CCActionUpdateWithBlock- A Cocos2D Action that uses a block to do the update - intention is to stop having to create a new class for making simple actions

CCActionUpdateWithBlock.h

/*
 * cocos2d for iPhone: http://www.cocos2d-iphone.org
 *
 * Copyright (c) 2015 Richard Groves
 *
 * 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 "cocos2d.h"

@class CCActionUpdateWithBlock;

/** A block called for each update on a CCActionUpdateWithBlock
 *
 *	@param action	The action this block is being run on. Useful to access the target or elapsed values for example (NB: watch out for actions run in CCActionSequence where elapsed is not updated)
 *	@param time	The time to update the action to reflect. Varies between 0 and 1 - not guaranteed to move in one direction or by fixed amounts. The block should be able to set the action to the specified time with no other information
 */
typedef void (^ActionBlock)(CCActionUpdateWithBlock* action, CCTime time);

/**
 This action calls the block at each update step with the elapsed time fraction (0-1) of the action
*/
@interface CCActionUpdateWithBlock : CCActionInterval <NSCopying>

/** @name Creating a Update with block Action */

/**
 *  Creates the action.
 *
 *  @param duration	Action duration.
 *  @param update	The block to be called at each step of the action.
 *
 *  @return New update with block action.
 */
+ (instancetype)actionWithDuration:(CCTime)duration update:(ActionBlock)update;

/**
 *  Initializes the action.
 *
 *  @param duration	Action duration.
 *  @param update	The block to be called at each step of the action.
 *
 *  @return New update with block action.
 */
- (instancetype)initWithDuration:(CCTime)duration update:(ActionBlock)update;

@end

CCActionUpdateWithBlock.m

/*
 * cocos2d for iPhone: http://www.cocos2d-iphone.org
 *
 * Copyright (c) 2015 Richard Groves
 *
 * 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 "CCActionUpdateWithBlock.h"


@interface CCActionUpdateWithBlock ()

@property (nonatomic, copy) ActionBlock updateBlock;

@end

@implementation CCActionUpdateWithBlock

+ (instancetype)actionWithDuration:(CCTime)duration update:(ActionBlock)update
{
	return [[self alloc] initWithDuration:duration updateBlock:update];
}

- (instancetype)initWithDuration:(CCTime)duration update:(ActionBlock)update
{
	self = [super initWithDuration:duration];
	if(self)
	{
		self.updateBlock = update;
	}
	
	return self;
}

- (void)update:(CCTime)time
{
	if (self.updateBlock)
		self.updateBlock(self, time);
}

- (id)copyWithZone:(NSZone*)zone
{
	CCAction *copy = [[[self class] allocWithZone:zone] initWithDuration:self.duration update:self.updateBlock];
	return copy;
}

- (CCActionInterval*)reverse
{
	if (self.updateBlock)
	{
		ActionBlock localBlock = self.updateBlock;
		return [[self class] actionWithDuration:self.duration
									update:^(CCActionUpdateWithBlock* action, CCTime time) { localBlock(action, 1-time); }];
	}
	else
	{
		return [[self class] actionWithDuration:_duration update:nil];
	}
}

@end

Updated some method names to be a bit less verbose.