C++ 用于获取枚举值的名字

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本文深入探讨了Unity3D和Unreal Engine两大游戏引擎的使用技巧，包括动画、3D空间视频、AR特效、音频处理等核心技术。详细介绍了如何利用这些工具进行高效的游戏开发。

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template 
<class Child>

02class 
EnumBase  

03{ 

04protected:

05    //typedef typename Child::Et Et;

06    struct
EnumProperty 

07    { 

08        const
char * mName; 

09        int
mEt; 

10    }; 

11  

12public:

13  

14    static
int toEnum(const
char * name) 

15    { 

16        int
size = 0; 

17        const
EnumProperty * pP = Child::getEnumPropertys(size); 

18        for(int
iter = 0;iter < size ; ++ iter) 

19        {

20            if(strcmp(pP[iter].mName,name) == 0)

21                return
pP[iter].mEt; 

22        }

23        return
0; 

24    } 

25  

26    static
const char
* toString(int
et) 

27    { 

28        int
size = 0; 

29        const
EnumProperty * pP = Child::getEnumPropertys(size); 

30        for(int
iter = 0;iter < size ; ++ iter) 

31        {

32            if(pP[iter].mEt == et)

33                return
pP[iter].mName; 

34        }

35        return
0; 

36    } 

37}; 

38  

39#define TOSTRING(t) #t 

40#define MAP_TO_STRING(ot)   TOSTRING(ot),ot

41  

42class 
DamageType : public 
EnumBase<DamageType> 

43{ 

44public:

45    enum
Et{ 

46        Wood = 0x01,

47        Stone = 0x02,

48        Metal = 0x04,

49        Ice = 0x08,

50        Other = 0x10,

51        DamageAdditionEnd = 0x20,

52    }; 

53    struct
x{}; 

54  

55    static
const EnumProperty* getEnumPropertys(int
&size) 

56    { 

57        const
static EnumProperty __[] =

58        {

59            {MAP_TO_STRING(Wood)},

60            {MAP_TO_STRING(Stone)},

61            {MAP_TO_STRING(Metal)},

62            {MAP_TO_STRING(Ice)},

63            {MAP_TO_STRING(Other)},

64        };

65  

66        size =
sizeof(__)/sizeof(__[0]);

67        return
__; 

68    } 

69}; 

70int 
main() 

71{    

72    printf("%d\n",DamageType::toEnum("Wood"));

73    printf("%d\n",DamageType::toEnum("Stone"));

74    printf("%d\n",DamageType::toEnum("Metal"));

75    printf("%d\n",DamageType::toEnum("Ice"));

76    printf("%d\n",DamageType::toEnum("Other"));

77  

78    printf("%s\n",DamageType::toString(DamageType::Wood));

79    printf("%s\n",DamageType::toString(DamageType::Stone));

80    printf("%s\n",DamageType::toString(DamageType::Metal));

81    printf("%s\n",DamageType::toString(DamageType::Ice));

82    printf("%s\n",DamageType::toString(DamageType::Other));

83    return
0; 

84}