2D PlatFormer – L’atelier d’Hyobin

UNITY | PROJECT | 2D PlatFormer | 7. Save & Load

in Awake() method,
create a function, SaveData(),
- make a BinaryFormatter to serialize the data later
- make a FileStream and File to create a path and the target file
- create a container for the save data by creating another class in the script
  - put the data in it
  - serialize the data with the BinaryFormatter
  - Don’t Forget to close the file by using File.Close()
create a function, LoadData(),
- make a BinaryFormatter to Deserialize the data later
- make a FileStream and File to open the target file
- Deserialize the data with the BinaryFormatter
- Don’t Forget to close the file by using File.Close()

Create a function, CountScore()
- show the current score with Debug.Log()
- calculate the score
- update the score
- Save the Score by using SaveData() function from DataManagement Class
- show the updated Score with Debug.Log()
in Start() function
- put LoadData() function from DataManagement Class

with the rayCasting downwards, detect Enemy
- Kill Enemy
  - enter Enemy‘s properties to modify gravityScale, FreezeRotation, BoxCollider2D, EnemyControl

create Coin
- add Circle Collider 2D
  - make it Trigger Collider by checking Is Trigger
- add RigidBody2D
  - make it Static Collider

Uncheck “Queries Start in Colliders”
- I guess Query there means anything to detect in physics such as RayCast
- with that option checked, RayCasting starts from the inside of collider attached to GameObjects
- with that option unchecked, RayCasting Starts from the collider attached to GameObjects

create a function, PlayerRayCast(),
- attach RayCast by using RayCastHit2D, and Physics2D.RayCast(vector2 origin, vector2 direction)
- create an if statment,
  - give Player jump by using GetComponent<RigidBody2D>.AddForce()

with the option, “Queries Start in Colliders” unchecked, Enemy is moving correctly because RayCasting Starts from the exterior of Collider attacked to Enemy
with the fact that Enemy belongs to Ignore RayCast layer, the RayCasting feature is not working

in Update() method,
- with the Raycasting feature, Enemy detects other objects horizontally
- in the horizon, if Enemy collides with Player, Destroy Player

in PlayerRayCast(),
- set if statements with the conditions,
  - if Player hit anything, and if it is Enemy, make Player jump on Enemy
  - if Player hit anything, and if it is not Enemy, set the flag for jump as true

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

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

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

Create a bool variable isGrounded as Flag
Create OnCollisionEnter2D() method,
- when a collision with an object tagged “Ground”
  - the flag is set to “true“

in Update() method,
- add code as a condition for Player to jump
- when the button is pressed and at the same time the flag is true(Player is grounded)
in Jump() method,
- add code to set the flag to false

Player is not jumping on Box because Box is not tagged as Ground

Create Enemy
- add BoxCollider
- add RigidBody2D
- add EnemyControl Script

Create variables for Enemy‘s speed and direction
- Enemy is moving horizontally only, so take care of X
in Update() method
- access velocity property to move the gameObject by using GetComponent