35 replies to this topic

[7ravenstudios]

I think i understood how to manage it. Seem to work fine.

[ZigZaggh]

Thank you for sharing this code I really like it!
 

I get some weird bouncing back and getting stuck effects, when I set the room speed up to 60, it is not on all swipes but on some, why am I getting this annoying behavior are others experiencing this?
 

I only get this bug swiping on android devices, in windows with mouse swipes I do not get this behavior!
 

I am unable to test iOS.
 

Any solutions, suggestions?

[Manuel777]

I was making some menues last night and noticed an issue too, maybe the same, not sure.. I have the feeling that (the one I found) is because of the way we swipe with our fingers and the Nexus 7 touchscreen being far more sensitive than the one I used when developing this engine.

Before releasing the screen we tend to "slow down" and thus making the engine slow down as well, as it copies the speed of the finger to scroll, when releasing and slowing own it looses some of its speed and the friction time takes less. I solved it multiipliying "dragy" (on the step event) by something like 0.98 on large lists, but the issue is still there.. on old touchscreens, where the refresh rate and sensitiveness is lower, this issues appears to be nonexistant.

 

For the sake of simplicity I wont rewrite the engine, it is made so people can understand and learn from it, there are ways we could calculate the desired speed of a swipe and apply it to the actual scroll, but all of this requires more complicated stuff than the provided engine.

 

Just to make sure, have you modified something (maybe on the step event?) because what you describe appears to be worse than what i've described (im not getting no bouncing back nor stucks)

[ZigZaggh]

I made a small example code, so you can try it your self, I rewrote almost everything to make it horizontal scrolling, but I did not touch the important step code, so it should not have an impact. I made the list rather long, so it is easier to trigger the bug.
 

Link to example code:

 

I have a Nexus S and a Nexus 4 which I have done some testing on with my code!:
 

Room speed 60

Nexus 4: Has both mentioned bugs

Nexus S: The bugs occur allot more than on the Nexus 4!
 

Room speed 30

Nexus 4: I am unable to trigger the bug!

Nexus S: Still has it, but rather seldom.

 

Does the Nexus S count as old touch screen, when you mentioned those?

 

Try my code and see what happens

[Manuel777]

Link is not showing up..?

[ZigZaggh]

Lol that is because I forgot to post it!

 

Link:

https://dl.dropboxus...temListTest.gmz

[Manuel777]

It could be that you have set it to both landscape and portrait, and you are not using any view adjusting for multiple resolutions or screen rotation. After setting it just to landscape it seemed to work just fine..

[ZigZaggh]

It does not help, i get the same weird behavior! On project I am working on I have the screen locked to landscape and it does the same, I even get the same behavior on your original code from this topic.
 

The only place where it runs perfectly is on windows.
 

Interesting that you are not experiencing this on your Nexus 7.
 

It does not occur all the time about 50%, so it ruins the experience of a nice swiping translation to the screen!

[johnandbuddy]

Hey,

Great job! it is so fluid! 

I have a question.

In my game I have a pretty drawn background, and I want you use your sliding mechanic,  but I can't figure out how to make it scroll the background. This system seems to just push the objects up or down thus giving the illusion of movement. what I want is to have a bunch of objects that can be clicked, placed down a long room. With a background image at top, that it fades to black at the bottom of the first screen full, so as you scroll down its just black. can your system be tweaked to achieve this, or do i have to start from scratch

[Manuel777]

You will have to modify how the engine works a little bit, what you are looking for is how to move the views, and I think it was posted in the previous page.

You could also do it without modifiying the engine, but modifiying how you draw your objects instead, but Im not sure wich option will suit your game the best.. it may be more complicated to do..

[johnandbuddy]

You will have to modify how the engine works a little bit, what you are looking for is how to move the views, and I think it was posted in the previous page.

You could also do it without modifiying the engine, but modifiying how you draw your objects instead, but Im not sure wich option will suit your game the best.. it may be more complicated to do..

Thanks for the help. But I actually found a different scrolling example, and it needed to be tweaked less then your system to fit my game. I borrowed aspects of your system to make a hybrid system. Thanks for the help

[FlavoursGames]

what if you want to replace draw sprite and text by objects ?

[Manuel777]

what if you want to replace draw sprite and text by objects ?

Well, you could, but that would be horribly slow in comparission.. actually the whole point of the scripts is to avoid doing just that   

[Disent]

Not bad at all.

[oakennnnn]

I've just adapted this to my IOS game and I can tell you that it is a god send. Well done and an excellent job.

[ewagstaff]

Like everyone else has said, incredibly useful. Thanks for posting!