I have a large image (1024, 1496) as a background image of my layer.So I started to show the button of the image.
In the time of application I show the top of the image, and some CCSprites.
id move = [CCMoveBy actionWithDuration:2 position:ccp(0,-746)];
[layer runAction:move];
My problem is that I can't detect touch on the CCSrites because their position stay the same ex. (20, 1200), and the UITouch between the (1024,746).
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch * touch in [event allTouches]){
for (CCSprite *book in books) {
CGPoint location = [touch locationInView:touch.view];
location = [[CCDirector sharedDirector] convertToGL:location];
if (CGRectContainsPoint([book boundingBox], location))
NSLog(#"Touch");
else{
NSLog(#"NO Touch"); }
}
}
}
Any idea how to solve this problem??
Just convert the sprite touch to world coordinates. You can do this with your own method by calculating the screen position based on zooming and sprite size, or use methods within Cocos to convert to world coordinates. I tend to do the former.
Related
This is my first post so go easy haha.
I'm new to 'iOS' 'coding', 'Xcode' and 'spritekit'. I'm looking to make an image node "jump" a distance on the positive y-axis if I touch anywhere on the screen, although if I touch somewhere to the left or right if the image and hold for a certain time, it moves in the respective left or right direction, a distance respective to the length of the touch.
Not sure if that's very clear, but any help would be appreciated! Thanks!
You could move a node like this
In touchesEnded: or touchesBegan: method:
{
node.position.y += 50;
}
In order for sprite to move somewhere you could also use actions, there is a family of actions like moveTo action.
I would suggest picking upa tutorial or a book about sprite kit. Good site with free tutorials is raywenderlich.com
Please Try this code :
a sprite move : left/right according to your touch direction anywhere on screen
// CGPoint initialPos; // in .h file
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint touchPt = [touch locationInView:touch.view];
initialPos = [[CCDirector sharedDirector] convertToGL:touchPt];
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *myTouch=[touches anyObject];
CGPoint currentPos=[myTouch locationInView:[myTouch view]];
currentPos=[[CCDirector sharedDirector] convertToGL:currentPos];
float diffX = currentPos.x - initialPos.x;
float diffY = currentPos.y - initialPos.y;
CGPoint velocity = ccp(diffX, diffY);
initialPos = currentPos;
[Sprite setPosition:ccpAdd([SmileBall position], velocity)];
}
- (void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *myTouch=[touches anyObject];
CGPoint currentPos=[myTouch locationInView:[myTouch view]];
currentPos=[[CCDirector sharedDirector] convertToGL:currentPos];
float diffX = currentPos.x - initialPos.x;
float diffY = currentPos.y - initialPos.y;
CGPoint velocity = ccp(diffX, diffY);
initialPos = currentPos;
[Sprite setPosition:ccpAdd([SmileBall position], velocity)];
}
a sprite jump up: according to your touch on screen
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
CCSprite *RunningChar;
RunningChar=(CCSprite *)[self getChildByTag:10];
UITouch *touch = [touches anyObject];
CGPoint touchPt = [touch locationInView:touch.view];
touchPt = [[CCDirector sharedDirector] convertToGL:touchPt];
float radian = ccpToAngle(ccpSub(touchPt, prevPoint));
float degrees = CC_RADIANS_TO_DEGREES(radian);
if (degrees >= 22.5 && degrees <= 112.5) // for upward direction :). otherwise you can write only code without ant condition
{
CCJumpTo *jump=[CCJumpTo actionWithDuration:0.7 position:CGPointMake(RunningChar.position.x, 87) height:110 jumps:1];
[RunningChar runAction:seq];
}
else
{
}
}
Try this :)
I use this code example to detect whether sprite is touched.
-(void) touchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
CGPoint location = [touch locationInView: [touch view]];
CGPoint convertedlocation = [[CCDirector sharedDirector] convertToGL: location];
CGPoint convertedNodeSpacePoint = [self convertToNodeSpace:convertedlocation];
if (CGRectContainsPoint([_sprite boundingBox],convertedNodeSpacePoint))
{}
I have many sprites, and I must copy that code many times for each of them just changing sprite names. How can I make this process a bit shorter ? Making a NSArray, maybe?
