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author | Pierre Frisch | 2011-12-22 07:25:50 -0800 |
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committer | Valerio Virgillito | 2012-01-27 11:18:17 -0800 |
commit | b89a7ee8b956c96a1dcee995ea840feddc5d4b27 (patch) | |
tree | 0f3136ab0ecdbbbed6a83576581af0a53124d6f1 /js/helper-classes/RDGE/src/core/script/objectManager.js | |
parent | 2401f05d1f4b94d45e4568b81fc73e67b969d980 (diff) | |
download | ninja-b89a7ee8b956c96a1dcee995ea840feddc5d4b27.tar.gz |
First commit of Ninja to ninja-internal
Signed-off-by: Valerio Virgillito <rmwh84@motorola.com>
Diffstat (limited to 'js/helper-classes/RDGE/src/core/script/objectManager.js')
-rw-r--r-- | js/helper-classes/RDGE/src/core/script/objectManager.js | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/js/helper-classes/RDGE/src/core/script/objectManager.js b/js/helper-classes/RDGE/src/core/script/objectManager.js new file mode 100644 index 00000000..0bb8b91b --- /dev/null +++ b/js/helper-classes/RDGE/src/core/script/objectManager.js | |||
@@ -0,0 +1,72 @@ | |||
1 | /* <copyright> | ||
2 | This file contains proprietary software owned by Motorola Mobility, Inc.<br/> | ||
3 | No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/> | ||
4 | (c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved. | ||
5 | </copyright> */ | ||
6 | |||
7 | /* generic handle-based object manager | ||
8 | */ | ||
9 | objectManager = function() { | ||
10 | this.guidCounter = 0; | ||
11 | this.objects = []; | ||
12 | this.numObjects = 0; | ||
13 | this.freelist = []; | ||
14 | |||
15 | this.reset = function() { | ||
16 | this.objects = []; | ||
17 | this.freelist = []; | ||
18 | this.guidCounter = 0; | ||
19 | } | ||
20 | |||
21 | // validHandle | ||
22 | this.validHandle = function(h) { | ||
23 | return this.handleToIndex(h) != -1; | ||
24 | } | ||
25 | |||
26 | // handleToIndex | ||
27 | this.handleToIndex = function(h) { | ||
28 | var index = ( h >> 16 ) & 0xFFFF; | ||
29 | if( this.objects[index] != null && h == this.objects[index].handle ) { | ||
30 | return index; | ||
31 | } | ||
32 | return -1; | ||
33 | } | ||
34 | |||
35 | // handleToObject | ||
36 | this.handleToObject = function(h) { | ||
37 | var index = this.handleToIndex( h ); | ||
38 | if( index != -1 ) { | ||
39 | return this.objects[index]; | ||
40 | } | ||
41 | return null; | ||
42 | } | ||
43 | |||
44 | // add object | ||
45 | this.addObject = function(ob) { | ||
46 | var index = this.objects.length; | ||
47 | |||
48 | if( this.freelist.length > 0 ) { | ||
49 | index = this.freelist.pop(); | ||
50 | } | ||
51 | if( ++this.guidCounter >= 0xFFFF ) { | ||
52 | // wrap the counter, zero is reserved for invalid handles. | ||
53 | this.guidCounter = 1; | ||
54 | } | ||
55 | ob.handle = ( index << 16 | ++this.guidCounter ); | ||
56 | this.objects[index] = ob; | ||
57 | |||
58 | return ob.handle; | ||
59 | } | ||
60 | |||
61 | // remove object | ||
62 | this.removeObject = function(h) { | ||
63 | var index = this.handleToIndex( h ); | ||
64 | if( index != -1 ) { | ||
65 | if( this.objects[index].onremove != undefined ) { | ||
66 | this.objects[index].onremove(); | ||
67 | } | ||
68 | this.objects[index] = null; | ||
69 | this.freelist.push(index); | ||
70 | } | ||
71 | } | ||
72 | } \ No newline at end of file | ||