I have tried to find a way of registering a touch event in cocos3d such as TOUCHESBEGAN but that does not exist, only
-(void) touchEvent: (uint) touchType at: (CGPoint) touchPoint {
NSLog(#"hello");
}
Bu that does not log "hello".
How can this be done?
Not sure if you are still interested with the answer, but here goes.
In order to use touchEvent in cocos3d, you need to enable touch in the CC3Layer (in the initializeControls method)
self.isTouchEnabled = YES;
Then you can use the touchEvent:(uint)touchType at:(CGPoint)touchPoint in the CC3Scene.
Is started to work for me when I have put this code in my CC3Layer subclass
-(void) initializeControls {
[self scheduleUpdate];
self.userInteractionEnabled = YES;
[self setTouchEnabled:YES];
}
Related
I'm wondering if someone knows how to implement the "touch up inside" response when a user pushes down then lifts their finger in the touchesBegan, touchesEnded methods. I know this can be done with UITapGestureRecognizer, but actually I'm trying to make it so that it only works on a quick tap (with UITapGestureRecognizer, if you hold your finger there for a long time, then lift, it still executes). Anyone know how to implement this?
Using the UILongPressGesturizer is actually a much better solution to mimic all of the functionality of a UIButton (touchUpInside, touchUpOutside, touchDown, etc.):
- (void) longPress:(UILongPressGestureRecognizer *)longPressGestureRecognizer
{
if (longPressGestureRecognizer.state == UIGestureRecognizerStateBegan || longPressGestureRecognizer.state == UIGestureRecognizerStateChanged)
{
CGPoint touchedPoint = [longPressGestureRecognizer locationInView: self];
if (CGRectContainsPoint(self.bounds, touchedPoint))
{
[self addHighlights];
}
else
{
[self removeHighlights];
}
}
else if (longPressGestureRecognizer.state == UIGestureRecognizerStateEnded)
{
if (self.highlightView.superview)
{
[self removeHighlights];
}
CGPoint touchedPoint = [longPressGestureRecognizer locationInView: self];
if (CGRectContainsPoint(self.bounds, touchedPoint))
{
if ([self.delegate respondsToSelector:#selector(buttonViewDidTouchUpInside:)])
{
[self.delegate buttonViewDidTouchUpInside:self];
}
}
}
}
I'm not sure when it was added, but the property isTouchInside is a life saver for any UIControl derived object (e.g. UIButton).
override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
super.endTracking(touch, with: event)
if isTouchInside {
// Do the thing you want to do
}
}
Here's the Apple official docs
You can implement touchesBegan and touchesEnded by creating a UIView subclass and implementing it there.
However you can also use a UILongPressGestureRecognizer and achieve the same results.
I did this by putting a timer that gets triggered in touchesBegan. If this timer is still running when touchesEnded gets called, then execute whatever code you wanted to. This gives the effect of touchUpInside.
-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSTimer *tapTimer = [[NSTimer scheduledTimerWithTimeInterval:.15 invocation:nil repeats:NO] retain];
self.tapTimer = tapTimer;
[tapTimer release];
}
-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([self.tapTimer isValid])
{
}
}
You can create some BOOL variable then in -touchesBegan check what view or whatever you need was touched and set this BOOL variable to YES. After that in -touchesEnded check if this variable is YES and your view or whatever you need was touched that will be your -touchUpInside. And of course set BOOL variable to NO after.
You can add a UTapGestureRecognizer and a UILongPressGestureRecognizer and add dependency using [tap requiresGestureRecognizerToFail:longPress]; (tap and long press being the objects of added recognizers).
This way, the tap will not be detected if long press is fired.
I've been trying to resolve a problem for a long time, unfortunately i couldn't find a solution. I hope you can help me...
I'm trying to develop a turn based game. Player 1 is the user, player 2 is the iphone. I want to receive touches when it's the player1's turn.
-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
if (self.playerNo==1) { //control player1
CGPoint touchLocation = [self convertTouchToNodeSpace:touch];
[self selectSpriteForTouch:touchLocation];
return YES;
}
//if it's not player1's turn, return NO
return NO;
}
When it's iphones turn, I want to disable touches during 5 seconds. I tried all the ways below, but no success.
-(void)iphonesTurn
{
[NSThread sleepForTimeInterval:5];
//
//game logic...
//
}
During 5 seconds I touch screen several times. I realised that all the touches looks like stored and the app reacts to all of my touches when it's the player1's turn.
How can I completely disable touches?
Thanks for your help.
I don't know where is located your snippet of code but if it runs into the main thread you must NEVER block (pause) it!
