通过实例化 function (Unity C#) 创建猎枪射击

Question

I have problem with instantiate function, if I shoot in different rotation, shape of this shoot changed. In x axis (streaight from respawn) it looks good (cone), but for example in y axis it looks "flat". Any ideas how to fix it? Code here:

pellets[i] = Random.rotation;
p = (GameObject)Instantiate(pellet, barrelExit.position, barrelExit.rotation);
Destroy(p, lifeTime);
p.transform.rotation = Quaternion.RotateTowards(p.transform.rotation, pellets[i], spreadAngle);
p.GetComponent<Rigidbody>().AddForce(p.transform.right * pelletFireVelocity);

Answer 1

I don't fully understand your use of RotatateTowards by fixed angle instead of randomizing it feels like it would generate more or less empty cone, however might not understand that. I think you should replace spreadAngle with Random.Range(0.f, spreadAngle)

Also on the side note I think you should give a try to object pooling.

Answer 2

Random.rotation is inappropriate here. You're not interested in sampling from every possible rotation, only rotations around your camera's forward.

Instead, use Random.Range to get a value between -spreadAngle and spreadAngle . Then, you can rotate that much around your camera's forward using Quaternion.AngleAxis and multiplying the result by the barrel's rotation.

This is also preferable to using RotateTowards to clamp your spray, as that would result in more pellets being fired around the edges of the spray. Using Random.Range and Quaternion.AngleAxis will result in a uniform distribution.:

Camera mainCam; // cache result of Camera.main here for performance

Start()
{
...
    mainCam = Camera.main;
...
}

...

float randomAngle = Random.Range(-spreadAngle, spreadAngle);
pellets[i] = Quaternion.AngleAxis(randomAngle, mainCam.forward) * barrelExit.rotation;
p = (GameObject)Instantiate(pellet, barrelExit.position, barrelExit.rotation);
Destroy(p, lifeTime);
p.transform.rotation = pellets[i]; 
p.GetComponent<Rigidbody>().AddForce(p.transform.right * pelletFireVelocity);

By the way, you should consider pooling these pellets, rather than creating and destroying many of them at a time.