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NSInteger angle = arc4random_uniform(90) - 45;

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// In interface definition
CGPoint *vertices;
CGPoint *coordinates;

// In drawing function
glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, vertices);
glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, 0, coordinates);

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// Needed to work with attributed strings
#import <CoreText/CoreText.h>

// Somewhere in drawing code, that renders string:

NSMutableParagraphStyle *paragraphStyle = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease];
paragraphStyle.alignment = alignments[hAlignment];
paragraphStyle.lineBreakMode = linebreaks[lineBreakMode];

NSDictionary *attributes = @{

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-(void) startWithTarget:(CCNode *)aTarget
{
    [super startWithTarget:aTarget];
    
    NSAssert([self.target isKindOfClass:[CCNode class]], @"Target is not CCNode");
    
    startAngle_ = [(CCNode *)self.target rotation];
    diffAngle_ = dstAngle_ - startAngle_;
}

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-(void) startWithTarget:(CCNode *)aTarget
{
    [super startWithTarget:aTarget];
    startAngle_ = [self.target rotation];
    diffAngle_ = dstAngle_ - startAngle_;
}

-(void) update: (ccTime) t
{
    [self.target setRotation: startAngle_ + diffAngle_ * t];

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- (void)update:(ccTime)t
{
    NSAssert([_target isKindOfClass:[CCNode class]], @"Target is not CCNode");

    // XXX: shall I add % 360
    if (_angleX == _angleY)
        [(CCNode *)_target setRotation:_startAngleX + _angleX * t];
    else
    {
        [_target setRotationX:(_startAngleX + _angleX * t)];

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-(void) update: (ccTime) t
{
    // XXX: shall I add % 360
    if (_angleX == _angleY)
        [_target setRotation:_startAngleX + _angleX * t];
    else
    {
        [_target setRotationX:(_startAngleX + _angleX * t)];
        [_target setRotationY:(_startAngleY + _angleY * t)];
    }

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/*
 * HelloWorldAVR.c
 *
 * Created: 03.06.2015 18:51:15
 *  Author: Dmitry Victorov
 */

#define F_CPU    1000000UL  // ATmega16 Internal clock frequency

#include <stdbool.h>