Extending the user interface to avoid the X after a winner is crowned.

docs/projects/reaction-time/code.md

@@ -306,3 +306,91 @@ input.onPinPressed(TouchPin.P2, function () {
     }
 })
 ```
+
+## Extending the Extension
+
+One effect of the extension is the **X** for a false start shows for the person loosing the game. We can extend the code some more to avoid the **X** showing up on the person loosing the game. The following example uses a new variable to flag the winner and avoid the **X** after a winner is crowned.
+
+```blocks
+input.onPinPressed(TouchPin.P0, function () {
+    running = false
+    false_start = false
+    Winner = 0
+    basic.showNumber(3)
+    basic.showNumber(2)
+    basic.showNumber(1)
+    basic.clearScreen()
+    basic.pause(1000 + randint(0, 2000))
+    if (!(false_start)) {
+        start = input.runningTime()
+        running = true
+        led.stopAnimation()
+        basic.clearScreen()
+        led.plotBrightness(randint(0, 4), randint(0, 4), 255)
+    }
+})
+input.onPinPressed(TouchPin.P2, function () {
+    if (running) {
+        running = false
+        end = input.runningTime()
+        Winner = 2
+        basic.showLeds(`
+            . . . # #
+            . . . # #
+            . . . # #
+            . . . # #
+            . . . # #
+            `)
+        basic.pause(1000)
+        basic.showNumber(end - start)
+    } else if (Winner == 1) {
+
+    } else {
+        false_start = true
+        basic.showLeds(`
+            . . . . .
+            . . # . #
+            . . . # .
+            . . # . #
+            . . . . .
+            `)
+    }
+})
+input.onPinPressed(TouchPin.P1, function () {
+    if (running) {
+        running = false
+        end = input.runningTime()
+        Winner = 1
+        basic.showLeds(`
+            # # . . .
+            # # . . .
+            # # . . .
+            # # . . .
+            # # . . .
+            `)
+        basic.pause(1000)
+        basic.showNumber(end - start)
+    } else if (Winner == 2) {
+
+    } else {
+        false_start = true
+        basic.showLeds(`
+            . . . . .
+            # . # . .
+            . # . . .
+            # . # . .
+            . . . . .
+            `)
+    }
+})
+let Winner = 0
+let start = 0
+let end = 0
+let false_start = false
+let running = false
+running = false
+false_start = false
+end = 0
+start = 0
+Winner = 0
+```