Softwareentwicklung in C++ - ASC

18 ∗ card or both cards have already been s e t .
19 ∗/
20 const static uint8 CARD ONE SET = 0x01 ;
21 const static uint8 CARD TWO SET = 0x02 ;
22
23 protected :
24
25 /∗ I n t e r n a l s t a t u s f l a g s to f i n d out whether e i t h e r o f the
26 ∗ cards has been turned .
27 ∗/
28 const static uint8 CARD ONE TURNED = 0 x40 ;
29 const static uint8 CARD TWO TURNED = 0 x80 ;
30
31 /∗ Bitmasks f o r the card−s e t and the card−turned b i t s . Both
32 ∗ s t a t u s f l a g s are s e t in the same v a r i a b l e ( see below )
33 ∗/
34 const static uint8 CARD SET BITS = 0x03 ;
35 const static uint8 CARD TURN BITS = 0xc0 ;
36
37 /∗ I n t e r n a l v a r i a b l e to s t o r e the s t a t u s f l a g s . Only the
38 ∗ constants above may be s e t .
39 ∗/
40 uint8 c a r d s e t s t a t u s ;
41
42 /∗ Status v a r i a b l e s f o r rows and columns o f the two cards
43 ∗/
44 uint32 card1 row ;
45 uint32 c a r d 1 c o l ;
46 uint32 card2 row ;
47 uint32 c a r d 2 c o l ;
48 public :
49
50 /∗ Default constructor
51 ∗ Sets a l l s t a t u s v a r i a b l e s to t h e i r 0 s t a t e
52 ∗/
53 MemoryCardpair ( ) :
54 c a r d s e t s t a t u s ( 0 ) ,
55 card1 row ( 0 ) , c a r d 1 c o l ( 0 ) ,
56 card2 row ( 0 ) , c a r d 2 c o l ( 0) { }
57
58 /∗ Destructor
59 ∗ Just to make sure that a v i r t u a l d e s t r u c t o r e x i s t s
60 ∗/
61 virtual ˜ MemoryCardpair ( ) { }
62
10.2 Das DDD 303
63 /∗ Called a f t e r the f i r s t card was chosen . This method s t o r e s
64 ∗ the coordinates of the card and turns i t f r o n t s i d e up , i f
65 ∗ i t i s not already v i s i b l e . I t f u r t h e r s t o r e s , whether the
66 ∗ card was i n i t i a l l y f r o n t or back s i d e up to be able to
67 ∗ to perform an undo i f the pair does not match .
68 ∗ @param row The row of the card to turn .
69 ∗ @param c o l The column of the card to turn .
70 ∗ @param gameboard The gameboard to work on .
71 ∗/
72 virtual void turnCardOneFrontSideUp (
73 uint32 row , uint32 c o l , MemoryGameboard &gameboard ) ;
74
75 /∗ Analogous to the method above , j u s t f o r the second card
76 ∗ o f the pair .
77 ∗/
78 virtual void turnCardTwoFrontSideUp (
79 uint32 row , uint32 c o l , MemoryGameboard &gameboard ) ;
80
81 /∗ Returns the s t a t u s f l a g s that correspond to the b i t s that
82 ∗ determine which cards were s e t .
83 ∗ @return A b i t−combination of the two bitmask constants that