physics_collisionmesh.ts

/*{# Copyright (c) 2011-2012 Turbulenz Limited #}*/

/*
 * @title: 3D Physics collision meshes
 * @description:
 * This sample shows how to create rigid body physics nodes with each of the collision mesh types (boxes, spheres,
 * cones, cylinders, capsules and convex hulls) and a static triangle mesh.
 *
 * Rigid body cubes with an initial velocity can be fired into the scene from first person perspective by pressing
 * space. Click on the rendering window to move and rotate the camera around.
*/

/*{{ javascript("jslib/aabbtree.js") }}*/
/*{{ javascript("jslib/camera.js") }}*/
/*{{ javascript("jslib/floor.js") }}*/
/*{{ javascript("jslib/geometry.js") }}*/
/*{{ javascript("jslib/material.js") }}*/
/*{{ javascript("jslib/light.js") }}*/
/*{{ javascript("jslib/scenenode.js") }}*/
/*{{ javascript("jslib/scene.js") }}*/
/*{{ javascript("jslib/vmath.js") }}*/
/*{{ javascript("jslib/effectmanager.js") }}*/
/*{{ javascript("jslib/shadermanager.js") }}*/
/*{{ javascript("jslib/texturemanager.js") }}*/
/*{{ javascript("jslib/renderingcommon.js") }}*/
/*{{ javascript("jslib/defaultrendering.js") }}*/
/*{{ javascript("jslib/resourceloader.js") }}*/
/*{{ javascript("jslib/scenedebugging.js") }}*/
/*{{ javascript("jslib/observer.js") }}*/
/*{{ javascript("jslib/physicsmanager.js") }}*/
/*{{ javascript("jslib/utilities.js") }}*/
/*{{ javascript("jslib/vertexbuffermanager.js") }}*/
/*{{ javascript("jslib/indexbuffermanager.js") }}*/
/*{{ javascript("jslib/mouseforces.js") }}*/

/*{{ javascript("jslib/utilities.js") }}*/
/*{{ javascript("jslib/requesthandler.js") }}*/
/*{{ javascript("jslib/services/turbulenzservices.js") }}*/
/*{{ javascript("jslib/services/turbulenzbridge.js") }}*/
/*{{ javascript("jslib/services/gamesession.js") }}*/
/*{{ javascript("jslib/services/mappingtable.js") }}*/

/*{{ javascript("scripts/htmlcontrols.js") }}*/
/*{{ javascript("scripts/sceneloader.js") }}*/

/*global TurbulenzEngine: true */
/*global DefaultRendering: false */
/*global RequestHandler: false */
/*global SceneLoader: false */
/*global SceneNode: false */
/*global TurbulenzServices: false */
/*global TextureManager: false */
/*global ShaderManager: false */
/*global EffectManager: false */
/*global Scene: false */
/*global Camera: false */
/*global CameraController: false */
/*global Floor: false */
/*global MouseForces: false */
/*global PhysicsManager: false */
/*global HTMLControls: false */

TurbulenzEngine.onload = function onloadFn()
{
    var errorCallback = function errorCallback(msg)
    {
        window.alert(msg);
    };
    TurbulenzEngine.onerror = errorCallback;

    var warningCallback = function warningCallback(msg)
    {
        window.alert(msg);
    };
    TurbulenzEngine.onwarning = warningCallback;

    var mathDeviceParameters = { };
    var mathDevice = TurbulenzEngine.createMathDevice(mathDeviceParameters);

    var graphicsDeviceParameters = { };
    var graphicsDevice = TurbulenzEngine.createGraphicsDevice(graphicsDeviceParameters);

    var physicsDeviceParameters = { };
    var physicsDevice = TurbulenzEngine.createPhysicsDevice(physicsDeviceParameters);

    var dynamicsWorldParameters = { };
    var dynamicsWorld = physicsDevice.createDynamicsWorld(dynamicsWorldParameters);

    var inputDeviceParameters = { };
    var inputDevice = TurbulenzEngine.createInputDevice(inputDeviceParameters);

    var requestHandlerParameters = {};
    var requestHandler = RequestHandler.create(requestHandlerParameters);

    var textureManager = TextureManager.create(graphicsDevice, requestHandler, null, errorCallback);
    var shaderManager = ShaderManager.create(graphicsDevice, requestHandler, null, errorCallback);
    var effectManager = EffectManager.create();
    var physicsManager = PhysicsManager.create(mathDevice, physicsDevice, dynamicsWorld);

    var mappingTable;
    var debugMode = true;

