Creating Scripts

Question 1

transform on GameObject

Answer 1

accessible in script with just .transform, inherits from “transform” visible in Unity inspector.

Question 2

Time.deltaTime

Answer 2

time to render previous frame

Question 3

Update() method called how often?

Answer 3

every frame

Question 4

Time.time

Answer 4

true time since start of game

Question 5

tranform.Translate(…)

Answer 5

translates object

Question 6

namespaces

Answer 6

establish groupings between related objects

Question 7

UnityEngine

Answer 7

namespace referring to when app is running

Question 8

UnityEditor

Answer 8

namespace referring to extending Unity editor

Question 9

jump directly in docs from Unity UI how?

Answer 9

click on book+? symbol in inspector

Question 10

create script how?

Answer 10

from unity editor

Question 11

: Monobehavior

Answer 11

MonoBehaviour is the base class from which every Unity script derives.

Question 12

Start()

Answer 12

Start is called on the frame when a script is enabled just before any of the Update methods are called the first time.

Like the Awake function, Start is called exactly once in the lifetime of the script. However, Awake is called when the script object is initialised, regardless of whether or not the script is enabled. Start may not be called on the same frame as Awake if the script is not enabled at initialisation time.

The Awake function is called on all objects in the Scene before any object’s Start function is called. This fact is useful in cases where object A’s initialisation code needs to rely on object B’s already being initialised; B’s initialisation should be done in Awake, while A’s should be done in Start.

Where objects are instantiated during gameplay, their Awake function is called after the Start functions of Scene objects have already completed.

Question 13

Update()

Answer 13

Update is called every frame, if the MonoBehaviour is enabled.

Update is the most commonly used function to implement any kind of game script. Not every MonoBehaviour script needs Update.

Question 14

interact with GameObjects in script

Answer 14

1. create empty GameObject in Unity.
2. create script
3. drag script onto GameObject

Question 15

Quaternion.identity

Answer 15

how to rotate object; identity same as matrix identity, not rotation

Question 16

Prefab

Answer 16

store a GameObject on file

Question 17

Renderer

Answer 17

change color of object

Question 18

OBJECT.GetComponentInChildren

Answer 18

in OJBECT, find component in children, of type

Question 19

lerp and slerp

Answer 19

Lerp stands for linear interpolation and Slerp stands for spherical linear interpolation, and both rely on a time parameter that indicates how much to interpolate.

Question 20

sun.transform.rotation vs sun.transform.Rotate

Answer 20

rotation describes objective rotation in space, Rotate is change in rotation.

Question 21

to apply physics to object, need to apply

Answer 21

collider

Question 22

collider types

Answer 22

box
capture
mesh
sphere

Question 23

rigidbody is

Answer 23

a component that enables a gameobject to interface with the Unity physics simulation

Question 24

rigidbody properties

Answer 24

mass, drag, gravity, etc.

Question 25

raycasting?

Answer 25

shooting a ray out from a given point in hopes of hitting a collider from our scene

Question 26

FixedUpdate

Answer 26

like update, but where you should write code with that uses physics, rigidbody

Question 27

audio, 2d 3d

Answer 27

2d not in world (like music), 3d location dependent

Question 28

audiolistener

Answer 28

one audiolistener in scene (like camera) determines how to make audio from sources. by default on camera.

Question 29

using Unity.SceneManagement

Answer 29

GetActiveScene()

LoadScene()