Softwareentwicklung in C++ - ASC

308 10. Memory – ein kleines Beispiel
59 void MemoryGameboard : : d i s p l a y a b l e R e g i s t e r e d (
60 SimpleOutputHandling &handler )
61 {
62 // already r e g i s t e r e d with some handler , no f u r t h e r
63 // setup necessary
64 i f ( r o w h e a d i n g d i s p l a y a b l e s )
65 return ;
66
67 uint32 num displayables = ( num rows ∗ num cols ) + // cards
68 num rows + 1 + // EOL elements
69 num rows + 1 + // c o l headings
70 num cols ; // row headings
71 r o w h e a d i n g d i s p l a y a b l e s = new Vector (
72 num cols , DisplayableDeletor : : getInstance ( ) ) ;
73 c o l h e a d i n g d i s p l a y a b l e s = new Vector (
74 num rows + 1, DisplayableDeletor : : getInstance ( ) ) ;
75 e o l d i s p l a y a b l e s = new Vector (
76 num rows + 1, DisplayableDeletor : : getInstance ( ) ) ;
77 c o n t a i n e r o u t p u t c o n t e x t = handler . getOutputContextClone ( ) ;
78 container output handling = new SimpleOutputHandling (
79 num displayables , ∗ c o n t a i n e r o u t p u t c o n t e x t ) ;
80
81 // j u s t because some compilers have a wrong treatment f o r
82 // v a r i a b l e s in c o n t r o l statements . . .
83 uint32 row count = 0;
84 uint32 col count = 0;
85
86 // generate the top l i n e with the column headings and
87 // r e g i s t e r i t
88 IntDisplayable ∗ heading = 0;
89 TextDisplayable ∗ text = 0;
90 // a space needs to be the f i r s t element o f the headings
91 text = new TextDisplayable ( ” ” ) ;
92 c o l h e a d i n g d i s p l a y a b l e s −>setElementAt ( 0 , text ) ;
93 container output handling −>addDisplayable (∗ text ) ;
94 // the r e s t of the heading l i n e contains the consecutive
95 // numbers of the columns
96 for ( col count = 1 ; col count setElementAt ( c o l count , heading ) ;
100 container output handling −>addDisplayable (∗ heading ) ;
101 }
102 // an e o l i s placed at the end o f the l i n e
103 text = new TextDisplayable ( ”\n” ) ;
104 e o l d i s p l a y a b l e s −>setElementAt ( 0 , text ) ;
105 container output handling −>addDisplayable (∗ text ) ;
106 // now f o r each row :
107 // ( 1 ) generate the row heading and r e g i s t e r i t
108 // ( 2 ) r e g i s t e r a l l cards in the row .
109 // ( 3 ) generate an EOL d i s p l a y a b l e and r e g i s t e r i t
110 for ( row count = 0 ; row count < num rows ; row count++)
111 {
112 heading = new IntDisplayable ( row count + 1 ) ;
113 r o w h e a d i n g d i s p l a y a b l e s −>setElementAt ( row count , heading ) ;
114 container output handling −>addDisplayable (∗ heading ) ;
115 for ( col count = 0 ; col count < num cols ; c o l c o unt++)
116 {
117 // not very e f f i c i e n t but e a s i e r to read
118 container output handling −>addDisplayable (
119 ∗dynamic cast(
120 internalGetCard ( row count , c o l count ) ) ) ;
121 }
122 text = new TextDisplayable ( ”\n” ) ;
123 e o l d i s p l a y a b l e s −>setElementAt ( row count + 1, text ) ;