Spawn prefab only in allowed area?

Questions & Answers
1

Hello, I’m using this code to spawn a prefab at mouse position, but I only want it to be allowed to be spawned in the area next to street. How can I do this?

if (place_power_plant_coal && Input.GetButtonDown("Fire1")) {
			Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
			RaycastHit hit;
			if (Physics.Raycast(ray, out hit)) {
				Instantiate(__power_plant_coal, hit.point, Quaternion.identity);
			}
}
2

You could use layers to define the “spawnable” areas, using the RayCast method but with a layermask.

The solution suggested by @Muuskii is a possibility too: