/libs/cocos2d/CCPropertyAction.m
Objective C | 75 lines | 31 code | 20 blank | 24 comment | 1 complexity | 6c6544db627349a37794310d49c0d6fa MD5 | raw file
Possible License(s): Apache-2.0
1/* 2 * cocos2d for iPhone: http://www.cocos2d-iphone.org 3 * 4 * Copyright 2009 lhunath (Maarten Billemont) 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 * 24 */ 25 26#import "CCPropertyAction.h" 27 28 29@implementation CCPropertyAction 30 31+ (id)actionWithDuration:(ccTime)aDuration key:(NSString *)aKey from:(float)aFrom to:(float)aTo { 32 33 return [[[[self class] alloc] initWithDuration:aDuration key:aKey from:aFrom to:aTo] autorelease]; 34} 35 36 37- (id)initWithDuration:(ccTime)aDuration key:(NSString *)key from:(float)from to:(float)to { 38 39 if ((self = [super initWithDuration:aDuration])) { 40 41 key_ = [key copy]; 42 to_ = to; 43 from_ = from; 44 45 } 46 47 return self; 48} 49 50- (void) dealloc 51{ 52 [key_ release]; 53 [super dealloc]; 54} 55 56- (void)startWithTarget:aTarget 57{ 58 59 [super startWithTarget:aTarget]; 60 61 delta_ = to_ - from_; 62} 63 64- (void) update:(ccTime) dt { 65 66 [target setValue:[NSNumber numberWithFloat:to_ - delta_ * (1 - dt)] forKey:key_]; 67} 68 69- (CCIntervalAction *) reverse 70{ 71 return [[self class] actionWithDuration:duration key:key_ from:to_ to:from_]; 72} 73 74 75@end