This document provides a step-by-step guide to creating a simple 3D game using Unity, focusing on setting up the game environment by creating the ground and the player object. It includes instructions on managing project files, manipulating 3D objects, and applying materials and lighting. The document also covers scripting for player movement and camera control, culminating in testing the game functionality.

1. Based on Roll-a-ball video tutorial from Unity Technologies
Part 1
@shahedC
WakeUpAndCode.com

2. Getting Started
> Creating the Ground
> Creating the Player
> Materials, Colors & Lighting
> 3D Physics & Movement
Controlling the Camera

6. Select 3D (not 2D) Click [Create project]

7. Click Layout
dropdown
to select
or save

8. Click
File 
Save Scene

9. Create
New folder
below
Assets
folder
Name it
“Scenes”

10. , then click [Save]… Name your scene “PlayingField.unity”
Inside
“Scenes”
Subfolder…

11. Verify
Saved Scene
in
Project panel
Verify Scene Name in Title Bar

13. Click GameObject  3D Object  Plane Click Create  3D Object  Plane
In the top menu… In the Hierarchy panel…- OR -

15. Right-click to rename
Enter “Ground”

16. Select
“Ground”
in Hierarchy
Click gear icon
next to
Transform
then
click “Reset”

18. With “Ground” selected in hierarchy…
… press ‘F’ on your keyboard to focus on it
… move your cursor to the Scene

19. Scroll the mouse wheel over your scene to zoom in/out

20. In the Scene panel, click the Gizmos dropdown to toggle “Show Grid”

21. Click on the Scale tool, while the Ground is selected…
… then, drag the handles to resize the ground

22. Manually enter Scale values in the Ground’s Transform component
Scale: X = 2, Y = 1, Z = 2

24. Click GameObject  3D Object  Sphere Click Create  3D Object  Sphere
In the top menu… In the Hierarchy panel…- OR -

25. Position Sphere at X = 0, Y = 0.5, Z = 0

28. In the Project panel,
click Create dropdown
then, select “Folder”

29. In Project panel,
click Create
then, select “Folder”
Rename it “Materials”

30. In Project panel,
click Create
then, select
“Material”
Rename it “GroundMaterial”
Repeat for “BallMaterial”

31. For each
material...
Update color
in Inspector
window
(click white
square)

32. • Red
• Green
• Blue
• Alpha (Transparency)

33. Verify that GroundMaterial and BallMaterial have different colors.

34. Drag each material from Project panel to the Scene panel

35. Update Direction Light in Inspector
Rotation: X = 50, Y = 60, Z = 0

37. With “Ball” selected in the Hierarchy panel…
Click Component  Physics  RigidBody

38. With “Ball” selected in the Hierarchy panel, click Add Component  Physics  Rigidbody

39. Verify RigidBody Component

40. In the Project panel,
click Create dropdown
Then select “Folder”, name it “Scripts”

41. In the Project panel,
click Create dropdown Then select “C# Script”, name it
PlayerController

42. With “Ball”
selected...
… Drag
script into
Ball
Verify Script
Component!

44. Add FixedUpdate() method
… just before last curly brace

45. Inside FixedUpdate() method…
Calculate 3D movement

46. Define rb
just before Start()
Initialize inside
Start() method
Add Force inside
FixedUpdate()

47. Click Play button, move around with arrow keys!

48. Define public
speed variable
Multiply speed
with movement

49. With “Ball”
selected...
Set Speed = 10

50. Click Play button, move around with arrow keys!

52. Set Camera Position and Rotation
• Position: X = 0, Y = 10, Z = -10
• Rotation: X = 45, Y = 0, Z = 0

53. Camera should
appear higher
with a better view

54. In the Project panel,
click Create dropdown Then select “C# Script”, name it
CameraController

56. Define instance
variables
just before Start()

57. Initialize offset
in Start() method

58. Add
LateUpdate()
method
Then, set
camera
position

59. With
“Main Camera”
selected...
… Drag
script into
camera
Verify Script
Component!

60. With
“Main
Camera”
selected...
… Drag Ball into Camera’s Player object

61. Click Play, move around!