122 lines
3.2 KiB
C#
122 lines
3.2 KiB
C#
using UnityEngine;
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using UnityEngine.AI;
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using System.Collections;
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[RequireComponent(typeof(NavMeshAgent))]
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public class FreezableNavAgent : MonoBehaviour, IFreezable
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{
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[Header("Optional")]
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[SerializeField] Animator animator; // optional: pause/resume anim
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[SerializeField] string speedParam = "Speed"; // optional: set 0 while frozen
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// Saved agent settings
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float _origSpeed, _origAccel, _origAngSpeed;
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bool _frozen;
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Coroutine _freezeCo;
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NavMeshAgent _agent;
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void Awake()
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{
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_agent = GetComponent<NavMeshAgent>();
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if (!animator) animator = GetComponentInChildren<Animator>();
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CacheOriginals();
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}
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void OnEnable() { CacheOriginals(); }
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void CacheOriginals()
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{
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if (_agent == null) return;
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_origSpeed = _agent.speed;
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_origAccel = _agent.acceleration;
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_origAngSpeed = _agent.angularSpeed;
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}
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public void Freeze(float duration)
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{
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// If already frozen, refresh duration
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if (_freezeCo != null) StopCoroutine(_freezeCo);
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_freezeCo = StartCoroutine(FreezeRoutine(duration));
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}
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IEnumerator FreezeRoutine(float duration)
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{
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// Enter freeze
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if (!_frozen) EnterFreeze();
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// Wait for duration
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float t = duration;
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while (t > 0f)
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{
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t -= Time.deltaTime;
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yield return null;
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}
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// Exit
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ExitFreeze();
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_freezeCo = null;
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}
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void EnterFreeze()
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{
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_frozen = true;
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// Stop movement immediately
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if (_agent)
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{
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_agent.isStopped = true; // halts pathfinding updates
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_agent.ResetPath(); // clear current path
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_agent.velocity = Vector3.zero;
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// Optional: zero out movement-related params to avoid jitter
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_agent.speed = 0f;
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_agent.acceleration = 0f;
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_agent.angularSpeed = 0f;
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}
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// Pause animations
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if (animator)
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{
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animator.speed = 0f;
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if (!string.IsNullOrEmpty(speedParam) && animator.HasParameterOfType(speedParam, AnimatorControllerParameterType.Float))
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animator.SetFloat(speedParam, 0f);
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}
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}
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void ExitFreeze()
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{
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_frozen = false;
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if (_agent)
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{
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// Restore movement settings
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_agent.speed = _origSpeed;
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_agent.acceleration = _origAccel;
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_agent.angularSpeed = _origAngSpeed;
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_agent.isStopped = false;
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}
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if (animator)
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{
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animator.speed = 1f;
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// (Your AI animation controller will resume updating speedParam from its movement script)
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}
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}
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// Handy debug
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[ContextMenu("Debug/Freeze 2s")]
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void DebugFreeze2() => Freeze(2f);
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}
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// Small helper so we can safely check an Animator param
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static class AnimatorExt
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{
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public static bool HasParameterOfType(this Animator self, string name, AnimatorControllerParameterType type)
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{
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foreach (var p in self.parameters)
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if (p.type == type && p.name == name) return true;
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return false;
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}
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}
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