UNITY | PROJECT | 2D PlatFormer | 3. Basic Enemy

“PlayerControl” Script

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

Tagging “Ground”

Collision Detection Working

“PlayerControl” Script

• 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

Box not tagged

Ground Tagged

 

Jump

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

 

 

Creating “Enemy”

• Create Enemy
  • add BoxCollider
  • add RigidBody2D
  • add EnemyControl Script

 

“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

“Enemy” Inspector | Public Variables

 

“EnemyControl” Script

• in Update() method,
  • add RayCasting to perceive the obstacles
  • Physics2D.RaycastHit2D(vector2 origin, vector2 direction)
    • the origin where Ray is cast from is the current position of gameObject
    • the direction of casting the ray is only x
    • when the length of ray is less than 0.7,
      • activate Flip()
  • create a function, Flip(),
    • change the direction in x opposite whenever this function is called

“Enemy” Inspector

• put Enemy in Igonore Raycast layer
• set the speed

 

Enemy Moving

 

When layer is defualt

 

UNITY TUTORIAL | PHYSICS | 3D Physics | Detecting Collisions with OnCollisionEnter

UNITY TUTORIAL | PHYSICS | 3D Physics | Detecting Collisions with OnCollisionEnter

Box Prefab | RigidBody Attached

GameObject | Physics Material | RigidBody | Collision Detection Script

Physics Material for Friction and Bounciness

OnColliisonEnter(Collision) | CompareTag() | Destroy()

Collision Detection | Destroy