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Question by KhrisSutherland · Apr 20, 2017 at 05:56 PM · c#raycastscripting beginnervariables

Changing a variable in another script on Raycast hit - C#

I'm trying to have a variable (Health), in the script of another game object, change when a RayCast hits said object. Here's what I have so far:

 void Update () {
         
         Debug.DrawRay (this.transform.position, this.transform.forward * RaycastDistance, Color.red);
 
         if(Physics.Raycast(this.transform.position, this.transform.forward, out WhatIHit, RaycastDistance))
         {
             Debug.Log ("I hit " + WhatIHit.collider.gameObject.name);
             WhatIHit.collider.GetComponent
         }
     }

What would I need to add after "GetComponent" to have the Health value in the other object subtract by 5 every time the raycast hits the object?

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Answer by Commoble · Apr 20, 2017 at 05:56 PM

 // get a component of type ScriptType from the hit object
 ScriptType script = WhatIHit.collider.GetComponent<ScriptType>();
 
 // make sure the hit object has this component
 if (script != null)
 {
     script.health -= 5;    // 5 if it's an integer, 5F if it's a float
 }
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avatar image KhrisSutherland · Apr 24, 2017 at 07:10 PM 0
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Alright, I've got this so far. I don't know if it's right though. Also, I don't know where I would put the ScriptType line.

      void Update () {
          
          Debug.DrawRay (this.transform.position, this.transform.forward * RaycastDistance, Color.red);
  
          if(Physics.Raycast(this.transform.position, this.transform.forward, out WhatIHit, RaycastDistance))
          {
              Debug.Log ("I hit " + WhatIHit.collider.gameObject.name);
          }
          if (Statistics != null) {
              Statistics.Health -= 5;
          }
      }
avatar image cJhammond · Oct 28, 2019 at 11:55 PM 0
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What is the "using directive" for ScriptType? Or must we create the directive manually? @Commoble

avatar image cJhammond · Oct 29, 2019 at 08:22 AM 0
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What is the "using directive" for ScriptType? Or is ScriptType a directive that needs to be created manually?

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