// awesome goblin game

// Create the canvas
var canvas = document.createElement("canvas");
var ctx = canvas.getContext("2d");
canvas.width = 512;
canvas.height = 480;
document.body.appendChild(canvas);

// Background image
var bgReady = false;
var bgImage = new Image();
bgImage.onload = function () {
    bgReady = true;
};
bgImage.src = "images/background.png";

// Hero image
var heroReady = false;
var heroImage = new Image();
heroImage.onload = function () {
    heroReady = true;
};
heroImage.src = "images/hero.png";

// Monster image
var monsterReady = false;
var monsterImage = new Image();
monsterImage.onload = function () {
    monsterReady = true;
};
monsterImage.src = "images/monster.png";

// Game objects
var hero = {
    speed: 256, // movement in pixels per second
    x: 0,
    y: 0
};
var monster = {
    speed: 256,
    x: 0,
    y: 0
};
var monstersCaught = 0;
var delta = 0;
var directionMonster = 0;
var goThisWay = 1;
// Handle keyboard controls
var keysDown = {};

addEventListener("keydown", function (e) {
    keysDown[e.keyCode] = true;
}, false);

addEventListener("keyup", function (e) {
    delete keysDown[e.keyCode];
}, false);

// Reset the game when the player catches a monster
var reset = function () {
    hero.x = canvas.width / 2;
    hero.y = canvas.height / 2;

    // Throw the monster somewhere on the screen randomly
    monster.x = 32 + (Math.random() * (canvas.width - 64));
    monster.y = 32 + (Math.random() * (canvas.height - 64));
};
// Update game objects
var update = function (modifier) {
    if (38 in keysDown) { // Player holding up
        hero.y -= hero.speed * modifier;
    }
    if (40 in keysDown) { // Player holding down
        hero.y += hero.speed * modifier;
    }
    if (37 in keysDown) { // Player holding left
        hero.x -= hero.speed * modifier;
    }
    if (39 in keysDown) { // Player holding right
        hero.x += hero.speed * modifier;
    }

    // Are they touching?
    if (
        hero.x <= (monster.x + 32)
        && monster.x <= (hero.x + 32)
        && hero.y <= (monster.y + 32)
        && monster.y <= (hero.y + 32)
    ) {
        ++monstersCaught;
        reset();
    }
};
//make our monster move :)
var monsterMove = function (modifier){



    ++directionMonster;

    if (directionMonster <= 200){
        //bewegingen
        //rechts => links
    if (goThisWay == 1) {
        monster.x = monster.x - (monster.speed * modifier);
    if (monster.x <= -32){
        goThisWay = 2;
    }
    }
    //links => rechts
    if (goThisWay == 2) {
        monster.x = monster.x + (monster.speed * modifier);
    if (monster.x >= 512){
        goThisWay=1;
    }
    }
    //boven => onderen
    if (goThisWay == 3) {
        monster.y = monster.y + (monster.speed * modifier);
    if (monster.y >= 480){
        goThisWay=4;

    }
    }
    //onderen => boven
    if (goThisWay == 4) {
        monster.y = monster.y - (monster.speed * modifier);
    if (monster.y <= -32){
        goThisWay=3;

    }
    }
    //bepalen welke richting
    if (directionMonster ==200){
        directionMonster = 0;
        goThisWay = Math.floor((Math.random() * 4) + 1);
        console.log (goThisWay);
    }
    }
    };
// Draw everything
var render = function () {
    if (bgReady) {
        ctx.drawImage(bgImage, 0, 0);
    }

    if (heroReady) {
        ctx.drawImage(heroImage, hero.x, hero.y);
    }

    if (monsterReady) {
        ctx.drawImage(monsterImage, monster.x, monster.y);
    }

    // Score
    ctx.fillStyle = "rgb(250, 250, 250)";
    ctx.font = "24px Helvetica";
    ctx.textAlign = "left";
    ctx.textBaseline = "top";
    ctx.fillText("Monsterrs caught: " + monstersCaught, 32, 32);
};
// The main game loop
var main = function () {
    var now = Date.now();
    delta = now - then;

    update(delta / 1000);
        render();
monsterMove(delta / 1000);

    then = now;

    // Request to do this again ASAP
    requestAnimationFrame(main);
};

// Cross-browser support for requestAnimationFrame
var w = window;
requestAnimationFrame = w.requestAnimationFrame || w.webkitRequestAnimationFrame || w.msRequestAnimationFrame || w.mozRequestAnimationFrame;

// Let's play this game!
var then = Date.now();
reset();
main();