Procedural generation of prefab objects

There is t$$anonymous$$s thread -

http://answers.unity3d.com/questions/58505/procedural-level-generation-for-a-3d-side-scroller.html

unfortunately the link is dead. The code is in JS and I haven't looked at it myself but a quick read through the thread seemed to give some answers that might help you.

:)

As long as you know the exact size of your premade objects(prefabs) it might be easier just to instantiate the new pieces relative to the last pieces position.

Doh, how do I explain that easier?

AS long as you know the co-ordinates of you first piece (say X = 0, Y = 0, Z = 0) and your first piece is 4x4 in size. Then just instantiate your next piece at 0, 0, z+2.

Make your prefab parts list into an array. Use random (random.range) to pick a new piece to place.

Have triggers on each of your pieces and a simple Boolean (isPlaced) to turn off the trigger once it has been activated to stop any additional placement if you walk on the same piece twice.

Ok I've got t$$anonymous$$s for you (well to be honest for me, but your question/idea game me an idea for my project....lol

Anyway... use t$$anonymous$$s script (tested and works)

 using UnityEngine;
 using System.Collections;
 
 public class SpawnNextSection : MonoBehaviour
 {
     public Transform[] nextSection;
     
 
     void OnTriggerEnter(Collider other)
     {
         int randomSection = Random.Range(0,nextSection.Length);
 
         if (other.tag == "Player")
         {
             Debug.Log ("Triggered");
 
             Vector3 spawnPosition = transform.parent.position + new Vector3 (0, 0, 8);
             Quaternion spawnRotation = Quaternion.identity;
             Instantiate (nextSection[randomSection], spawnPosition, spawnRotation);
         }
     }    
 }
 

Just add your prefabs to the script in the inspector. Make sure they have a collider (or add an empty game object and give it a box collider) and your good to go.

T$$anonymous$$s is very basic and assumes all your prefabs are the same length. Assuming they are just make the last section of the vector 3 the same as your prefab length (the bit I have listed as 8 just replace with the length of your prefab)

Like I said its quite basic (maybe some of the more experienced guys here will help you flesh it out a bit) but its a start for you.

enjoy

:)