demo pull request

script.js

@@ -1,4 +1,254 @@
+// global variables
+var winCount = 0;
+var playCount = 0;
+var gameMode = "Username Input";
+var userName = "";
+var modeChangeFlag = 0;
+var lastWinner = "";
+var lastKoreanWinner = "";
+
 var main = function (input) {
-  var myOutputValue = 'hello world';
+  console.log(gameMode);
+  var myOutputValue = "";
+  if (gameMode == "Username Input") {
+    userName = input;
+    gameMode = "SPS mode";
+    return (
+      " Hello " +
+      userName +
+      "! Please type Scissors, Paper or Stone to play the game"
+    );
+  }
+
+  modeChangeChecker(input);
+  if (modeChangeFlag == 1) {
+    modeChangeFlag = 0;
+    return `Current mode is ${gameMode}`;
+  }
+
+  // plays game based on mode
+  if (gameMode == "SPS mode") {
+    myOutputValue = playGame(input.toLowerCase().trim(), SPS());
+  }
+  if (gameMode == "Reverse mode") {
+    myOutputValue = playReversedGame(input, SPS());
+  }
+  if (gameMode == "Computer mode") {
+    myOutputValue = playGame(SPS(), SPS());
+  }
+  if (gameMode == "Korean mode") {
+    if (lastKoreanWinner == "") {
+      myOutputValue = playKoreanGame(input, SPS());
+    } else if (lastKoreanWinner == userName) {
+      myOutputValue = playKoreanGame(input, SPS());
+      if (lastKoreanWinner == "Draw") {
+        winCount++;
+        playCount++;
+        myOutputValue +=
+          " You won the Korean game <br>" +
+          winRateMessage(winCount, playCount, userName);
+        lastKoreanWinner = "";
+      }
+    } else if (lastKoreanWinner == "Computer") {
+      myOutputValue = playKoreanGame(input, SPS());
+      if (lastKoreanWinner == "Draw") {
+        playCount++;
+        myOutputValue +=
+          " You lost the Korean game <br>" +
+          winRateMessage(winCount, playCount, userName);
+        lastKoreanWinner = "";
+      }
+    } else if (lastKoreanWinner == "Draw") {
+      myOutputValue = playKoreanGame(input, SPS());
+    }
+    console.log(lastKoreanWinner);
+  }
+
   return myOutputValue;
 };
+
+//function to generate random choice
+function SPS() {
+  const hands = ["scissors", "paper", "stone"];
+  return hands[Math.floor(Math.random() * 3)];
+}
+
+// to decide on who won the game
+function playGame(player, computer) {
+  if (player == computer) {
+    return draw(player, computer);
+  } else if (player == "scissors") {
+    if (computer == "stone") {
+      return lose(player, computer);
+    } else if (computer == "paper") {
+      return win(player, computer);
+    }
+  } else if (player == "paper") {
+    if (computer == "scissors") {
+      return lose(player, computer);
+    } else if (computer == "stone") {
+      return win(player, computer);
+    }
+  } else if (player == "stone") {
+    if (computer == "paper") {
+      return lose(player, computer);
+    } else if (computer == "scissors") {
+      return win(player, computer);
+    }
+  } else {
+    return "Please enter only scissors,paper or stone";
+  }
+}
+
+// adds some cute emoji to messages
+function cuteSelector(input) {
+  if (input == "paper") {
+    return "🖐";
+  } else if (input == "scissors") {
+    return "✌";
+  } else if (input == "stone") {
+    return "✊";
+  }
+}
+
+//winning message
+function win(player, computer) {
+  winCount++;
+  playCount++;
+  lastWinner = userName;
+  return `You won! You chose ${player}${cuteSelector(
+    player
+  )} and the computer chose ${computer}${cuteSelector(
+    computer
+  )}. <br>${winRateMessage(winCount, playCount, userName)}`;
+}
+
+//losing message
+function lose(player, computer) {
+  playCount++;
+  lastWinner = "Computer";
+  return `You lost! You chose ${player}${cuteSelector(
+    player
+  )} and the computer chose ${computer}${cuteSelector(computer)}.
