Random Particles

Main.cs

@@ -1,18 +1,37 @@
 using Godot;
-using System;
 
 public class Main : Node2D
 {
     public override void _Ready()
     {
-        
+        GD.Randomize();
+        InitializeParticles();
     }
 
     public override void _Process(float delta)
     {
-        if (Input.IsActionJustPressed("quit"))
+        if (Input.IsActionJustPressed("quit")) GetTree().Quit();
-        {
+        if (Input.IsActionJustPressed("reset")) GetTree().ReloadCurrentScene();
-            GetTree().Quit();
     }
+
+    private void InitializeParticles()
+    {
+        var particleScene = GD.Load<PackedScene>("res://Particle.tscn");
+        for (var i = 0; i < 50; i++)
+        {
+            var particle = particleScene.Instance<Particle>();
+            GetNode<Node2D>("Particles").AddChild(particle);
+            particle.Position = GetRandomParticlePosition();
+            particle.Hue = (float) GD.RandRange(0, 1);
+        }
+    }
+
+    private Vector2 GetRandomParticlePosition()
+    {
+        const int padding = 32;
+        var viewportRect = GetViewportRect();
+        var position = new Vector2((float) GD.RandRange(padding, viewportRect.Size.x - padding),
+            (float) GD.RandRange(padding, viewportRect.Size.y - padding));
+        return position;
     }
 }

Main.tscn

@@ -4,3 +4,5 @@
 
 [node name="Main" type="Node2D"]
 script = ExtResource( 1 )
+
+[node name="Particles" type="Node2D" parent="."]

Particle.cs

@@ -0,0 +1,22 @@
+using Godot;
+
+public class Particle : Node2D
+{
+    private float _spriteHue;
+    private Sprite _spriteNode;
+
+    public float Hue
+    {
+        get => _spriteHue;
+        set
+        {
+            _spriteHue = Mathf.Clamp(value, 0, 1);
+            _spriteNode.Modulate = Color.FromHsv(_spriteHue, 1, 1);
+        }
+    }
+
+    public override void _Ready()
+    {
+        _spriteNode = GetNode<Sprite>("Sprite");
+    }
+}

Particle.tscn

@@ -0,0 +1,10 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://textures/particle.png" type="Texture" id=1]
+[ext_resource path="res://Particle.cs" type="Script" id=2]
+
+[node name="Particle" type="Node2D"]
+script = ExtResource( 2 )
+
+[node name="Sprite" type="Sprite" parent="."]
+texture = ExtResource( 1 )

default_env.tres

@@ -1,7 +0,0 @@
-[gd_resource type="Environment" load_steps=2 format=2]
-
-[sub_resource type="ProceduralSky" id=1]
-
-[resource]
-background_mode = 2
-background_sky = SubResource( 1 )

project.godot

@@ -28,6 +28,11 @@ quit={
 "events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":0,"physical_scancode":16777217,"unicode":0,"echo":false,"script":null)
  ]
 }
+reset={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":0,"physical_scancode":82,"unicode":0,"echo":false,"script":null)
+ ]
+}
 
 [physics]
 
@@ -38,4 +43,4 @@ common/enable_pause_aware_picking=true
 quality/driver/driver_name="GLES2"
 vram_compression/import_etc=true
 vram_compression/import_etc2=false
-environment/default_environment="res://default_env.tres"
+environment/default_clear_color=Color( 0, 0, 0, 1 )

textures/particle.png.import

@@ -0,0 +1,35 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/particle.png-6bc2982443cc9a0ea7820fc4c0d2daf7.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://textures/particle.png"
+dest_files=[ "res://.import/particle.png-6bc2982443cc9a0ea7820fc4c0d2daf7.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0