Catch a couple special cases

- Light the first pixel on timer start
- Wait to light the last pixel until timer has truly elapsed

colorbar-fastloop.py

@@ -111,18 +111,34 @@ def countdown(
 
             # Do update stuff
 
-            # Loop over every pixel ID that should be lit
-            #   based on the elapsed time
-            for pixel in range(round(num_pixels * ((seconds - current_time) / seconds))):
-                # Set pixel color stuff
-                if current_time < 0:
-                    pass
-                elif current_time <= redtime:
-                    colorizer(pixel, colormode, red=True)
-                elif current_time <= yellowtime:
-                    colorizer(pixel, colormode, yellow=True)
-                else:
-                    colorizer(pixel, colormode)
+            # Calculate the current position
+            current_position = round(num_pixels * ((seconds - current_time) / seconds))
+
+            # Catch a couple of special cases
+            if current_position == 0:
+                # Light the first LED when the timer starts
+                #  regardless of other factors
+                colorizer(0, colormode)
+            elif current_position == num_pixels and current_time > 0:
+                # If current_position calls for *all*
+                #  pixels to be lit, and the timer
+                #  hasn't expired yet, don't do anything.
+                #  This should delay the last pixel from
+                #  lighting until the timer has fully elapsed
+                pass
+            else:
+                # Loop over every pixel ID that should be lit
+                #   based on the elapsed time
+                for pixel in range(current_position):
+                    # Set pixel color stuff
+                    if current_time < 0:
+                        pass
+                    elif current_time <= redtime:
+                        colorizer(pixel, colormode, red=True)
+                    elif current_time <= yellowtime:
+                        colorizer(pixel, colormode, yellow=True)
+                    else:
+                        colorizer(pixel, colormode)
 
             # Display the result IRL
             pixels.show()
@@ -131,9 +147,13 @@ def countdown(
             current_time -= update_interval
 
             # Massage the current_time seconds count into human-readable minutes:seconds
-            display_time = divmod(abs(current_time), 60)
+            display_time = str(datetime.timedelta(seconds=abs(current_time)))[3:]
             if current_time < 0:
                 display_time_sign = "-"
             else:
                 display_time_sign = " "
-            print("current time: " + display_time_sign + str(display_time[0]) + ":" + str(display_time[1]))
+            print("current time: " + display_time_sign + display_time)
+
+
+
+