Procedural Placement Graph

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Getting Started ​

This guide walks you through installing Procedural Placement Graph and creating your first placement graph.

Creating Your First Graph ​

Step 1: Create a Graph Asset ​

  1. Right-click in the Project window
  2. Select Create > Procedural Placement Graph > Graph Asset
  3. Name it (e.g., MyFirstGraph)

Step 2: Open the Graph Editor ​

  1. Double-click the graph asset, or
  2. Open Window > Procedural Placement Graph > Graph Editor and drag the asset into the window

Step 3: Add Nodes ​

  1. Right-click in the graph editor to open the Search Window
  2. Add a Random Points node (Generators category)
  3. Add a Prefab Instancer node (Instancers category)
  4. Connect the Out port of Random Points to the In port of Prefab Instancer

Step 4: Configure Nodes ​

  1. Select Random Points and set:
    • pointCount: 50
    • boundsMin: (-10, 0, -10)
    • boundsMax: (10, 0, 10)
  2. Select Prefab Instancer and assign a prefab to the prefab field

Step 5: Set Up the Scene ​

  1. Create an empty GameObject in your scene
  2. Add a PPG Component (Add Component > PPG Component)
  3. Assign your graph asset to the Graph field
  4. Click Generate

Your prefabs should now be scattered within the defined bounds.

Auto Preview ​

Toggle Auto in the graph editor toolbar to automatically re-execute when you change parameters. If a PPGComponent using this graph exists in the scene, Auto mode runs the full graph including instancers (objects are actually placed). If no component is present, it falls back to preview-only mode showing point positions in the scene view.

Next Steps ​

Procedural Placement Graph for Unity