cocos2d-x Bezier 根据时间设定即时坐标位置

1.c++底层修改

CCActionInterval.h中增加 set 方法

/**
 * seconds had  elapsed since the actions startd to run.
 */
void setElapsed(float elapsed,bool firstTick);

CCActionInterval.cpp

void ActionInterval::setElapsed(float elapsed,bool firstTick)
{
   _elapsed = elapsed;
   _firstTick = firstTick;
}

2.js-bindings

项目/frameworks/cocos2d-x/cocos/scripting/js-bindings/auto/jsb_cocos2dx_auto.cpp

bool js_cocos2dx_ActionInterval_setElapsed(JSContext *cx,uint32_t argc,jsval *vp)
{
    JS::CallArgs args = JS::CallArgsFromVp(argc,vp);
    bool ok = true;
    JS::RootedObject obj(cx,args.thisv().toObjectOrNull());
    js_proxy_t *proxy = jsb_get_js_proxy(obj);
    cocos2d::ActionInterval* cobj = (cocos2d::ActionInterval *)(proxy ? proxy->ptr : NULL);
    JSB_PRECONDITION2( cobj,cx,false,"js_cocos2dx_ActionInterval_setElapsed : Invalid Native Object");
    if (argc == 2) {
        double arg0 = 0;
        bool arg1;
        ok &= JS::ToNumber( cx,args.get(0),&arg0) && !std::isnan(arg0);
        arg1 = JS::ToBoolean(args.get(1));
        JSB_PRECONDITION2(ok,"js_cocos2dx_ActionInterval_setElapsed : Error processing arguments");
        cobj->setElapsed(arg0,arg1);
        args.rval().setUndefined();
        return true;
    }

    JS_ReportError(cx,"js_cocos2dx_ActionInterval_setElapsed : wrong number of arguments: %d,was expecting %d",argc,2);
    return false;
}

static JSFunctionSpec funcs[] = {
    JS_FN("getAmplitudeRate",js_cocos2dx_ActionInterval_getAmplitudeRate,0,JSPROP_PERMANENT | JSPROP_ENUMERATE),JS_FN("setElapsed",js_cocos2dx_ActionInterval_setElapsed,2,JS_FN("initWithDuration",js_cocos2dx_ActionInterval_initWithDuration,1,JS_FN("setAmplitudeRate",js_cocos2dx_ActionInterval_setAmplitudeRate,JS_FN("getElapsed",js_cocos2dx_ActionInterval_getElapsed,JS_FS_END
};

项目/frameworks/cocos2d-x/cocos/scripting/js-bindings/auto/jsb_cocos2dx_auto.hpp

bool js_cocos2dx_ActionInterval_setElapsed(JSContext *cx,jsval *vp);

3.js

项目/frameworks/cocos2d-html5/cocos2d/actions/CCActionInterval.js

setElapsed:function (elapsed ,firstTick) {
    this._elapsed = elapsed;
    this._firstTick = firstTick;
},