timer

Game/Assets/Scripts/Timer.cs

@@ -0,0 +1,59 @@
+using UnityEngine;
+using TMPro;
+
+public class Timer : MonoBehaviour
+{
+    // By making these public, they will show up in the Unity Inspector
+    public TMP_Text timeText; 
+    public float timeRemaining = 89f; // Give it a starting time!
+    
+    private bool timerIsRunning = false;
+
+    void Update()
+    {
+        // 1. Wait for input to start
+        // If the timer isn't running yet AND we still have time left...
+        if (!timerIsRunning && timeRemaining > 0)
+        {
+            // Update the display so the player sees the starting time
+            DisplayTime(timeRemaining); 
+
+            if (Input.anyKey)
+            {
+                timerIsRunning = true; // Start the clock!
+            }
+            else
+            {
+                return; // Stop the code here until they press a key
+            }
+        }
+        
+        // 2. The countdown logic
+        if (timerIsRunning)
+        {
+            if (timeRemaining > 0)
+            {
+                timeRemaining -= Time.deltaTime;
+                DisplayTime(timeRemaining);
+            }
+            else
+            {
+                // Time has run out! Stop the timer so it doesn't go into negative numbers.
+                timeRemaining = 0;
+                timerIsRunning = false;
+                DisplayTime(timeRemaining);
+                Debug.Log("Time's up!");
+            }
+        }
+    }
+
+    private void DisplayTime(float timeToDisplay)
+    {
+        timeToDisplay += 1;
+
+        float minutes = Mathf.FloorToInt(timeToDisplay / 60); 
+        float seconds = Mathf.FloorToInt(timeToDisplay % 60);
+
+        timeText.text = string.Format("{0:00}:{1:00}", minutes, seconds);
+    }
+}

Game/Assets/Scripts/Timer.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 09abf4d558ce137439bf5eee59bd6c0b