From b7f1dbf1485e3cd4b568b0eceea9267e195252ea Mon Sep 17 00:00:00 2001
From: Pierre Hubert <pierre.git@communiquons.org>
Date: Sun, 29 Mar 2020 17:05:54 +0200
Subject: [PATCH] Make the ice "live"

---
 script.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/script.js b/script.js
index 9f17325..f793aaf 100644
--- a/script.js
+++ b/script.js
@@ -333,6 +333,8 @@ async function startGame(gameID) {
                         ctx.fillStyle = "white";
                         ctx.fillRect(x*cell_width, y*cell_height, cell_width, cell_height)
 
+                        // If the snake is on the cell, we must render it too.
+                        // That's why I put a condition to this break
                         if(map[y][x] == ICE)
                             break;
 
@@ -401,8 +403,15 @@ async function startGame(gameID) {
     document.body.addEventListener("keydown", (ev) => {
         if(!canvas.isConnected)
             return;
-        if(["ArrowDown", "ArrowLeft", "ArrowRight", "ArrowUp"].includes(ev.key))
+        if(["ArrowDown", "ArrowLeft", "ArrowRight", "ArrowUp"].includes(ev.key)) {
+         
+            // Check if the snake is on some ice
+            const headPos = snake[snake.length-1];
+            if(map[headPos[0]][headPos[1]] == ICE_SNAKE)
+                return;
+
             key = ev.key;
+        }
         
         if(ev.key == "p") {
             audioEl.pause()