
if (m_LinkedGameObjectList.TryGetValue(gameObject, out linkedGameObjects)) {
|
|||
|
|
for (int i = 0; i < linkedGameObjects.Count; ++i) {
|
|||
|
|
SetStateInternal(linkedGameObjects[i], stateName, active);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Activates or deactivates the specified state. In most cases SetState should be used instead of ActivateState.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="state">The state to activate or deactivate.</param>
|
|||
|
|
/// <param name="active">Should the state be activated?</param>
|
|||
|
|
/// <param name="states">The array of states that the state belongs to.</param>
|
|||
|
|
public static void ActivateState(State state, bool active, State[] states)
|
|||
|
|
{
|
|||
|
|
Instance.ActivateStateInternal(state, active, states);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Internal method which activates or deactivates the specified state. In most cases SetState should be used instead of ActivateState.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="state">The state to activate or deactivate.</param>
|
|||
|
|
/// <param name="active">Should the state be activated?</param>
|
|||
|
|
/// <param name="states">The array of states that the state belongs to.</param>
|
|||
|
|
private void ActivateStateInternal(State state, bool active, State[] states)
|
|||
|
|
{
|
|||
|
|
// Return early if there no work needs to be done.
|
|||
|
|
if (state.Active == active) {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Set the active state.
|
|||
|
|
state.Active = active;
|
|||
|
|
|
|||
|
|
// Apply the changes.
|
|||
|
|
CombineStates(state, active, states);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Loops through the states and applies the value. The states are looped in the order specified within the inspector from top to bottom.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="state">The state that was activated or deactivated.</param>
|
|||
|
|
/// <param name="active">Was the activated?</param>
|
|||
|
|
/// <param name="states">The array of states that the state belongs to.</param>
|
|||
|
|
private void CombineStates(State state, bool active, State[] states)
|
|||
|
|
{
|
|||
|
|
if (active) {
|
|||
|
|
// Apply the default value of the blocked states before looping through all of the states. This will ensure the default value
|
|||
|
|
// is set for that property if no other states set the property value.
|
|||
|
|
for (int i = states.Length - 2; i > -1; --i) {
|
|||
|
|
if (states[i].Active && states[i].IsBlocked()) {
|
|||
|
|
states[states.Length - 1].ApplyValues(states[i].Preset.Delegates);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
// Restore the default values if the state is no longer active.
|
|||
|
|
states[states.Length - 1].ApplyValues(state.Preset.Delegates);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Loop backwards so the higher priority states are applied first. Do not apply the default state because it was applied above.
|
|||
|
|
for (int i = states.Length - 2; i > -1; --i) {
|
|||
|
|
// Don't apply the state if the state isn't active.
|
|||
|
|
if (!states[i].Active) {
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Do not apply the state if it is currently blocked by another state.
|
|||
|
|
if (states[i].IsBlocked()) {
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
states[i].ApplyValues();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Activates the state and then deactivates the state after the specified amount of time.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="gameObject">The Gameobject to set the state on.</param>
|
|||
|
|
/// <param name="stateName">The name of the state to activate and then deactivate.</param>
|
|||
|
|
/// <param name="time">The amount of time that should elapse before the state is disabled.</param>
|
|||
|
|
public static void DeactivateStateTimer(GameObject gameObject, string stateName, float time)
|
|||
|
|
{
|
|||
|
|
Instance.DeactivateStateTimerInternal(gameObject, stateName, time);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Internal method which activates the state and then deactivates the state after the specified amount of time.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="gameObject">The Gameobject to set the state on.</param>
|
|||
|
|
/// <param name="stateName">The name of the state to activate and then deactivate.</param>
|
|||
|
|
/// <param name="time">The amount of time that should elapse before the state is disabled.</param>
|
|||
|
|
private void DeactivateStateTimerInternal(GameObject gameObject, string stateName, float time)
|
|||
|
|
{
|
|||
|
|
if (m_DisableStateTimerMap == null) {
|
|||
|
|
m_DisableStateTimerMap = new Dictionary<GameObject, Dictionary<string, ScheduledEventBase>>();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Dictionary<string, ScheduledEventBase> stateNameEventMap;
|
|||
|
|
if (m_DisableStateTimerMap.TryGetValue(gameObject, out stateNameEventMap)) {
|
|||
|
|
ScheduledEventBase disableEvent;
|
|||
|
|
if (stateNameEventMap.TryGetValue(stateName, out disableEvent)) {
|
|||
|
|
// The state name exists. This means that the timer is currently active and should first been cancelled.
|
|||
|
|
Scheduler.Cancel(disableEvent);
|
|||
|
|
disableEvent = Scheduler.Schedule(time, DeactivateState, gameObject, stateName);
|
|||
|
|
} else {
|
|||
|
|
// The state name hasn't been added yet. Add it to the map.
|
|||
|
|
disableEvent = Scheduler.Schedule(time, DeactivateState, gameObject, stateName);
|
|||
|
|
stateNameEventMap.Add(stateName, disableEvent);
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
// Neither the GameObject nor the state has been activated. Create the maps.
|
|||
|
|
stateNameEventMap = new Dictionary<string, ScheduledEventBase>();
|
|||
|
|
var disableEvent = Scheduler.Schedule(time, DeactivateState, gameObject, stateName);
|
|||
|
|
stateNameEventMap.Add(stateName, disableEvent);
|
|||
|
|
m_DisableStateTimerMap.Add(gameObject, stateNameEventMap);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Deactives the specified state and removes it form the timer map.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="gameObject">The GameObject to set the state on.</param>
|
|||
|
|
/// <param name="stateName">The name of the state to set.</param>
|
|||
|
|
private void DeactivateState(GameObject gameObject, string stateName)
|
|||
|
|
{
|
|||
|
|
SetState(gameObject, stateName, false);
|
|||
|
|
|
|||
|
|
Dictionary<string, ScheduledEventBase> stateNameEventMap;
|
|||
|
|
if (m_DisableStateTimerMap.TryGetValue(gameObject, out stateNameEventMap)) {
|
|||
|
|
stateNameEventMap.Remove(stateName);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Reset the initialized variable when the scene is no longer loaded.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="scene">The scene that was unloaded.</param>
|
|||
|
|
private void SceneUnloaded(Scene scene)
|
|||
|
|
{
|
|||
|
|
s_Initialized = false;
|
|||
|
|
s_Instance = null;
|
|||
|
|
SceneManager.sceneUnloaded -= SceneUnloaded;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// The object has been disabled.
|
|||
|
|
/// </summary>
|
|||
|
|
private void OnDisable()
|
|||
|
|
{
|
|||
|
|
SceneManager.sceneUnloaded += SceneUnloaded;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#if UNITY_2019_3_OR_NEWER
|
|||
|
|
/// <summary>
|
|||
|
|
/// Reset the static variables for domain reloading.
|
|||
|
|
/// </summary>
|
|||
|
|
[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
|
|||
|
|
private static void DomainReset()
|
|||
|
|
{
|
|||
|
|
s_Initialized = false;
|
|||
|
|
s_Instance = null;
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
}
|