315 lines
14 KiB
C#
315 lines
14 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.Character
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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 Opsive.UltimateCharacterController.Character.Abilities;
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using Opsive.UltimateCharacterController.Character.Abilities.Items;
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using Opsive.UltimateCharacterController.Game;
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using Opsive.UltimateCharacterController.Input;
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using Opsive.UltimateCharacterController.StateSystem;
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using System.Collections.Generic;
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using UnityEngine;
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/// <summary>
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/// The UltimateCharacterLocomotionHandler manages player input and the UltimateCharacterLocomotion.
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/// </summary>
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public class UltimateCharacterLocomotionHandler : StateBehavior
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{
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[Tooltip("The name of the horizontal input mapping.")]
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[SerializeField] protected string m_HorizontalInputName = "Horizontal";
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[Tooltip("The name of the forward input mapping.")]
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[SerializeField] protected string m_ForwardInputName = "Vertical";
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public string HorizontalInputName { get { return m_HorizontalInputName; } set { m_HorizontalInputName = value; } }
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public string ForwardInputName { get { return m_ForwardInputName; } set { m_ForwardInputName = value; } }
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private GameObject m_GameObject;
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private PlayerInput m_PlayerInput;
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protected UltimateCharacterLocomotion m_CharacterLocomotion;
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private List<ActiveInputEvent> m_ActiveInputList;
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private bool m_InputEnabled;
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protected float m_HorizontalMovement;
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protected float m_ForwardMovement;
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/// <summary>
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/// Initialize the default values.
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/// </summary>
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protected override void Awake()
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{
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base.Awake();
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m_GameObject = gameObject;
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m_CharacterLocomotion = m_GameObject.GetCachedComponent<UltimateCharacterLocomotion>();
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m_PlayerInput = m_GameObject.GetCachedComponent<PlayerInput>();
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if (m_PlayerInput != null) {
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EventHandler.RegisterEvent<Ability, bool>(m_GameObject, "OnCharacterAbilityActive", OnAbilityActive);
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EventHandler.RegisterEvent<ItemAbility, bool>(m_GameObject, "OnCharacterItemAbilityActive", OnItemAbilityActive);
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EventHandler.RegisterEvent<int, int>(m_GameObject, "OnItemSetManagerUpdateItemSet", OnUpdateItemSet);
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EventHandler.RegisterEvent<Vector3, Vector3, GameObject>(m_GameObject, "OnDeath", OnDeath);
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EventHandler.RegisterEvent(m_GameObject, "OnRespawn", OnRespawn);
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EventHandler.RegisterEvent<bool>(m_GameObject, "OnEnableGameplayInput", OnEnableGameplayInput);
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m_InputEnabled = true;
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}
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}
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/// <summary>
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/// Updates the input.
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/// </summary>
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private void Update()
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{
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// The input should be retrieved within Update. The KinematicObjectManager will then move the character according to the input.
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m_HorizontalMovement = m_PlayerInput.GetAxisRaw(m_HorizontalInputName);
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m_ForwardMovement = m_PlayerInput.GetAxisRaw(m_ForwardInputName);
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KinematicObjectManager.SetCharacterMovementInput(m_CharacterLocomotion.KinematicObjectIndex, m_HorizontalMovement, m_ForwardMovement);
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UpdateAbilityInput();
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}
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/// <summary>
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/// Updates the input for the abilities and input events. Will start/stop abilities if the input is enabled.
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/// </summary>
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private void UpdateAbilityInput()
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{
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if (!m_InputEnabled) {
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return;
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}
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// Abilities can listen for their own input.
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if (m_ActiveInputList != null) {
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for (int i = 0; i < m_ActiveInputList.Count; ++i) {
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// Execute the event as soon as the input type becomes true.
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if (m_ActiveInputList[i].HasButtonEvent(m_PlayerInput)) {
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ExecuteInputEvent(m_ActiveInputList[i].EventName);
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} else if (m_ActiveInputList[i].HasAxisEvent(m_PlayerInput)) {
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ExecuteInputEvent(m_ActiveInputList[i].EventName, m_ActiveInputList[i].GetAxisValue(m_PlayerInput));
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}
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}
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}
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// Update the input for both the regular abilities and item abilities.
