Softwareentwicklung in C++ - ASC

272 10. Memory – ein kleines Beispiel
36
37
38 #e n d i f // simple argument handler h
10.2.7 MemoryCommandlineArgumentHandler
Da wir gerade das entsprechende Interface kennen gelernt haben, sehen wir
uns auch gleich die entsprechende Implementation an, die in unserem Spiel
Anwendung finden wird.
1 // memory commandline arg handler . h − s p e c i a l argument handler
2 // f o r the memory game
3
4 #ifndef memory commandline arg handler h
5 #define memory commandline arg handler h
6
7 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
8 /∗ The commandline argument handler f o r the memory game
9 ∗ I t i s implemented as a simple container that s t o r e s the number
10 ∗ o f rows and columns that are s e t via c a l l b a c k s from the
11 ∗ CommandlineHandling or a compatible c l a s s .
12 ∗/
13
14 class MemoryCommandlineArgumentHandler : public ArgumentHandler
15 {
16 protected :
17
18 /∗ The i n d i c e s of the number of rows and columns according to
19 ∗ the commandline s p e c i f i c a t i o n o f the game ( argv [ 0 ] = progname ,
20 ∗ argv [ 1 ] = rows , argv [ 2 ] = c o l s ) .
21 ∗/
22 static const uint32 ROW DEF INDEX = 1;
23 static const uint32 COL DEF INDEX = 2;
24
25 /∗ The number of rows of the gameboard
26 ∗/
27 uint32 num rows ;
28
29 /∗ The number of columns of the gameboard
30 ∗/
31 uint32 num cols ;
32
33 public :
34
35 /∗ Default constructor
36 ∗ I n i t i a l i z e s a l l v a r i a b l e s to 0
37 ∗/
38 MemoryCommandlineArgumentHandler ( ) :
39 num rows ( 0 ) , num cols ( 0) { }
40
41 /∗ Destructor
42 ∗ Just to make sure that there i s a v i r t u a l d e s t r u c t o r
43 ∗/
44 virtual ˜ MemoryCommandlineArgumentHandler ( ) { }
45
46 /∗ Callback f o r a n o t i f i c a t i o n according to the base i n t e r f a c e
47 ∗ I f everything i s ok t h i s c a l l b a c k w i l l be c a l l e d f o r two
48 ∗ arguments : The number of rows and the number o f columns .
49 ∗ According to the convention both arguments w i l l be passed
50 ∗ as p o i n t e r s to uint32 . See a l s o c l a s s CommandlineHandling
51 ∗ @param index The index of the argument in the commandline .