1
#import
"
AppController.h
"
2
#import
"
BigLetterView.h
"
3
4
#define
MAX_COUNT (100)
5
#define
COUNT_STEP (5)
6
7
@implementation AppController
8
9
-
(id)init
10
{
11
[super init];
12
13
letters
=
[[NSArray alloc] initWithObjects:
@"
a
"
,
@"
s
"
,
@"
d
"
,
@"
f
"
,
@"
j
"
,
@"
k
"
,
@"
l
"
,
@"
;
"
, nil];
14
srandom(time(NULL));
15
return
self;
16
}
17
18
-
(
void
)awakeFromNib
19
{
20
[self showAnotherLetter];
21
}
22
23
-
(
void
)resetCount
24
{
25
[self willChangeValueForKey:
@"
count
"
];
26
count
=
0
;
27
[self didChangeValueForKey:
@"
count
"
];
28
}
29
30
-
(
void
)incrementCount
31
{
32
[self willChangeValueForKey:
@"
count
"
];
33
count
=
count
+
COUNT_STEP;
34
if
(count
>
MAX_COUNT)
35
{
36
count
=
MAX_COUNT;
37
}
38
[self didChangeValueForKey:
@"
count
"
];
39
}
40
41
-
(
void
)showAnotherLetter
42
{
43
int
x
=
lastIndex;
44
while
(x
==
lastIndex)
45
{
46
x
=
random()
%
[letters count];
47
}
48
lastIndex
=
x;
49
[outLetterView setString:[letters objectAtIndex:x]];
50
51
[self resetCount];
52
}
53
54
-
(IBAction)stopGo:(id)sender
55
{
56
if
(timer
==
nil)
57
{
58
NSLog(
@"
Starting
"
);
59
60
timer
=
[[NSTimer scheduledTimerWithTimeInterval:
1
target:self selector:@selector(checkThem) userInfo:nil repeats:YES] retain];
61
}
62
else
63
{
64
NSLog(
@"
Stopping
"
);
65
[timer invalidate];
66
[timer release];
67
timer
=
nil;
68
}
69
}
70
71
-
(
void
)checkThem:(NSTimer
*
)aTimer
72
{
73
if
([[inLetterView
string
] isEqual:[outLetterView
string
]])
74
{
75
[self showAnotherLetter];
76
}
77
if
(count
==
MAX_COUNT)
78
{
79
NSBeep();
80
[self resetCount];
81
}
82
else
83
{
84
[self incrementCount];
85
}
86
87
}
88
89
@end
转载于:https://www.cnblogs.com/zhtf2014/archive/2011/03/05/1971564.html
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