unity学习笔记之物体移动

让物体运动的三种方法

void Start () {
}

void Update () {
gameObject.transform.Translate (-5 * Time.deltaTime, 0f, 0f, Space.Self);
}

float upspeed = 9f;
float downspeed = -5f;

Vector2 up;
Vector2 down;
Rigidbody2D rbody;

bool isground = false;
bool isduck = false;

void Start () {
up = new Vector2 (0f,upspeed);
down = new Vector2 (0f, downspeed);
rbody = gameObject.GetComponent<Rigidbody2D> ();
}

void Update () {
}
void FixedUpdate(){
if (Input.GetKeyDown (KeyCode.W) && isground)
rbody.velocity = up;
}

void FixedUpdate() {
rigidbody.AddForce(0, 10, 0);
}