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/*
* cocos2d for iPhone: http://www.cocos2d-iphone.org
*
* Copyright 2009 lhunath (Maarten Billemont)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#import "CCActionTween.h"
@implementation CCActionTween
+ (id)actionWithDuration:(ccTime)aDuration key:(NSString *)aKey from:(float)aFrom to:(float)aTo {
return [[[[self class] alloc] initWithDuration:aDuration key:aKey from:aFrom to:aTo] autorelease];
}
- (id)initWithDuration:(ccTime)aDuration key:(NSString *)key from:(float)from to:(float)to {
if ((self = [super initWithDuration:aDuration])) {
key_ = [key copy];
to_ = to;
from_ = from;
}
return self;
}
- (void) dealloc
{
[key_ release];
[super dealloc];
}
- (void)startWithTarget:aTarget
{
[super startWithTarget:aTarget];
delta_ = to_ - from_;
}
- (void) update:(ccTime) dt
{
[target_ setValue:[NSNumber numberWithFloat:to_ - delta_ * (1 - dt)] forKey:key_];
}
- (CCActionInterval *) reverse
{
return [[self class] actionWithDuration:duration_ key:key_ from:to_ to:from_];
}
@end
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