Adding lightning example to the project

Author: Ricardo J. Mendez

Assets/Models/Artwork/Lightning Mat.mat

@@ -0,0 +1,122 @@
+/*
+	This script is placed in public domain. The author takes no responsibility for any possible harm.
+	Contributed by Jonathan Czeck
+*/
+using UnityEngine;
+using UnitySteer.Vehicles;
+using System.Collections;
+
+public class LightningBolt : MonoBehaviour
+{
+	public Transform target;
+	public int zigs = 100;
+	public float speed = 1f;
+	public float scale = 1f;
+	public Light startLight;
+	public Light endLight;
+	
+	Perlin noise;
+	float oneOverZigs;
+	
+	private Particle[] particles;
+	private Rope[] vehicles;
+	
+	void Start()
+	{
+		oneOverZigs = 1f / (float)zigs;
+		particleEmitter.emit = false;
+
+		particleEmitter.Emit(zigs);
+		particles = particleEmitter.particles;
+		vehicles = new Rope[particles.Length];
+		RandomizeParticlePositions();
+
+		for(int i = 0; i < particles.Length; i++)
+		{
+		    // Transform t = new Transform();
+		    vehicles[i] = new Rope(particles[i].position, 0.1f, null, null);
+		    
+		    vehicles[i].Mass = 0.1f;
+		    vehicles[i].Radius = 0.05f;
+		    vehicles[i].MaxSpeed = 5f;
+		    vehicles[i].MaxForce = 10f;
+		}
+		for(int i = 0; i < particles.Length - 1; i++)
+		{
+		    // Transform t = new Transform();
+		    vehicles[i].Next = vehicles[i+1];
+		    if (i > 0)
+		    {
+		        vehicles[i].Previous = vehicles[i-1];
+	        }
+		}
+	}
+	
+	void Update ()
+	{
+	    // RandomizeParticlePositions(true);
+		RandomizeParticlePositions(particles.Length - 1);
+	    // Randomize the position of the last particle only
+		vehicles[particles.Length-1].Position = particles[particles.Length-1].position;
+		for(int i = 0; i < particles.Length -1; i++)
+		{
+		    vehicles[i].Position = particles[i].position;
+		    vehicles[i].update(Time.time, Time.deltaTime);
+		    particles[i].position = vehicles[i].Position;
+		}
+		
+		particleEmitter.particles = particles;
+		
+		if (particleEmitter.particleCount >= 2)
+		{
+			if (startLight)
+				startLight.transform.position = particles[0].position;
+			if (endLight)
+				endLight.transform.position = particles[particles.Length - 1].position;
+		}
+	}	
+	
+	void RandomizeParticlePositions()
+	{
+	    RandomizeParticlePositions(0, false);
+	}
+	
+	void RandomizeParticlePositions(int startIndex)
+	{
+	    RandomizeParticlePositions(startIndex, false);
+	}
+
+	void RandomizeParticlePositions(bool isOffset)
+	{
+	    RandomizeParticlePositions(0, isOffset);
+	}
+	
+	void RandomizeParticlePositions(int startIndex, bool isOffset)
+	{
+		if (noise == null)
+			noise = new Perlin();
+			
+		float timex = Time.time * speed * 0.1365143f;
+		float timey = Time.time * speed * 1.21688f;
+		float timez = Time.time * speed * 2.5564f;
+		/*
+		float timey = Time.time * speed * 0.21688f;
+		float timez = Time.time * speed * 0.2564f;
+		*/
+		
+		for (int i = startIndex; i < particles.Length; i++)
+		{
+		    Vector3 position = isOffset ? particles[i].position
+		                            : Vector3.Lerp(transform.position, target.position, oneOverZigs * (float)i);
+			Vector3 offset = new Vector3(noise.Noise(timex + position.x, timex + position.y, timex + position.z),
+										noise.Noise(timey + position.x, timey + position.y, timey + position.z),
+										noise.Noise(timez + position.x, timez + position.y, timez + position.z));
+			position += (offset * scale * ((float)i * oneOverZigs));
+			
+			particles[i].position = position;
+			particles[i].color = Color.white;
+			particles[i].energy = 1f;
+			// Debug.Log("new pos for "+i+" "+position);
+		}
+	}
+}