Angel 3.2
A 2D Game Prototyping Engine
Callback.h
1 
2 // Copyright (C) 2008-2013, Shane Liesegang
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4 //
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29 
30 #pragma once
31 #include <cstdio>
32 
34 
42 template <class ClassInstance, class ParamType>
44 {
45 public:
47  {
48  _function = 0;
49  }
50 
51  typedef void (ClassInstance::*FunctionPointer)(ParamType param);
52 
53  virtual void Execute(ParamType param) const
54  {
55  if (_function)
56  (_instance->*_function)(param);
57  else
58  printf("WARNING: No callback function specified!");
59  }
60 
61  void SetCallback( ClassInstance* instance,
62  FunctionPointer function)
63  {
64  _instance = instance;
65  _function = function;
66  }
67 
68  const ClassInstance* GetInstance()
69  {
70  return _instance;
71  }
72 
73  const FunctionPointer GetFunction()
74  {
75  return _function;
76  }
77 
78 private:
79  ClassInstance* _instance;
80  FunctionPointer _function;
81 };