Teleportation cells remains teleportation cells after the snake leave them

script.js

@@ -212,9 +212,11 @@ async function startGame(gameID) {
         })
     
     // Teleportation
+    const teleportationCells = []
     if(level.hasOwnProperty("teleportation"))
         level.teleportation.forEach((f) => {
             map[f[0]-1][f[1]-1] = TELEPORTATION
+            teleportationCells.push(JSON.stringify([f[0]-1,f[1]-1]));
         })
 
 
@@ -297,6 +299,10 @@ async function startGame(gameID) {
             if(!increaseSize) {
                 const oldPos = snake.shift()
                 map[oldPos[0]][oldPos[1]] = map[oldPos[0]][oldPos[1]] == ICE_SNAKE ? ICE : EMPTY
+
+                // If the cell was a teleportation cell, then revert it back to the right state
+                if(teleportationCells.includes(JSON.stringify(oldPos)))
+                    map[oldPos[0]][oldPos[1]] = TELEPORTATION
             }
 
             // Check if the user has won