<1>cocos new "Test" -p com.qingxue.game -l lua 创建lua项目
<2>根据tools/tolua/README.mdown下提示安装必要的库
brew install python
export PYTHON_BIN=/usr/local/Cellar/python/2.7.11/bin/python
export NDK_ROOT=/Users/jianan/Documents/android-ndk-r9b
sudo easy_install pip
sudo pip install PyYAML
sudo pip install Cheetah
LibclangError: dlopen(libclang.dylib, 6): image not found. To provide a path to libclang use Config.set_library_path() or Config.set_library_file().
方法1：
这样可以解决：./frameworks/cocos2d-x/tools/bindings-generator/clang/cindex.py 第 3395 行 改为 ： library = cdll.LoadLibrary("../bindings-generator/libclang/" + self.get_filename())
错误信息提示 找不到libclang 需要调用一下 Config.set_library_path() 或者 Config.set_library_file() 方法
这个问题是因为生成Lua绑定的时候需要 libclang 这个库
查看目录 YOUR_PROJECT/frameworks/cocos2d-x/tools/bindings-generator/libclang 会发现Cocos引擎中提供了这个库
所以，只需要设置一下libchang路径就可以了。
修改 YOUR_PROJECT/frameworks/cocos2d-x/tools/bindings-generator/generator.py
方法2：
在967行的位置：
class Generator(object):
def __init__(self, opts):
# 加入下面两行代码，注意缩进格式
libchangPath = os.path.abspath(os.path.join(os.path.dirname(__file__), 'libclang'))
cindex.Config.set_library_path(libchangPath)
self.index = cindex.Index.create()
...
<3>建立要绑定的.h和.cpp文件
CustomClass.h
#ifndef __CUSTOM__CLASS
#define __CUSTOM__CLASS
#include "cocos2d.h"
namespace cocos2d {
class CustomClass : public cocos2d::Ref
{
public:
CustomClass();
~CustomClass();
bool init();
std::string helloMsg();
CREATE_FUNC(CustomClass);
};
} //namespace cocos2d
#endif // __CUSTOM__CLASS
CustomClass.cpp
#include "CustomClass.h"
USING_NS_CC;
CustomClass::CustomClass(){
}
CustomClass::~CustomClass(){
}
bool CustomClass::init(){
return true;
}
std::string CustomClass::helloMsg() {
return "Hello from CustomClass::sayHello";
}
<4>tools/tolua下写ini配置文件
1,cocos2dx_custom.ini
[cocos2dx_custom]
# the prefix to be added to the generated functions. You might or might not use this in your own
# templates
prefix = cocos2dx_custom
# create a target namespace (in javascript, this would create some code like the equiv. to `ns = ns || {}`)
# all classes will be embedded in that namespace
target_namespace = cc
macro_judgement =
android_headers = -I%(androidndkdir)s/platforms/android-14/arch-arm/usr/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.7/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.7/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.8/include
android_flags = -D_SIZE_T_DEFINED_
clang_headers = -I%(clangllvmdir)s/lib/clang/3.3/include
#clang_flags = -nostdinc -x c++ -std=c++11 -D CC_USE_NAVMESH
clang_flags = -nostdinc -x c++ -std=c++11
win32_clang_flags = -U __SSE__
cocos_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/platform/android -I%(cocosdir)s/external -I%(cocosdir)s/external/recast/Detour -I%(cocosdir)s/external/recast/DetourCrowd -I%(cocosdir)s/external/recast/DetourTileCache -I%(cocosdir)s/external/recast/DebugUtils -I%(cocosdir)s/external/recast/fastlz -I%(cocosdir)s/external/recast/Recast -I%(cocosdir)s/external/lua/luajit/include -I%(cocosdir)s/external/lua/tolua -I%(cocosdir)s/cocos/scripting/lua-bindings/manual
cocos_flags = -DANDROID
cxxgenerator_headers =
# extra arguments for clang
extra_arguments = %(android_headers)s %(clang_headers)s %(cxxgenerator_headers)s %(cocos_headers)s %(android_flags)s %(clang_flags)s %(cocos_flags)s %(extra_flags)s
# what headers to parse
#headers = %(cocosdir)s/cocos/navmesh/CCNavMesh.h %(cocosdir)s/cocos/scripting/lua-bindings/manual/navmesh/lua_cocos2dx_navmesh_conversions.h
#headers = %(cocosdir)s/tests/LuabindingTest/frameworks/runtime-src/Classes/CustomClass.h %(cocosdir)s/cocos/scripting/lua-bindings/manual/navmesh/lua_cocos2dx_custom_class.h
headers = %(cocosdir)s/tests/LuabindingTest/frameworks/runtime-src/Classes/CustomClass.h
