koobas.hobune.stream
How to repeat a random result
Hi, guys:
Apparently I have the opposite problem to everyone else: I want to repeat a random result.
My code is this:
void random_gen(){
for (int i=0;i<4000;i++){
Random.seed=3;
int posRand = Random.Range(0,2000);
array1[i]=posRand;
}
}
But array1 gets different values all the time. I dont want to generate 4000 numbers by hand and write it in script definitions, but i want the same array result in every run of the game. Do you figure out something?
Yes, that's odd. Code looks good. I would expect every number in the array to be the same
Can you try System.Random? Just to see if that behaves as expected.
You are changing the seed every loop. Take Random.seed=3; and pull it out of the loop, and make 3 a bigger number, just put a constant in it (Not too large though). Another option is a custom number generator. Take this for example:
void random_gen() {
for( int i = 0; i < 4000; i++ ) {
uint Seed = (uint)(bignum + bignum*i);
Seed = (uint)(Mathf.Abs((69621*Seed)% 2000 ));
array[i] = (int)Seed;
}
}
bignum is just your seed, which can be an arbitrary number.
If i do:
void random_gen(){Random.seed=1212;for (int i=0;i<4000;i++){int posRand = Random.Range(0,2000);array1[i]=posRand;}}
the result is the same (different arrays every call).
Your random generator is kinda cool, but it has the same result as:
void random_gen() {
for( int i = 1; i <= 4000; i++ ) {
uint Seed = (uint)bignum*i;
Seed = (uint)(69621*Seed)% 2000;
array[i] = (int)Seed;
}
}
And actually bignum is not needed, as the result will always be a number between 0 and 2000. The only problem is 69621 may be too litle in comparison to 2000, so you can add 2 or 3 more digits and it's done.
I will use this number generator for my code as it fits my purposes but i will keep the question open to see if anyone has the key for the random function and the seed behaviour.
You can always use the .NET/Mono Random class.
using System.Random;
// ...
void random_gen() {
for (int i=0; i < 4000; i++) {
System.Random random = new System.Random(3);
array1[i] = random.Next(2000);
}
}
Sorry, i forgot to update the script (i had it copied). My code works with seed inside and outside the loop.
