/* draw the map on canvas */
    Draw.init();
    Draw.canvasdraw(document.getElementById("Canvas1"));

    /* draws the player on start location */
    Draw.drawmove(document.getElementById("Canvas1"),agent.currPos.x,agent.currPos.y)

    var game = setInterval(gameLoop, 1000);
    /* create a new agent */
    function gameLoop(){
        if(steps > MAX_STEPS) {
            console.log("--------------------------------------");
            console.log("I couldn't find the gold :(");
            console.log("--------------------------------------");
            clearInterval(game);
        }

        /* move */
        agent.move();
        Draw.drawmove(document.getElementById("Canvas1"),"forward",agent.currPos.x,agent.currPos.y);
        Map.gatherAdjacentInfo(agent);

        /* see if the agent is still alive */
        if(Map.tiles[agent.currPos.x][agent.currPos.y].hasPit) {
            console.log("--------------------------------------");
            console.log("Aaaahhhh!");
            console.log("--------------------------------------");
            clearInterval(game);
        }

        if(Map.tiles[agent.currPos.x][agent.currPos.y].hasWumpus) {
            console.log("--------------------------------");
            console.log("Noo! The agent has been eaten by the Wumpus!");
            console.log("--------------------------------------");
            clearInterval(game);
        }
        /*-----------------------------------*/
        steps++;

        /* going back to the start */
        if(agent.hasGold) {
            console.log("--------------------------------------");
            console.log("Going back to the start...");
            console.log("--------------------------------------");

            while(SearchTree.closedList.length > 0) {
                if(agent.currPos.x == 3 && agent.currPos.y == 0) break;
                else {
                    agent.goBack();
                    Draw.drawmove(document.getElementById("Canvas1"),"backward",agent.currPos.x,agent.currPos.y);
                }
            }

            console.log("--------------------------------------");
            console.log("Woohoo!! I am rich!!");
            console.log("--------------------------------------");
            clearInterval(game);
        }
    }