koobas.hobune.stream
find size of a prefab that is spawned from an array
Hello, I recently started with Unity and C# so I am fairly new and encountered this obstacle I can't find solution for. I am randomly spawning differently sized(i have 6 prefabs) platforms from an array. I want the next platform to be spawned after the previous one with a some kind of gap(that the player is available to jump over) and for this i need to know width of the spawned platform(prefab). The "spawner" itself is working I mean it spawns platforms, but I have problems with position. I searched all over but I don't seem to find anything related to this situation. I tried using bounds.size but i get the following error:
error CS0120: An object reference is required to access non-static member `UnityEngine.Collider2D.bounds'
I attach my current code of the spawner and would really appreciate any help or hints. Thank you in advance.
using UnityEngine;
using System.Collections;
public class PlatformSpawnScript : MonoBehaviour {
public GameObject[] platforms;
public int maxPlatforms = 10;
public float horizontalMin = 1f;
public float horizontalMax = 5f;
private Vector2 startingPosition;
// Use this for initialization
void Start () {
startingPosition = transform.position;
spawn ();
}
void spawn (){
for (int i = 0; i < maxPlatforms; i++) {
Instantiate(platforms[Random.Range (0, 5)], startingPosition, Quaternion.identity);
startingPosition += (Collider2D.bounds.size.x + Random.Range[1f, 5f]);
}
}
}
First, to access .bounds you need a reference to the object, of which you're trying to find the bounds. This means, you need to create a variable of type Collider2D and fill it either via the inspector or by finding it via code and then you have something like:
Collider2D lastCollider = platforms[lastIndex]; //or
public Collider2d collider;
//and then
collider.bounds.size.x
Other than that, maybe this tutorial helps: http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/infinite-runner
using UnityEngine;
using System.Collections;
public class PlatformSpawnScript : $$anonymous$$onoBehaviour {
public GameObject[] platforms;
public int maxPlatforms = 10;
private Vector2 startingPosition;
// Use this for initialization
void Start () {
startingPosition = transform.position;
spawn ();
}
void spawn (){
for (int i = 0; i < maxPlatforms; i++) {
int lastIndex = Random.Range(0, 5);
GameObject platform = platforms[lastIndex];
Instantiate(platforms[lastIndex], startingPosition, Quaternion.identity);
Collider2D lastCollider = platform.GetComponent<Collider2D>();
startingPosition += new Vector2 ((lastCollider.bounds.size.x + Random.Range(1f, 5f)), 0);
}
}
}
Thank you ,this is how I tried and it kinda works, but platforms still spawn like one on another I mean has one part of a platform on top of another and the next platform also has part of it on another, do I get wrong size or something? if ins$$anonymous$$d of that I try to just add a gap of like 10 or sth, gaps become too big or still longer platforms get on top. $$anonymous$$aybe my code is calculating it wrong?
Collider2D is a component. On line 28 use
GetComponent<Collider2D>().bounds.size.x
