Function check

assets/js/maze.js:394–443

(e)

    }

    function check(e) {
        var cell = map[cellCoords.x][cellCoords.y];
        moves++;
        switch (e.keyCode) {
            case 65:
            case 37: // west
                if (cell.w == true) {
                    removeSprite(cellCoords);
                    cellCoords = {
                        x: cellCoords.x - 1,
                        y: cellCoords.y
                    };
                    drawSprite(cellCoords);
                }
                break;
            case 87:
            case 38: // north
                if (cell.n == true) {
                    removeSprite(cellCoords);
                    cellCoords = {
                        x: cellCoords.x,
                        y: cellCoords.y - 1
                    };
                    drawSprite(cellCoords);
                }
                break;
            case 68:
            case 39: // east
                if (cell.e == true) {
                    removeSprite(cellCoords);
                    cellCoords = {
                        x: cellCoords.x + 1,
                        y: cellCoords.y
                    };
                    drawSprite(cellCoords);
                }
                break;
            case 83:
            case 40: // south
                if (cell.s == true) {
                    removeSprite(cellCoords);
                    cellCoords = {
                        x: cellCoords.x,
                        y: cellCoords.y + 1
                    };
                    drawSprite(cellCoords);
                }
                break;
        }
    }

    this.bindKeyDown = function () {
        window.addEventListener("keydown", check, false);