Haskasu @ CG

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Haskasu

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https://haskasu.com

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My Twilight Wars

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# CG.Base Provide tool kits that helps you fast build an app on Code.Gamelet. Key features include: 1. initialize [pixi.js](#pixi.init) environment 1. load and access resources that are imported via Code.Gamelet IDE 1. manage update functions that are called every frame 1. provide debug utilities ## Getting Started Follow the steps below to fast start an app with [PixiJS](#pixi.init). We will implement a box2d environment to demo the usage of Base. <a name="pixi.init"></a> ## Start with Pixi.js<a name="pixi.init"></a> ```typescript class App { constructor() { // initialize pixi CG.Base.pixi.initialize(600, 400); CG.Base.pixi.physicsDebugDraw.setActive(true); // make a physics wall var wall = CG.Base.physics.createPhysicsObject('wall', {type: 'static'}); wall.addEdge(new CG.Base.geom.Point(10, 300), new CG.Base.geom.Point(500, 330)); // make a dynamic physics ball var ball = CG.Base.physics.createPhysicsObject('ball', {type: 'dynamic'}); ball.addCircle(0, 0, 10, {friction: 0.1, density: 0.1, restitution: 0.3}); ball.setPosition(100, 10); } } new App(); ``` @see [Demo](/edit/Base_Start_with_PIXI) ## Load and play with Resources To load resources that are imported from IDE: ```typescript // tell resources what resources to load (using the alias names) CG.Base.resourceManager.addAppResource('Game1.button'); CG.Base.resourceManager.addAppResource('Game1.music'); // start loading CG.Base.resourceManager.load(() => { // all loaded callback // create button with the image "Game1.button" alias name var button = new CG.Base.pixis.interactive.Button(CG.Base.resourceManager.createPixiSprite('Game1.button', 20, 20)); // set the position of the button button.displayObject.position.set(100, 100); // add the button to pixi.root, so pixi can render the button CG.Base.pixi.root.addChild(button.displayObject); // add a click event listener button.on(CG.Base.pixis.interactive.Button.EVENT.CLICK, () => { // when the button is clicked, play sound with "Game1.music" alias name CG.Base.resourceManager.playSound('Game1.music') }); }); ``` @see [Demo](/edit/Base_Load_Resources) ## Manage update functions Take advantage of CG.Base.addUpdateFunction to make a function called every frame ```typescript class App { constructor() { CG.Base.pixi.initialize(600, 400); CG.Base.addUpdateFunction(this, this.update); } // this function will be called every frame(called 60 times per second normally) private update(deltaTime:number):void { // do something } } new App(); ``` @see [Demo](/edit/Base_Update_and_Delay_Func) You can call a function in the future by CG.Base.addDelayFunction ```typescript class App { constructor() { CG.Base.pixi.initialize(600, 400); // call this.delayAction in 1000 milliseconds(= one second) CG.Base.addDelayFunction(this, this.delayAction, 1000); } private delayAction():void { // do something } } new App(); ``` @see [Demo](/edit/Base_Update_and_Delay_Func) ## Interact with Keyboard Use CG.Base.keyboard package to interact with keyboard events. ```typescript export class App { constructor() { // make the window focused, so we can receive keyboard events. window.focus(); // initialize pixi CG.Base.pixi.initialize(600, 400); // tell resourceManager to load the resource 'Game1.button' CG.Base.resourceManager.addAppResource('Game1.button'); // load resources, and wait callback when resources are all loaded CG.Base.resourceManager.load(() => { // add keyboard event listener, when a key is pressed CG.Base.keyboardManager.on(CG.Base.keyboard.KeyboardManagerEvent.PRESSED, key => { // if the pressed key is space, we call this.createSprite() if (key == CG.Base.keyboard.Key.SPACE) { this.createSprite(); } }); }); } private createSprite(): void { // create a sprite with the image 'Game1.button' var sprite: PIXI.Sprite = CG.Base.resourceManager.createPixiSprite('Game1.button'); // set the position of the sprite sprite.position.set(CG.Base.utils.IntUtil.randomBetween(100, 500), CG.Base.utils.IntUtil.randomBetween(100, 300)); // add the sprite to pixi.root, so it can be rendered CG.Base.pixi.root.addChild(sprite); } } new App(); ``` @see [Demo](/edit/Base_PIXI_Keyboard) ## Debugging The best debug tool on browser is the [developer tools](https://developer.chrome.com/devtools) in Chrome (F12). To find your source code in developer tools, first open developer tools(F12), click "Sources" tab, and search the Network tree as below: > top => {projectCode} => gameFrame => code.gamelet.com => gassets => file/{projectCode}/src for example, if the projectCode is 'Game1', source code is located at > top => Game1 => gameFrame => code.gamelet.com => gassets => file/Game1/src ![Source Network Tree](https://code.gamelet.com/gassets/asset/Base/Base.networktree/networktree.png "Source Network Tree") ### Add Watch In addition to browser's debugging tools, CG.Base provides other useful tools. CG.Base.addWatch() adds objects or objects' properties to Watch panel in CG IDE. ```typescript export class App { constructor() { // initialize pixi CG.Base.pixi.initialize(600, 400); // tell resourceManager to load the resource 'Game1.button' CG.Base.resourceManager.addAppResource('Game1.button'); CG.Base.resourceManager.load(() => { // add the created sprite into Watch panel, the alias name in Watch panel is 'sprite' CG.Base.addWatch('sprite', this.createSprite()); }); // add this(App)'s 'time' property into Watch panel. The alias name for this property is 'now' CG.Base.addWatch('now', this, 'time'); } private createSprite(): PIXI.Sprite { // create a sprite with the image 'Game1.button' var sprite: PIXI.Sprite = CG.Base.resourceManager.createPixiSprite('Game1.button'); // set the position of the sprite sprite.position.set(CG.Base.utils.IntUtil.randomBetween(100, 500), CG.Base.utils.IntUtil.randomBetween(100, 300)); // add the sprite to pixi.root, so it can be rendered CG.Base.pixi.root.addChild(sprite); return sprite; } // a getter function, that works like a property of App object. get time(): number { return CG.Base.time(); } } new App(); ``` @see [Demo](/edit/Base_Add_Watch) ## Versioning We use [SemVer](http://semver.org/) for versioning. ## Links and Resources This library is running with the libraries below. * [Pixi.js](http://www.pixijs.com/) - 2D rendering engine * [API reference](http://pixijs.download/release/docs/index.html) * [Examples](http://pixijs.io/examples/) * [Pixi keyboard](https://github.com/Nazariglez/pixi-keyboard) - Keyboard utility * [Pixi sound](https://github.com/pixijs/pixi-sound) - Sound utility * [Pixi filters](https://github.com/pixijs/pixi-filters) - Filters Collections * [Pixi GafPlayer](https://github.com/mathieuanthoine/PixiGAFPlayer) - [GafMedia](https://gafmedia.com/) Player * [Liquidfun](http://google.github.io/liquidfun/) - Box2D based physics engine * [MD5](http://www.myersdaily.org/joseph/javascript/md5-text.html) - MD5 implementation by Joseph Myers ## Authors **Haska Su** - *Initial work*

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