UNITY | PROJECT | SPACE SHOOTER 2D | 7. Collision Detection

Creating Tags

• Create the tags for each GameObject

Tagging

• Tagging each GameObject with its own Tag

 

Adding Collider & RigidBody2D to “Player”

Adding Collider & RigidBody2D to “Enemy”

Adding Collider & RigidBody2D to “PlayerBullet”

Adding Collider & RigidBody2D to “EnemyBullet”

• Add Collider & RigidBody2D to each GameObject
  • Set “Is Trigger” in Collider to make it as “Trigger Collider”
  • Set “Gravity Scale“ in RigidBody2D to make them not to be affected by Gravity
  • Set “Freeze Rotation” in RigidBody2D to make them not spin when collided

OnTriggerEnter2D() | “PlayerControl” Script

OnTriggerEnter2D() | “EnemyControl” Script

OnTriggerEnter2D() | “PlayerBullet” Script

OnTriggerEnter2D() | “EnemyBullet” Script

• Add “OnTriggerEnter2D(Collider2D)” method to each GameObject to detect and activate “Destroy()”
• To Sort each Collision, Use “Collider2D.tag”

 

Collision Detection Working Well

“PlayExplosion()” | “PlayerControl” Script

“PlayExplosion()” | “EnemyControl” Script

• To Destroy “Player” or “Enemy”
  • Create a Function, “PlayExplosion()”
    • Instantiate the Explosion(Don’t forget to use “this.”)
  • Write the Function inside “TriggerEnter2D()” to make the instantiation of Explosion happen when a collision is detected

Explosion Animation & Collision Detection

UNITY TUTORIAL | PHYSICS | 3D Physics | RigidBodies

UNITY TUTORIAL

PHYSICS | 3D Physics | RigidBodies

GameObject without RigidBody

GameObject without RigidBody

GameObject with RigidBody

GameObject Falling under Gravity because of RigidBody

Project Setting | Physics

Physics Manager | Direction of Gravity

Changing the Direction of Gravity

GameObject Falling under Gravity in a different direction

Use Gravity | Is Kinematic

Board – Gravity On

Ball – Gravity On

Board – Gravity

Ball – Gravity On

Board Kinematic On

Ball – Gravity On

To move Kinematic GameObject

Kinematic GameObject

the object still interacts with the others but remains a rigidbody,

so is constantly informing the physics engine of its location

and not forcing the physics engine to re-evaluate the entire scene.

Interpolate | ExtraPolate

Collision Detection

Constraints of Position and Rotation

 

No Constraint

 

Rotation Constraint

 

UNITY TUTORIAL | PROJECT | Roll a Ball | 6. Collecting the Pick Up Object

Roll a Ball

Collecting the Pick Up Object

OnTriggerEnter() | CompareTag() | SetActive()

Add Tag

Add Tag

Add Tag

Apply Tag

Appy Tag

SetActive not working

selcting

Unity’s Physics Engine | Static Collider | Dynamic Collider | Trigger | Trigger Collider

Collier | Trigger

Collier | Trigger

RigidBody | Collider | Dynamic

Prefab | RigidBody | came to Dynamic

RigidBody | Gravity

RigidBody | Gravity | Partial Solution

RigidBody | Gravity | Kinematic

Gravity Overcome

 

Creating Variable as Reference

Creating UI Text

Chaing Position of UI

Configuring

NameSpace | UnityEngine.UI

Text.text | ToString

Custom Method to make the script shorter

Private Variable

 

Text UI

 

Creating Win Text

changing​ the location of UI Text

Using Custom Method

Custom Variable

Private Variable

UI Text

WEEK3 |Unity 2D Physics | Moving GameObject

GameObject | Unity Component | RigidBody2D

Physics 2D | Gravity

Project Settings | Physics 2D

Physics2D

Physics2D Setting | Gravity

RigdBody2D | GetComponent | RigidBody2D.AddForce

GetComponent

• we can get other components that are attached to the same Game Object this script is attached to by calling “GetComponent” and we put that component into a variable

RigidBody2D.AddForce

• public void AddForce(Vector2 force, ForceMode2D mode = ForceMode2D.Force);
• ForceMode2D
  • ForceMode2D.Force – Add a force to the Rigidbody2D, using its mass.
  • ForceMode2D.Impulse – Add an instant force impulse to the rigidbody2D, using its mass.

Script Attached

GameObject Moving