Instantiate GameObject on Enum Selection from Inspector

[cassius]

I’m wondering how to go about instantiating (or destroying) a new GameObject when a specific enum value is selected from it’s dropdown menu in the Inspector window, prior to run-time.

Does anyone know how to go about doing this?

Thanks!

[TreyH]

This will be a pretty basic example to get you started. You can accomplish this in a few different ways, but the most educational seemed to be an introduction to custom inspectors. Create a script called PrimativeSpawner, paste this in:

using UnityEngine;
using System.Collections;
using UnityEditor;

public class PrimativeSpawner : MonoBehaviour {

	// Active primative choice
	public UnityEngine.PrimitiveType primativeChoice;

	// Spawn a primative based on the enum choice
	public void CreateChosenPrimative()
	{
		// Check what's currently active
		GameObject newPrimative  = GameObject.CreatePrimitive(primativeChoice);

		// Print the new thing's name
		Debug.LogFormat("New Primative created!  {0}", newPrimative.name);
	}
}

// We can use a custom  inspector  for this
[CustomEditor(typeof(PrimativeSpawner))]
public class PrimativeSpawnerInspector : Editor
{
	// Keep track of our current object being  inspected
	public PrimativeSpawner spawner;

	// Replace the given inspector gui
	public override void OnInspectorGUI()
	{
		// Draw the given inspector
		this.DrawDefaultInspector();

		// Check that it's been initialized
		if (spawner == null)
			spawner = this.serializedObject.targetObject as PrimativeSpawner;

		// Simple Button
		if (GUILayout.Button("Spawn Primative"))
			spawner.CreateChosenPrimative();
	}
}

You’ll be able to choose a prefab then create it with a button click in its inspector: