Initial Commit

Author: thecoder-ashish

RockPaperScissor.cpp

@@ -0,0 +1,242 @@
+#include <conio.h>
+#include <time.h>
+
+#include <algorithm>
+#include <iostream>
+#include <string>
+
+using namespace std;
+
+// Global variable as it will required at multiple fuctions.
+string options[3] = {"Rock", "Paper", "Scissor"};
+
+void game1p();
+void game2p();
+int isP1Point(string, string);
+int p1Won(int, int);
+void endMsg(int, int, int);
+void endMsg2p(int, int, int, string, string);
+void playAgain();
+void p1p2();
+
+int main() {
+    // Game starts here
+    p1p2();
+    return 0;
+}
+
+// p1p2() will check if the user wants to play 1 player mode or 2p mode, and will call the fuction required respectively
+void p1p2() {
+    int noOfPlayers;
+    cout << "Enter the number of players (1/2): ";
+    cin >> noOfPlayers;
+    cin.ignore(1, '\n');
+
+    if (noOfPlayers == 1) {
+        game1p();
+    } else if (noOfPlayers == 2) {
+        game2p();
+    } else {
+        p1p2();
+    }
+}
+
+// Function for 1p mode
+void game1p() {
+    int rounds;
+    int userPoints = 0, cpuPoints = 0;
+
+    cout << "Enter no. of rounds: ";
+    cin >> rounds;
+
+    for (int i = 0; i < rounds; i++) {
+        // Generating random number between 0-2
+        srand(time(0));
+        int ranNum = rand() % 3;
+        string cpu = options[ranNum];  // Use the random number to get random of Rock, Paper or Scissor
+
+        int userInp;
+        cout << "\nCpu has choosen. Now, ";
+
+        // The loop will execute till the user choose and of the valid options
+        bool wrongInp = 1;
+        while (wrongInp) {
+            cout << "choose one of the below:-\n'1' for Rock\n'2' for Paper\n'3' for Scissor\n:";
+            cin >> userInp;
+
+            // If the input is not 0,1,
+            if (userInp != 1 && userInp != 2 && userInp != 3) {
+                cout << "Please enter valid input!!!\n";
+                continue;
+            }
+            wrongInp = 0;  // If the input is valid, `wrongInp = 0` will help to break the loop
+        }
+
+        string user = options[userInp - 1];
+
+        int result = isP1Point(user, cpu);
+        if (result == 0) {
+            userPoints++;
+            cpuPoints++;
+            cout << "It's a draw!! CPU and you both chose " << cpu << ".\nYour points = " << userPoints << "\nCPU's points = " << cpuPoints;
+        } else if (result == 1) {
+            userPoints += 1;
+            cout << "Congrats! You won this round. Your choice - " << user << " CPU Choice - " << cpu << "\nYour points = " << userPoints << "\nCPU's points = " << cpuPoints;
+        } else {
+            cpuPoints++;
+            cout << "Oops! You should have chose something else. Your choice - " << user << " CPU Choice - " << cpu << "\nYour points = " << userPoints << "\nCPU's points = " << cpuPoints;
+        }
+    }
+    int whoWon = p1Won(userPoints, cpuPoints);
+    endMsg(whoWon, userPoints, cpuPoints);
+    playAgain();
+}
+
+// Fuction for 2p mode
+void game2p() {
+    int p1Points = 0, p2Points = 0;
+    string p1, p2;
+    cout << "Player 1, please enter your name: ";
+    getline(cin, p1);
+
+    cout << "Player 2, please enter your name: ";
+    getline(cin, p2);
+
+    int rounds;
+    cout << "Enter no. of Rounds: ";
+    cin >> rounds;
+
+    for (int i = 0; i < rounds; i++) {
+        char p1Inp, p2Inp;    // We don't want to show what the player enters wo we will get an char using getch() and later store it in int variable.
+        int p1Int, p2Int;     // This is where we will store the input number in int.
+        string p1opt, p2opt;  // This will store the final option (what the player have choosen).
+        bool wrognInp = 1;
+        while (wrognInp) {
+            cout << endl
+                 << p1 << " type:-\n'1' for Rock\n'2' for Paper\n'3' for Scissor\n:";
+            p1Inp = getch();
+            p1Int = (p1Inp - '0') - 1;  // {var} - '0' will convert p1Inp from char to int.
+            p1opt = options[p1Int];
+
+            // We are checking for 0,1 and 2 as we already have subtracted 1 from it for getting an option from "options"
+            if ((p1Int != 0) && (p1Int != 1) && (p1Int != 2)) {
+                cout << "Please enter valid input!!!\n";
+                continue;
+            }
+            wrognInp = 0;
+        }
+        wrognInp = 1;