    // Renderer and assets for the scene.
    var renderer;
    var scene = Scene.create(mathDevice);
    var sceneLoader = SceneLoader.create();
    var duckMesh;

    // Setup world space
    var clearColor = mathDevice.v4Build(0.95, 0.95, 1.0, 1.0);
    var loadingClearColor = mathDevice.v4Build(0.8, 0.8, 0.8, 1.0);
    var worldUp = mathDevice.v3BuildYAxis();

    // Setup a camera to view a close-up object
    var camera = Camera.create(mathDevice);
    camera.nearPlane = 0.05;
    var cameraDefaultPos = mathDevice.v3Build(14.5, 8.0, 18.1);
    var cameraDefaultLook = mathDevice.v3Build(14.5, -(camera.farPlane / 2), -camera.farPlane);

    // The objects needed to draw the crosshair
    var technique2d;
    var shader2d;
    var techniqueParameters2d;
    var chSemantics = graphicsDevice.createSemantics(['POSITION']);
    var chFormats = [graphicsDevice.VERTEXFORMAT_FLOAT3];

    // The objects needed to draw the contact callbacks
    var contactsTechnique;
    var contactsShader;
    var contactsTechniqueParameters;
    var contactsSemantics = graphicsDevice.createSemantics(['POSITION']);
    var contactsFormats = [graphicsDevice.VERTEXFORMAT_FLOAT3];
    var contactWorldTransform = mathDevice.m43BuildIdentity();
    var contactWorldPoint = mathDevice.v3BuildZero();
    var contacts = [];
    var numContacts = 0;

    // Setup world floor
    var floor = Floor.create(graphicsDevice, mathDevice);
    var cameraController = CameraController.create(graphicsDevice, inputDevice, camera);

    // Mouse forces
    var dragMin = mathDevice.v3Build(-50, -50, -50);
    var dragMax = mathDevice.v3Build(50, 50, 50);
    var mouseForces = MouseForces.create(graphicsDevice, inputDevice, mathDevice,
                                         physicsDevice, dragMin, dragMax);
    mouseForces.clamp = 400;

    // Control codes
    var keyCodes = inputDevice.keyCodes;
    var mouseCodes = inputDevice.mouseCodes;

    // Setup the box firing objects, including the inertia
    var boxes = [];
    var numBoxes = 12;
    var fireCount = 0;
    var cubeExtents = mathDevice.v3Build(0.5, 0.5, 0.5);
    var boxShape = physicsDevice.createBoxShape({
            halfExtents : cubeExtents,
            margin : 0.001
        });

    var inertia = mathDevice.v3Copy(boxShape.inertia);
    inertia = mathDevice.v3ScalarMul(inertia, 1.0);

    function reset()
    {
        var halfPI = Math.PI / 2;
        var halfExtents = duckMesh.localHalfExtents;
        var yhalfExtent = halfExtents[1];
        var j = 1;

        function resetTransform(node, rotationMatrix?)
        {
            var body = node.physicsNodes[0].body;
            dynamicsWorld.removeRigidBody(body);
            body.transform = mathDevice.m43BuildTranslation(j * 5, yhalfExtent, 0, body.transform);
            if (rotationMatrix)
            {
                body.transform = mathDevice.m43Mul(rotationMatrix, body.transform, body.transform);
            }
            body.linearVelocity = mathDevice.v3BuildZero();
            body.angularVelocity = mathDevice.v3BuildZero();
            body.active = true;
            dynamicsWorld.addRigidBody(body);
            j += 1;
        };

