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Cocos2d-x-3.x版 Js Binding 的手动绑定实现

来源:程序员人生   发布时间:2015-04-13 08:42:52 阅读次数:3873次

网上流传的是1份2.x版本的,现在已更新到3.x,经过千辛万苦,终究调试成功。

1 .首先定义待绑定的类

AnimationKoo.h #ifndef __AnimationKoo_H__ #define __AnimationKoo_H__ namespace ls{ class AnimationKoo{ public: virtual void funcTest(); static AnimationKoo * create(); }; } #endif // __AnimationKoo_H__ AnimationKoo.cpp #include "cocos2d.h" #include "cocos2d_specifics.hpp" #include " AnimationKoo.h" void ls::AnimationKoo::funcTest(){ CCLOG("binding test..."); } ls::AnimationKoo * ls::AnimationKoo::create() { AnimationKoo * ret = new AnimationKoo(); return ret; }

定义类在ls命名空间,我们测试funcTest方法

 

2,添加绑定代码到AppDelegate 的类

applicationDidFinishLaunching方法里面,添加sc->addRegisterCallback(register_all_ls);//手动绑定的类

编写 jsb_ls_auto.h ,以下

#include "jsapi.h" #include "jsfriendapi.h" #include "ScriptingCore.h" void js_register_ls_Animationkoo(JSContext* cx, JS::HandleObject global); void js_cocos2d_Animationkoo_finalize(JSFreeOp *fop, JSObject *obj); bool js_cocos2dx_Animationkoo_create(JSContext *cx, uint32_t argc, jsval *vp); static bool js_is_native_obj(JSContext *cx, uint32_t argc, jsval *vp); bool js_cocos2dx_AnimationkooFuncTest_getDescription(JSContext *cx, uint32_t argc, jsval *vp); bool js_cocos2dx_Animationkoo_constructor(JSContext *cx, uint32_t argc, jsval *vp); void register_all_ls(JSContext* cx, JS::HandleObject obj);

没错,就是这么坑爹,需要写这么多东西。

 

