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58 行
1.3 KiB
58 行
1.3 KiB
using UnityEngine;
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using UnityEngine.AI;
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public class RoamingMovementAction : NPCMovementAction
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{
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private NavMeshAgent _agent;
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private bool _isActiveAgent;
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private Vector3 _startPosition;
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private float _roamingSpeed;
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private float _roamingDistance;
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private Vector3 _roamingTargetPosition;
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public RoamingMovementAction(
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RoamingAroundCenterConfigSO config, NavMeshAgent agent, Vector3 startPosition)
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{
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_agent = agent;
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_isActiveAgent = _agent != null && _agent.isActiveAndEnabled && _agent.isOnNavMesh;
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if (config.FromSpawningPoint)
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{
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_startPosition = startPosition;
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}
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else
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{
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_startPosition = config.CustomCenter;
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}
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_roamingSpeed = config.Speed;
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_roamingDistance = config.Radius;
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}
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public override void OnUpdate()
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{
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}
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public override void OnStateEnter()
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{
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if (_isActiveAgent)
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{
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_roamingTargetPosition = GetRoamingPositionAroundPosition(_startPosition);
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_agent.speed = _roamingSpeed;
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_agent.isStopped = false;
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_agent.SetDestination(_roamingTargetPosition);
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}
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}
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public override void OnStateExit()
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{
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}
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// Compute a random target position around the starting position.
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private Vector3 GetRoamingPositionAroundPosition(Vector3 position)
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{
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return position + new Vector3(Random.Range(-1, 1), 0.0f, Random.Range(-1, 1)).normalized * Random.Range(_roamingDistance / 2, _roamingDistance);
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}
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}
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