+  <br>${winRateMessage(winCount, playCount, userName)}`;
+}
+
+//draw message
+function draw(player, computer) {
+  playCount++;
+  lastWinner = "Draw";
+  return `Draw! You chose ${player}${cuteSelector(
+    player
+  )} and the computer chose ${computer}${cuteSelector(
+    computer
+  )}.<br>${winRateMessage(winCount, playCount, userName)} `;
+}
+
+//function to determine who wins the reversed game
+function playReversedGame(player, computer) {
+  if (player == computer) {
+    return draw(player, computer);
+  } else if (player == "scissors") {
+    if (computer == "stone") {
+      return win(player, computer);
+    } else if (computer == "paper") {
+      return lose(player, computer);
+    }
+  } else if (player == "paper") {
+    if (computer == "scissors") {
+      return win(player, computer);
+    } else if (computer == "stone") {
+      return lose(player, computer);
+    }
+  } else if (player == "stone") {
+    if (computer == "paper") {
+      return win(player, computer);
+    } else if (computer == "scissors") {
+      return lose(player, computer);
+    }
+  } else {
+    return "Please enter only scissors,paper or stone";
+  }
+}
+// function to vary the output message based on win rate
+function winRateMessage(wins, plays, name) {
+  let winrate = wins / plays;
+  let outputMessage = "";
+
+  if (winrate >= 0.75) {
+    outputMessage = `Good job ${name}, you have won ${wins} out of ${plays} times`;
+  } else if (winrate <= 0.25) {
+    outputMessage = `Try harder ${name}, you have won ${wins} out of ${plays} times`;
+  } else {
+    outputMessage = `You have won ${wins} out of ${plays} times`;
+  }
+  return outputMessage;
+}
+
+// checks whether mode change is requested and initiates the change via modeChangeFlag
+function modeChangeChecker(mode) {
+  if (mode.toLowerCase().includes("normal")) {
+    gameMode = "SPS mode";
+    modeChangeFlag = 1;
+    return "Normal mode. Enter Scissors,Paper or Stone to play";
+  } else if (mode.toLowerCase().includes("reverse")) {
+    gameMode = "Reverse mode";
+    modeChangeFlag = 1;
+    return "Reverse mode. Enter Scissors,Paper or Stone to play";
+  } else if (mode.toLowerCase().includes("computer")) {
+    gameMode = "Computer mode";
+    modeChangeFlag = 1;
+    return "Computer mode. Press submit button to play";
+  } else if (mode.toLowerCase().includes("korean")) {
+    gameMode = "Korean mode";
+    modeChangeFlag = 1;
+    return "Korean mode. ";
+  }
+}
+// to settle the korean game
+function playKoreanGame(player, computer) {
+  if (player == computer) {
+    lastKoreanWinner = "Draw";
+    return `Draw! You chose ${player}${cuteSelector(
+      player
+    )} and the computer chose ${computer}${cuteSelector(computer)}`;
+  } else if (player == "scissors") {
+    if (computer == "stone") {
+      lastKoreanWinner = "Computer";
+      return `Lose! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    } else if (computer == "paper") {
+      lastKoreanWinner = userName;
+      return `Win! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    }
+  } else if (player == "paper") {
+    if (computer == "scissors") {
+      lastKoreanWinner = "Computer";
+      return `Lose! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    } else if (computer == "stone") {
+      lastKoreanWinner = userName;
+      return `Win! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    }
+  } else if (player == "stone") {
+    if (computer == "paper") {
+      lastKoreanWinner = "Computer";
+      return `Lose! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    } else if (computer == "scissors") {
+      lastKoreanWinner = userName;
+      return `Win! You chose ${player}${cuteSelector(
+        player
+      )} and the computer chose ${computer}${cuteSelector(computer)}`;
+    }
+  } else {
+    return "Please enter only scissors,paper or stone";
+  }
+}