Category: Unity Tutorials

Disclaimer: When using Unity assets, be mindful of licensing restrictions, version compatibility issues, and reliance on third-party content. Always check the asset’s terms and documentation before adding it to your project.

While creating your environment in Unity, you’re allowed to use the Unity Asset Store to download assets and use them for your project, following the correct guidelines.

Link to Unity Asset Store

From here you’ll find a multitude of assets ranging from 3D to 2D assets, for this guide we’ll mainly be focusing on using the 3D tools. Heres the link to the 3D Unity Asset Store, make sure you’re logged into your Unity Account to access downloads.

On the side of the Unity Asset Store theres going to be a filter that allows you to find any type of asset, we’ll be using the free assets, so under Pricing you want to check Free Assets.

Then choose a free asset to download, and it’ll bring you to asset page with a “Add to My Assets” button. Make sure the page also has the word FREE above the button.

After clicking “Add to My Asset,” you’ll see a pop-up appear about the Terms of Service. It’s important to understand that even free assets may come with specific rules or restrictions on how they can be used.

After accepting the terms, another pop-up will appear asking if you want to open your assets in Unity. Click “Open in Unity.”

After opening Unity, you’ll see your package manager appear, then you want to select the asset you want to download and add it into your project by clicking download -> import to project -> import.

After downloading, you’ll see the folder appear in your assets folder, in there it should be organized and contain a material, model, prefabs, and textures folders!

Good Luck!

Step 1: Check the pre-made win containers to see if there are any that will match your experience.

In this project, we have given you pre-made win containers that you can use. These are located in Assets/Pre-College/Prefabs/Win Containers in the Project Window.

If you like one of the already existing win containers, then there’s no need to continue this tutorial! Just drag the prefab you like into your scene.

Step 2: If you want to make your own Win Container

1. Create an empty GameObject in your scene (I will name mine Win Container).
   • Depending on what kind of Win Container you are trying to make, you may or may not want to add a Rigidbody to the parent GameObject you just made.
   • For a non-moving stationary box like in the following example, it is not required.
2. Add your model to the GameObject you just made as a child GameObject (I’m going to use the crate model).

Step 3: Ensure that you have collider(s)for your Win Container.

Reminder: For more complex models, you can have multiple colliders on one GameObject.

Step 4: Make a trigger cube.

This GameObject will detect if a Win Object enters it.

1. Make a new empty GameObject and give it a Box Collider.
2. On the Box Collider component, enable the Is Trigger variable.
   • This disables normal physical collisions for this collider and has it act as just a sensor for coming into contact with other colliders.
3. Adjust the Box Collider until it covers the empty space of the win container.
4. Add the Win Container component to the GameObject.
5. Your Win Container should now be fully functional!
   • Don’t forget to make it a Prefab by dragging it from the Hierarchy Window into the Assets/_Prefabs folder in the Project Window.

Step 5 (Optional): Add sparks that fly out whenever a Win Object is placed in the Win Container.

1. Add the SparksParticles prefab from Assets/Pre-College/VFX/Sparks to your Win Container‘s parent GameObject.
2. Select the SparksParticles in the Hierarchy Window, and reset the Transform‘s position values to 0,0,0 in the Inspector Window.
3. Test the Particle System by clicking the Play button in the Scene View.
4. Adjust the Position, Rotation and Scale of the SparksParticles object.
5. Assign the SparksParticles object to the Sparks variable in the Win Container component in your Trigger Cube object.

Next Steps:

1. Make a win object
2. Set up your NPC

Step 1: Make an empty GameObject to hold your Win Object‘s model.

1. Create a new empty GameObject (I’m going to name mine WinObject).
2. Add the model you would like to use as a child object (I’m going to just be using a Sphere).

Step 2: Make your Win Object grabbable.

1. In the parent GameObject, add the Rigidbody and XR Grab Interactable components
   • Configure these components however you would like.
2. DO NOT place a Collider on the parent GameObject. Place the Collider(s) on your child GameObject that contains the model.

Step 3: Add and configure the Win Object component to which ever object contains your Collider.

1. Select the object that holds your Collider. For me, this is my sphere.
2. Add the Win Object component in the Inspector Window.
3. Configure the values to your liking.
   • Score Amount lets you change the score value that the Win Object will give the player when it is placed in a Win Container.
   • Destroy On Enter: If this is enabled, then the Win Object will be deleted from the game once it enters the Win Container. This is how the jellyfish in Jellyfishin' work.
   • If Destroy On Enter is enabled, then you must assign the Parent Game Object variable to the parent GameObject of the Win Object.

Step 4: Save your Win Object as a Prefab.