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UpdateAbilityInput(m_CharacterLocomotion.Abilities);
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UpdateAbilityInput(m_CharacterLocomotion.ItemAbilities);
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}
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/// <summary>
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/// Updates the input for the specified abilities. Will start/stop abilities as necessary.
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/// </summary>
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private void UpdateAbilityInput(Ability[] abilities)
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{
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if (abilities != null) {
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// Try to start or stop the ability.
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for (int i = 0; i < abilities.Length; ++i) {
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// The ability has to be enabled in order for it to be able to be stopped/started.
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if (!abilities[i].Enabled) {
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continue;
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}
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var abilityStopped = false;
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if (abilities[i].IsActive) {
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// Stop the ability if it is already started and the input says to stop.
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if (abilities[i].CanInputStopAbility(m_PlayerInput)) {
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abilityStopped = TryStopAbility(abilities[i]);
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}
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}
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// Use a separate if statement because the ability may be stopping while able to receive multiple starts.
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if (!abilityStopped || abilities[i].CanReceiveMultipleStarts) {
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// Start the ability if it is not started and the input says to start. The ability may also be started if it is
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// currently active and can receive multiple starts. This is useful for item abilities that can be activated again while
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// they are still running (such as toggling an equipped item while waiting for the animation to do the equip).
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if (abilities[i].CanInputStartAbility(m_PlayerInput)) {
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TryStartAbility(abilities[i]);
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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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/// An Ability has been activated or deactivated.
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/// </summary>
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/// <param name="ability">The Ability activated or deactivated.</param>
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/// <param name="active">Was the Ability activated?</param>
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private void OnAbilityActive(Ability ability, bool active)
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{
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// When an ability starts it may share the same input as another ability. Update the input on all of the other abilities so they don't respond to input
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// when they shouldn't.
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if (active) {
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CheckAbilityInput(m_CharacterLocomotion.Abilities);
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}
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}
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/// <summary>
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/// An ItemAbility has been activated or deactivated.
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/// </summary>
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/// <param name="itemAbility">The ItemAbility activated or deactivated.</param>
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/// <param name="active">Was the ItemAbility activated?</param>
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private void OnItemAbilityActive(ItemAbility itemAbility, bool active)
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{
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// When an ability starts it may share the same input as another ability. Update the input on all of the other abilities so they don't respond to input
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// when they shouldn't.
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if (active) {
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CheckAbilityInput(m_CharacterLocomotion.ItemAbilities);
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}
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}
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/// <summary>
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/// The ItemSet has changed.
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/// </summary>
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/// <param name="categoryIndex">The index of the changed category.</param>
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/// <param name="itemSetIndex">The index of the changed ItemSet.</param>
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private void OnUpdateItemSet(int categoryIndex, int itemSetIndex)
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{
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// The input may update after the ItemSet has been changed.
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CheckAbilityInput(m_CharacterLocomotion.ItemAbilities);
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}
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/// <summary>
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/// Ensures the ability input is up to date with the latest player input state.
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/// </summary>
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/// <param name="abilities">An array of abilities to check.</param>
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private void CheckAbilityInput(Ability[] abilities)
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{
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for (int i = 0; i < abilities.Length; ++i) {
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if (abilities[i].IsActive) {
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continue;
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}
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abilities[i].CheckInput(m_PlayerInput);
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}
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}
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/// <summary>
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/// Gets the delta yaw rotation of the character.
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/// </summary>
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/// <returns>The delta yaw rotation of the character.</returns>
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public float GetDeltaYawRotation()
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{
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var lookVector = m_PlayerInput.GetLookVector(true);
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return m_CharacterLocomotion.ActiveMovementType.GetDeltaYawRotation(m_HorizontalMovement, m_ForwardMovement, lookVector.x, lookVector.y);
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}
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/// <summary>
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/// Register an input event which allows the ability to receive button callbacks while it is active.
