从下一个实例化更改实例化游戏对象的移动
我正在使用 Unity 和 C#。
在我的游戏中，敌人被反复实例化并以线性路径向玩家移动。我想让敌人在经过特定时间后以正弦波移动，以使游戏更加艰难。
运动会立即发生变化，但我希望这种变化从新（下一个）敌人的实例化而不是当前存在的敌人的实例化生效。
我能做什么？
EnemySpawner 脚本 -
private void Start()
{
timeelapsed = 0f;
StartCoroutine(SpawnEnemies(delay));
}
private void Update()
{
timeelapsed += Time.deltaTime;
}
private IEnumerator SpawnEnemies(float delay)
{
while (true)
{
SpawnNewEnemy();
yield return new WaitForSeconds(delay);
}
}
private void SpawnNewEnemy()
{
if (!enemyclone)
{
enemyclone = Instantiate(enemy, enemySpawner.transform.position + offset, Quaternion.identity);
}
}
Enemy Movement 脚本：
private void Update()
{
t = Time.time;
if (EnemySpawner.timeelapsed > 0f && EnemySpawner.timeelapsed <= 20f)
{
enemy.transform.Translate(Vector3.forward * speed * Time.deltaTime);
}
if (EnemySpawner.timeelapsed > 20f && EnemySpawner.timeelapsed <= 40f)
{
enemy.GetComponent<Rigidbody>().velocity = Vector3.forward * 5 + Vector3.left * 3 * Mathf.Sin(10f * t);
}
}
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2回答
-
富国沪深
有上千种方法可以实现这一点，但我认为可能易于实现和理解的一种方法是设置 Action，当您从 spawner 实例化一个新敌人时会触发它。我很快就为您的 EnemySpawner 和 EnemyMovement 脚本编写了一些我认为可能对您有所帮助的更改。首先，EnemySpawner：public static event Action EnemySpawning;void SpawnNewEnemy ( ){ if ( !enemyclone ) { EnemySpawning?.Invoke ( ); enemyclone = Instantiate ( enemy, enemySpawner.transform.position + offset, Quaternion.identity ); }}现在，敌人运动：private bool travelInLinearPath = true;private void OnEnable ( ){ EnemySpawner.EnemySpawning -= OnEnemySpawning; EnemySpawner.EnemySpawning += OnEnemySpawning; travelInLinearPath = true;}public void OnEnemySpawning( ){ EnemySpawner.EnemySpawning-= OnEnemySpawning; travelInLinearPath = false;}private void Update ( ){ if ( travelInLinearPath ) enemy.transform.Translate ( Vector3.forward * speed * Time.deltaTime ); else enemy.GetComponent<Rigidbody> ( ).velocity = Vector3.forward * 5 + Vector3.left * 3 * Mathf.Sin ( 10f * Time.time );}每次启用敌人时，您都要求在下一个敌人即将产生时收到通知。发生这种情况时，您告诉这个敌人从线性运动变为正弦运动 ( travelInLinearPath)。您还要求在产生新敌人时不再通知该敌人（除非您重新启用该敌人）。我也没有讨论你是否应该从敌人对象池中抓取一个新的敌人。但希望你这样做是我在OnEnable(). 您可能希望/需要将该代码放入其中，Start()这取决于您在游戏后期的敌人实例化和创建。 -
慕村9548890
现在知道请求是针对敌人的“波浪”，我们需要向每个敌人添加波浪定义项目。因此，首先修改EnemyMovement脚本：public class EnemyMovement : MonoBehaviour{ public enum MovementType { None = 0, Linear = 1, Sinusoidal = 2 // etc, etcc } /// <summary> /// Movement affects the movement type of the enemy. /// </summary> public MovementType Movement { get; set; } /// <summary> /// This affects the Speed of the Enemy. Used in conunction with Movement to /// produce the enenmy's wave movement type. /// </summary> public float Speed { get; set; } private Rigidbody rigidBody; private void Awake ( ) { rigidBody = GetComponent<Rigidbody> ( ); } private void Update ( ) { switch ( Movement) { case MovementType.Linear: transform.Translate ( Vector3.forward * Speed * Time.deltaTime ); break; case MovementType.Sinusoidal: // You probably want the Speed property to affect this as well... rigidBody.velocity = Vector3.forward * 5 + Vector3.left * 3 * Mathf.Sin ( 10f * Time.time ); break; // Any extra movement types you want here... } }}然后是EnemySpawner驱动 Enemy 实例化的脚本：public class EnemySpawner : MonoBehaviour{ public float Delay; public float StartSpeed; public GameObject enemy; public GameObject enemySpawner; public Vector3 offset; private float timeElapsed; private float currentSpeed; private EnemyMovement.MovementType currentMovement; void Start ( ) { timeElapsed = 0f; currentSpeed = StartSpeed; StartCoroutine ( SpawnEnemies ( Delay ) ); currentMovement = EnemyMovement.MovementType.Linear; } void Update ( ) { timeElapsed += Time.deltaTime; // We can determine at what time the Wave parameters change here. if ( timeElapsed >= 40.0f ) { currentSpeed += 10.0f; // Add speed, for example. } else if ( timeElapsed >= 20.0f ) { currentMovement = EnemyMovement.MovementType.Sinusoidal; } } IEnumerator SpawnEnemies ( float delay ) { while ( true ) { var enemyClone = Instantiate ( enemy, enemySpawner.transform.position + offset, Quaternion.identity ); var movement = enemyClone.GetComponent<EnemyMovement> ( ); // We now set what the enemy uses as the Wave values. movement.Speed = currentSpeed; movement.Movement = currentMovement; yield return new WaitForSeconds ( delay ); } }}
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