Color over lifetime
- Game Development course
- Intermediate
- Lesson 39/83
- 4 min
Learn particle color with Color over Lifetime.
Color over Lifetime Module
Particles do not need to remain a static color throughout their lifespan. The Color over Lifetime module controls how a particle's color and transparency (alpha) evolve from birth to death. This allows flame particles to transition from yellow to red, and finally into grey smoke.
var col = ps.colorOverLifetime;
col.enabled = true;Color and Transparency Transitions with Gradient
Color transition is defined using a Gradient structure. Gradients contain color keys and alpha keys. For instance, configuring a particle to spawn fully visible (alpha = 1) and fade away gently upon death (alpha = 0) is achieved through these keys.
// Color and transparency change over time in Gradient:
// Start: White, End: TransparentPractice Enable Color Module
Set col.enabled to true and print it with Debug.Log("Renk modulu: " + col.enabled);.
Starter code
using System;
public class ColorOverLifetimeModule
{
public bool enabled = false;
}
public static class Debug
{
public static void Log(object message) => Console.WriteLine(message);
}
public class Program
{
public static void Main()
{
ColorOverLifetimeModule col = new ColorOverLifetimeModule();
// Modulu etkinlestir ve durumunu yazdir
}
}Sample solution
using System;
public class ColorOverLifetimeModule
{
public bool enabled = false;
}
public static class Debug
{
public static void Log(object message) => Console.WriteLine(message);
}
public class Program
{
public static void Main()
{
ColorOverLifetimeModule col = new ColorOverLifetimeModule();
col.enabled = true;
Debug.Log("Renk modulu: " + col.enabled);
}
}Expected output
Renk modulu: True
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 Which module allows a particle's color and transparency to transition gradually from birth to death?
- Collision
- Color over Lifetime Correct answer
- Size over Lifetime
- Velocity over Lifetime
Explanation: The Color over Lifetime module changes the particle's color and transparency across its lifetime using a gradient.
2 Select Module
var renkModulu = ps.____;var renkModulu = ps.colorOverLifetime;Explanation: The module controlling color transition over lifetime is colorOverLifetime.
3 Color Module Concepts
| Term | Meaning |
|---|---|
Color over Lifetime |
Color and alpha change over lifetime |
Gradient |
Smooth transition scale between colors |
Alpha Key |
Transparency stop at a point |
Color Key |
Hue stop at a specific point |