koobas.hobune.stream
Instantiate objects at random positions on axis
What's the code to instantiate 4 clones of an object at 4 different positions on an axis? I tryed
Instantiate(enemy, Vector3(Random.Range(-10,10),0,15), transform.rotation);
but it doesn't work since the x value, even if it's random, is still a single value. How can i tell Unity to choose four different values (beetween -10 and 10) of the x axis?
Not quite sure what you want here - if you call this code 4 times you will get 4 different values - did you want to ensure that no 2 values were the same?
I wanted to know if there is another solution than creating 4 different Vector3 values and writing 4 times this code. Anyway, yes, how can i ensure that each of the 4 Vector3 values is different from the other ones?
I wanted to know if there is another solution than creating 4 different Vector3 values and writing 4 times this code. Anyway, yes, how can i ensure that each of the 4 Vector3 values is different from the other ones?
The chance to get two identical floating point numbers from Random.value (or Random.Range) is practically zero. However they might turn out to be really close, so I think you want some margin to make sure it isn't within some distance to the other points.
int count = 4;
float range = 10;
float margin = 1;
if (count*margin >= range*2) throw new System.Exception ("There is no possible distribution of points");
Vector3[] arr = new Vector3[count];
for (int i=0;i<count;i++) {
bool close = false;
do {
close = false;
arr[i] = new Vector3 (Random.Range (-range,range),0,15);
for (int j=0;j<i;j++) if ((arr[i]-arr[j]).sqrMagnitude < margin*margin) { close = true; break; }
} while (close);
Instantiate(enemy, arr[i], transform.rotation);
}
This code will create [count] enemies at random positions spaced at least [margin] apart at positions ranging from -[range] to [range] on the x-axis. It will also work if you expand the randomness to more than one axis. The code is written in C#. I hope I haven't made any mistakes (I typed it directly in the browser).