        // Reset ducks
        var rootNode = scene.findNode("DuckBoxPhys");
        resetTransform(rootNode);
        rootNode = scene.findNode("DuckConePhys");
        resetTransform(rootNode);
        rootNode = scene.findNode("DuckCylinderPhys");
        resetTransform(rootNode);
        rootNode = scene.findNode("DuckSpherePhys");
        resetTransform(rootNode);
        rootNode = scene.findNode("DuckCapsulePhys");
        var rot = mathDevice.m43FromAxisRotation(mathDevice.v3BuildXAxis(), halfPI);
        mathDevice.m43SetAxisRotation(rot, mathDevice.v3BuildZAxis(), halfPI);
        resetTransform(rootNode, rot);
        rootNode = scene.findNode("DuckConvexHullPhys");
        resetTransform(rootNode);

        // Reset boxes
        var count = 0;
        if (fireCount > 0 && fireCount < numBoxes)
        {
            count = fireCount;
        }
        else if (fireCount >= numBoxes)
        {
            count = numBoxes;
        }

        for (var i = 0; i < count; i += 1)
        {
            var box = boxes[i];
            var node = box.target;
            physicsManager.deletePhysicsNode(box);
            physicsManager.enableNode(node, false);
        }
        fireCount = 0;

        // Reset camera
        camera.lookAt(cameraDefaultLook, worldUp, cameraDefaultPos);
        camera.updateViewMatrix();
    }

    function fireBox()
    {
        mouseForces.mouseX = 0.5;
        mouseForces.mouseY = 0.5;
        mouseForces.mouseZ = 0.0;
        mouseForces.generatePickRay(camera.matrix,
                                    1.0 / camera.recipViewWindowX,
                                    1.0 / camera.recipViewWindowY,
                                    camera.aspectRatio,
                                    camera.farPlane);

        var tr = mathDevice.m43BuildTranslation(mouseForces.pickRayFrom[0], mouseForces.pickRayFrom[1], mouseForces.pickRayFrom[2]);

        var linVel = mathDevice.v3Build(mouseForces.pickRayTo[0] - mouseForces.pickRayFrom[0],
                                        mouseForces.pickRayTo[1] - mouseForces.pickRayFrom[1],
                                        mouseForces.pickRayTo[2] - mouseForces.pickRayFrom[2]);
        mathDevice.v3Normalize(linVel, linVel);
        mathDevice.v3ScalarMul(linVel, 50.0, linVel);

        var box = boxes[fireCount % numBoxes];
        physicsManager.deletePhysicsNode(box);
        var node = box.target;
        var body = box.body;
        if (fireCount > numBoxes - 1)
        {
            physicsManager.enableNode(node, false);
        }
        body.transform = tr;
        body.angularVelocity = mathDevice.v3BuildZero();
        body.linearVelocity = linVel;
        body.active = true;

        physicsManager.physicsNodes.push(box);
        physicsManager.dynamicPhysicsNodes.push(box);
        physicsManager.enableNode(node, true);

        fireCount += 1;
    }

    var onMouseDown = function (button)
    {
        if (mouseCodes.BUTTON_0 === button || mouseCodes.BUTTON_1 === button)
        {
            mouseForces.onmousedown();
        }
    };

    var onMouseUp = function (button)
    {
        if (mouseCodes.BUTTON_0 === button || mouseCodes.BUTTON_1 === button)
        {
            mouseForces.onmouseup();
        }
        if (mouseCodes.BUTTON_2 === button)
        {
            mouseForces.onmouseup();
            fireBox();
        }
    };

    var onKeyUp = function physicsOnkeyupFn(keynum)
    {
        if (keynum === keyCodes.R) // 'r' key
        {
            reset();
        }
        if (keynum === keyCodes.SPACE) // Spacebar
        {
            fireBox();
        }
        else
        {
            cameraController.onkeyup(keynum);
        }
    };

    // Add event listeners
    inputDevice.addEventListener("keyup", onKeyUp);
    inputDevice.addEventListener("mousedown", onMouseDown);
    inputDevice.addEventListener("mouseup", onMouseUp);

