I am making a game in cocos2d , In that while updating score the old score values get on the label and the new value get overwritten. I m using following code to display the score,
LblScore = [CCLabel labelWithString:[NSString stringWithFormat:#"%d",score]
dimensions:CGSizeMake(100, 300)
alignment:UITextAlignmentCenter
fontName:#"Arial"
fontSize:32.0];
Because of this the score value are not shown and all things get massed up, If any one having idea how to update new score?
I don't completely understand what you are doing, because I can't see all of your code. But, I think what you want is this:
In your scene init:
// Both of these are class variables
score = 0;
LblScore = [CCLabel labelWithString:[NSString stringWithFormat:#"%d",score] dimensions:CGSizeMake(100, 300) alignment:UITextAlignmentCenter fontName:#"Arial" fontSize:32.0];
// Position the score, wherever you want it
[LblScore setPosition: CGPointMake(300, 240)];
When your score changes:
score++ // Not really, but your score changes somehow...
[LblScore setString: [NSString stringWithFormat:#"%d",score]];
This part would probably be in a setScore: or changeScore: method that changes your internal score value and changes the label at the same time.
The Solution for my problem is , I must have to define the label declaration in the -(id)init method, there on the value provided from any where there will be no overwriting of the values.
I've tried it and it's working, But still thanks to all who provided me a help
Related
I'm building a game using Apple's SpriteKit and SKPhysics that use squares that move around on the screen based on user input. I'm having an issue with collisions in that the squares will move out of place if they collide. For example, if all the blocks move to the right, any blocks that are on the same "row" need stack next to each other and not overlap or move position vertically. As of now, they will change their vertical direction. Here is my code:
self.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:self.size];
self.physicsBody.dynamic = YES;
self.physicsBody.allowsRotation = NO;
self.physicsBody.affectedByGravity = NO;
Are there any other settings that I'm missing?
The issue could be coming from your collisionBitMask category. In order to solve that, you need to first create categories for the blocks' physics bodies as follows:
struct PhysicsCategory {
static let None : UInt32 = 0
static let All : UInt32 = UInt32.max
static let block : UInt32 = 0b1
}
then set the blocks' settings to the following.
block.physicsBody?.categoryBitMask = PhysicsCategory.block
block.physicsBody?.collisionBitMask = PhysicsCategory.None
This should prevent the collision calculations from being automatically carried out by spritekit.
If you're moving your sprites via user inputs(i.g. SKAction's moveTo), then you're most likely not using physics to move your sprite. In this case, you should make the velocity of the physicsbody to 0- this will make the sprite completely rigid when it comes in contact with another object.
Try:
self.physicsBody.velocity = CGVectorMake(0, 0);
You should put this code inside your update loop.
and merry Christmas !
My question is about cocos2D, and how to do a translation in cocos2D. In "classic" objective C, I would have done :
myAnimation = [CABasicAnimation animationWithKeyPath:#"transform.translation.x"];
myAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
myAnimation.toValue = [NSNumber numberWithFloat:200.0f];
myAnimation.duration = t;
myAnimation.repeatCount = 1;
[myUIImageView.layer addAnimation:myAnimation forKey:#"myAnimation"];
But i don't find the equivalent when I tried to make an action :
id action = [CC… ?];
Thanks !
I think you may be looking for members of the CCAction class.
For example, CCMoveTo will move a CCNode from its current position to a new position over a period of time. CCMoveBy will move a CCNode by a certain amount (relative). etc.
See this reference (and search google for "Cocos2d CCAction", there are lots of references).
Was this helpful?
use a CCMoveTo (for displacement to an absolute x,y) or CCMoveBy for a relative movement from current position at the moment when the animation starts.
I'm trying to move all sprites with the same tag some inches to the right.
I have tried 4 different type of expressions in order to do so, but nothing worked. Here is what i ve done so far...
-(void) moveSprites {
NSArray* spritesWithTag = [lh spritesWithTag: BOXES1]
for (LHSprite* spr in spritesWithTag)
(NSLog (#"name is %#", [spr uniqueName]);
CGPoint newposition = ccpSub (ccp(-50,0), [spr position]);
//generating the new position for the elements
[spr transformPosition: newposition];
//first attemp, should work but for some reason it doesn't work
spr.position = newposition;
//2nd attemp
b2Vec2 newpositionVector (newposition.x, newposition.y);
[spr body]->SetTransform(newpositionVector, 0);
//third try
[spr setPosition:newposition];
//last form
}
When i run the app the method call works fine and all sprites with tag BOXES1 appear in the output tab, but its position hasn't changed at all. Any idea over why is it happening. What did I wrong? Is there any other way to move an sprite or are them prevented from moving in some other form i dont know? Those are static sprites, dont know if this affects... thanks!
