🌟 Make Your Island Glow: The Magic of Light

Have you ever walked into a dark room and felt a little scared? Or seen a campfire and felt warm and safe? Light does that! In Fortnite Creative, light isn't just for seeing. It tells stories. It guides players. It makes your island feel alive.

In this tutorial, we will build a Glowing Beacon. This is a light that pulses like a heartbeat. It will guide players to a secret treasure. You will learn how to make objects shine on their own. You will also learn how to make that shine change over time. Let’s make something bright!

What You'll Learn

• What Emissive light is.
• How to use Materials to change how things look.
• How to use Nodes to make light pulse.
• How to connect lights to Events for fun effects.

How It Works

Imagine you have a flashlight. Usually, a flashlight needs batteries. It needs power. But in games, some lights are special. They glow from within. We call this Emissive light. Think of it like a glow stick. You don't need a lamp to see it. It makes its own light.

In Unreal Editor for Fortnite (UEFN), we use Materials to control this. A material is like a skin for your 3D objects. It decides the color, texture, and shine. We can edit this skin using a Material Editor. This is a special workspace. It uses Nodes. Think of nodes as puzzle pieces. You connect them with wires. Each piece does one job.

We will use a Time node. This node counts seconds. It goes up and up. We will feed this time into a Sine node. A sine wave is a smooth wave. It goes up and down. Like a pendulum. Like a heartbeat. When we connect time to sine, we get a value that changes smoothly. We can use this value to change the brightness of our light.

This is called Global Illumination or Lumen. It is a system that makes light look real. Shadows fall softly. Light bounces off walls. When we make an object emissive, Lumen makes it cast light too! This is magic.

Let's Build It

We will build a pulsing beacon. This beacon will glow brighter and dimmer. It will guide players to a chest.

Step 1: Create the Material

First, open the Content Browser. This is your library of items. Right-click in the browser. Select New Material. Name it BeaconMaterial. Double-click it to open the Material Editor. This is your puzzle board.

Step 2: Add the Nodes

We need to connect some puzzle pieces. Add these nodes to the editor:

1. Time: This gives us the current time in seconds.
2. Sine: This turns time into a wave.
3. Constant3Vector: This sets our base color.
4. ComponentMask: This picks one part of the color.
5. ConstantBiasScale: This adjusts the wave.
6. Saturate: This keeps values between 0 and 1.
7. Emissive Color: This is the output slot.

Step 3: Connect the Wires

Now, connect the nodes. Drag a wire from one node to another.

1. Connect Time to Sine.
2. Connect Sine to ConstantBiasScale (Scale input).
3. Connect Constant3Vector to ComponentMask. Set the vector to (1, 0.5, 0) for orange light.
4. Connect ComponentMask to ConstantBiasScale (Bias input).
5. Connect ConstantBiasScale to Saturate.
6. Connect Saturate to Emissive Color.

Wait! We need to make it pulse. The sine wave goes from -1 to 1. But light cannot be negative. We need to fix this. Add a OneMinus node. Connect Sine to it. Then connect OneMinus to Saturate. This flips the wave. Now it goes from 0 to 1.

Step 4: Apply the Material

Close the Material Editor. Save your work. Now, go to your island. Place a Cube or a Sphere. This is your beacon. In the Details Panel, find Material. Drag your BeaconMaterial onto it.

Look at your island! The object should now glow. But it might not move. We need to make it pulse.

Step 5: Make It Pulse with Verse

Materials in UEFN can be static. But we can use Verse to make them dynamic. We will write a script that changes the material over time.

Here is a simple Verse script. It uses a Loop to update the light. A loop is a circle. It repeats code again and again.

using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /Verse.org/Native }

# This is our beacon device.
BeaconDevice := class(creative_device):
    # This is the intensity value we will pulse.
    var intensity : float = 0.0

    # This function runs every frame.
    OnBegin<override>()<suspends>:void=
        # We will loop forever.
        var time : float = 0.0
        loop:
            # Increment time manually.
            set time = time + 0.016
            # Calculate a pulse value.
            pulse:=Sin(time*2.0)*0.5+0.5
            # Apply the pulse to the intensity variable.
            set intensity = pulse
            # Wait a tiny bit before next frame.
            Sleep(0.016)```

This code might look scary. Let’s break it down.

*   `loop:` means repeat.
*   `GetTime()` gets the seconds.
*   `Sine()` makes it wave.
*   `SetEmissiveIntensity()` changes the brightness.

You don't need to write this code yourself yet. Just know that Verse connects the time to the light. It makes the light breathe.

## Try It Yourself

Now it is your turn! Try these challenges.

**Challenge 1: Change the Color**

Can you make your beacon blue instead of orange?

*   **Hint:** Look at the `Constant3Vector` node. Change the numbers `(1, 0.5, 0)` to `(0, 0.5, 1)`. This is blue!

**Challenge 2: Make It Faster**

Can you make the pulse faster?

*   **Hint:** In the Verse code, look at `time*2.0`. Try changing `2.0` to `5.0`. This makes the wave move faster.

**Challenge 3: Add a Trigger**

Can you make the beacon turn on only when a player steps on a tile?

*   **Hint:** Use a **Trigger** device. Connect it to the beacon. Use Verse to start the loop only when triggered.

## Recap

You did it! You made a glowing beacon. You learned about **Emissive** light. You learned about **Materials**. You learned about **Nodes**. You even touched **Verse** code.

Light is powerful. It guides players. It sets the mood. It makes your island special. Keep experimenting. Try different colors. Try different shapes. Your imagination is the only limit. Have fun making bright things!

## References

*   https://dev.epicgames.com/documentation/en-us/uefn/lighting-in-unreal-editor-for-fortnite
*   https://dev.epicgames.com/documentation/en-us/fortnite/lighting-in-unreal-editor-for-fortnite
*   https://dev.epicgames.com/documentation/en-us/fortnite/create-light-effects-in-unreal-editor-for-fortnite
*   https://dev.epicgames.com/documentation/en-us/uefn/create-light-effects-in-unreal-editor-for-fortnite
*   https://dev.epicgames.com/documentation/en-us/fortnite/effects-and-particle-systems-in-unreal-editor-for-fortnite