To Touch or Multitouch... That is the question...

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To Touch or Multitouch... That is the question...

(8 posts) (4 voices)

Started 1 year ago by madclouds
Latest reply from calvin pratap samuel

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madclouds
Member

Hi Community! You guys are awesome!

So I have an interesting challenge that I'd like to discuss with the community and hopefully learn something in the process. My game consists of 5 buttons. Here's an image to identify the layout:

Every time a button is touched - a bullet is shot from the button.position.

The Challenge:
When two buttons next to each other are touched at the same time, a bullet is fried from the center point between the two buttons.

For example - if button 3 is touched a bullet is fired from the center of the screen, but if button 3 and 4 is touched at the same time a bullet is fried from the location between the two buttons!

Crazy challenge hu?

Some Thoughts:
I was considering creating a button manager layer that would track all touches and calculate their location in relation to the buttons. This may be my best option and I'll proceed with this unless someone can convince me otherwise :)

Another thought was to have a boolean in each button class that when ccTouchesBegan set it to YES and when ccTouchesEnded set it to NO - then in some scheduler compare the booleans of each button to determine the starting location of the bullet.

Potential Problem:
I'm worried about the timing associated with determining if one button was pressed, or if two (or more) are pressed.
I know there's more... But I'm drawing a blank right now.

I'm very excited to hear from the community! Thanks for any feedback or suggestions!

Erik

Posted 1 year ago #
max9xs
Member
[edited ]I figured it out the same like that in game cartoonmen

There is no need to create any buttonmanager like stuff...

I have used this kind of strategy in my game

Create 5 UIButtons.. in .h file or globally

UIButton *l1,*l2,*l3,*l4,*l5;

Create one scheduler

[self schedle:@selector(buttonEvent:)];

your scheduler function
```
-(void)buttonEvent
{

   if([l1 isHighligheted])   //highlighted means between the touch began and touch end,,event
  {
   //your code
  }

   if([l1 isHighligheted] && [l2 isHighlighted])   //both buttons at the same time..the solution of your issue..
  {
   //your code
  }

}
```
the syntax may be wrong bcz i havent copy-paste them from my game source code.. but its works fine
I hope it can help you..

Cheers !
Max
Posted 1 year ago #
madclouds
Member
@Max - Very creative! Thanks for your suggestion. I'm going to fully implement this to ensure it'll work for my needs, but my initial investigation is looking positive! Thanks again Max!

For anyone interested, this is how I'm using a UIButton and adding it to my layer
```
UIButton* b1 = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];

	b1.frame = CGRectMake(0.0, 0.0, 64.0, 64.0);

	[b1 addTarget:self action:@selector(fire) forControlEvents:UIControlEventTouchUpInside];

	[[[[CCDirector sharedDirector] openGLView] window] addSubview:b1];
```
Posted 1 year ago #
madclouds
Member
So I got everything set up to utilize UIButtons, but I've identified a new problem! Oh No's!

Problem
So when the first button is pressed on the fire method is launched when a finger is lifted off inside the button (UIControlEventTouchUpInside). The same thing happens for all the buttons. The problem is with the schedule which checks:
```
if ([b1 isHighlighted] && [b2 isHighlighted])
{
    [self fireFromThisSpot:ccp(##,##)];
}
```
So if both buttons are pressed it will shoot an endless stream of bullets AND when you lift your fingers it fires a bullet from b1 and b2! I get a stream of bullets and 2 additional bullets.

I only want 1 bullet to shoot if bother buttons are highlighted and not 3+ bullets.

Any feedback is greatly appreciated!
Posted 1 year ago #
max9xs
Member
hummmmm.......UIConrolEventTouchUpIndise and scheduler function will create conflicts.....

You will have to manage these things according to your requirement..
I am giving you some of tips to solve them -- how to manage, how to give priority of buttons..
you may check the app, for reference with this algorithem,,, [I know its somewt buggy with collision detection with the brick and all that , i was partly worked on it... but there is no use of any physics framework ...! (lol) ]

In my game there was 5 buttons..
```
b1 // left run
b2   // right run
b3 //jump
b4 //clone
b5 // sitting down
```
for b4 i was using touchUpInside method.. bcz once a pressing button there is no need to recognize touch
for b1,b2,b3,b4 i was using scheduler method...

in scheduler method, first checking how much button is pressed at current time..
```
if(totalpressed button==1)
{
   //checking indivudual buttons event
}

else if(totalpressed button==2)
 {
 if(right and left)
 {
 do nothing
}  

if(left and jump)
{
 jump with left side
}

if(right and jump)
{
 jump with right side
}

if(sitting down and left  || sitting down and right || sitting down and jump )
{
   //more prioritty to sitting - sitting  down action
   //sitting down and jump not possible so sitting down action
}

//in either cases do nothing..

}
```
Cheers,
Posted 1 year ago #
madclouds
Member

Thanks again Max! That's some quality code that I'm sure would be very useful for someone developing a game with a moving character. So thanks for sharing!

I found a solution to my problem as well. I just omitted the scheduler and check the isHighlighted conditionals in my fire method. This way only 1 bullet fires with a 2 button combination.

Erik

Posted 1 year ago #
hm50
Member

Are you using one of the UIWrappers for Cocos2d? Im just asking because, so far, my experience in mixing UIKit stuff with Cocos2d has been a pain in the arse to manage (removing,adding, etc), so I have been able to roll my own implementations for most UIKit items I needed (sliders, switches, option buttons, etc).

Posted 1 year ago #
calvin pratap samuel
Member

i want to set radio buttons to my application for the purpose of selection , and i don't have any idea about doing this,

here, i describe that,

[period : (radio button) FN (radio button) AN ] tis is wat i ask.. how can i do this, pls reply me.

Posted 7 months ago #

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