Initial commit

scripts/MultiParticles.cs

@@ -0,0 +1,68 @@
+using Godot;
+using System;
+
+namespace Isometric3DEngine
+{
+    /**
+     * MultiParticles : Node3D
+     *
+     * This class turns possible to control multiple particles in sync.
+     * Inspired by https://www.reddit.com/r/godot/comments/181ui9c/comment/kaewcca/?context=3
+     */
+    public partial class MultiParticles : Node3D
+    {
+        [Export]
+        public bool Emitting = true;
+
+        [Export]
+        public bool OneShot = false;
+
+        [Export]
+        public Godot.Collections.Array<GpuParticles3D> Particles;
+
+        double Lifetime = 0.0f;
+
+        public override void _Ready()
+        {
+            if (Emitting)
+            {
+                StartEmitters();
+            }
+        }
+
+        void GetLifetime()
+        {
+            foreach (var particle in Particles)
+            {
+                if (particle.Lifetime > Lifetime)
+                {
+                    Lifetime = particle.Lifetime;
+                }
+            }
+        }
+
+        public async void StartEmitters()
+        {
+            GetLifetime();
+
+            foreach (var particle in Particles)
+                particle.Emitting = true;
+
+            await ToSignal(GetTree().CreateTimer(Lifetime), SceneTreeTimer.SignalName.Timeout);
+            DisposeOfEmitters();
+
+            if (!OneShot)
+            {
+                StartEmitters();
+            }
+        }
+
+        void DisposeOfEmitters()
+        {
+            foreach (var particle in Particles)
+            {
+                particle.Emitting = false;
+            }
+        }
+    }
+}