Try to do something like that (it works with the final version of cocos2d 2.0):
- (void)iphonesTurn
{
[[[CCDirector sharedDirector] touchDispatcher] setDispatchEvents:NO];
[self scheduleOnce:#selector(enableTouch) delay:5.0f];
}
- (void)enableTouch
{
[[[CCDirector sharedDirector] touchDispatcher] setDispatchEvents:YES];
}
I am writing a pause menu using a CCLayer. I need the layer to swallow touches so that you cannot press the layer below, however I also need to be able to use the buttons on the pause layer itself.
I can get the layer to swallow touches, but the menu won't work either.
Here is my code:
pauseLayer.m
#import "PauseLayer.h"
#implementation PauseLayer
#synthesize delegate;
+ (id) layerWithColor:(ccColor4B)color delegate:(id)_delegate
{
return [[[self alloc] initWithColor:color delegate:_delegate] autorelease];
}
- (id) initWithColor:(ccColor4B)c delegate:(id)_delegate {
self = [super initWithColor:c];
if (self != nil) {
NSLog(#"Init");
self.isTouchEnabled = YES;
CGSize wins = [[CCDirector sharedDirector] winSize];
delegate = _delegate;
[self pauseDelegate];
CCSprite * background = [CCSprite spriteWithFile:#"pause_background.png"];
[self addChild:background];
CCMenuItemImage *resume = [CCMenuItemImage itemFromNormalImage:#"back_normal.png"
selectedImage:#"back_clicked.png"
target:self
selector:#selector(doResume:)];
resume.tag = 10;
CCMenu * menu = [CCMenu menuWithItems:resume,nil];
[menu setPosition:ccp(0,0)];
[resume setPosition:ccp([background boundingBox].size.width/2,[background boundingBox].size.height/2)];
[background addChild:menu];
[background setPosition:ccp(wins.width/2,wins.height/2)];
}
return self;
}
-(void)pauseDelegate
{
NSLog(#"pause delegate");
if([delegate respondsToSelector:#selector(pauseLayerDidPause)])
[delegate pauseLayerDidPause];
}
-(void)doResume: (id)sender
{
if([delegate respondsToSelector:#selector(pauseLayerDidUnpause)])
[delegate pauseLayerDidUnpause];
[self.parent removeChild:self cleanup:YES];
}
- (void)onEnter {
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:YES];
[super onEnter];
}
- (void)onExit {
[[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
[super onExit];
}
- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
return YES;
}
-(void)dealloc
{
[super dealloc];
}
#end
why dont you just disable touches on the game layer?
like in the onEnter method disable the touches on the game layer..and onExit re enable them
something like
-onEnter{
gameLayer.isTouchEnabled=NO;
....
}
-onExit{
gameLater.isTouchEnabled=YES;
...
}
also you wont need CCTouchDispatcher
According to your code, the problem is the modal layer is swallowing events even if it's for the own children.
To solve this problem, you have to set the touch priority of the children even higher than the modal layer itself.
In other words, set the menu's touch priority value below modal layer's.
There are two solutions.
Simply override "CCMenu::registerWithTouchDispatcher()" method and set the priority higher from the beginning.
Change menu's touch priority using "setPriority" method of the touchDispatcher or "setHandlerPriority" of menu itself.
To achieve second solution, you have to pay attention to the timing.
"CCMenu::registerWithTouchDispatcher()" is called somewhere AFTER "onEnter" and "onEnterTransitionDidFinish".
So, use "scheduleOnce" or something like that.
Sample codes.
- (id) initWithColor:(ccColor4B)c delegate:(id)_delegate {
self = [super initWithColor:c];
if (self != nil) {
//your codes...... put CCMenu in instance
[self scheduleOnce:#selector(setMenuPriority:) delay:0];
}
return self;
}
- (void) setMenuPriority (ccTime)dt {
[[[CCDirector sharedDirector] touchDispatcher] setPriority:INT_MIN forDelegate:menu];
//priority "INT_MIN" because you set the layer's priority to "INT_MIN+1".
}
PS: My english is not so good, so if there are loose sentences, correction will be very pleased :)
The problem is, that the layer/node hierarchy is not considered when propagating touches.
The touches are handed from the touch handler with the smallest priority value to the ones with the highest.
The touches are not forwarded anymore, once one of the responders swallows the touch.
You can use an approach similar to CCMenu. CCMenu handles all touches and detects which CCMenuItemhas been selected, based on the position of these items.
If you implement this the same way, you let your PauseLayer handle and swallow all touches and use a seperate mechanism to determine which child element in your PauseLayer has been selected.
