AlloyStick 骨骼动画引擎 - 腾讯 AlloyTe

beta 0.5.1

http://alloyteam.github.io/AlloyStick

本项目近期在进行重构，因此变动会比较大，如果您有什么好的想法，欢迎在这里提出 magic分支：正在开发的分支

CONTENT demo usage API Licence Demo

We have a demo in this project, you can download the project and run example/stickman/index.html by yourself.

Usage

We only exposed two variables(classes) for the window. So all operations are based on these two classes:

window.AlloyStick window.AlloyUtils

attention: window.AlloyUtils may be removed soon

Here is a suggested workflow to start your animation:

1.create a scene

the only parameter is the context for the canvas.

let demoInstance = new window.AlloyStick({context:canvas.getContext('2d')}); 2.add an role

A scene can has servel roles(objects), you can add roles one by one manually.

there are four parameters：

the config for the role the initial action([{String}animationName,{Number}totalFrames,{Number}transitionFrames,{bool}isloop] and the order of this array can not be changed) the position of the Object([{Number}x,{Number}y]) Whether to call the easing function(In fact the easing function can be redefined by yourself in futher)

demoInstance.addRole( { roleName:'xiaoxiao', image:textureImg, data:AlloyData, fps:40 }, ['comeon',40,10,false], { x:250, y:300 }, { ifEase:true, } ); 3.bind events

You can call the actions by using function rolePlayTo, but the more convenient way is to bind a key to an event: when the user press down the certain key , an action should be called.

The second parameter means the action is called whether 'keydown' or 'keyup'.

The third parameter are some hook functions. There are four hooks totally:

beforeKeyDown afterKeyDown beforeKeyUp afterKeyUp

The forth parameter is important : there are two modes for the animation: the wait mode and the replace mode. In the wait mode, all the triggerd animations will be in an array and acts one by one, pressing a keyboard button for many times quickly can cause the accumulation of animations. But in the replaced mode, the animation being executed can not be interrupted, but there is at most one animation waiting, and there is no accumulation of animations.

the two modes can be used in different scenes.

Finally the example:

demoInstance.mapKeyToAni( { 'j':{rules:[{role:'xiaoxiao',action:['simpleHit',12,5,false]},{role:'dada',action:['simpleHit',12,5,false]}]}, //others are omitted }, 'keydown', { beforeKeyDown:function(e){ let doms = document.getElementsByClassName('key_'+e.key); for(let i = 0; i<doms.length; i++){ AlloyUtils.addClass(doms[i],'pressdown'); } }, afterKeyUp:function(e){ let doms = document.getElementsByClassName('key_'+e.key); for(let i = 0; i<doms.length; i++){ AlloyUtils.removeClass(doms[i],'pressdown'); } } }, 'replace', ); 4.start

Just start the instance:

demoInstance.start();

This step is necessary, otherwise all actions can not be performed.

API window.AlloyStick new AlloyStick(config) arguments: {Object} config return: the instance of AlloyStick example:

let demoInstance = new window.AlloyStick({context:canvas.getContext('2d')}); AlloyStick.addRole(roleConfig,initialAction,initialPosition,easeConfig) arguments: {Object} roleConfig {Object} initialAction {Object} initialPosition {Object} easeConfig default:{ifEase:false} Optional return: no return usage: add role to this instance's scene(an instance of AlloyStick has only one scene) example:

demoInstance.addRole( { roleName:'xiaoxiao', image:textureImg, data:AlloyData, fps:40 }, ['comeon',40,10,false], { x:250, y:300 }, { ifEase:true, } ); AlloyStick.roleNumbers() arguments: no arguments return: {Number} usage: return the number of roles of this AlloyStick instance AlloyStick.setVector(roleName) arguments: {String} roleName Optional return: no return usage: change all the roles(when the roleName is undefined) or certain roles to the vector mode AlloyStick.removeVector(roleName) arguments: {String} roleName Optional return: no return usage: change all the roles(when the roleName is undefined) or certain roles to the normal mode AlloyStick.showFPS(dom) arguments: {String|dom} dom Optional returns: no return usage: show the fps monitor AlloyStick.hideFPS() arguments: no argument return: no return usage: hide the fps monitor AlloyStick.pause(obj) arguments: {Object} obj Optional return: no return usage: pause or restart the whole scene(if obj is undefined or no roleName is defined in the obj) or the certain role hint: when no 'value' property is specified in the obj, the pause means switch state, pause() twice means restart example:

demoInstance.pause({ value:false /*means restart*/ roleName:"xiaoxiao" }) AlloyStick.clear() arguments: no arguments return: no return usage: clear the whole scene of this instance AlloyStick.mapKeyToAni(lists,keyDownOrUp,callBacks,replaceOrWait = 'wait') arguments: {Object} lists {'keydown'|'keyup'} keyDownOrUp {Object} callBacks {'wait'|'replace'} replaceOrWait default: 'wait' Optional return: no return usage: map the keyboard buttons to actions example:

demoInstance.mapKeyToAni( { 'j':{rules:[{role:'xiaoxiao',action:['simpleHit',12,5,false]},{role:'dada',action:['simpleHit',12,5,false]}]}, //others are omitted }, 'keydown', { beforeKeyDown:function(e){ let doms = document.getElementsByClassName('key_'+e.key); for(let i = 0; i<doms.length; i++){ AlloyUtils.addClass(doms[i],'pressdown'); } }, afterKeyUp:function(e){ let doms = document.getElementsByClassName('key_'+e.key); for(let i = 0; i<doms.length; i++){ AlloyUtils.removeClass(doms[i],'pressdown'); } } }, 'replace', ); AlloyStick.addRules(lists) arguments: {Object} lists return: no return usage: add the rules for mapping the keyboard buttons to actions AlloyStick.removeRules(key,role) arguments: {String} key role optional return: no return usage: add the rules for mapping the keyboard buttons to actions(if the parameter role is undefined, remove all the actions for the key, else remove the actions of the certain role for the key) AlloyStick.changeReplaceOrWait(replaceOrWait) arguments: {'wait'|'replace'} replaceOrWait return: no return usage: change the mode to 'wait' mode or 'replace' mode. AlloyStick.rolePlayTo(roleName,actionConfig) arguments: {String}roleName {Array}actionConfig hint: [{String}animationName,{Number}totalFrames,{Number}transitionFrames,{bool}isloop] return: no return usage: Use js to call the action AlloyStick.start() arguments: no argument return: no return usage: start this Instance Licence

This content is released under the GPL License.