2D Cloud Animation

Questions & Answers
1

I would like to animate 2D clouds (sprites) so they sway a bit in the wind. Does anyone have any idea how to do this? I thought about making it move randomly but then the cloud could eventually move too far from their original location. I am using them as obstacles so they could only move a little bit. If I used hardcoded paths, would it be too noticeable?

2

You could just code it to do something random within a certain range with a couple floats.

float maxYMove = 2.0f;
float maxXMove = 3.0f;
Vector2 intitialColudPos;
Vector2 targetPos;
float timeCount = 0.0f;

void Start(){
initialCloudPos = cloud.transform.position;
}

void Update(){
if(timeCount == 0.0f){
targetPos = new Vector2(Random.Range(initialCloudPos.x - maxXMove, initialCloudPos.x + maxXMove), Random.Range(initialCloudPos.y - maxYMove, initialCloudPos.y + maxYMove)
}

cloud.transform.position = Vector2.Lerp(cloud.transform.position, targetPos, timeCount);

if(timeCount < 1.0f){
timeCount = timeCount + Time.deltaTime;
}else
{
timeCount = 0.0f;
}
}

This will give you a new randomized location within your limited maxXMove and maxYMove and it will move to this new location every 1 second. If you want to slow it down, you can add a speed variable into the lerp time scale.