Making a boost for a spaceship with cooldown.

Question

So I've been at this all day, but I'm making a little practice game that is similar to those old arcade space bullet hells, and I want a boost mechanic with a cool down timer, but can't seem to get unity to start the charge timer. This is my current code.

 :Code for moving the ship:
 
 public string GetKey;

 public float startTime;
 public string currentTime;
 public float chargeTime;    
 
 
 void Update () {
         
             
         updateBoost();
         if (chargeTime == 5) // <=== Not seeing the change and starting the countdown for the cool down
         {
             //run the use timer.
             chargeTime -= Time.deltaTime;
             currentTime = string.Format("{0:0.0}", chargeTime);
             print(currentTime);
             
             if (chargeTime <=0)
             {
                 startTime = 5;
                 print("You are ready to boost.");
                 GetKey = "t";    
             }
         }
         
         //Texture movement
         TextureOffset += ScrollSpeed * Time.deltaTime;
         
         GetComponent<Renderer>().material.SetTextureOffset("_MainTex", TextureOffset);    
 
         
             
     }
 
     void updateBoost(){        
 
         if (Input.GetKey(GetKey)){
             TextureOffset += ScrollSpeed * Time.deltaTime * 5;
             
             //run the use timer.
             startTime -= Time.deltaTime;
             currentTime = string.Format("{0:0.0}", startTime);
             print(currentTime);
             
             if (startTime <=0)
             {
                 chargeTime = 5;
                 print("You are out of fuel.");
                 GetKey = "r";
                 
             }
         }
         
         
         
     }

First time posting here, so I think this is everything I need to post. I'm kinda new at this.

Answer 1

     public float startTime;
     public string currentTime;
     public float chargeTime = 0;
     //Added a boolean to disable boost so you don't have to change the key
     public bool boostLeft = true;


     void Update () {
         //Removed updateBoost() and added it to update() so it would be easier for me to figure out what was going on

         //Moved this, not really sure where it belongs
         TextureOffset += ScrollSpeed * Time.deltaTime;
         GetComponent<Renderer>().material.SetTextureOffset("_MainTex", TextureOffset);

         if (Input.GetKey("t") && boostLeft)
         {
             //Not really sure where this belongs, either
             TextureOffset += ScrollSpeed * Time.deltaTime * 5;
             startTime -= Time.deltaTime;
             currentTime = string.Format("{0:0.0}", startTime);
             //Added "Boost Left " to help with cleanliness
             print("Boost Left " + currentTime);
         }
         //Changed this from an if-else to separate if-statements so they are checked individually
         //Added "boostLeft &&) to make sure chargeTime isn't constantly set to 5
         if (boostLeft && startTime <= 0)
         {
             chargeTime = 5;
             boostLeft = false;
             print("You are out of fuel.");
         }

          //Changed to ">0" just in case you want longer or shorter charge times and for another reason I forgot
         if (chargeTime > 0)
         {
             chargeTime -= Time.deltaTime;
             currentTime = string.Format("{0:0.0}", chargeTime);
             //Added "Charging " to help with cleanliness
             print("Charging " + currentTime);
         
             if (chargeTime <=0)
             {
                 boostLeft = true;
                 startTime = 5;
                 print("You are ready to boost.");  
             }
         }
 }

Making a boost for a spaceship with cooldown.

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