Question

这是一大堆代码。评论应该非常有用。我想要做的是迭代一个CGRects的NSArray（包裹在NSValues中）并检查我们当前正在触摸的地方是否在其中一个CGRects中。

当我运行此代码时（注意for循环中的NSLog语句），它所做的就是说当前循环值为0.此外，当我触摸CGRects附近的地方时它会这样做应该。我的评论解释了我是如何创建CGRect的。谢谢！

#import "GameUI.h"


@implementation GameUI // This is a scene with just 1 layer on it.

+(id) scene
{
 // 'scene' is an autorelease object.
 CCScene *scene = [CCScene node];

 // 'layer' is an autorelease object.
 GameUI *layer = [GameUI node];

 // add layer as a child to scene
 [scene addChild: layer];

 // return the scene
 return scene;
}

// initialize your instance here
-(id) init
{
 if( (self=[super initWithColor:ccc4(255,255,255,255)] )) {

  // enable touches
  self.isTouchEnabled = YES;

  // unlock touching ingredients to start with
  touchLocked = NO;

  // attach nothing
  attachedSprite = -1;

  winSize = [CCDirector sharedDirector].winSize;

  // Build the UI
   // Counter
    CCSprite *counter = [CCSprite spriteWithFile:@"counter.png" 
              rect:CGRectMake(0, 0, 480, 320)];
    counter.position = ccp(winSize.width/2, winSize.height/2);
    [self addChild:counter]; 

  // Let's hardcode some hitbox bounds.
  // I got these values by using Photoshop's info panel and simply using the rectangular marquee tool.
  // That gave me the origin point and then the two width+height values.
  breadTouchbox = CGRectMake(241, 12, 71, 61);
  onionTouchbox = CGRectMake(166, 11, 63, 53);
  hamTouchbox = CGRectMake(115, 60, 56, 58);
  cheeseTouchbox = CGRectMake(108, 128, 74, 74);
  tomatoTouchbox = CGRectMake(47, 162, 52, 47);
  lettuceTouchbox = CGRectMake(4, 78, 70, 77);
  ketchupTouchbox = CGRectMake(2, 166, 38, 69);
  mayoTouchbox = CGRectMake(6, 242, 31, 75);

  NSValue *breadTouchboxValue = [NSValue valueWithCGRect:breadTouchbox];
  NSValue *onionTouchboxValue = [NSValue valueWithCGRect:onionTouchbox];
  NSValue *hamTouchboxValue = [NSValue valueWithCGRect:hamTouchbox];
  NSValue *cheeseTouchboxValue = [NSValue valueWithCGRect:cheeseTouchbox];
  NSValue *tomatoTouchboxValue = [NSValue valueWithCGRect:tomatoTouchbox];
  NSValue *lettuceTouchboxValue = [NSValue valueWithCGRect:lettuceTouchbox];
  NSValue *ketchupTouchboxValue = [NSValue valueWithCGRect:ketchupTouchbox];
  NSValue *mayoTouchboxValue = [NSValue valueWithCGRect:mayoTouchbox];

  // Put them in the array
  touchboxArray = [[NSArray alloc] initWithObjects:breadTouchboxValue, onionTouchboxValue, hamTouchboxValue, cheeseTouchboxValue, tomatoTouchboxValue, lettuceTouchboxValue, ketchupTouchboxValue, mayoTouchboxValue, nil];

  // Create the sprites we're going to drag around. Spawn them off screen somewhere.
  breadSprite = [CCSprite spriteWithFile:@"breadslice.png" rect:CGRectMake(0,0,-200,-200)];
  onionSprite = [CCSprite spriteWithFile:@"onionslices.png" rect:CGRectMake(0,0,-200,-200)];
  hamSprite = [CCSprite spriteWithFile:@"hamslice.png" rect:CGRectMake(0,0,-200,-200)];
  cheeseSprite = [CCSprite spriteWithFile:@"cheeseslices.png" rect:CGRectMake(0,0,-200,-200)];
  tomatoSprite = [CCSprite spriteWithFile:@"tomatoslices.png" rect:CGRectMake(0,0,-200,-200)];
  lettuceSprite = [CCSprite spriteWithFile:@"lettuceslice.png" rect:CGRectMake(0,0,-200,-200)];
  ketchupSprite = [CCSprite spriteWithFile:@"ketchupsplurge.png" rect:CGRectMake(0,0,-200,-200)];
  mayoSprite = [CCSprite spriteWithFile:@"mayosplurge.png" rect:CGRectMake(0,0,-200,-200)];

  // Make sure you add them to this layer.
  [self addChild:breadSprite];
  [self addChild:onionSprite];
  [self addChild:hamSprite];
  [self addChild:cheeseSprite];
  [self addChild:tomatoSprite];
  [self addChild:lettuceSprite];
  [self addChild:ketchupSprite];
  [self addChild:mayoSprite];

  // Put them in the array
  spriteArray = [[NSArray alloc] initWithObjects:breadSprite, onionSprite, hamSprite, cheeseSprite, tomatoSprite, lettuceSprite, ketchupSprite, mayoSprite, nil];
 }
 return self;
}

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
 // Set the currently touched location to LOCATION.
    UITouch *myTouch = [touches anyObject];
    CGPoint location = [myTouch locationInView:[myTouch view]];
    location = [[CCDirector sharedDirector] convertToGL:location];

 // NSLog(@"%@", NSStringFromCGPoint(location));

 // Check for a touch in any of the touchboxes. If yes, break out of the loop so you preserve arrayCount's value.
 int arrayCount = 0;
 NSAutoreleasePool *pool =  [[NSAutoreleasePool alloc] init];
 for (int i = 0; i < [touchboxArray count]; i++) {
  CGRect rect = [[touchboxArray objectAtIndex:i] CGRectValue];
  if (CGRectContainsPoint(rect, location)) {
   NSLog(@"The value of arrayCount is %i", arrayCount);
   break;
  }
 }
 [pool release];

 // Now use that value to find the appropriate sprite and set it up for finger attachment.
 // Remember to lock further touches [DO WE EVEN NEED TOUCHLOCKED? CAN'T SWIPE THROUGH SHIT ANYMORE]
 //attachedSprite = arrayCount;

}

-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
 // Set the currently touched location to LOCATION.
    UITouch *myTouch = [touches anyObject];
    CGPoint location = [myTouch locationInView:[myTouch view]];
    location = [[CCDirector sharedDirector] convertToGL:location];

 // Make a holder sprite.
 CCSprite *currentIngredient;

 // Check and see if there is a sprite to be attached. If there is, attach it to the touch location.
 if (attachedSprite != -1) {
  currentIngredient = [spriteArray objectAtIndex:attachedSprite];
  currentIngredient.position = location;
 }
}

- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
 // Remove any attachment.
 attachedSprite = -1;
    }

-(void)ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
 // Remove any attachment.
 attachedSprite = -1;
}
@end

Answer 1

@deanWombourne

在评论中提供的答案

行

NSLog(@"The value of arrayCount is %i", arrayCount);

应该是

NSLog(@"The value of arrayCount is %i", i);

为什么触摸时我的CGRects没有正确注册？

1 个答案: