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Question by Naotagrey · May 28, 2018 at 01:34 AM · gameobjectpointeriterateunsafe

Can I create a pointer to poll a float from any source ?

Is there a way to access any variable by reference in an object without hard-coding it for every possible combination?

I'm developing on unity and I want to add a module in my game that could watch any particular float in a GameObject to then change another float in another GameObject once it reaches a certain value.

As an example: A "Trigger" Object/Module which set the value of Hunger=1 in a brain Object when the value of Fullness<0.5 is reached in a stomach Object.

As I'll have a big number of possible combinations I don't want to hardcode it by creating a daughter of the Trigger Class for each of them.

My initial idea was to use pointers that would be directed to the good floats to watch/change upon initialization. But apparently, we can't use unsafe code inside iterators (IEnumerator) so I'm not sure how to poll the value of Fullness.

To give an example of what I would like :

     public Class Trigger{
         private float* ToPoll;
         private float* ToChange;
         
         public void SetTrigger(float* poll, float* change){
             ToPoll = poll;
             ToChange = change;
 
             // the loop would be a IEnumerator, not a litteral loop
             while(*ToPoll < 0.5f){
                 sleep(0.1)
             }
             *ToChange = 1f
         }
     }
 
     void Main(){
         Trigger trigger1, trigger2;
         trigger1.SetTrigger(&Stomach.fullness, &Brain.hunger)
         trigger2.SetTrigger(&Sun.activityLevel, &Earth.radiationLevel)
         // ^ Literally any float from any object
     }

Do you have any ideas how to or better ways to implement it?

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