UNITY | PROJECT | RPG Tutorial |14. Enemy AI

“SpiderAI” Script

• create a variable for Player
• in Update() method,
  • make Spider keep looking at Player by using transform.Lookat()

Adding Script

“SpiderAI”

• create variables for
  • Player
  • distance obtained by RayCasting
  • distance where Enemy starts to move towards Player
  • Spider itself
  • speed of Spider
  • attack trigger to indicate when spider starts to attack
  • for RayCasting

• in Update() method,
  • put the information from RayCasting to the RayCastingHit variable
  • put the distance from RayCasting into the variable for distance
  • if Player is within the minimum range of Spider,
    • set the speed of Spider
    • if attackTrigger is 0,
    • • make Spider move with the animation, “walk”, toward Player by setting its tranform
  • if Player has left from the range of Spider,
    • set the speed of Spider into 0
    • make Spider idlen with the animation, “idle”

AI Working : Walking

Adding Script

“SpiderAI” Script

• in Update() method,
  • add another if statement,
  • • if attackTrigger is 1
  • • • set the speed of Spider into 0
  • • • make spider attack with animation, “attack”
• in OntriggerEnter() method,
  • when spider touches somthing(Player), set attackTrigger into 1
• in OntriggerExit() method,
  • when Player has escaped Spider, set attackTrigger into 0 to make it stop attack

AI Working : Attacking

Adding Collider

• add Mesh Collider to Player
  • Convex, and is Trigger

UNITY TUTORIAL | PROJECT | SPACE SHOOTER |9. Creating Hazards

Adding Asteroid as Hazard

 

Adding “RigidBody” and “Capsule Collider”

 

adding a script to give Tumbling

setting tumbling speed with a public variable

RigidBody.AngularVelocity | Random.insideUnitSphere

tumbling Asteroid but with Angular Drag

setting Angular Drag to 0

Asteroid tumbling without Angular Drag

adding a script to make destruction

OntriggerEnter to detect any collision | Destroy()

• Destroy(other) – only removing the collider
• Destroy(other.gameObject) – removing only the gameObject with Collider “other”

Bug | something is triggering “Destroy()” function

Debug.Log (other.name)

Debugging 1 | finding the cause

Debugging 2 | finding the cause

Debugging 3 | Tagging “Boundary”

Debugging 4 | detecting any gameObject with a tag “Bounadry” | return

• Return ends the execution of a function and hands the control back the function that called it (maybe Unity itself)
•  Return ends OntriggerEnter Function and returns the control back to Unity’s Game Loop
• As a result, if the object’s tag is “Boundary”, we will never reach or execute “Destroy” function

Debugging 6 | Solved

Asteroid destroyed by Laser

UNITY TUTORIAL | PHYSICS | 3D Physics | Colliders as Trigger

UNITY TUTORIAL

PHYSICS | 3D Physics | Colliders as Trigger

 

Trigger | BoxCollider | Is Trigger

 

Is Trigger

Trigger | BoxCollider | CollisionDetection script

OnTriggerEnter() | OnTriggerStay() | OnTriggerExit()

Falling Object | RigidBody

OnTriggerEnter() | OnTriggerStay() | OnTriggerExit()

Hovering​ Script

Collider.attachedRigidBody | AddForce() | ForceMode.Acceleration()

Hovering Simple

Hovering Force Changing

Freeze Position

Hovering with FallingObject Frozen

 

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