享元模式
享元模式是一种结构型模式,它通过共享技术实现大量细粒度对象的复用,从而减少系统资源的消耗,提高系统性能。在游戏开发中,享元模式常用于实现粒子系统、地形系统等。
例如,在一个射击游戏中,需要大量的子弹来实现游戏效果,可以使用享元模式来实现子弹池:
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public class Bullet {
private Vector3 position;
private Vector3 direction;
private float speed;
public Bullet(Vector3 position, Vector3 direction, float speed) {
this.position = position;
this.direction = direction;
this.speed = speed;
}
public void Move(float deltaTime) {
position += direction * speed * deltaTime;
}
}
public class BulletPool {
private Queue<Bullet> bulletPool = new Queue<Bullet>();
public Bullet GetBullet(Vector3 position, Vector3 direction, float speed) {
if (bulletPool.Count > 0) {
Bullet bullet = bulletPool.Dequeue();
bullet.MoveTo(position);
bullet.SetDirection(direction);
bullet.SetSpeed(speed);
return bullet;
} else {
return new Bullet(position, direction, speed);
}
}
public void RecycleBullet(Bullet bullet) {
bulletPool.Enqueue(bullet);
}
}
// 调用代码
BulletPool bulletPool = new BulletPool();
Bullet bullet = bulletPool.GetBullet(new Vector3(0, 0, 0), new Vector3(1, 0, 0), 10f);
bullet.Move(0.1f);
bulletPool.RecycleBullet(bullet);
下面是一些高级用法
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