If I have get your question right, you can use for loop and check all children. Something like this-
CGPoint location = [touch locationInView:[touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
for (CCSprite *spr in self.children) {
if ([spr isKindOfClass:[CCSprite class]]) {
float distance = pow(spr.position.x - location.x, 2) + pow(spr.position.y - location.y, 2);
distance = sqrt(distance);
if (distance1 <= 150) {
//do something with your sprite
}
}
}
i try to run some code, when my finger is moved to the same position, where the imageview is.
I defined the position of the image view:
CGRect imagepos = myImage.frame;
And the position of actual touch position:
UITouch *myTouch = [[touches allObjects] objectAtIndex: 0];
CGPoint currentPos = [myTouch locationInView: self.view];
I tried withCGPointEqualToPoint it not worked. Then i tried with CGRectContainsPoint it also not worked, because, when imagepos and currentpos have the same x coordinates, my "some code" is running (my finger is not moved to the image, they had only the same x positions. Y positions are totally different).
How can I say, when my finger (also in the method touchesmoved) touch/is moved to/is at anywhere of the image, run some code or a method?
Thanks for Answers.
In your touchesBegan method, you can try something like this:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
if([touch view] == myImgView)
{
NSLog(#"My Image was touched");
}
}
This tells you when your ImageView is touched. Make sure you set userInteractionEnabled to YES in your imageView.
Hey try out below -
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
for (UITouch *touch in touches) {
CGPoint location = [touch locationInNode:self]; //Now you got current location of click or tap
if(location.y == YOUR_IMAGE_VIEW_POSITION_Y)
{
NSLog(#"Got the TOUCH...OOOoopsss !!!");
}
}
}
Hope this helped.
There is a function...
CGRectContainsPoint(rect, point);
It returns a bool if the point is inside the rect.
So get the touch point and run this with the imageView frame to find out if the touch was inside the image view.
I have the following piece of code to drag a sprite around the screen using cocos2D:
-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint touchLocation = [self convertTouchToNodeSpace:touch];
CGPoint oldTouchLocation = [touch previousLocationInView:touch.view];
oldTouchLocation = [[CCDirector sharedDirector] convertToGL:oldTouchLocation];
oldTouchLocation = [self convertToNodeSpace:oldTouchLocation];
CGPoint translation = ccpSub(touchLocation, oldTouchLocation);
CGPoint newPos = ccpAdd([mySprite position], translation);
[mySprite setPosition:newPos];
}
The sprite is shown on the screen and I can drag it around the screen with my finger, but the sprite is slower than my finger lagging behind about a quarter of an inch.
What can I do to avoid this lag?
Thanks,
GA
Is there any way to rotate a CCSprite to behave like a car Steering?If i release my touch with the CCSprite,it should automatically return to its original position in a smooth way exactly like a steering!Im using the below code,
-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch=[touches anyObject];
//acquire the previous touch location
CGPoint firstLocation = [touch previousLocationInView:[touch view]];
location = [touch locationInView:[touch view]];
CGPoint touchingPoint = [[CCDirector sharedDirector] convertToGL:location];
CGPoint firstTouchingPoint = [[CCDirector sharedDirector] convertToGL:firstLocation];
CGPoint firstVector = ccpSub(firstTouchingPoint, Steering.position);
CGFloat firstRotateAngle = -ccpToAngle(firstVector);
CGFloat previousTouch = CC_RADIANS_TO_DEGREES(firstRotateAngle);
CGPoint vector = ccpSub(touchingPoint, Steering.position);
CGFloat rotateAngle = -ccpToAngle(vector);
CGFloat currentTouch = CC_RADIANS_TO_DEGREES(rotateAngle);
dialrotation+=currentTouch-PreviousTouch;
sprite.rotation=dialrotation;
}
This rotates my CCSprite Smoothly,but i don't know how to return back to its original position like Car Steering.Is there any way to do so in Cocos2D?
In ccTouchesBegan method store the value of sprite.rotation somewhere, in ccTouchesEnded run CCRotateTo action on your sprite using this stored value.