Example Implementation: CCMenu Subclass
I have implemented a solution in this repository:
https://github.com/Ben-G/MGWU-Widgets/tree/master/Projectfiles/Components/CCMenuBlocking
That component is a CCMenuSubclass that swallows all touches and does not forward them.
Example Implementation: CCNode
Here is a more general solution of a CCNode that swallows touches and only forwards them to its own children:
https://github.com/Ben-G/MGWU-Widgets/blob/master/Projectfiles/Components/Popup/PopUp.m
I'm new to Objective C and app development so please go easy on me!
I'm trying to make a basic game and need to move a sprite left or right continuously while the user's finger is on the screen - left side to go left, right to go right...
I'm trying to use update to repeat movements of a few pixels every 1/60th second. So far, this is what I have (and sorry about the formatting):
#import "GameplayLayer.h"
#implementation GameplayLayer
-(id)init {
self = [super init];
if (self != nil) {
CGSize screenSize = [CCDirector sharedDirector].winSize;
// enable touches
self.isTouchEnabled = YES;
blobSprite = [CCSprite spriteWithFile:#"blob.png"];
[blobSprite setPosition: CGPointMake(screenSize.width/2, screenSize.height*0.17f)];
ball = [CCSprite spriteWithFile:#"ball.png"];
[ball setPosition:CGPointMake(10, screenSize.height*0.75f)];
[self addChild:blobSprite];
[self addChild:ball];
[self schedule:#selector(update) interval:1.0f/60.0f];
}
return self;
}
-(void) update:(ccTime)dt{
if (_tapDownLeft == YES){
blobSprite.position.x==blobSprite.position.x-5;
}
if (_tapDownRight == YES){
blobSprite.position.x==blobSprite.position.x+5;
}
}
-(void) ccTouchesBegan:(UITouch*)touch withEvent: (UIEvent *)event{
CGPoint touchLocation = [touch locationInView:[touch view]];
touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];
if (touchLocation.x > 400) {
if ((blobSprite.position.x+10)<460){
_tapDownRight = YES;
}
}
if (touchLocation.x < 200) {
if ((blobSprite.position.x-10>20)){
_tapDownLeft = YES;
}
}
else {
_tapDownLeft = NO;
_tapDownRight = NO;
}
}
-(void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event{
_tapDownLeft = NO;
_tapDownRight = NO;
}
-(void) registerWithTouchDispatcher{
[[CCTouchDispatcher sharedDispatcher]addTargetedDelegate:self priority:0 swallowsTouches:YES];
}
#end
Am I on the right lines with this? At the moment it's giving me 'expression result unused' in update. Could anyone tell me what I'm missing? Any help would be greatly appreciated.
Thanks,
Patrick
i see a few things here:
not certain your selector will call update : #selector(update:)
I would not rely on dt being either exactly 1/60th of a second, nor being constant. I would favor defining a speed constant (in points per second) and compute the deltaX in points based on the desired speed and dt, at each update cycle.
I dont see a 'registerWithTouchDispatcher' call (i try to place them in onEnter and onExit) methods.
Somewhere in there, make certain you remove your children (either in dealloc, or better in a local cleanup method (dont forget to invoke [super cleanup]).
Remove the argument in the update function
I'm trying to basically scale up a button as soon as a touch is detected. Here's my Scene:
#implementation HomeScene
-(id) init
{
if((self = [super init])) {
...
// sp_btn_story is retained...
sp_btn_story = [[CCSprite spriteWithFile:#"main_menu_btn.png"] retain];
sp_btn_story.position = ccp(size.width - 146, 110);
[self addChild: sp_btn_story];
...
}
return self;
}
-(void) onEnter
{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
}
-(void) onExit
{
[[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
}
- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
NSLog(#"tapped!");
sp_btn_story.scaleX = 2;
[sp_btn_story stopAllActions];
[sp_btn_story runAction: [CCScaleTo actionWithDuration:0.5f scale:1.2f]];
return YES;
}
...
#end
It scales the X just fine, as expected. (I threw that in there to test.) But the action is not running for some reason. :( Anyone have any ideas?
Edit: using cocos2d 0.99 btw.
The answer for this question (reposted from the asker's own comment to make it more visible):
It's quite important to call
[super onEnter];
if you overwrite this method in a subclass or strange things may happen. Cocos2D will not be happy.
This applies to other (if not all) methods as well, e. g. always call
[super onExit];
as well.
Not complete sure what could be going on. Looks like what you have should work fine but you may want to try applying a different action to sp_btn_story like fade in or fade out to see if at least any action will work. Failing that you could also try applying the action in a different part of your code. These are not solutions but they may provide evidence to indicate what exactly is going on.