有人可以告诉我AddForce和transform.translate之间的区别吗？

Question

I am trying to move a gameobject but I found these two most popular functions to move the object. The difference I know between these two is that there is a rigidbody needed in using AddForce but no Rigidbody needed in Transform.translate. I just wanted to make sure that I am using right function for game. Is there anny difference in the functionality of these two function? I am moving a cube over an infinite plane with obstacles in the way. I think rigidbody is needed ofcourse but I want to know what is the use of Transform.translate?

Answer 1

transform.translate:

With this method you basically teletransport the GameObject, not taking in account physics nor colliders. This one is pretty expensive if you have a RigidBody attached.

AddForce:

With this one you are adding force to the RigidBody of the GameObject, so all the movement will be taking physics and colliders into account.

If you need to move a RigidBody (like a Player) I recommend using MovePosition . It's more precise than AddForce and use the physics motor.

EDIT:

Example:

public float movementSpeed= 5f; //for instance

void FixedUpdate()
{

    Vector3 direction = new Vector3(Input.GetAxisRaw("Horizontal"), 0 , Input.GetAxisRaw("Vertical"));
    rigidbody.MovePosition(transform.position + direction * movementSpeed * Time.fixedDeltaTime);
}

Tweak movementSpeed to go faster or slower.

Didn't test the code but it should work.

Answer 2

有时您不想在游戏中使用物理，因为它需要大量的计算能力，而且还有许多其他用例，开发人员无需使用物理来移动对象或与其他对象发生碰撞是不重要。