# ActionGraph

![An example ActionGraph that implements jumping and falling with gravity](https://cdn.sbox.game/doc/actiongraph/images/an-example-actiongraph-that-implements-jumping-and-falling-w.png)

ActionGraph is a visual scripting system that lets you create game logic using nodes instead of code. Connect nodes together to build behaviors, respond to events, and control your scene — all from a graphical editor.

## What Can You Do?

- **Script without code** — build gameplay logic, UI interactions, and event handling visually
- **React to events** — trigger graphs from collisions, input, timers, or custom C# delegates
- **Control flow** — use loops, branches, and delays to create complex behaviors
- **Mix with C#** — call ActionGraphs from code or expose C# methods as custom nodes
- **Reuse logic** — save graphs as action resources and share them across your project

## How It Works

Every ActionGraph starts with a **root node** that fires a signal when the graph runs. You connect **action nodes** (blue) to perform operations in sequence, and **expression nodes** (green) to compute values. **Links** between nodes carry signals or data.

Graphs can be attached to components via the **Actions Invoker**, wired up to built-in component events like trigger collisions, or invoked directly from C# using delegate properties.

## Pages

- 🌱 [Getting Started](/dev/doc/actiongraph/getting-started) — learn the basics of nodes, links, and graph editing
- 🧩 [Component Actions](/dev/doc/actiongraph/component-actions) — add ActionGraphs to your scene with built-in components
- 💾 [Variables](/dev/doc/actiongraph/variables) — store and reuse values in your graphs
- 🛠️ [Using With C#](/dev/doc/actiongraph/using-with-c) — invoke graphs from code and pass parameters
- 📖 [Examples](/dev/doc/actiongraph/examples) — copy-paste examples for common patterns
- 🆕 [Custom Nodes](/dev/doc/actiongraph/custom-nodes) — create your own node types