Create Snake.cpp

Snake.cpp

@@ -0,0 +1,211 @@
+// required header file
+#include <conio.h>
+#include <iostream>
+#include <windows.h>
+using namespace std;
+
+// height and width of the boundary
+const int width = 80;
+const int height = 20;
+
+// Snake head coordinates of snake (x-axis, y-axis)
+int x, y;
+// Food coordinates
+int fruitCordX, fruitCordY;
+// variable to store the score of he player
+int playerScore;
+// Array to store the coordinates of snake tail (x-axis,
+// y-axis)
+int snakeTailX[100], snakeTailY[100];
+// variable to store the length of the sanke's tail
+int snakeTailLen;
+// for storing snake's moving snakesDirection
+enum snakesDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
+// snakesDirection variable
+snakesDirection sDir;
+// boolean variable for checking game is over or not
+bool isGameOver;
+
+// Function to initialize game variables
+void GameInit()
+{
+    isGameOver = false;
+    sDir = STOP;
+    x = width / 2;
+    y = height / 2;
+    fruitCordX = rand() % width;
+    fruitCordY = rand() % height;
+    playerScore = 0;
+}
+
+// Function for creating the game board & rendering
+void GameRender(string playerName)
+{
+    system("cls"); // Clear the console
+
+    // Creating top walls with '-'
+    for (int i = 0; i < width + 2; i++)
+        cout << "-";
+    cout << endl;
+
+    for (int i = 0; i < height; i++) {
+        for (int j = 0; j <= width; j++) {
+            // Creating side walls with '|'
+            if (j == 0 || j == width)
+                cout << "|";
+            // Creating snake's head with 'O'
+            if (i == y && j == x)
+                cout << "O";
+            // Creating the sanke's food with '#'
+            else if (i == fruitCordY && j == fruitCordX)
+                cout << "#";
+            // Creating snake's head with 'O'
+            else {
+                bool prTail = false;
+                for (int k = 0; k < snakeTailLen; k++) {
+                    if (snakeTailX[k] == j
+                        && snakeTailY[k] == i) {
+                        cout << "o";
+                        prTail = true;
+                    }
+                }
+                if (!prTail)
+                    cout << " ";
+            }
+        }
+        cout << endl;
+    }
+
+    // Creating bottom walls with '-'
+    for (int i = 0; i < width + 2; i++)
+        cout << "-";
+    cout << endl;
+
+    // Display player's score
+    cout << playerName << "'s Score: " << playerScore
+         << endl;
+}
+
+// Function for updating the game state
+void UpdateGame()
+{
+    int prevX = snakeTailX[0];
+    int prevY = snakeTailY[0];
+    int prev2X, prev2Y;
+    snakeTailX[0] = x;
+    snakeTailY[0] = y;
+
+    for (int i = 1; i < snakeTailLen; i++) {
+        prev2X = snakeTailX[i];
+        prev2Y = snakeTailY[i];
+        snakeTailX[i] = prevX;
+        snakeTailY[i] = prevY;
+        prevX = prev2X;
+        prevY = prev2Y;
+    }
+
+    switch (sDir) {
+    case LEFT:
+        x--;
+        break;
+    case RIGHT:
+        x++;
+        break;
+    case UP:
+        y--;
+        break;
+    case DOWN:
+        y++;
+        break;
+    }
+
+    // Checks for snake's collision with the wall (|)
+    if (x >= width || x < 0 || y >= height || y < 0)
+        isGameOver = true;
+
+    // Checks for collision with the tail (o)
+    for (int i = 0; i < snakeTailLen; i++) {
+        if (snakeTailX[i] == x && snakeTailY[i] == y)
+            isGameOver = true;
+    }
+
+    // Checks for snake's collision with the food (#)
+    if (x == fruitCordX && y == fruitCordY) {
+        playerScore += 10;
+        fruitCordX = rand() % width;
+        fruitCordY = rand() % height;
+        snakeTailLen++;
+    }
+}
+
+// Function to set the game difficulty level
+int SetDifficulty()
+{
+    int dfc, choice;
+    cout << "\nSET DIFFICULTY\n1: Easy\n2: Medium\n3: hard "
+            "\nNOTE: if not chosen or pressed any other "
+            "key, the difficulty will be automatically set "
+            "to medium\nChoose difficulty level: ";
+    cin >> choice;
+    switch (choice) {
+    case '1':
+        dfc = 50;
+        break;
+    case '2':
+        dfc = 100;
+        break;
+    case '3':
+        dfc = 150;
+        break;
+    default:
+        dfc = 100;
+    }
+    return dfc;
+}
+
+// Function to handle user UserInput
+void UserInput()
+{
+    // Checks if a key is pressed or not
+    if (_kbhit()) {
+        // Getting the pressed key
+        switch (_getch()) {
+        case 'a':
+            sDir = LEFT;
+            break;
+        case 'd':
+            sDir = RIGHT;
+            break;
+        case 'w':
+            sDir = UP;
+            break;
+        case 's':
+            sDir = DOWN;
+            break;
+        case 'x':
+            isGameOver = true;
+            break;
+        }
+    }
+}
+
+// Main function / game looping function
+int main()
+{
+    string playerName;
+    cout << "enter your name: ";
+    cin >> playerName;
+    int dfc = SetDifficulty();
+
+    GameInit();
+    while (!isGameOver) {
+        GameRender(playerName);
+        UserInput();
+        UpdateGame();
+        // creating a delay for according to the chosen
+        // difficulty
+        Sleep(dfc);
+    }
+
+    return 0;
+}