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+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ *
+ * 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.
+ *
+ */
+
+
+#include <sys/time.h>
+#import <Foundation/Foundation.h>
+
+#import "ccTypes.h"
+
+enum {
+        //! Default tag
+        kCCActionTagInvalid = -1,
+};
+
+/** Base class for CCAction objects.
+ */
+@interface CCAction : NSObject <NSCopying>
+{
+        id                      originalTarget_;
+        id                      target_;
+        NSInteger       tag_;
+}
+
+/** The "target". The action will modify the target properties.
+ The target will be set with the 'startWithTarget' method.
+ When the 'stop' method is called, target will be set to nil.
+ The target is 'assigned', it is not 'retained'.
+ */
+@property (nonatomic,readonly,assign) id target;
+
+/** The original target, since target can be nil.
+ Is the target that were used to run the action. Unless you are doing something complex, like CCActionManager, you should NOT call this method.
+ @since v0.8.2
+*/
+@property (nonatomic,readonly,assign) id originalTarget;
+
+
+/** The action tag. An identifier of the action */
+@property (nonatomic,readwrite,assign) NSInteger tag;
+
+/** Allocates and initializes the action */
++(id) action;
+
+/** Initializes the action */
+-(id) init;
+
+-(id) copyWithZone: (NSZone*) zone;
+
+//! return YES if the action has finished
+-(BOOL) isDone;
+//! called before the action start. It will also set the target.
+-(void) startWithTarget:(id)target;
+//! called after the action has finished. It will set the 'target' to nil.
+//! IMPORTANT: You should never call "[action stop]" manually. Instead, use: "[target stopAction:action];"
+-(void) stop;
+//! called every frame with it's delta time. DON'T override unless you know what you are doing.
+-(void) step: (ccTime) dt;
+//! called once per frame. time a value between 0 and 1
+//! For example: 
+//! * 0 means that the action just started
+//! * 0.5 means that the action is in the middle
+//! * 1 means that the action is over
+-(void) update: (ccTime) time;
+
+@end
+
+/** Base class actions that do have a finite time duration.
+ Possible actions:
+   - An action with a duration of 0 seconds
+   - An action with a duration of 35.5 seconds
+ Infitite time actions are valid
+ */
+@interface CCFiniteTimeAction : CCAction <NSCopying>
+{
+        //! duration in seconds
+        ccTime duration_;
+}
+//! duration in seconds of the action
+@property (nonatomic,readwrite) ccTime duration;
+
+/** returns a reversed action */
+- (CCFiniteTimeAction*) reverse;
+@end
+
+
+@class CCActionInterval;
+/** Repeats an action for ever.
+ To repeat the an action for a limited number of times use the Repeat action.
+ @warning This action can't be Sequenceable because it is not an IntervalAction
+ */
+@interface CCRepeatForever : CCAction <NSCopying>
+{
+        CCActionInterval *innerAction_;
+}
+/** Inner action */
+@property (nonatomic, readwrite, retain) CCActionInterval *innerAction;
+
+/** creates the action */
++(id) actionWithAction: (CCActionInterval*) action;
+/** initializes the action */
+-(id) initWithAction: (CCActionInterval*) action;
+@end
+
+/** Changes the speed of an action, making it take longer (speed>1)
+ or less (speed<1) time.
+ Useful to simulate 'slow motion' or 'fast forward' effect.
+ @warning This action can't be Sequenceable because it is not an CCIntervalAction
+ */
+@interface CCSpeed : CCAction <NSCopying>
+{
+        CCActionInterval        *innerAction_;
+        float speed_;
+}
+/** alter the speed of the inner function in runtime */
+@property (nonatomic,readwrite) float speed;
+/** Inner action of CCSpeed */
+@property (nonatomic, readwrite, retain) CCActionInterval *innerAction;
+
+/** creates the action */
++(id) actionWithAction: (CCActionInterval*) action speed:(float)rate;
+/** initializes the action */
+-(id) initWithAction: (CCActionInterval*) action speed:(float)rate;
+@end
+
+@class CCNode;
+/** CCFollow is an action that "follows" a node.
+ 
+ Eg:
+        [layer runAction: [CCFollow actionWithTarget:hero]];
+ 
+ Instead of using CCCamera as a "follower", use this action instead.
+ @since v0.99.2
+ */
+@interface CCFollow : CCAction <NSCopying>
+{
+        /* node to follow */
+        CCNode  *followedNode_;
+        
+        /* whether camera should be limited to certain area */
+        BOOL boundarySet;
+        
+        /* if screensize is bigger than the boundary - update not needed */
+        BOOL boundaryFullyCovered;
+        
+        /* fast access to the screen dimensions */
+        CGPoint halfScreenSize;
+        CGPoint fullScreenSize;
+        
+        /* world boundaries */
+        float leftBoundary;
+        float rightBoundary;
+        float topBoundary;
+        float bottomBoundary;
+}
+
+/** alter behavior - turn on/off boundary */
+@property (nonatomic,readwrite) BOOL boundarySet;
+
+/** creates the action with no boundary set */
++(id) actionWithTarget:(CCNode *)followedNode;
+
+/** creates the action with a set boundary */
++(id) actionWithTarget:(CCNode *)followedNode worldBoundary:(CGRect)rect;
+
+/** initializes the action */
+-(id) initWithTarget:(CCNode *)followedNode;
+
+/** initializes the action with a set boundary */
+-(id) initWithTarget:(CCNode *)followedNode worldBoundary:(CGRect)rect;
+
+@end
+