UNITY TUTORIAL | SCRIPTING | Time.deltaTime

 

“PlayerControl” Script from Space Shooter 2D

• when trying to move Player,  add Time.deltaTime to make the movement soft
• it makes action in Update(), independent from frame and dependent on time

Moving Player Smoothly

 

“PlayerControl” Script from Space Shooter 2D

• let’s try to remove Time.deltaTime

 

Moving Player drastically

 

 

Time.deltaTime

UNITY | PROJECT | 2D PlatFormer | 4. Score System

“PlayerScore” Script

• create timeLeft & playerScore
• in Update() method,
  • make timeLeft pass by using Time.deltaTime
  • create an if statement
    • when the time reaches approximately 0, load the scene again
• in Awake() method,
  • temporarily, set the time into 5

“Player” Inspector

 

Time is passing

 

Creating “EndLevel”

• create EndLevel from empty gameObject
  • add Box Collider
    • check is Trigger to make it as Trigger Collider
  • add RigidBody2D
    • set Body Type as Static
      • to make the gameObject immovable
      • the least resource-intensive body type
      • only collides with Dynamic RigidBody2D
      • Having two Static RigidBody2Ds colldie is not supproted

“PlayerScore” Score

• create a Function, CountScore(),
  • update playerScore by calculating with timeLeft
  • create OnTriggerEnter2D()
    • put CountScore() in to make it activated when collisions happen

 

End Level

Creating UI

 

“PlayerScore” script

• create GameObject variables for UIs
• in Update() method,
  • use text property in UIs by using GetComponent()

 

UI Working

UNITY | PROJECT | SPACE SHOOTER 2D | 2. Player Input Movement

SPACE SHOOTER 2D

2. Player Input Movement

Player Control Script

• Creating & Adding “PlayerControl” script

Player Control Script | Update() | Input.GetAxisRaw()

• setting “speed” variable as public to see in the inspector
• In “Update()”
  • set horizontal & vertical input by using Input.GetAxisRaw()
    • with Input.GetAxisRaw(), the values will be -1, 0 or 1
  • with the two inputs, make “direction”
    • by adding “.normalize”, make a unit vector
  • add a customized fuction “Move()” to move “Player”
    • we need this fuction in “Update()” because “Player”‘s position must be changed and detected every frame

 

Player Control script | Move() | Vector2 | Camera.main.ViewportToWorldPoint()

• to limit the Filed where “Player” can move, get the screen size by using “Camera.main.ViewportToWorldPoint()”
  • ViewPort has a range (0, 0) to (1, 1)

 

Player Control script | Move() | transform.position | Mathf.Clamp()

• get the Player’s current position with “transform.position”
  • transform.position of the gameObject this script is attached to
• calculate the new position in “currentPosition” variable
  • with “speed” variable, we can change the speed of “Player”
    • “direction” is the normalized vector2
    • “Time.deltaTime” is very important with this, we smooth the movement

without “Time.deltaTime”, the value(“direction”) is almost (0, 0), (1, 0)……

 

Setting Player’s Speed | Public Variable

 

Player Input Movement

Player Input Movement | without Time.deltatime

• without “Time.deltaTime”, “Player” moves too dynamically

 

UNITY TUTORIAL | PROJECT | Roll a Ball | 5. Creating Collectable Objects

Roll a Ball

Creating Collectable Objects

Cube Object

deselection in the inspector

changing transform of Collectable

Attaching Script to

Public Variable | Transform.Rotate()

Rotating Cube

Adding time.deltaTime | Frame Independent

Smooth Rotation with time.deltaTime

Trying to make Prefabs

Making Prefabs

Local View

Global View

Moving GameObject in Global View

Putting Prefabs | Values of Prefabs

Changing​ Values in Prefab Origin

Change applied to every Prefab

PickUps

Creating Material​ to Change Color of Prefab

Apply the Material to an instantiated prefab

Applying change to every prefab

Changing​ Color of

WEEK3 |UNITY 2D | Selection, Timer Part.1

Boolean Expression

• Data Type – “bool”
• evaluates “True” or “False“
• helps us with Selection Control Structure
  • lets us make decisions about which code to execute
    • Example 1) Movement Direction based on user input
    • Example 2) Whether or not an enemy drops loot
    • Example 3) Whether or not a player has leveled up
    • Example 4)
• Logical Operators
  • And : “&&“
  • Or : “| |”
  • Not : “!”
• Relational Operators
  • ==
  • !=
  • <
  • <=
  • >
  • >=

Jumper.cs

Timer Logic