var scene, camera, renderer, mesh;
var meshFloor, ambientLight, light;

var crate, crateTexture, crateNormalMap, crateBumpMap;

var keyboard = {};
var player = { height:1.8, speed:0.2, turnSpeed:Math.PI*0.02 };
var USE_WIREFRAME = false;

function init(){
	scene = new THREE.Scene();
	camera = new THREE.PerspectiveCamera(90, 1280/720, 0.1, 1000);

	mesh = new THREE.Mesh(
		new THREE.BoxGeometry(1,1,1),
		new THREE.MeshPhongMaterial({color:0xff4444, wireframe:USE_WIREFRAME})
	);
	mesh.position.y += 1;
	mesh.receiveShadow = true;
	mesh.castShadow = true;
	scene.add(mesh);

	meshFloor = new THREE.Mesh(
		new THREE.PlaneGeometry(20,20, 10,10),
		new THREE.MeshPhongMaterial({color:0xffffff, wireframe:USE_WIREFRAME})
	);
	meshFloor.rotation.x -= Math.PI / 2;
	meshFloor.receiveShadow = true;
	scene.add(meshFloor);

	ambientLight = new THREE.AmbientLight(0xffffff, 0.2);
	scene.add(ambientLight);

	light = new THREE.PointLight(0xffffff, 0.8, 18);
	light.position.set(-3,6,-3);
	light.castShadow = true;
	light.shadow.camera.near = 0.1;
	light.shadow.camera.far = 25;
	scene.add(light);


	var textureLoader = new THREE.TextureLoader();
	crateTexture = textureLoader.load("crate0/crate0_diffuse.jpg");
	crateBumpMap = textureLoader.load("crate0/crate0_bump.jpg");
	crateNormalMap = textureLoader.load("crate0/crate0_normal.jpg");

	crate = new THREE.Mesh(
		new THREE.BoxGeometry(3,3,3),
		new THREE.MeshPhongMaterial({
			color:0xffffff,
			map:crateTexture,
			bumpMap:crateBumpMap,
			normalMap:crateNormalMap
		})
	);
	scene.add(crate);
	crate.position.set(2.5, 3/2, 2.5);
	crate.receiveShadow = true;
	crate.castShadow = true;

	// Model/material loading!
	var mtlLoader = new THREE.MTLLoader();
	mtlLoader.load("models/Tent_Poles_01.mtl", function(materials){

		materials.preload();
		var objLoader = new THREE.OBJLoader();
		objLoader.setMaterials(materials);

		objLoader.load("models/Tent_Poles_01.obj", function(mesh){

			mesh.traverse(function(node){
				if( node instanceof THREE.Mesh ){
					node.castShadow = true;
					node.receiveShadow = true;
				}
			});

			scene.add(mesh);
			mesh.position.set(-5, 0, 4);
			mesh.rotation.y = -Math.PI/4;
		});

	});


	camera.position.set(0, player.height, -5);
	camera.lookAt(new THREE.Vector3(0,player.height,0));

	renderer = new THREE.WebGLRenderer();
	renderer.setSize(1280, 720);

	renderer.shadowMap.enabled = true;
	renderer.shadowMap.type = THREE.BasicShadowMap;

	document.body.appendChild(renderer.domElement);

	animate();
}

function animate(){
	requestAnimationFrame(animate);

	mesh.rotation.x += 0.01;
	mesh.rotation.y += 0.02;
	crate.rotation.y += 0.01;

	if(keyboard[87]){ // W key
		camera.position.x -= Math.sin(camera.rotation.y) * player.speed;
		camera.position.z -= -Math.cos(camera.rotation.y) * player.speed;
	}
	if(keyboard[83]){ // S key
		camera.position.x += Math.sin(camera.rotation.y) * player.speed;
		camera.position.z += -Math.cos(camera.rotation.y) * player.speed;
	}
	if(keyboard[65]){ // A key
		camera.position.x += Math.sin(camera.rotation.y + Math.PI/2) * player.speed;
		camera.position.z += -Math.cos(camera.rotation.y + Math.PI/2) * player.speed;
	}
	if(keyboard[68]){ // D key
		camera.position.x += Math.sin(camera.rotation.y - Math.PI/2) * player.speed;
		camera.position.z += -Math.cos(camera.rotation.y - Math.PI/2) * player.speed;
	}

	if(keyboard[37]){ // left arrow key
		camera.rotation.y -= player.turnSpeed;
	}
	if(keyboard[39]){ // right arrow key
		camera.rotation.y += player.turnSpeed;
	}

	renderer.render(scene, camera);
}

window.onload = init;