    // Controls
    var htmlControls = HTMLControls.create();
    htmlControls.addCheckboxControl({
        id: "checkbox01",
        value: "debugMode",
        isSelected: debugMode,
        fn: function ()
        {
            debugMode = !debugMode;
            duckMesh.setDisabled(debugMode);
            return debugMode;
        }
    });
    htmlControls.register();

    function drawCrosshair()
    {
        if (!mouseForces.pickedBody)
        {
            graphicsDevice.setTechnique(technique2d);

            var screenWidth = graphicsDevice.width;
            var screenHeight = graphicsDevice.height;
            techniqueParameters2d.clipSpace = mathDevice.v4Build(2.0 / screenWidth, -2.0 / screenHeight, -1.0, 1.0);
            graphicsDevice.setTechniqueParameters(techniqueParameters2d);

            var writer = graphicsDevice.beginDraw(
                graphicsDevice.PRIMITIVE_LINES, 4, chFormats, chSemantics);

            if (writer)
            {
                var halfWidth = screenWidth * 0.5;
                var halfHeight = screenHeight * 0.5;
                writer([halfWidth - 10, halfHeight]);
                writer([halfWidth + 10, halfHeight]);
                writer([halfWidth, halfHeight - 10]);
                writer([halfWidth, halfHeight + 10]);

                graphicsDevice.endDraw(writer);
            }
        }
    }

    //function addContact(objectA, objectB, pairContact)
    //{
    //    if (debugMode)
    //    {
    //        objectB.calculateTransform(contactWorldTransform);
    //        mathDevice.m43TransformPoint(contactWorldTransform, pairContact.localPointOnB, contactWorldPoint);
    //        var contactNormal = pairContact.worldNormalOnB;
    //        if (numContacts >= contacts.length)
    //        {
    //            contacts[contacts.length] = new Float32Array(6);
    //        }
    //        var contact = contacts[numContacts];
    //        contact[0] = contactWorldPoint[0];
    //        contact[1] = contactWorldPoint[1];
    //        contact[2] = contactWorldPoint[2];
    //        contact[3] = contactWorldPoint[0] - contactNormal[0];
    //        contact[4] = contactWorldPoint[1] - contactNormal[1];
    //        contact[5] = contactWorldPoint[2] - contactNormal[2];
    //        numContacts += 1;
    //    }
    //}

    function addContacts(objectA, objectB, pairContacts)
    {
        if (debugMode)
        {
            var numPairContacts = pairContacts.length;
            var n;
            objectB.calculateTransform(contactWorldTransform);
            for (n = 0; n < numPairContacts; n += 1)
            {
                var pairContact = pairContacts[n];
                mathDevice.m43TransformPoint(contactWorldTransform, pairContact.localPointOnB, contactWorldPoint);
                var contactNormal = pairContact.worldNormalOnB;
                if (numContacts >= contacts.length)
                {
                    contacts[contacts.length] = new Float32Array(6);
                }
                var contact = contacts[numContacts];
                contact[0] = contactWorldPoint[0];
                contact[1] = contactWorldPoint[1];
                contact[2] = contactWorldPoint[2];
                contact[3] = contactWorldPoint[0] - contactNormal[0];
                contact[4] = contactWorldPoint[1] - contactNormal[1];
                contact[5] = contactWorldPoint[2] - contactNormal[2];
                numContacts += 1;
            }
        }
    }

    function drawContacts()
    {
        if (numContacts)
        {
            graphicsDevice.setTechnique(contactsTechnique);

            contactsTechniqueParameters.worldViewProjection = camera.viewProjectionMatrix;
            graphicsDevice.setTechniqueParameters(contactsTechniqueParameters);

            var writer = graphicsDevice.beginDraw(
                graphicsDevice.PRIMITIVE_LINES, numContacts * 2, contactsFormats, contactsSemantics);

            if (writer)
            {
                var n;
                for (n = 0; n < numContacts; n += 1)
                {
                    var contact = contacts[n];
                    writer(contact[0], contact[1], contact[2]);
                    writer(contact[3], contact[4], contact[5]);
                }

                graphicsDevice.endDraw(writer);
            }
        }
    }


    var renderFrame = function renderFrameFn()
    {
        var currentTime = TurbulenzEngine.time;

