gistfile1.m

//
//  AMProgressSpinnerComponent.m
//  AftermathCore
//
//  Created by Zane Claes on 8/29/13.
//  Copyright (c) 2013 inZania LLC. All rights reserved.
//

#import "AMProgressSpinnerComponent.h"
#import "AMAssetManager.h"
#import "CCSprite+Aftermath.h"
#import "cocos2d.h"

#define kRadius 40

@implementation AMProgressSpinnerComponent

- (void)setOpacity:(GLubyte)opacity {
  [super setOpacity:opacity];
  for(CCSprite *node in self.children) {
    node.opacity = opacity;
  }
}

- (BOOL)isSpinning {
  return self.numberOfRunningActions>0;
}

- (void)spin {
  if([self isSpinning]) {
    return;
  }
  float per = M_PI*2/self.children.count;
  NSArray *children = self.children.getNSArray?:@[];
  [self stopAllActions];
  
  for(NSInteger x=0; x<children.count; x++) {
    CCSprite *sprite = children[x];
    [sprite stopAllActions];
    sprite.position = ccp(0,0);
    float radians = x * per;
    
    float radius = kRadius - sprite.contentSize.width/2;
    float yPos = sinf(radians) * radius;
    float xPos = cosf(radians) * radius;
    id action = [CCMoveTo actionWithDuration:0.2 position:ccp(xPos, yPos)];
    [sprite runAction:action];
    
    action = [CCRotateBy actionWithDuration:0.05 angle:-M_PI*2];
    action = [CCRepeatForever actionWithAction:action];
    [sprite runAction:action];
  }
  
  id action = [CCRotateBy actionWithDuration:0.05 angle:M_PI*2];
  action = [CCRepeatForever actionWithAction:action];
  [self runAction:action];
}

- (void)addOrb:(NSString*)color {
  NSString *fn = [NSString stringWithFormat:@"orb_%@",color];
  CCSprite *sprite = [CCSprite spriteWithAsset:fn];
  [self addChild:sprite];
}

- (void)prepareForReuse {
  self.opacity = 0xFF;
  [self stopAllActions];
  [self removeFromParent];
}

- (id)init {
  if((self = [super init])) {
    [self addOrb:@"white"];
    [self addOrb:@"green"];
    [self addOrb:@"blue"];
    [self addOrb:@"red"];
    [self addOrb:@"black"];
    
    self.contentSize = CGSizeMake(kRadius*2, kRadius*2);
  }
  return self;
}

static AMProgressSpinnerComponent *_sharedSpinner;
+ (id)sharedSpinner {
  if(!_sharedSpinner) {
    _sharedSpinner = [AMProgressSpinnerComponent node];
  }
  return _sharedSpinner;
}

@end