Hello World

The simplest HoloScript program - a glowing greeting orb.

.hs Version (Classic)

// hello-world.hs
// A simple greeting orb that displays a welcome message

orb greeting {
  message: "Hello, HoloScript World!"
  color: "#00ffff"
  glow: true
  position: { x: 0, y: 1.5, z: -2 }
}

function displayGreeting() {
  show greeting
  pulse greeting with duration 1000
}

// Execute on load
execute displayGreeting

.holo Version (Composition)

// hello-world.holo
composition "Hello World" {
  environment {
    skybox: "gradient"
    ambient_light: 0.5
  }

  object "Greeting" {
    @glowing
    
    position: [0, 1.5, -2]
    color: "#00ffff"
    glow_intensity: 1.5
    
    text: "Hello, HoloScript World!"
  }
  
  logic {
    on_scene_load {
      pulse Greeting over 1s
    }
  }
}

What This Does

1. Creates an orb at eye level, 2 meters in front of the user
2. Makes it glow with a cyan color
3. Displays text saying "Hello, HoloScript World!"
4. Pulses the orb when the scene loads

Try It

1. Save as hello-world.holo
2. Open in VS Code with HoloScript extension
3. Run HoloScript: Preview Scene

Compile Targets

# Three.js (Web)
holoscript compile hello-world.holo --target threejs

# Unity
holoscript compile hello-world.holo --target unity

# Output
# ├── dist/threejs/hello-world.js
# └── dist/unity/HelloWorld.cs

Next Steps

• Add @grabbable to make it interactive
• Add @physics for realistic movement
• Try Interactive Cube for more interactivity