        // Update input and camera
        inputDevice.update();

        if (mouseForces.pickedBody)
        {
            // If we're dragging a body don't apply the movement to the camera
            cameraController.pitch = 0;
            cameraController.turn = 0;
            cameraController.step = 0;
        }

        cameraController.update();

        var deviceWidth = graphicsDevice.width;
        var deviceHeight = graphicsDevice.height;
        var aspectRatio = (deviceWidth / deviceHeight);
        if (aspectRatio !== camera.aspectRatio)
        {
            camera.aspectRatio = aspectRatio;
            camera.updateProjectionMatrix();
        }
        camera.updateViewProjectionMatrix();

        numContacts = 0;

        // Update the physics
        mouseForces.update(dynamicsWorld, camera, 0.1);
        dynamicsWorld.update();

        physicsManager.update();
        scene.update();

        renderer.update(graphicsDevice, camera, scene, currentTime);

        if (graphicsDevice.beginFrame())
        {
            if (renderer.updateBuffers(graphicsDevice, deviceWidth, deviceHeight))
            {
                renderer.draw(graphicsDevice, clearColor);
                floor.render(graphicsDevice, camera);
                if (debugMode)
                {
                    scene.drawPhysicsNodes(graphicsDevice, shaderManager, camera, physicsManager);
                    scene.drawPhysicsGeometry(graphicsDevice, shaderManager, camera, physicsManager);
                    drawContacts();
                }
            }

            drawCrosshair();

            graphicsDevice.endFrame();
        }
    };

    var intervalID;
    var loadingLoop = function loadingLoopFn()
    {
        if (graphicsDevice.beginFrame())
        {
            graphicsDevice.clear(loadingClearColor);
            graphicsDevice.endFrame();
        }

        if (sceneLoader.complete())
        {
            TurbulenzEngine.clearInterval(intervalID);

            camera.lookAt(cameraDefaultLook, worldUp, cameraDefaultPos);
            camera.updateViewMatrix();

            renderer.updateShader(shaderManager);

            shader2d = shaderManager.get("shaders/generic2D.cgfx");
            technique2d = shader2d.getTechnique("constantColor2D");
            techniqueParameters2d = graphicsDevice.createTechniqueParameters({
                    clipSpace : null,
                    constantColor : mathDevice.v4Build(0, 0, 0, 1)
                });

            contactsShader = shaderManager.get("shaders/debug.cgfx");
            contactsTechnique = contactsShader.getTechnique("debug_lines_constant");
            contactsTechniqueParameters = graphicsDevice.createTechniqueParameters({
                    worldViewProjection : null,
                    constantColor : mathDevice.v4Build(1, 0, 0, 1)
                });

            // Floor physics
            if (physicsManager.physicsNodes.length >= 0)
            {
                // Floor is represented by a plane shape
                var floorShape = physicsDevice.createPlaneShape({
                        normal : mathDevice.v3Build(0, 1, 0),
                        distance : 0,
                        margin : 0.001
                    });

                var floorObject = physicsDevice.createCollisionObject({
                        shape : floorShape,
                        transform : mathDevice.m43BuildIdentity(),
                        friction : 0.8,
                        restitution : 0.1,
                        group: physicsDevice.FILTER_STATIC,
                        mask: physicsDevice.FILTER_ALL,
                        //onPreSolveContact : addContact,
                        //onAddedContacts : addContacts
                        onProcessedContacts : addContacts
                        //onRemovedContacts : addContacts
                    });

