How to make Random.Range() step by a certain amount?

Questions & Answers
1

I doubt that the title alone is enough information to understand the question I’m asking, so I’ll ask by example:

In my game my enemies have a certain minSpawnHealth and maxSpawnHealth variable which determines the current health of my enemy on spawn. This way when the enemies spawn they can have a randomized amount of health between the min and the max. In order to find that randomized health I’m using “Random.Range(minSpawnHealth, maxSpawnHealth+1)”, which is pretty standard.

However, I want the returned value of Random.Range() to step by a certain amount, say 5 or 10.

Let’s say that minSpawnHealth is 10 and maxSpawnHealth is 30, so that a new enemy could spawn somewhere between 10-30 health. I don’t want my enemy to have the possibility of spawning with 13 health, or 17 health, or 26 health, etc. I would want my enemy to spawn with health by intervals of 5 (10, 15, 20, 25, 30 health) or 10 (10, 20, 30 health), or whatever arbitrary step amount I would want Random.Range() to return.

Is there any inherent way to do this (which I haven’t found yet) or do I just have to be clever with math adjustments after the randomized value is created?

2

I think the simplest way to do this would be:

int minSpawnHealth = 10;
int maxSpawnHealth = 30;
int stepSize = 5;

int GetRandomHealth () {
    int randomHealth = Random.Range(minSpawnHealth, maxSpawnHealth);
    int numSteps = Mathf.Floor (randomHealth / stepSize);
    int adjustedHealth = numSteps * stepSize;

    return adjustedHealth;
}