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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 <Foundation/Foundation.h>
+#import "CCActionInterval.h"
+
+/** CCActionTween
+ 
+ CCActionTween is an action that lets you update any property of an object.
+ For example, if you want to modify the "width" property of a target from 200 to 300 in 2 senconds, then:
+ 
+        id modifyWidth = [CCActionTween actionWithDuration:2 key:@"width" from:200 to:300];
+        [target runAction:modifyWidth];
+ 
+
+ Another example: CCScaleTo action could be rewriten using CCPropertyAction:
+ 
+        // scaleA and scaleB are equivalents
+        id scaleA = [CCScaleTo actionWithDuration:2 scale:3];
+        id scaleB = [CCActionTween actionWithDuration:2 key:@"scale" from:1 to:3];
+
+ 
+ @since v0.99.2
+ */
+@interface CCActionTween : CCActionInterval
+{
+        NSString                *key_;
+    
+        float                   from_, to_;
+        float                   delta_;
+}
+
+/** creates an initializes the action with the property name (key), and the from and to parameters. */
++ (id)actionWithDuration:(ccTime)aDuration key:(NSString *)key from:(float)from to:(float)to;
+
+/** initializes the action with the property name (key), and the from and to parameters. */
+- (id)initWithDuration:(ccTime)aDuration key:(NSString *)key from:(float)from to:(float)to;
+    
+@end