Add skeleton of the game

fastest_presser/platformio.ini

@@ -12,3 +12,4 @@
 platform = atmelavr
 board = uno
 framework = arduino
+lib_deps = arduino-libraries/LiquidCrystal@^1.0.7

fastest_presser/src/main.cpp

@@ -1,8 +1,51 @@
 #include <Arduino.h>
+#include <LiquidCrystal.h>
+#include <main.h>
+
+LiquidCrystal lcd(12, 11, 2, 3, 4, 5);
+
 void setup() {
-// write your initialization code here
+    pinMode(LED_BUILTIN, OUTPUT);
+    digitalWrite(LED_BUILTIN, LOW);
+    randomSeed(analogRead(0));
+    lcd.begin(16, 2);
 }
 
 void loop() {
-// write your code here
-}
+    displayCountdown();
+    delay(1000);
+    byte randomWait = random(6, 32);
+    lcd.clear();
+    for (byte i = 0; i < randomWait; i++) {
+        if (i == 16) {
+            lcd.setCursor(0, 1);
+        }
+        lcd.print(".");
+        delay(500);
+    }
+    lcd.clear();
+    lcd.print("Maintenant !");
+    // TODO add code to determine winner, maybe use interrupts?
+    delay(2000);
+    lcd.clear();
+}
+
+void displayCountdown() {
+    lcd.setCursor(0, 0);
+    lcd.print("Prets ?");
+    lcd.setCursor(0, 1);
+    displayDigit("3");
+    delay(600);
+    displayDigit("2");
+    delay(600);
+    displayDigit("1");
+}
+
+void displayDigit(const char *digit) {
+    lcd.print(digit);
+    for (byte i = 0; i < 3; i++) {
+        delay(200);
+        lcd.print(".");
+    }
+    lcd.print(" ");
+}

fastest_presser/src/main.h

@@ -0,0 +1,11 @@
+//
+// Created by Gabriel Augendre on 28/04/2021.
+//
+
+#ifndef FASTEST_PRESSER_MAIN_H
+#define FASTEST_PRESSER_MAIN_H
+
+void displayCountdown();
+void displayDigit(const char *digit);
+
+#endif //FASTEST_PRESSER_MAIN_H