下面是它的实现

jsb_ls_auto.cpp


#include "cocos2d.h" #include "koogame/Animationkoo.h" #include "jsapi.h" #include "jsb_ls_auto.h" #include "cocos2d_specifics.hpp" // 定义 js 真个类型 JSClass *jsb_LsLeafsoar_class; JSObject *jsb_LsLeafsoar_prototype; // 实现 ls 命名空间下的类绑定 void register_all_ls(JSContext* cx, JS::HandleObject obj) { JS::RootedObject ns(cx); get_or_create_js_obj(cx, obj, "ls", &ns); // 实现绑定 Leafsoar 类,它的定义后文给出 js_register_ls_Animationkoo(cx, ns); } void js_cocos2d_Animationkoo_finalize(JSFreeOp *fop, JSObject *obj) { CCLOGINFO("jsbindings: finalizing JS object %p (Node)", obj); } bool js_cocos2dx_Animationkoo_create(JSContext *cx, uint32_t argc, jsval *vp) { JS::CallArgs args = JS::CallArgsFromVp(argc, vp); if (argc == 0) { ls::AnimationKoo* ret = ls::AnimationKoo::create(); jsval jsret = JSVAL_NULL; do { if (ret) { js_proxy_t *jsProxy = js_get_or_create_proxy<ls::AnimationKoo>(cx, (ls::AnimationKoo*)ret); jsret = OBJECT_TO_JSVAL(jsProxy->obj); } else { jsret = JSVAL_NULL; } } while (0); args.rval().set(jsret); return true; } JS_ReportError(cx, "js_cocos2dx_Animationkoo_create : wrong number of arguments"); return false; } static bool js_is_native_obj(JSContext *cx, uint32_t argc, jsval *vp) { JS::CallArgs args = JS::CallArgsFromVp(argc, vp); args.rval().setBoolean(true); return true; } bool js_cocos2dx_AnimationkooFuncTest_getDescription(JSContext *cx, uint32_t argc, jsval *vp) { JS::CallArgs args = JS::CallArgsFromVp(argc, vp); JS::RootedObject obj(cx, args.thisv().toObjectOrNull()); js_proxy_t *proxy = jsb_get_js_proxy(obj); ls::AnimationKoo* cobj = (ls::AnimationKoo *)(proxy ? proxy->ptr : NULL); JSB_PRECONDITION2( cobj, cx, false, "js_cocos2dx_Node_getDescription : Invalid Native Object"); if (argc == 0) { cobj->funcTest(); /* std::string ret = cobj->funcTest(); jsval jsret = JSVAL_NULL; jsret = std_string_to_jsval(cx, ret); args.rval().set(jsret); */ return true; } JS_ReportError(cx, "js_cocos2dx_Node_getDescription : wrong number of arguments: %d, was expecting %d", argc, 0); return false; } bool js_cocos2dx_Animationkoo_constructor(JSContext *cx, uint32_t argc, jsval *vp) { JS::CallArgs args = JS::CallArgsFromVp(argc, vp); bool ok = true; ls::AnimationKoo* cobj = new (std::nothrow) ls::AnimationKoo(); cocos2d::Ref *_ccobj = dynamic_cast<cocos2d::Ref *>(cobj); if (_ccobj) { _ccobj->autorelease(); } TypeTest<ls::AnimationKoo> t; js_type_class_t *typeClass = nullptr; std::string typeName = t.s_name(); auto typeMapIter = _js_global_type_map.find(typeName); CCASSERT(typeMapIter != _js_global_type_map.end(), "Can't find the class type!"); typeClass = typeMapIter->second; CCASSERT(typeClass, "The value is null."); // JSObject *obj = JS_NewObject(cx, typeClass->jsclass, typeClass->proto, typeClass->parentProto); JS::RootedObject proto(cx, typeClass->proto.get()); JS::RootedObject parent(cx, typeClass->parentProto.get()); JS::RootedObject obj(cx, JS_NewObject(cx, typeClass->jsclass, proto, parent)); args.rval().set(OBJECT_TO_JSVAL(obj)); // link the native object with the javascript object js_proxy_t* p = jsb_new_proxy(cobj, obj); AddNamedObjectRoot(cx, &p->obj, "ls::AnimationKoo"); if (JS_HasProperty(cx, obj, "_ctor", &ok) && ok) ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(obj), "_ctor", args); return true; } void js_register_ls_Animationkoo(JSContext* cx, JS::HandleObject global){ jsb_LsLeafsoar_class = (JSClass *)calloc(1, sizeof(JSClass)); jsb_LsLeafsoar_class->name = "AnimationKoo"; jsb_LsLeafsoar_class->addProperty = JS_PropertyStub; jsb_LsLeafsoar_class->delProperty = JS_DeletePropertyStub; jsb_LsLeafsoar_class->getProperty = JS_PropertyStub; jsb_LsLeafsoar_class->setProperty = JS_StrictPropertyStub; jsb_LsLeafsoar_class->enumerate = JS_EnumerateStub; jsb_LsLeafsoar_class->resolve = JS_ResolveStub; jsb_LsLeafsoar_class->convert = JS_ConvertStub; jsb_LsLeafsoar_class->finalize = js_cocos2d_Animationkoo_finalize; jsb_LsLeafsoar_class->flags = JSCLASS_HAS_RESERVED_SLOTS(2); static JSPropertySpec properties[] = { JS_PSG("__nativeObj", js_is_native_obj, JSPROP_PERMANENT | JSPROP_ENUMERATE), JS_PS_END }; static JSFunctionSpec funcs[] = { JS_FN("funcTest", js_cocos2dx_AnimationkooFuncTest_getDescription, 0, JSPROP_PERMANENT | JSPROP_ENUMERATE), JS_FS_END }; static JSFunctionSpec st_funcs[] = { JS_FN("create", js_cocos2dx_Animationkoo_create, 0, JSPROP_PERMANENT | JSPROP_ENUMERATE), JS_FS_END }; jsb_LsLeafsoar_prototype = JS_InitClass( cx, global, JS::NullPtr(), // parent proto jsb_LsLeafsoar_class, js_cocos2dx_Animationkoo_constructor, 0, // constructor properties, funcs, NULL, // no static properties st_funcs); // make the class enumerable in the registered namespace // bool found; //FIXME: Removed in Firefox v27 // JS_SetPropertyAttributes(cx, global, "Node", JSPROP_ENUMERATE | JSPROP_READONLY, &found); // add the proto and JSClass to the type->js info hash table TypeTest<ls::AnimationKoo> t; js_type_class_t *p; std::string typeName = t.s_name(); if (_js_global_type_map.find(typeName) == _js_global_type_map.end()) { p = (js_type_class_t *)malloc(sizeof(js_type_class_t)); p->jsclass = jsb_LsLeafsoar_class; p->proto = jsb_LsLeafsoar_prototype; p->parentProto = NULL; _js_global_type_map.insert(std::make_pair(typeName, p)); } }

这次要写的更多了。

 

离成功就差1步了。cocos2d js中测试

                   var animationKoo =ls.AnimationKoo.create();

                   animationKoo.funcTest();

 

输出binding test...,成功


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