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using UnityEngine; |
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using UnityEngine.AI; |
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using UOP1.StateMachine; |
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using UOP1.StateMachine.ScriptableObjects; |
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[CreateAssetMenu(fileName = "RoamingAroundSpawningPositionAction", menuName = "State Machines/Actions/Roaming Around Spawning Position Action")] |
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public class RoamingAroundSpawningPositionActionSO : StateActionSO |
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{ |
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[Tooltip("NPC roaming speed.")] |
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[SerializeField] private float _roamingSpeed = default; |
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[Tooltip("How far the NPC can roam around its spawning point.")] |
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[SerializeField] private float _roamingDistance = default; |
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public float RoamingSpeed => _roamingSpeed; |
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public float RoamingDistance => _roamingDistance; |
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protected override StateAction CreateAction() => new RoamingAroundSpawningPositionAction(); |
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} |
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public class RoamingAroundSpawningPositionAction : StateAction |
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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 override void Awake(StateMachine stateMachine) |
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{ |
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RoamingAroundSpawningPositionActionSO config = (RoamingAroundSpawningPositionActionSO)OriginSO; |
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_agent = stateMachine.gameObject.GetComponent<NavMeshAgent>(); |
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_isActiveAgent = _agent != null && _agent.isActiveAndEnabled && _agent.isOnNavMesh; |
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_startPosition = stateMachine.gameObject.transform.position; |
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_roamingSpeed = config.RoamingSpeed; |
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_roamingDistance = config.RoamingDistance; |
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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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} |
Yohann Puyhaubert
4 年前