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authorStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
committerStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
commit9cd57b731ab1c666d4a1cb725538fdc137763d12 (patch)
tree5bac45ae5157a1cb10c6e45500cbf72789917980 /libs/cocos2d/CCParallaxNode.m
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Initial commit (version 0.2.1)
Diffstat (limited to 'libs/cocos2d/CCParallaxNode.m')
-rwxr-xr-xlibs/cocos2d/CCParallaxNode.m161
1 files changed, 161 insertions, 0 deletions
diff --git a/libs/cocos2d/CCParallaxNode.m b/libs/cocos2d/CCParallaxNode.m new file mode 100755 index 0000000..9d39cc8 --- /dev/null +++ b/libs/cocos2d/CCParallaxNode.m
@@ -0,0 +1,161 @@
1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2009-2010 Ricardo Quesada
5 * Copyright (c) 2011 Zynga Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 *
25 */
26
27#import "CCParallaxNode.h"
28#import "Support/CGPointExtension.h"
29#import "Support/ccCArray.h"
30
31@interface CGPointObject : NSObject
32{
33 CGPoint ratio_;
34 CGPoint offset_;
35 CCNode *child_; // weak ref
36}
37@property (readwrite) CGPoint ratio;
38@property (readwrite) CGPoint offset;
39@property (readwrite,assign) CCNode *child;
40+(id) pointWithCGPoint:(CGPoint)point offset:(CGPoint)offset;
41-(id) initWithCGPoint:(CGPoint)point offset:(CGPoint)offset;
42@end
43@implementation CGPointObject
44@synthesize ratio = ratio_;
45@synthesize offset = offset_;
46@synthesize child=child_;
47
48+(id) pointWithCGPoint:(CGPoint)ratio offset:(CGPoint)offset
49{
50 return [[[self alloc] initWithCGPoint:ratio offset:offset] autorelease];
51}
52-(id) initWithCGPoint:(CGPoint)ratio offset:(CGPoint)offset
53{
54 if( (self=[super init])) {
55 ratio_ = ratio;
56 offset_ = offset;
57 }
58 return self;
59}
60@end
61
62@implementation CCParallaxNode
63
64@synthesize parallaxArray = parallaxArray_;
65
66-(id) init
67{
68 if( (self=[super init]) ) {
69 parallaxArray_ = ccArrayNew(5);
70 lastPosition = CGPointMake(-100,-100);
71 }
72 return self;
73}
74
75- (void) dealloc
76{
77 if( parallaxArray_ ) {
78 ccArrayFree(parallaxArray_);
79 parallaxArray_ = nil;
80 }
81 [super dealloc];
82}
83
84-(void) addChild:(CCNode*)child z:(NSInteger)z tag:(NSInteger)tag
85{
86 NSAssert(NO,@"ParallaxNode: use addChild:z:parallaxRatio:positionOffset instead");
87}
88
89-(void) addChild: (CCNode*) child z:(NSInteger)z parallaxRatio:(CGPoint)ratio positionOffset:(CGPoint)offset
90{
91 NSAssert( child != nil, @"Argument must be non-nil");
92 CGPointObject *obj = [CGPointObject pointWithCGPoint:ratio offset:offset];
93 obj.child = child;
94 ccArrayAppendObjectWithResize(parallaxArray_, obj);
95
96 CGPoint pos = self.position;
97 pos.x = pos.x * ratio.x + offset.x;
98 pos.y = pos.y * ratio.y + offset.y;
99 child.position = pos;
100
101 [super addChild: child z:z tag:child.tag];
102}
103
104-(void) removeChild:(CCNode*)node cleanup:(BOOL)cleanup
105{
106 for( unsigned int i=0;i < parallaxArray_->num;i++) {
107 CGPointObject *point = parallaxArray_->arr[i];
108 if( [point.child isEqual:node] ) {
109 ccArrayRemoveObjectAtIndex(parallaxArray_, i);
110 break;
111 }
112 }
113 [super removeChild:node cleanup:cleanup];
114}
115
116-(void) removeAllChildrenWithCleanup:(BOOL)cleanup
117{
118 ccArrayRemoveAllObjects(parallaxArray_);
119 [super removeAllChildrenWithCleanup:cleanup];
120}
121
122-(CGPoint) absolutePosition_
123{
124 CGPoint ret = position_;
125
126 CCNode *cn = self;
127
128 while (cn.parent != nil) {
129 cn = cn.parent;
130 ret = ccpAdd( ret, cn.position );
131 }
132
133 return ret;
134}
135
136/*
137 The positions are updated at visit because:
138 - using a timer is not guaranteed that it will called after all the positions were updated
139 - overriding "draw" will only precise if the children have a z > 0
140*/
141-(void) visit
142{
143// CGPoint pos = position_;
144// CGPoint pos = [self convertToWorldSpace:CGPointZero];
145 CGPoint pos = [self absolutePosition_];
146 if( ! CGPointEqualToPoint(pos, lastPosition) ) {
147
148 for(unsigned int i=0; i < parallaxArray_->num; i++ ) {
149
150 CGPointObject *point = parallaxArray_->arr[i];
151 float x = -pos.x + pos.x * point.ratio.x + point.offset.x;
152 float y = -pos.y + pos.y * point.ratio.y + point.offset.y;
153 point.child.position = ccp(x,y);
154 }
155
156 lastPosition = pos;
157 }
158
159 [super visit];
160}
161@end