                // Adds the floor collision object to the world
                dynamicsWorld.addCollisionObject(floorObject);
            }
            intervalID = TurbulenzEngine.setInterval(renderFrame, 1000 / 60);
        }
    };
    intervalID = TurbulenzEngine.setInterval(loadingLoop, 1000 / 10);
    // Change the clear color before we start loading assets
    loadingLoop();

    var postLoad = function postLoadFn()
    {
        var mass = 10.0;
        var margin = 0.001;
        duckMesh = scene.findNode("DuckMesh");
        var halfExtents = duckMesh.localHalfExtents;
        var xhalfExtent = halfExtents[0];
        var yhalfExtent = halfExtents[1];
        var halfPI = Math.PI / 2;
        var xAxis = mathDevice.v3BuildXAxis();
        var zAxis = mathDevice.v3BuildZAxis();

        function newPhysicsNode(name, shape, offsetTransform, pos)
        {
            var duckGeom = duckMesh.clone(name + "Geom");
            physicsManager.deletePhysicsNode(duckGeom.physicsNodes[0]);
            duckGeom.physicsNodes = [];
            duckGeom.setLocalTransform(offsetTransform);

            var duckPhys = SceneNode.create({
                    name: name + "Phys",
                    local: pos,
                    dynamic: true,
                    disabled: false
                });

            var rigidBody = physicsDevice.createRigidBody({
                shape : shape,
                mass : mass,
                inertia : mathDevice.v3ScalarMul(shape.inertia, mass),
                transform : pos,
                friction : 0.7,
                restitution : 0.2,
                angularDamping : 0.4
            });

            var physicsNode = {
                body : rigidBody,
                target : duckPhys,
                dynamic : true
            };

            scene.addRootNode(duckPhys);
            duckPhys.addChild(duckGeom);
            duckPhys.physicsNodes = [physicsNode];
            duckPhys.setDynamic();

            physicsManager.physicsNodes.push(physicsNode);
            physicsManager.dynamicPhysicsNodes.push(physicsNode);
            physicsManager.enableHierarchy(duckPhys, true);
        }

        // Build a box duck
        var shape = physicsDevice.createBoxShape({
                halfExtents : halfExtents,
                margin : margin
            });

        var position = mathDevice.m43BuildTranslation(5, yhalfExtent, 0);
        newPhysicsNode("DuckBox", shape, mathDevice.m43BuildIdentity(), position);

        // Build a cone duck
        shape = physicsDevice.createConeShape({
                height : yhalfExtent * 2,
                radius : xhalfExtent,
                margin : margin
            });

        mathDevice.m43BuildTranslation(10, yhalfExtent, 0, position);
        newPhysicsNode("DuckCone", shape, mathDevice.m43BuildIdentity(), position);

        // Build a cylinder duck
        shape = physicsDevice.createCylinderShape({
                halfExtents : [xhalfExtent, yhalfExtent, xhalfExtent],
                margin : margin
            });

        mathDevice.m43BuildTranslation(15, yhalfExtent, 0, position);
        newPhysicsNode("DuckCylinder", shape, mathDevice.m43BuildIdentity(), position);

        // Build a sphere duck
        shape = physicsDevice.createSphereShape({
                radius : xhalfExtent,
                margin : margin
            });

        mathDevice.m43BuildTranslation(20, yhalfExtent, 0, position);
        newPhysicsNode("DuckSphere", shape, mathDevice.m43BuildIdentity(), position);

        // Build a capsule duck
        shape = physicsDevice.createCapsuleShape({
                radius : xhalfExtent,
                height : yhalfExtent * 2,
                margin : margin
            });

        // Capsules always take their height in the Y-axis
        // Rotate the capsule so it is flat against the floor
        // Rotate the duck so it is facing the correct direction
        mathDevice.m43BuildTranslation(25, yhalfExtent, 0, position);
        mathDevice.m43SetAxisRotation(position, xAxis, halfPI);
        mathDevice.m43SetAxisRotation(position, zAxis, halfPI);
        newPhysicsNode("DuckCapsule", shape, mathDevice.m43FromAxisRotation(zAxis, -halfPI), position);