# what classes to produce code for. You can use regular expressions here. When testing the regular
# expression, it will be enclosed in "^$", like this: "^Menu*$".
#classes = NavMesh NavMeshAgent NavMeshObstacle
classes = CustomClass.*
# what should we skip? in the format ClassName::[function function]
# ClassName is a regular expression, but will be used like this: "^ClassName$" functions are also
# regular expressions, they will not be surrounded by "^$". If you want to skip a whole class, just
# add a single "*" as functions. See bellow for several examples. A special class name is "*", which
# will apply to all class names. This is a convenience wildcard to be able to skip similar named
# functions from all classes.
#skip = NavMesh::[findPath],
# NavMeshObstacle::[setRadius setHeight],
# NavMeshAgent::[move]
skip =
rename_functions =
rename_classes =
# for all class names, should we remove something when registering in the target VM?
remove_prefix =
# classes for which there will be no "parent" lookup
classes_have_no_parents =
# base classes which will be skipped when their sub-classes found them.
base_classes_to_skip =
# classes that create no constructor
# Set is special and we will use a hand-written constructor
abstract_classes =
# Determining whether to use script object(js object) to control the lifecycle of native(cpp) object or the other way around. Supported values are 'yes' or 'no'.
script_control_cpp = no
2,genbindings.py
#!/usr/bin/python
# This script is used to generate luabinding glue codes.
# Android ndk version must be ndk-r9b.
import sys
import os, os.path
import shutil
import ConfigParser
import subprocess
import re
from contextlib import contextmanager
def _check_ndk_root_env():
''' Checking the environment NDK_ROOT, which will be used for building
'''
try:
NDK_ROOT = os.environ['NDK_ROOT']
except Exception:
print "NDK_ROOT not defined. Please define NDK_ROOT in your environment."
sys.exit(1)
return NDK_ROOT
def _check_python_bin_env():
''' Checking the environment PYTHON_BIN, which will be used for building
'''
try:
PYTHON_BIN = os.environ['PYTHON_BIN']
except Exception:
print "PYTHON_BIN not defined, use current python."
PYTHON_BIN = sys.executable
return PYTHON_BIN
class CmdError(Exception):
pass
@contextmanager
def _pushd(newDir):
previousDir = os.getcwd()
os.chdir(newDir)
yield
os.chdir(previousDir)
def _run_cmd(command):
ret = subprocess.call(command, shell=True)
if ret != 0:
message = "Error running command"
raise CmdError(message)
def main():
cur_platform= '??'
llvm_path = '??'
ndk_root = _check_ndk_root_env()
# del the " in the path
ndk_root = re.sub(r"\"", "", ndk_root)
python_bin = _check_python_bin_env()
platform = sys.platform
if platform == 'win32':
cur_platform = 'windows'
elif platform == 'darwin':
cur_platform = platform
elif 'linux' in platform:
cur_platform = 'linux'
else:
print 'Your platform is not supported!'
sys.exit(1)
if platform == 'win32':
x86_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm-3.3/prebuilt', '%s' % cur_platform))
else:
x86_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm-3.3/prebuilt', '%s-%s' % (cur_platform, 'x86')))
x64_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm-3.3/prebuilt', '%s-%s' % (cur_platform, 'x86_64')))
if os.path.isdir(x86_llvm_path):
llvm_path = x86_llvm_path
elif os.path.isdir(x64_llvm_path):
llvm_path = x64_llvm_path
else:
print 'llvm toolchain not found!'
print 'path: %s or path: %s are not valid! ' % (x86_llvm_path, x64_llvm_path)
sys.exit(1)
project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
cocos_root = os.path.abspath(os.path.join(project_root, ''))
cxx_generator_root = os.path.abspath(os.path.join(project_root, 'tools/bindings-generator'))
# save config to file
config = ConfigParser.ConfigParser()
config.set('DEFAULT', 'androidndkdir', ndk_root)
config.set('DEFAULT', 'clangllvmdir', llvm_path)
config.set('DEFAULT', 'cocosdir', cocos_root)
config.set('DEFAULT', 'cxxgeneratordir', cxx_generator_root)
config.set('DEFAULT', 'extra_flags', '')
# To fix parse error on windows, we must difine __WCHAR_MAX__ and undefine __MINGW32__ .
if platform == 'win32':
config.set('DEFAULT', 'extra_flags', '-D__WCHAR_MAX__=0x7fffffff -U__MINGW32__')
conf_ini_file = os.path.abspath(os.path.join(os.path.dirname(__file__), 'userconf.ini'))
print 'generating userconf.ini...'
