Time for action – creating a turret

Since we want four identical turrets in each corner of the arena, they're a perfect case for a prefab, which we can create with the following steps:

Again, I haven't included any precise barrier position, rotation, or scale values because I want you to get up close and personal with the Unity editor tools. 

Going forward, when you see a task ahead of you that doesn't include specific position, rotation, or scale values, I'm expecting you to learn by doing.

1. Create an empty parent object inside Environment by selecting Create | Create Empty and naming it Barrier_01.
2. Create two Cube primitives from the Create menu, positioning and scaling them as a v-shaped base.

3. Create two more Cube primitives and place them on the ends of the turret base:

4. Create a new folder in the Project panel and name it Prefabs. Then, drag Barrier_01 into it:

Barrier_01, and all its child objects, is now...