        // Build a convex hull duck
        shape = physicsDevice.createConvexHullShape({
                points    : duckMesh.physicsNodes[0].triangleArray.vertices,
                margin    : margin,
                minExtent : mathDevice.v3Neg(halfExtents),
                maxExtent : halfExtents
            });

        mathDevice.m43BuildTranslation(30, yhalfExtent, 0, position);
        newPhysicsNode("DuckConvexHull", shape, mathDevice.m43BuildIdentity(), position);

        // Set DuckMesh to disabled when debug rendering is enabled
        // This is to prevent Z-fighting between the geometry of the triangle mesh and asset
        duckMesh.setDisabled(true);

        // Create a pool of boxes
        var identity = mathDevice.m43BuildIdentity();
        for (var i = 0; i < numBoxes; i += 1)
        {
            var box = physicsDevice.createRigidBody({
                shape : boxShape,
                mass : 1.0,
                inertia : boxShape.inertia,
                transform : identity,
                friction : 0.9,
                restitution : 0.1
            });

            var newBox = SceneNode.create({
                name: "box" + i,
                local: identity,
                dynamic: true,
                disabled: false
            });
            var physicsNode = {
                body : box,
                target : newBox,
                dynamic : true
            };
            newBox.physicsNodes = [physicsNode];
            scene.addRootNode(newBox);
            boxes[i] = physicsNode;
        }
    };

    var loadAssets = function loadAssetsFn()
    {
        // Renderer for the scene.
        renderer = DefaultRendering.create(graphicsDevice,
                                       mathDevice,
                                       shaderManager,
                                       effectManager);

        renderer.setGlobalLightPosition(mathDevice.v3Build(0.5, 100.0, 0.5));
        renderer.setAmbientColor(mathDevice.v3Build(0.3, 0.3, 0.4));

        shaderManager.load("shaders/generic2D.cgfx");

        // Load mesh duck
        sceneLoader.load({
            scene : scene,
            assetPath : "models/duck_trianglemesh.dae",
            graphicsDevice : graphicsDevice,
            textureManager : textureManager,
            effectManager : effectManager,
            shaderManager : shaderManager,
            physicsManager : physicsManager,
            requestHandler : requestHandler,
            baseMatrix : mathDevice.m43BuildTranslation(0, 0.77, 0),
            append : true,
            postSceneLoadFn : postLoad,
            dynamic : false
        });
    };

    var mappingTableReceived = function mappingTableReceivedFn(mappingTable)
    {
        textureManager.setPathRemapping(mappingTable.urlMapping, mappingTable.assetPrefix);
        shaderManager.setPathRemapping(mappingTable.urlMapping, mappingTable.assetPrefix);
        sceneLoader.setPathRemapping(mappingTable.urlMapping, mappingTable.assetPrefix);

        loadAssets();
    };

    var gameSessionCreated = function gameSessionCreatedFn(gameSession)
    {
        mappingTable = TurbulenzServices.createMappingTable(requestHandler,
                                                            gameSession,
                                                            mappingTableReceived);
    };

    var gameSession = TurbulenzServices.createGameSession(requestHandler, gameSessionCreated);

    // Create a scene destroy callback to run when the window is closed
    function destroyScene()
    {
        gameSession.destroy();

        TurbulenzEngine.clearInterval(intervalID);
        clearColor = null;

        if (scene)
        {
            scene.destroy();
            scene = null;
        }
        requestHandler = null;

        if (renderer)
        {
            renderer.destroy();
            renderer = null;
        }

        camera = null;

        if (textureManager)
        {
            textureManager.destroy();
            textureManager = null;
        }

        if (shaderManager)
        {
            shaderManager.destroy();
            shaderManager = null;
        }

        effectManager = null;

        TurbulenzEngine.flush();
        graphicsDevice = null;
        mathDevice = null;
        physicsDevice = null;
        physicsManager = null;
        dynamicsWorld = null;
        mouseCodes = null;
        keyCodes = null;
        inputDevice = null;
        cameraController = null;
        floor = null;
    }

    TurbulenzEngine.onunload = destroyScene;

};