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Wind direction
In my game, i want to include wind with random speed and direction. The speed and direction of the wind should be shown while playing. I know how to do it for speed but not about the direction. Can anyone please tell me how to randomize the direction of the wind and simultaneously print it on the screen with some arrow?
Answer by robertbu · Aug 14, 2013 at 07:18 AM
You have provided very few specifics with your question. Here is a script to get you started. You can test it by putting it on a cube. It it intended to be put on an arrow in the scene where the head of the arrow points to positive 'z' with a rotation of (0,0,0). It rotates an arrow in a rough wind-like movement. More work is needed if you want a 'realistic' movement. The transform.forward of the object you attach this to should be used as the wind direction however you implement wind. Since I don't know any of the specifics of how or format of the output, I'll leave that to you. Currently it does a Debug.Log() of an angle:
#pragma strict
var minChangeSpeed = 0.5;
var maxChangeSpeed = 2.0;
var maxChange = 45.0;
var minChangeTime = 1.0;
var maxChangeTime = 2.5;
private var qTo = Quaternion.identity;
private var changeSpeed = 0.0;
function Start () {
Invoke("ChangeWind", 0.0);
}
function ChangeWind() {
changeSpeed = Random.Range(minChangeSpeed, maxChangeSpeed);
qTo = Quaternion.AngleAxis(Random.Range(-maxChange, maxChange), Vector3.up) * transform.rotation;
Invoke("ChangeWind", Random.Range(minChangeTime, maxChangeTime));
}
function Update () {
transform.rotation = Quaternion.Slerp(transform.rotation, qTo, changeSpeed * Time.deltaTime);
Debug.Log(Mathf.Atan2(transform.forward.z, transform.forward.x)*Mathf.Rad2Deg + 180.0);
}
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