I am creating a simple MainMenu scene and on "play" button select I move to the Game scene as follows:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if ([node.name isEqualToString:#"play"]) {
SKScene *gameScene = [[GameScene alloc] initWithSize:self.size];
SKTransition *fadeTransition = [SKTransition fadeWithColor:[UIColor blackColor] duration:0.3];
[self.view presentScene:gameScene transition:fadeTransition];
}
}
}
After the transition app crash with EXC_BAD_ACCESS (code=1). I am currently running Xcode6 + SpritKit/Objective-C
Found the problem - apparently caused by particle targetNode assignment:
starParticle.targetNode = self.scene;
which probably should have been released before presenting other scene
Related
I've just started to learn how to program with xCode and more specifically with the new SpriteKit. So bare in mind I'm kind of new to this.
I've managed to move to a different scene by pressing on a label, but somehow the background of my scene has gone all wrong. the background should be like the first scene, but it gave me a background with two horizontal bars. I don't think I've done anything wrong since I've just copied the code needed to set the background to the second scene.
1st scene:
http://imageshack.us/photo/my-images/23/kyud.png/
2nd scene:
http://imageshack.us/photo/my-images/198/472h.png/
my code used to set up both backgrounds:
SKSpriteNode *background = [SKSpriteNode spriteNodeWithImageNamed:#"background_start"];
background.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame));
background.xScale = 0.7;
background.yScale = 0.7;
[self addChild:background];
transition is done with:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
/* Called when a touch begins */
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if([node.name isEqualToString:#"startgame"]){
Options_Scene *gs = [[Options_Scene alloc] initWithSize:self.size];
SKTransition *doors = [SKTransition doorsOpenVerticalWithDuration:0.5];
[self.view presentScene:gs transition:doors];
}
}
PS: I find it odd why I have to scale it to 0.7 when the background actually has the dimensions 480x320.
As you are using landscape I would swap the
viewWillAppear
With
- (void)viewWillLayoutSubviews
{
[super viewWillLayoutSubviews];
SKView * skView = (SKView *)self.view;
if (!skView.scene) {
//skView.showsFPS = YES;
//skView.showsNodeCount = YES;
// Create and configure the scene.
SKScene * scene = [PMyScene sceneWithSize:skView.bounds.size];
scene.scaleMode = SKSceneScaleModeAspectFill;
// Present the scene.
[skView presentScene:scene];
}
}
This question already has answers here:
How to allow a user to move a button via iOS sdk
(3 answers)
Closed 9 years ago.
I want to move a UIButton in my app using dragging.
The UIButton is created using code.
How can I do that?
you can achieve this in following way:
you can use touchesMoved gesture or use UIPanGestureRecognizer
1) using touchesMoved:
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:self];
placardView.center = location;
return;
}
2) using UIPanGestureRecognizer
add a gesture recognizer to the button on viewDidLoad as follows:
UIPanGestureRecognizer *objGesture= [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(moveButton:)];
[myButton addGestureRecognizer:objGesture];
[objGesture release];
write the target Method to be called
-(void)moveButton:(UIPanGestureRecognizer *)recognizer
{
if (recognizer.state == UIGestureRecognizerStateChanged ||
recognizer.state == UIGestureRecognizerStateEnded) {
UIView *draggedButton = recognizer.view;
CGPoint translation = [recognizer translationInView:self.view];
CGRect newButtonFrame = draggedButton.frame;
newButtonFrame.origin.x += translation.x;
newButtonFrame.origin.y += translation.y;
draggedButton.frame = newButtonFrame;
[recognizer setTranslation:CGPointZero inView:self.view];
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint pt = [[touches anyObject] locationInView:self];
button.center = pt;
}
Try using panGestureRecognizer or by using the touches methods.
click here for more reference.
I am creating a zoomable and pan-able map for my game (using CCPanZoomController) . Within this map I would like to have a tappable sprite, and when it is tapped, "do something"…
I can get the two things to work perfectly in separate projects, however when I try to combine them, nothing happens when I tap my sprite.
I have included an image to demonstrate further:
//in my init section
self.isTouchEnabled = YES;
mapBase = [CCSprite spriteWithFile:#"MapBase.png"];
mapBase.anchorPoint = ccp(0, 0);
[self addChild:mapBase z:-10];
gym = [CCSprite spriteWithFile:#"Gym.png"];
gym.scale = 0.3;
gym.position = ccp(1620, 250);
[self addChild:gym z:1];
CGRect boundingRect = CGRectMake(0, 0, 2499, 1753);
_controller = [[CCPanZoomController controllerWithNode:self] retain];
_controller.boundingRect = boundingRect;
_controller.zoomOutLimit = _controller.optimalZoomOutLimit;
_controller.zoomInLimit = 2.0f;
[_controller enableWithTouchPriority:1 swallowsTouches:YES];
//end of init
-(void) registerWithTouchDispatcher
{
[[[CCDirector sharedDirector] touchDispatcher] addTargetedDelegate:self
priority:0 swallowsTouches:NO];
}
-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event{
CGPoint touchPoint1 = [touch locationInView:[touch view]];
if (CGRectContainsPoint(gym.boundingBox, touchPoint1)) return YES;
return NO;
}
-(void) ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event{
CGPoint touchPoint2 = [touch locationInView:[touch view]];
if (CGRectContainsPoint(gym.boundingBox, touchPoint2)){
CCLOG(#"SPRITE HAS BEEN TAPPED");
}
}
I want to beable to zoom in/out and pan the wholemap (including the ‘Gym’ sprite).
