Analysis of transfer parameters of COCOS2DX Tolua

COCOS2DX Tolua Transfer parameter analysis: tolua_cocos2d_ccnode_addchild00 = = void Ccnode::addchild (Ccnode *child) Tolua_cocos2d_ccnode_ ADDCHILD01 = = void Ccnode::addchild (ccnode *child, int zOrder) tolua_cocos2d_ccnode_addchild02 = = void Ccnode::addchild ( Ccnode *child, int zOrder, int tag) above is the use of Tolua to the C + + to Lua, the above three respectively corresponding to the number of different parameters. Let's analyze the last one here:/* Method:addchild of Class Ccnode */#ifndef tolua_disable_tolua_cocos2d_ccnode_addchild02static int TOLUA_COCOS2D_CCNODE_ADDCHILD02 (lua_state* tolua_s) {tolua_error tolua_err;//here to determine whether the argument is legitimate, can only determine whether the parameter type is legitimate, if the parameter type check does not pass,     Will error if (!tolua_isusertype (tolua_s,1, "Ccnode", 0,&tolua_err) | |     !tolua_isusertype (tolua_s,2, "Ccnode", 0,&tolua_err) | |     !tolua_isnumber (tolua_s,3,0,&tolua_err) | |     !tolua_isnumber (tolua_s,4,0,&tolua_err) | | !tolua_isnoobj (Tolua_s,5,&tolua_err)) goto Tolua_lerror;  else {///For example: Middlebg:addchild (Testsprite, z_order_1, 200)//We pass in the parameters and the following one by one corresponds//Here you can see clearly the order of incoming parameters, the first is MIDDLEBG ... ccnode* self = (ccnode*) tolua_tousertype (tolua_s,1,0); --MIDDLEBG--1 ccnode* child = ((ccnode*) Tolua_tousertype (tolua_s,2,0));          --Testsprite--2 int zOrder = ((int) tolua_tonumber (tolua_s,3,0));             --z_order_1--3 int tag = ((int) tolua_tonumber (tolua_s,4,0)); ---4#ifndef tolua_release if (!self) tolua_error (tolua_s, "Invalid ' self ' in function ' AddChild '", NULL); #e  NDIF {//Here the Testsprite added to the MIDDLEBG self->addchild (Child,zorder,tag); }} return 0;tolua_lerror:return tolua_cocos2d_ccnode_addchild01 (tolua_s);} #endif//#ifndef tolua_disable Example://middlebg:addchild (Testsprite, z_order_1, 200) in the pass parameter, we do not assign a value to z_order_1, that is nil, then// The following error occurred, see here argument #3, indicating that it is the third parameter error, and here we are clearly the second parameter, look at the above analysis//I think we should understand that through this method, we will find this kind of problem later, it would be more convenient. 03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): LUA ERROR: [string "Xxxxxxxxxxxxx ..."]:171:error in function ' AddChild ' .03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): Argument #3 is ' nil '; ' [No object] ' expected.03-31 10:09:50.499:d/cocos2d-xDebug Info (3169): Stack traceback:03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): [C]: in function ' AddChild ' 03-31 10:09 : 50.499:d/cocos2d-x Debug Info (3169): [string "xxxxxxxxxxxxx ..."]:171:in function ' Initmiddle ' 03-31 10:09:50.499:d/ Cocos2d-x Debug Info (3169): [string "xxxxxxxxxxxxx ..."]:35:in function ' Initui ' 03-31 10:09:50.499:d/cocos2d-x debug inf O (3169): [string "xxxxxxxxxxxxx ..."]:27:in function ' ctor ' 03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): [string "xxx Xxxxxxxxxx "]:34:in function ' create ' 03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): [string" Xxxxxxxxxxxxx "]:38:in Fu Nction ' new ' 03-31 10:09:50.499:d/cocos2d-x Debug Info (3169): [string ' xxxxxxxxxxxxx ']:44:in function ' Pushscene ' 03-31 1 0:09:50.499:d/cocos2d-x Debug Info (3169): [string "xxxxxxxxxxxxx"]:309:in function ' CallBack ' 03-31 10:09:50.499:d/ Cocos2d-x Debug Info (3169): [string "xxxxxxxxxxxxx"]:653:in function <[string "xxxxxxxxxxxxx"]:651>

Analysis of transfer parameters of COCOS2DX Tolua