Setting up the Game

Moving the Player

Moving the Camera

Setting up the Play Area

Creating Collectibles

Detecting Collisions with Collectibles

Displaying Score and Text

Adding AI Navigation

Building the Game

Welcome to 3D Beginner: Roll-a-Ball Game! In this learning project, you’ll:  

Use Unity Editor and its built-in capabilities to set up a simple game environment

Write your own custom scripts to create the game functionality

Create a basic user interface to improve the game experience

Build your game, so other people can play it!

3D Beginner: Roll-a-Ball Game

d1c38382-fa18-540d-8b19-4f68377057cf:zx7pohSEomVRos4yXEmmmr

Overview

Create a wall for the play field

Finish the play field walls

Unity_RollABall_4-2.mp4

Unity_RollABall_4-1.mp4

4.2.3-final-bounce-into-walls.mp4

In this tutorial, you’ll configure the play area for your game by:

Duplicating and placing it to create a contained game area

Create_a_wall_for_the_play_field-Transcript.txt

Finish_the_play_field_walls-Transcript.txt

Unit 2 - Program a basic game

By the end of this tutorial, your game will look something like this:

Follow the video or text instructions below to create an empty parent GameObject, create a Wall child GameObject, set the Wall GameObjects’s transform values, and create a material for the Wall GameObject:

In the Hierarchy window, right-click > Create Empty, then rename it “Walls”.

In the Inspector window, reset its Transform component. 


In the Hierarchy window, right-click > 3D Object > Cube, then rename it “West Wall”.

In the Inspector window, reset the West Wall GameObject’s Transform component. 

Drag the West Wall GameObject onto the Walls GameObject. This makes the West Wall GameObject a child GameObject of the Walls GameObject. 


Press the F key while the cursor is over the Scene view to frame the West Wall GameObject in the view.

In the Inspector window, change the wall’s Transform Scale values to X=0.5, Y=2.0, Z=20.5.

Set the Transform's Position X value to -10. 

This places the West Wall GameObject neatly on the edge of the play area. 


In the Project window, go to the Materials folder, then right-click > Create > Material.

In the Inspector window, select the Base Map color field to open the color picker, then set the RGB values to 79, 79, 79 for a darker gray.

Set the Metallic Map to 0 and change the Smoothness to 0.25, for a matte finish.

Drag the Walls material from the Project window onto the West Wall GameObject in the Scene view. 

In the Hierarchy window, the West Wall GameObject is a child GameObject of the Walls parent GameObject. The Walls material is highlighted in the Project window. The Transform component for the West Wall is highlighted in the Inspector window.

Follow the video or text instructions below to create the East wall, the North wall, and the South wall, then test the game:

Right-click the West Wall GameObject and select Duplicate. 

Rename the new GameObject “East Wall”.

To reposition the wall, remove the negative sign in the Position X value of the Transform component. 


Duplicate the East Wall GameObject and rename the duplicate “North Wall”. 

Set its Position X value to 0 and its Position Z value to 10. 

Duplicate North Wall GameObject, rename it “South Wall”, and set its Position Z value to -10.

You should now be able to roll around and bump into the walls. 

If the ball is going through the walls, make sure that the IsTrigger property in the Collider component is disabled.

All four walls are selected in the Hierarchy window, and all are child GameObjects of the empty Walls parent GameObject.

Setting up the Play Area

1. Overview

2. Create a wall for the play field

3. Finish the play field walls

Complete this tutorial