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sampleappmain.js
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sampleappmain.js
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// Copyright (c) 2010-2012 Turbulenz Limited
/*global TurbulenzEngine: false */
/*global Motion: false */
/*global TurbulenzBridge: false */
/*global RequestHandler: false */
/*global TextureManager: false */
/*global ShaderManager: false */
/*global EffectManager: false */
/*global Scene: false */
/*global SceneLoader: false */
/*global Camera: false */
/*global DefaultRendering: false */
/*global TurbulenzServices: 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;
// Put the plugin version onto the page
var versionElem = document.getElementById("engine_version");
if (versionElem)
{
versionElem.innerHTML = TurbulenzEngine.version;
}
TurbulenzBridge.startLoading();
var mathDeviceParameters = {};
var mathDevice = TurbulenzEngine.createMathDevice(mathDeviceParameters);
var graphicsDeviceParameters = {};
var graphicsDevice = TurbulenzEngine.createGraphicsDevice(graphicsDeviceParameters);
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();
// Renderer and assets for the scene.
var renderer;
var scene = Scene.create(mathDevice);
var sceneLoader = SceneLoader.create();
// Setup world space
var clearColor = [0.5, 0.5, 0.5, 1.0];
var worldUp = mathDevice.v3BuildYAxis();
// Setup a camera to view a close-up object
var camera = Camera.create(mathDevice);
var cameraDistanceFactor = 1.0;
camera.nearPlane = 0.05;
// The name of the node we want to rotate
var nodeName = "LOD3sp";
var objectNode = null;
var rotation = Motion.create(mathDevice, "scene");
rotation.setConstantRotation(0.01);
// Initialize the previous frame time
var previousFrameTime = TurbulenzEngine.time;
var renderFrame = function renderFrameFn()
{
var currentTime = TurbulenzEngine.time;
var deltaTime = (currentTime - previousFrameTime);
if (deltaTime > 0.1)
{
deltaTime = 0.1;
}
var deviceWidth = graphicsDevice.width;
var deviceHeight = graphicsDevice.height;
var aspectRatio = (deviceWidth / deviceHeight);
if (aspectRatio !== camera.aspectRatio)
{
camera.aspectRatio = aspectRatio;
camera.updateProjectionMatrix();
}
camera.updateViewProjectionMatrix();
if (objectNode)
{
// Update the scene with rotation
rotation.update(deltaTime);
objectNode.setLocalTransform(rotation.matrix);
}
scene.update();
renderer.update(graphicsDevice, camera, scene, currentTime);
if (graphicsDevice.beginFrame())
{
if (renderer.updateBuffers(graphicsDevice, deviceWidth, deviceHeight))
{
renderer.draw(graphicsDevice, clearColor);
}
graphicsDevice.endFrame();
}
};
var intervalID;
var loadingLoop = function loadingLoopFn()
{
if (graphicsDevice.beginFrame())
{
graphicsDevice.clear([1.0, 1.0, 1.0, 1.0]);
graphicsDevice.endFrame();
}
if (sceneLoader.complete())
{
TurbulenzEngine.clearInterval(intervalID);
objectNode = scene.findNode(nodeName);
var sceneExtents = scene.getExtents();
var sceneMinExtent = mathDevice.v3Build(sceneExtents[0], sceneExtents[1], sceneExtents[2]);
var sceneMaxExtent = mathDevice.v3Build(sceneExtents[3], sceneExtents[4], sceneExtents[5]);
var center = mathDevice.v3ScalarMul(mathDevice.v3Add(sceneMaxExtent, sceneMinExtent), 0.5);
var extent = mathDevice.v3Sub(center, sceneMinExtent);
var eyePosition = mathDevice.v3Build(center[0] + extent[0] * 2 * cameraDistanceFactor,
center[1] + extent[1] * cameraDistanceFactor,
center[2] + extent[2] * 2 * cameraDistanceFactor);
camera.lookAt(center, worldUp, eyePosition);
camera.updateViewMatrix();
renderer.updateShader(shaderManager);
intervalID = TurbulenzEngine.setInterval(renderFrame, 1000 / 60);
TurbulenzBridge.stopLoading();
}
};
intervalID = TurbulenzEngine.setInterval(loadingLoop, 1000 / 10);
// Change the clear color before we start loading assets
loadingLoop();
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));
// Load the scene
sceneLoader.load({
scene : scene,
assetPath : "models/duck.dae",
graphicsDevice : graphicsDevice,
textureManager : textureManager,
effectManager : effectManager,
shaderManager : shaderManager,
requestHandler : requestHandler,
append : false,
dynamic : true
});
};
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)
{
var defaultMappingSettings = {
mappingTablePrefix: "staticmax/",
assetPrefix: "missing/",
mappingTableURL: "mapping_table.json"
};
TurbulenzServices.createMappingTable(requestHandler,
gameSession,
mappingTableReceived,
defaultMappingSettings);
};
var gameSession = TurbulenzServices.createGameSession(requestHandler, gameSessionCreated);
// Create a scene destroy callback to run when the window is closed
var appDestroyCallback = function unloadCallbackFn()
{
TurbulenzEngine.clearInterval(intervalID);
gameSession.destroy();
if (scene)
{
scene.destroy();
scene = null;
}
if (renderer)
{
renderer.destroy();
renderer = null;
}
if (textureManager)
{
textureManager.destroy();
textureManager = null;
}
if (shaderManager)
{
shaderManager.destroy();
shaderManager = null;
}
effectManager = null;
clearColor = null;
rotation = null;
camera = null;
TurbulenzEngine.flush();
graphicsDevice = null;
mathDevice = null;
};
TurbulenzEngine.onunload = appDestroyCallback;
};