Fix the Animation Color for converted Shiruken particle system

ModelMultiShurikenPersistFX.cs

@@ -620,10 +620,16 @@ public override void OnInitialize()
 
                 //particleSystemRenderer.alignment = ParticleSystemRenderSpace.View;
 
+                pkpe.doesAnimateColor = childKSPParticleEmitter.doesAnimateColor;
+
                 if (childKSPParticleEmitter.doesAnimateColor)
                 {
                     ParticleSystem.ColorOverLifetimeModule col = particleSystem.colorOverLifetime;
-                    col.enabled = true;
+
+                    // This one is annoying. The old particle system animate the color over the whole % life of the particle (0 - 1)
+                    // The new one animate it over time. So converted system may not reac the full value
+                    // The animation is set up here but disabled and the color is manually set in the update of PersistentKSPShurikenEmitter with this gradient
+                    col.enabled = false;
 
                     GradientColorKey[] colorKeys = new GradientColorKey[5];
                     GradientAlphaKey[] alphaKeys = new GradientAlphaKey[5];
@@ -634,8 +640,8 @@ public override void OnInitialize()
 
                     for (int t = 0; t < colors.Length; t++)
                     {
-                        colorKeys[t] = new GradientColorKey(colors[t], t * step);
-                        alphaKeys[t] = new GradientAlphaKey(colors[t].a, t * step);
+                        colorKeys[t] = new GradientColorKey(colors[t], 1 - t * step);
+                        alphaKeys[t] = new GradientAlphaKey(colors[t].a, 1 - t * step);
                     }
 
                     Gradient gradient = new Gradient();
@@ -971,7 +977,7 @@ public override void OnSave(ConfigNode node)
 
     private static void Print(String s)
     {
-        print("[SmokeScreen ModelMultiParticlePersistFX] " + s);
+        print("[SmokeScreen ModelMultiShurikenPersistFX] " + s);
     }
 
     // TODO : move the whole UI stuff to a dedicated class - this is getting way too big

PersistentKSPShurikenEmitter.cs

@@ -74,6 +74,7 @@ public class PersistentKSPShurikenEmitter
     public Vector3 force;
     public Vector3 rndForce;
     public Color color;
+    public bool doesAnimateColor;
 
     //private float emitterVelocityScale;
     private Vector3 rndVelocity;
@@ -543,6 +544,12 @@ public void EmitterOnUpdate(Vector3 emitterWorldVelocity)
                         ? (Vector3)pPos
                         : peTransform.InverseTransformPoint(pPos);
                 }
+
+                if (doesAnimateColor)
+                {
+                    float lifePercentage = (particle.lifetime / particle.startLifetime);
+                    particle.startColor = pe.colorOverLifetime.color.Evaluate(lifePercentage);
+                }
             }
             particles[j] = particle;
         }