From a1d86193ee257f06ab1548e73f1dc91423f5a49a Mon Sep 17 00:00:00 2001
From: AyushGupta011 <ayuagrahari4@gmail.com>
Date: Fri, 17 Oct 2025 00:37:59 +0530
Subject: [PATCH] Fix snake game boundary mode and added boundary feature such
 that if the snake touched the boundary it looses

---
 projects/snake/index.html | 10 +++++++++
 projects/snake/main.js    | 44 ++++++++++++++++++++++++++++++++++-----
 projects/snake/styles.css | 15 +++++++++++++
 3 files changed, 64 insertions(+), 5 deletions(-)

diff --git a/projects/snake/index.html b/projects/snake/index.html
index d8b055e..2d0f3b1 100644
--- a/projects/snake/index.html
+++ b/projects/snake/index.html
@@ -26,6 +26,16 @@ <h1>Snake Game</h1>
             <div class="controls">
                 <button id="startBtn">Start</button>
                 <label>Speed <input id="speed" type="range" min="1" max="10" value="5"></label>
+             
+ 
+            </div>
+            <div class="mode-container">
+                 <label>   Mode
+  <select id="mode">
+    <option value="normal">Normal</option>
+    <option value="boundary">Boundary Mode</option>
+  </select>
+</label>
             </div>
         </div>
 
diff --git a/projects/snake/main.js b/projects/snake/main.js
index 529d858..4a13320 100644
--- a/projects/snake/main.js
+++ b/projects/snake/main.js
@@ -3,6 +3,7 @@ import { ScoreManager } from "./score.js";
 const canvas = document.getElementById('board');
 const ctx = canvas.getContext('2d');
 const size = 20;
+let gameMode = "normal";
 
 // ------------------ INITIALIZE SNAKES ------------------ //
 let snakeA = [{ x: 3, y: 3 }];
@@ -28,6 +29,7 @@ function reset() {
     gameRunning = true;
     gamePaused = false;
     updateButtonText();
+      gameMode = document.getElementById("mode").value;
     draw();
 }
 
@@ -41,8 +43,8 @@ function spawnFood() {
 function tick() {
     if (!gameRunning || gamePaused) return;
 
-    moveSnake(snakeA, dirA, "A");
-    moveSnake(snakeB, dirB, "B");
+    if(!moveSnake(snakeA, dirA, "A")) return;
+    if(!moveSnake(snakeB, dirB, "B")) return;
 
     if (checkCollision(snakeA) || checkCollision(snakeB) || checkSnakeCollision(snakeA, snakeB)) {
         let { scoreA, scoreB } = ScoreManager.getScores();
@@ -57,8 +59,30 @@ function tick() {
 function moveSnake(snake, dir, player) {
     const head = { x: snake[0].x + dir.x, y: snake[0].y + dir.y };
 
-    head.x = (head.x + canvas.width / size) % (canvas.width / size);
-    head.y = (head.y + canvas.height / size) % (canvas.height / size);
+    // head.x = (head.x + canvas.width / size) % (canvas.width / size);
+    // head.y = (head.y + canvas.height / size) % (canvas.height / size);
+    if (gameMode === "normal") {
+
+  head.x = (head.x + canvas.width / size) % (canvas.width / size);
+  head.y = (head.y + canvas.height / size) % (canvas.height / size);
+} else {
+
+  if (
+    head.x < 0 ||
+    head.x >= canvas.width / size ||
+    head.y < 0 ||
+    head.y >= canvas.height / size
+  ) {
+    const winner = player === "A" ? "Player B" : "Player A";
+     stop();                 
+    gameRunning = false;    
+    gamePaused = false;     
+    updateButtonText();  
+    gameOver(winner);
+    return false;
+  }
+}
+
 
     snake.unshift(head);
 
@@ -68,6 +92,8 @@ function moveSnake(snake, dir, player) {
     } else {
         snake.pop();
     }
+
+    return true;
 }
 
 function checkCollision(snake) {
@@ -112,6 +138,12 @@ function draw() {
     for (let y = 0; y < canvas.height; y += size) {
         ctx.beginPath(); ctx.moveTo(0, y); ctx.lineTo(canvas.width, y); ctx.stroke();
     }
+    if (gameMode === "boundary") {
+  ctx.strokeStyle = "#ff0000";
+  ctx.lineWidth = 3;
+  ctx.strokeRect(1, 1, canvas.width - 2, canvas.height - 2);
+}
+
 
     // Pause overlay
     if (gamePaused) {
@@ -182,7 +214,9 @@ document.addEventListener('keydown', (e) => {
 });
 
 // ------------------ EVENT LISTENERS ------------------ //
-
+document.getElementById("mode").addEventListener("change", function () {
+  gameMode = this.value;
+});
 document.getElementById('startBtn').addEventListener('click', handleButtonClick);
 document.getElementById('speed').addEventListener('input', function () {
     if (gameRunning && !gamePaused) {
diff --git a/projects/snake/styles.css b/projects/snake/styles.css
index 63f2c73..e898f38 100644
--- a/projects/snake/styles.css
+++ b/projects/snake/styles.css
@@ -83,6 +83,21 @@ input[type="range"] {
     width: 120px;
     margin-left: 10px;
 }
+#mode {
+  background-color: #2b2b44;
+  color: #fff;
+  border: 2px solid  #00ff00;
+  border-radius: 10px;
+  padding: 6px 12px;
+  font-size: 14px;
+  cursor: pointer;
+  transition: 0.2s ease;
+  
+}
+
+.mode-container{
+    margin-left: 7.5rem;
+}
 
  
 .rules {