+        while (wrognInp) {
+            cout << "\nNow " << p2 << " its your turn, type:-\n'1' for Rock\n'2' for Paper\n'3' for Scissor\n:";
+            p2Inp = getch();
+            p2Int = (p2Inp - '0') - 1;  // {var} - '0' will convert p2Inp from char to int.
+            p2opt = options[p2Int];
+            if ((p2Int != 0) && (p2Int != 1) && (p2Int != 2)) {
+                cout << "Please enter valid input!!!\n";
+                continue;
+            }
+            wrognInp = 0;
+        }
+
+        int whosePoint = isP1Point(p1opt, p2opt);
+        if (whosePoint == 1) {
+            p1Points++;
+            cout << endl
+                 << p1 << " chose " << p1opt << " and " << p2 << " chose " << p2opt << ", and it's " << p1 << "'s point.\nPoints:-\n"
+                 << p1 << "'s points = " << p1Points << endl
+                 << p2 << "'s points = " << p2Points << endl;
+        } else if (whosePoint == 0) {
+            p1Points++;
+            p2Points++;
+            cout << endl
+                 << "Oh you both chose " << p1opt << ".\nPoints:-\n"
+                 << p1 << "'s points = " << p1Points << endl
+                 << p2 << "'s points = " << p2Points << endl;
+        } else {
+            p2Points++;
+            cout << endl
+                 << p2 << " beats " << p1 << " by choosing " << p2opt << " over " << p1opt << ".\nPoints:-\n"
+                 << p1 << "'s points = " << p1Points << endl
+                 << p2 << "'s points = " << p2Points << endl;
+        }
+    }
+    int whoWon = p1Won(p1Points, p2Points);
+    endMsg2p(whoWon, p1Points, p2Points, p1, p2);
+    playAgain();
+}
+
+// Function to check if its player1's point, player2/cpu's points or a draw
+int isP1Point(string p1, string p2) {
+    if (p1 == "Rock" && p2 == "Scissor") {
+        return 1;
+    } else if (p1 == "Rock" && p2 == "Paper") {
+        return -1;
+    } else if (p1 == "Paper" && p2 == "Rock") {
+        return 1;
+    } else if (p1 == "Paper" && p2 == "Scissor") {
+        return -1;
+    } else if (p1 == "Scissor" && p2 == "Paper") {
+        return 1;
+    } else if (p1 == "Scissor" && p2 == "Rock") {
+        return -1;
+    }
+    // Will return 0 if its a draw
+    return 0;
+}
+
+// Function to check if player1 won, player2/cpu won or its a draw
+int p1Won(int p1Points, int p2Points) {
+    if (p1Points > p2Points) {
+        return 1;
+    } else if (p1Points < p2Points) {
+        return -1;
+    }
+    return 0;  // if tied
+}
+
+// It willl print the final score and the winner
+void endMsg(int whoWon, int userPoints, int cpuPoints) {
+    if (whoWon == 0) {
+        cout << "\n\nGG boii, both ended up with " << userPoints << " points." << endl;
+    } else if (whoWon == 1) {
+        cout << "\n\nYou deserve this win man!\nFinal Points:-\nYour points = " << userPoints << "\nCPU's points = " << cpuPoints << endl;
+    } else {
+        cout << "\n\nBetter luck next time.\nYou ended with " << userPoints << " and I ended up with " << cpuPoints << " points." << endl;
+    }
+}
+
+// Same as "endMsg but for 2p mode"
+void endMsg2p(int whoWon, int p1Points, int p2Points, string p1, string p2) {
+    if (whoWon == 0) {
+        cout << "\n\nGG boii, both ended up with " << p1Points << " points." << endl;
+    } else if (whoWon == 1) {
+        cout << endl
+             << endl
+             << p1 << ", you deserve this win man!\nFinal Points:-\n"
+             << p1 << "'s points = " << p1Points << endl
+             << p2 << "'s points = " << p2Points << endl;
+    } else {
+        cout << endl
+             << endl
+             << p1 << ", better luck next time.\nYou ended with " << p1Points << " and " << p2 << " ended up with " << p2Points << " points." << endl;
+    }
+}
+
+// Function to check if the user wants to play again
+void playAgain() {
+    string again;
+    cout << "\nDo you want to play again? (y/n): ";
+    cin >> again;
+
+    transform(again.begin(), again.end(), again.begin(), ::tolower);  // It will transform the user input to lower case
+
+    if (again == "y" || again == "yes") {
+        p1p2();
+    } else if (again == "n" || again == "no") {
+        cout << "\n\nThank you for playing the game. See you again.\n(Press any key to exit)";
+        getch();
+    } else {
+        cout << "!!!Invalid Input!!!";
+        playAgain();
+    }
+}