使用SWIG创建swc之二(C++类的调用)
同学们下午好, 在前一篇教程中我们已经了解了基本的SWIG创建SWC的过程, 今天我捣鼓了大半天研究了如何调用C++的类, 接下来说说过程吧.
首先编写C++类, 分别是example.h和example.cpp, 如下:
/**example.h*/ class TestCC { public: TestCC(double, double); double x, y; virtual double add(void); virtual void set(double, double); void copyTo(TestCC*); };
#include "example.h" /**example.cpp*/ TestCC::TestCC(double v1, double v2) { x = v1; y = v2; } void TestCC::copyTo(TestCC* t) { t->x = x; t->y = y; } double TestCC::add(void) { return x+y; } void TestCC::set(double v1, double v2) { x = v1; y = v2; }
代码很简单, 相信不需要怎么说明了吧.
接下来就是打包了. 我们需要改一下swig的接口文件, 就像下面那样:
#ifdef SWIG %module AddExample %{ #include "example.h" %} %include "example.h" #else #include "example.h" #endif
相应的MakeFile文件也做相应的修改:
all: check @echo "-------- PassingData --------" @echo "-> Generate SWIG wrappers around the functions in the library" "$(FLASCC)/usr/bin/swig" -c++ -as3 -module AddExample -outdir . -ignoremissing -o AddExample_wrapper.cpp example.i @echo "-> Compile the SWIG wrapper to ABC" $(AS3COMPILERARGS) -abcfuture -AS3 -import $(call nativepath,$(FLASCC)/usr/lib/builtin.abc) -import $(call nativepath,$(FLASCC)/usr/lib/playerglobal.abc) AddExample.as @echo "-> Compile the library into a SWC" "$(FLASCC)/usr/bin/g++" $(BASE_CFLAGS) AddExample.abc AddExample_wrapper.cpp example.cpp main.cpp -emit-swc=sample.add -o add.swc include ../Makefile.common clean: rm -f *_wrapper.c *.swc *.as *.abc
修改了什么地方呢? 只是在第4行加了一个" -c++"而已啦, 不加的话会报一个“Warning 301: class keyword used, but not in C++ mode”的错误, 所以同学们加上吧.
接下来执行make命令吧, 看看是不是生成了add.swc文件了呢?
最后还是在AS中进行测试:
package { import flash.display.Sprite; import sample.add.CModule; public class UnitTest extends Sprite { public function UnitTest() { CModule.startAsync(this); var a:TestCC = TestCC.create(10, 10); trace(a.add()); a.set(20, 20); trace(a.add()); var t:TestCC = TestCC.create(10, 10); t.copyTo(a.swigCPtr); trace(a.add()); } } }
猜猜输出是什么? 是的, 如你们所预期的! 实验成功
20 40 20
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