And if the sprite 'Gym' is tapped by the user, then i would like to “do something”.
If anyone can figure this out, I would be extremely grateful!
Thanks.
I'm working on an image editing app. Right now I have the app built so a user can choose a photo from their library or take a photo with the camera. I also have another view (a picker view) that has other images a user can choose from. By selecting one of the images the app takes the user back to the main photo.
I want the user to be able to touch anywhere on screen and add the image they selected.
What is the best way to approach this?
touchesBegan? touchesMoved? UITapGestureRecognizer?
If anyone knows of any sample code or can give me a general idea of how to approach this that would be great!
EDIT:
Now I am able to see the coordinates and that my UIImage is getting the image I select from my Picker. But the image is not being displayed on the screen when I tap. Can someone help me troubleshoot my code please:
-(void)drawRect:(CGRect)rect
{
CGRect currentRect = CGRectMake(touchPoint.x, touchPoint.y, 30.0, 30.0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextFillRect(context, currentRect);
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch * touch = [touches anyObject];
touchPoint = [touch locationInView:imageView];
NSLog(#"%f", touchPoint.x);
NSLog(#"%f", touchPoint.y);
if (touchPoint.x > -1 && touchPoint.y > -1)
{
stampedImage = _imagePicker.selectedImage;
//[stampedImage drawAtPoint:touchPoint];
[_stampedImageView setFrame:CGRectMake(touchPoint.x, touchPoint.y, 30.0, 30.0)];
[_stampedImageView setImage:stampedImage];
[imageView addSubview:_stampedImageView];
NSLog(#"Stamped Image = %#", stampedImage);
//[self.view setNeedsDisplay];
}
}
For an example of my NSLogs I am seeing:
162.500000
236.000000
Stamped Image = <UIImage: 0xe68a7d0>
Thanks!
In your ViewController, user the method "-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event" to get the X and Y coordinate of where a touch happened. Here is some sample code that shows how to get the x and y of the touch
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
/* Detect touch anywhere */
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];
NSLog(#"%f", touchPoint.x); // The x coordinate of the touch
NSLog(#"%f", touchPoint.y); // The y coordinate of the touch
}
Once you have this x and y data, you can set the image that the user selected or shot with the built in camera to appear at those coordinates.
EDIT:
I think the issue MIGHT lie in how you create you UIImage view. Instead of this:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch * touch = [touches anyObject];
touchPoint = [touch locationInView:imageView];
CGRect myImageRect = CGRectMake(touchPoint.x, touchPoint.y, 20.0f, 20.0f);
UIImageView * myImage = [[UIImageView alloc] initWithFrame:myImageRect];
[myImage setImage:_stampedImageView.image];
myImage.opaque = YES;
[imageView addSubview:myImage];
[myImage release];
}
Try this:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch * touch = [touches anyObject];
touchPoint = [touch locationInView:imageView];
myImage = [[UIImageView alloc] initWithImage:_stampedImageView.image];
[imageView addSubview:myImage];
[myImage release];
}
If this does not work, try checking if "_stampedImageView.image == nil". If this is true, Your UIImage may not have been created properly.
In cocos2d game development, CGRectContainsPoint method often used to detect if touch on a CCSprite.
I use code fllow to get a sprite's (which in a CCNode) rect property
- (void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event {
CCLOG(#"ccTouchEnded");
CGPoint location = [touch locationInView:[touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
CCLOG(#"location.x:%f, y:%f", location.x, location.y);
CGRect rect;
rect = CGRectMake(self.firstCard.face.position.x-(self.firstCard.face.contentSize.width/2), self.firstCard.face.position.y-(self.firstCard.face.contentSize.height/2),
self.firstCard.face.contentSize.width, self.firstCard.face.contentSize.height);
if (CGRectContainsPoint(rect, location)) {
CCLOG(#"first card touched");
[firstCard open];
}
rect = CGRectMake(self.secondCard.face.position.x-(self.secondCard.face.contentSize.width/2), self.secondCard.face.position.y-(self.secondCard.face.contentSize.height/2),
self.secondCard.face.contentSize.width, self.secondCard.face.contentSize.height);
if (CGRectContainsPoint(rect, location)) {
CCLOG(#"second card touched");
[secondCard open];
}
}
I want to know if there is a convenient way to get a CCSprite 's rect straightforward?
Please use boundingBox i think it will be a great option to use.
Like this:
- ( void ) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
locationTouchBegan = [touch locationInView: [touch view]];
//location is The Point Where The User Touched
locationTouchBegan = [[CCDirector sharedDirector] convertToGL:locationTouchBegan];
//Detect the Touch On sprite
if(CGRectContainsPoint([sprite boundingBox], locationTouchBegan))
{
isSpriteTouched=YES;
}
}
Kobold2D has a convenience method containsPoint as a CCNode extension (Objective-C category) which you can replicate in your project:
-(BOOL) containsPoint:(CGPoint)point
{
CGRect bbox = CGRectMake(0, 0, contentSize_.width, contentSize_.height);
CGPoint locationInNodeSpace = [self convertToNodeSpace:point];
return CGRectContainsPoint(bbox, locationInNodeSpace);
}
Your code then be simplified to this and it will work with rotated and/or scaled sprites as well (the boundingBox method fails to test rotated and scaled sprites correctly).
if ([firstCard.face containsPoint:location]) {
CCLOG(#"first card touched");
}