I am using the inputmethodkit and trying to place a window underneath some text.
_currentClient is an IMKTextInput instance
candidates is an IMKCandidates instance
// Get the current location to place the window
NSRect tempRect = NSMakeRect(0, 0, 0, 0);
NSDictionary* clientData = [_currentClient attributesForCharacterIndex:0 lineHeightRectangle:&tempRect];
NSPoint* windowInsertionPoint = (NSPoint*)[clientData objectForKey:#"IMKBaseline"];
...
[candidates setCandidateFrameTopLeft:*windowInsertionPoint];
[candidates showCandidates];
Now, I know that the windowInsertionPoint variable is fine, when I debug I can see it's value, eg: NSPoint: {647,365}
However when I use this, the candidate window just shows in the bottom left corner of the screen. I haven't worked with screen placement of stuff before, so help is appreciated.
If I pass in arbitrary static values to setCandidateFrameTopLeft, it gets placed in the screen. The following works:
[candidates setCandidateFrameTopLeft:NSMakePoint(401, 354)];
Is it a pointer problem?
OK, the solution to this is that I am an idiot. Here is the code you need:
NSRect tempRect;
NSDictionary* clientData = [_currentClient attributesForCharacterIndex:0 lineHeightRectangle:&tempRect];
NSPoint windowInsertionPoint = NSMakePoint(NSMinX(tempRect), NSMinY(tempRect));
The documentation for IMKTextInput attributesForCharacterIndex says
lineRect: On return, a rectangle that frames a one-pixel wide rectangle with the height of the line. This rectangle is oriented the same way the line is oriented.
This means it returns an NSRect into the variable your passed it for the lineHeightRectangle value. The important point is that the location of that NSRect is the location of the character you are searching for. So, then you need to just make a point from that rectangle and use NSMinY for the Y value. The rectangle is only a single pixel wide so Min/Max for X are basically the same.
You probably don't have this issue anymore, but this works too, for future:
[candidates show:kIMKLocateCandidatesBelowHint];
a big noob needs help understanding things.
I have three UIViews stored inside a NSMutableArray
lanes = [[NSMutableArray arrayWithCapacity:3] retain];
- (void)registerLane:(Lane*)lane {
NSLog (#"registering lane:%i",lane);
[lanes addObject:lane];
}
in the NSLog I see: registering lane:89183264
The value displayed in the NSLog (89183264) is what I am after.
I'd like to be able to save that number in a variable to be able to reuse it elsewhere in the code.
The closest I could come up with was this:
NSString *lane0 = [lanes objectAtIndex:0];
NSString *description0 = [lane0 description];
NSLog (#"description0:%#",description0);
The problem is that description0 gets the whole UIView object, not just the single number (dec 89183264 is hex 0x550d420)
description0's content:
description0:<Lane: 0x550d420; frame = (127 0; 66 460); alpha = 0.5; opaque = NO; autoresize = RM+BM; tag = 2; layer = <CALayer: 0x550d350>>
what I don't get is why I get the correct decimal value with with NSLog so easily, but seem to be unable to get it out of the NSMutableArray any other way. I am sure I am missing some "basic knowledge" here, and I would appreciate if someone could take the time and explain what's going on here so I can finally move on. it's been a long day studying.
why can't I save the 89183264 number easily with something like:
NSInteger * mylane = lane.id;
or
NSInteger * mylane = lane;
thank you all
I'm really confused as to why you want to save the memory location of the view? Because that's what your '89183264' number is. It's the location of the pointer. When you are calling:
NSLog (#"registering lane:%i",lane);
...do you get what's actually being printed out there? What the number that's being printed means?
It seems like a really bad idea, especially when if you're subclassing UIView you've already got a lovely .tag property which you can assign an int of your choosing.
You're making life infinitely more complex than it needs to be. Just use a pointer. Say I have an array containing lots of UIViews:
UIView *viewToCompare = [myArray objectAtIndex:3];
for (id object in myArray) {
if (object == viewToCompare) {
NSLog(#"Found it!");
}
}
That does what you're trying to do - it compares two pointers - and doesn't need any faffing around with ints, etc.