with open(conf_ini_file, 'w') as configfile:
config.write(configfile)
# set proper environment variables
if 'linux' in platform or platform == 'darwin':
os.putenv('LD_LIBRARY_PATH', '%s/libclang' % cxx_generator_root)
if platform == 'win32':
path_env = os.environ['PATH']
os.putenv('PATH', r'%s;%s\libclang;%s\tools\win32;' % (path_env, cxx_generator_root, cxx_generator_root))
try:
tolua_root = '%s/tools/tolua' % project_root
output_dir = '%s/cocos/scripting/lua-bindings/auto' % project_root
cmd_args = {'cocos2dx.ini' : ('cocos2d-x', 'lua_cocos2dx_auto'), \
'cocos2dx_extension.ini' : ('cocos2dx_extension', 'lua_cocos2dx_extension_auto'), \
'cocos2dx_ui.ini' : ('cocos2dx_ui', 'lua_cocos2dx_ui_auto'), \
'cocos2dx_studio.ini' : ('cocos2dx_studio', 'lua_cocos2dx_studio_auto'), \
'cocos2dx_spine.ini' : ('cocos2dx_spine', 'lua_cocos2dx_spine_auto'), \
'cocos2dx_physics.ini' : ('cocos2dx_physics', 'lua_cocos2dx_physics_auto'), \
'cocos2dx_experimental_video.ini' : ('cocos2dx_experimental_video', 'lua_cocos2dx_experimental_video_auto'), \
'cocos2dx_experimental.ini' : ('cocos2dx_experimental', 'lua_cocos2dx_experimental_auto'), \
'cocos2dx_controller.ini' : ('cocos2dx_controller', 'lua_cocos2dx_controller_auto'), \
'cocos2dx_custom.ini' : ('cocos2dx_custom', 'lua_cocos2dx_custom'), \
}
target = 'lua'
generator_py = '%s/generator.py' % cxx_generator_root
for key in cmd_args.keys():
args = cmd_args[key]
cfg = '%s/%s' % (tolua_root, key)
print 'Generating bindings for %s...' % (key[:-4])
command = '%s %s %s -s %s -t %s -o %s -n %s' % (python_bin, generator_py, cfg, args[0], target, output_dir, args[1])
_run_cmd(command)
if platform == 'win32':
with _pushd(output_dir):
_run_cmd('dos2unix *')
print '---------------------------------'
print 'Generating lua bindings succeeds.'
print '---------------------------------'
except Exception as e:
if e.__class__.__name__ == 'CmdError':
print '---------------------------------'
print 'Generating lua bindings fails.'
print '---------------------------------'
sys.exit(1)
else:
raise
# -------------- main --------------
if __name__ == '__main__':
main()
<5>cd 到 frameworks/cocos2d-x/tools/tolua下面，运行./genbindings.py生成绑定文件
其中.hpp和.cpp在cocos/scripting/lua-bindings/auto中
生成的lua类名在cocos/scripting/lua-bindings/auto/api中
1,
cocos2d_lua_bindings.xcodeproj下的auto文件夹里面添加生成的.hpp和.cpp文件
2,
Classes下添加导出的.hpp 和 .cpp文件及其对应的.h 和 .cpp文件
3,
TARGETS Mac下:
Header Search Paths中添加搜索路径：
$(SRCROOT)/../ClassesSRCROOT指的就是Classes
<7>注册C++代码到lua中，并且运行xcode.
2.使用C++导出的lua文件
编辑AppDelegate.cpp，包含lua_myclass_auto.hpp头文件，在
LuaEngine* engine = LuaEngine::getInstance();
后面加入
LuaStack* stack = engine->getLuaStack();
stack->setXXTEAKeyAndSign("2dxLua", strlen("2dxLua"), "XXTEA", strlen("XXTEA"));
register_all_cocos2dx_custom(engine->getLuaStack()->getLuaState());
<8>cocos code ide 下：
1.构建模拟器
2.模拟器构建成功
3.浏览选择刚构建的模拟器
4.新的模拟器路径
5.运行成功
local function main()
collectgarbage("collect")
-- avoid memory leak
collectgarbage("setpause", 100)
collectgarbage("setstepmul", 5000)
cc.FileUtils:getInstance():addSearchPath("src")
cc.FileUtils:getInstance():addSearchPath("res")
cc.Director:getInstance():getOpenGLView():setDesignResolutionSize(480, 320, 0)
local var = cc.CustomClass:create():helloMsg()
print(var)
--create scene
local scene = require("GameScene")
local gameScene = scene.create()
gameScene:playBgMusic()
if cc.Director:getInstance():getRunningScene() then
cc.Director:getInstance():replaceScene(gameScene)
else
cc.Director:getInstance():runWithScene(gameScene)
end
end
搞定！！！
参考：
http://my.oschina.net/skyhacker2/blog/298397
http://www.cocos2d-x.org/wiki/Binding_Custom_Class_To_Lua_Runtime