/libs/cocos2d/CCPropertyAction.m

http://github.com/kstenerud/ObjectAL-for-iPhone · Objective C · 75 lines · 31 code · 20 blank · 24 comment · 1 complexity · 6c6544db627349a37794310d49c0d6fa MD5 · raw file

  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. #import "CCPropertyAction.h"
  26. @implementation CCPropertyAction
  27. + (id)actionWithDuration:(ccTime)aDuration key:(NSString *)aKey from:(float)aFrom to:(float)aTo {
  28. return [[[[self class] alloc] initWithDuration:aDuration key:aKey from:aFrom to:aTo] autorelease];
  29. }
  30. - (id)initWithDuration:(ccTime)aDuration key:(NSString *)key from:(float)from to:(float)to {
  31. if ((self = [super initWithDuration:aDuration])) {
  32. key_ = [key copy];
  33. to_ = to;
  34. from_ = from;
  35. }
  36. return self;
  37. }
  38. - (void) dealloc
  39. {
  40. [key_ release];
  41. [super dealloc];
  42. }
  43. - (void)startWithTarget:aTarget
  44. {
  45. [super startWithTarget:aTarget];
  46. delta_ = to_ - from_;
  47. }
  48. - (void) update:(ccTime) dt {
  49. [target setValue:[NSNumber numberWithFloat:to_ - delta_ * (1 - dt)] forKey:key_];
  50. }
  51. - (CCIntervalAction *) reverse
  52. {
  53. return [[self class] actionWithDuration:duration key:key_ from:to_ to:from_];
  54. }
  55. @end