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/// </summary>
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/// <param name="inputEvent">The input event object to register.</param>
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public virtual void RegisterInputEvent(ActiveInputEvent inputEvent)
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{
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if (m_ActiveInputList == null) {
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m_ActiveInputList = new List<ActiveInputEvent>();
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}
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m_ActiveInputList.Add(inputEvent);
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}
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/// <summary>
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/// Unregister the specified input event.
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/// </summary>
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/// <param name="inputEvent">The input event object to unregister.</param>
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public void UnregisterInputEvent(ActiveInputEvent inputEvent)
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{
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// The input list may be null when the object is being destroyed.
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if (m_ActiveInputList == null || inputEvent == null) {
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return;
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}
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m_ActiveInputList.Remove(inputEvent);
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}
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/// <summary>
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/// Tries to start the specified ability.
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/// </summary>
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/// <param name="ability">The ability to try to start.</param>
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/// <returns>True if the ability was started.</returns>
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protected virtual bool TryStartAbility(Ability ability)
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{
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return m_CharacterLocomotion.TryStartAbility(ability);
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}
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/// <summary>
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/// Tries to stop the specified ability.
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/// </summary>
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/// <param name="ability">The ability to try to stop.</param>
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/// <returns>True if the ability was stopped.</returns>
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protected virtual bool TryStopAbility(Ability ability)
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{
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return m_CharacterLocomotion.TryStopAbility(ability);
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}
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/// <summary>
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/// Executes the input event.
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/// </summary>
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/// <param name="eventName">The input event name.</param>
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protected virtual void ExecuteInputEvent(string eventName)
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{
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EventHandler.ExecuteEvent(m_GameObject, eventName);
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}
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/// <summary>
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/// Executes the axis input event.
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/// </summary>
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/// <param name="eventName">The input event name.</param>
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/// <param name="axisValue">The value of the axis.</param>
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protected virtual void ExecuteInputEvent(string eventName, float axisValue)
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{
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EventHandler.ExecuteEvent<float>(m_GameObject, eventName, axisValue);
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}
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/// <summary>
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/// The character has died. Disable the handler.
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/// </summary>
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/// <param name="position">The position of the force.</param>
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/// <param name="force">The amount of force which killed the character.</param>
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/// <param name="attacker">The GameObject that killed the character.</param>
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private void OnDeath(Vector3 position, Vector3 force, GameObject attacker)
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{
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enabled = false;
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}
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/// <summary>
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/// The character has respawned. Enable the handler.
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/// </summary>
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protected virtual void OnRespawn()
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{
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enabled = true;
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// Call update immediately to force the horizontal, forward, and look rotation values to update before FixedUpdate is called.
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Update();
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}
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/// <summary>
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/// Enables or disables gameplay input. An example of when it will not be enabled is when there is a fullscreen UI over the main camera.
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/// </summary>
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/// <param name="enable">True if the input is enabled.</param>
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private void OnEnableGameplayInput(bool enable)
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{
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enabled = m_InputEnabled = enable;
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if (!m_InputEnabled) {
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m_HorizontalMovement = m_ForwardMovement = 0;
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if (m_CharacterLocomotion.KinematicObjectIndex != -1) {
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KinematicObjectManager.SetCharacterMovementInput(m_CharacterLocomotion.KinematicObjectIndex, 0, 0);
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}
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}
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}
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/// <summary>
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/// The character has been destroyed.
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/// </summary>
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private void OnDestroy()
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{
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if (m_PlayerInput != null) {
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EventHandler.UnregisterEvent<Ability, bool>(m_GameObject, "OnCharacterAbilityActive", OnAbilityActive);
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EventHandler.UnregisterEvent<ItemAbility, bool>(m_GameObject, "OnCharacterItemAbilityActive", OnItemAbilityActive);
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EventHandler.UnregisterEvent<int, int>(m_GameObject, "OnItemSetManagerUpdateItemSet", OnUpdateItemSet);
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EventHandler.UnregisterEvent<Vector3, Vector3, GameObject>(m_GameObject, "OnDeath", OnDeath);
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EventHandler.UnregisterEvent(m_GameObject, "OnRespawn", OnRespawn);
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EventHandler.UnregisterEvent<bool>(m_GameObject, "OnEnableGameplayInput", OnEnableGameplayInput);
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}
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}
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}
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}
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