1. Move your Win Object to the --- GRABBABLES --- folder for organization.
2. Drag the parent GameObject of your Win Object from the Hierarchy into the Project Window in the Assets/_Prefabs folder.

Next Steps:

1. Set up a win container

Step 1: Open your NPC’s Prefab by double-clicking it in the project window. If you don’t have a prefab of your NPC, follow this guide for importing your NPC from Blender into Unity.

You will know that you are in the prefab editor when the background in your scene view is blue.

Step 2: Add the Nav Mesh Agent Component to your Prefab’s parent GameObject.

1. Select the parent GameObject.
2. In the Inspector window, click Add Component.
3. Search for Nav Mesh Agent and select it.

Step 3: Enable Gizoms so you can see your Nav Mesh Agent‘s Obstacle Avoidance green cylinder.

1. Ensure that Gizmos is on by clicking the Gizmos icon in the toolbar.
2. Now when you have the parent GameObject selected, you should see a green cylindrical outline on your NPC.

Step 4: Ensure that the bottom of the green cylinder matches the bottom of your NPC. If this is not already the case, follow these steps:

1. Select the GameObject holding your NPC‘s model.
2. Click the Lock button in the inspector to lock the inspector to your model’s GameObject.
3. Select the parent GameObject.
4. Adjust your model’s Transform‘s Y position until the bottom of the NPC matches that of the green cylinder.
5. Once you’ve finished, you can unlock the inspector by clicking the Lock button again.

Step 5: Adjust the Radius and Height values of your Nav Mesh Agent‘s Obstacle Avoidance to match your NPC’s model.

1. Select the parent GameObject.
2. Adjust the Radius and Height values until the green cylinder covers your NPC

Step 6: Add the Patrol component to your NPC’s parent GameObject.

This will let us add points for the NPC to walk to later.

Step 7: Add and configure the Nav Mesh Surface component to your floor.

1. Enter the scene you want to work in. If you don’t know which scene to work in, then enter the Barebones Scene located in Assets/Pre-College/Scenes.
2. Select the floor your NPC will be traversing.
3. In the Inspector Window, click Add Component, then search for and add a Nav Mesh Surface component.
4. Change the Use Geometry variable in the Nav Mesh Surface component from Render Meshes to Physics Colliders.
5. Click Bake (this process may take some time depending on how complex your floor is).
6. Once the Bake process is finished, with Gizmos on, you should see blue spots on your floor. These areas are where your NPC is able to traverse.

Step 8: Add patrol points so your NPC can move around.

1. In your --- NPC --- folder, create a new empty GameObject called Patrol Points.
2. Create a new cube named Patrol Point. Disable its Box Collider component.
3. Duplicate the Patrol Point object you made by selecting the Patrol Point object and pressing Control and D on your keyboard. Then move your new Patrol Point (1) object to a different position.
4. Assign the Patrol Point objects you made to the Points variable in the Patrol component on your NPC’s parent GameObject by clicking the plus (+) icon and dragging the Patrol Point GameObjects from the Hierarchy Window into the Inspector Window.
5. Enter Play Mode, and switch back to scene view and observe your NPC moving between the points you assigned.
6. You can disable the Mesh Renderer component on your Patrol Points so your player does not see them. It’s just useful to have them be visible while you’re developing.

Step 9 (Optional): Make it so that your player “Loses” when they come into contact with your NPC.

1. Go back into prefab editing mode by double-clicking your NPC’s Prefab in the Project Window.
2. Create a new empty GameObject and name it Player Collider.
3. Give it a Box Collider or other collider depending on the shape you’d like to use, and edit the collider until it covers your whole NPC.
4. Enable the IsTrigger variable in the Collider component.
   • This disables normal physical collisions and has the collider act as just a sensor for coming into contact with other colliders.
5. Add the Enemy NPC script to the Player Collider GameObject.
6. When your player comes into contact with your NPC, the player should now “lose.” (Make sure that the Sandbox Mode variable in your Experience Manager is not enabled when testing this)

Next Steps:

1. Create win objects
2. Create a win container

Step 1: In Unity, navigate to the Barebones scene located in Assets/Pre-College/Scenes/Barebones. This is the scene in which you will create your own VR experience.

This scene is set up and pre-configured with:

• XR Origin
  • XR Controls Manager
• Main Menu
• Experience Manager

Step 2: Set up your Experience Manager.

1. Select the --- Experience Manager --- GameObject.
2. In the Inspector Window, edit the values in the Experience Manager script to match your experience/game.

Step 3: Set up your XR Controls Manager PC component.

1. Select the XR Origin (Pre-College) object, which is a child of the --- XR --- object.
2. Here, you can change the default movement and turning settings.
3. DO NOT change the Disable Movement On Start variable.

Next Steps:

1. Set up win objects and win containers
2. Set up your NPC