SetViewOffset() cause button input issues on android

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Hughbus

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Posted: 1st Oct 2019 13:15

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Seems to be an issue only on Android device, not iOS -
When using SetViewOffset() to scroll a sprite based level, the hitboxes for virtual buttons also get moved even though the virtual button visual is still fixed to the screen correctly. Id expect the hitboxes to remain with the screen/virtual button visual, not offset with the rest of the 2d sprites.

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blink0k

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Posted: 1st Oct 2019 23:09

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So you're using FixEditBoxToScreen() and they are still moving?

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Hughbus

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Posted: 2nd Oct 2019 13:17

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I'm having the problem with virtual buttons, not edit boxes. I couldn't find a similar function for virtual buttons. It is strange because although the visual of the button is static, the hitbox that recognises presses, etc. is moving with the rest of the game sprites.

Actually seems to be an issue on windows as well. seems to work as expected (hotboxes and buttons stay in the same position) on ios on possibly my mac only

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fubarpk

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Posted: 2nd Oct 2019 16:20

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This works fine for me
the button stays in the same place and does not move
the background sprites all move with left/right arrows
I cant get the button to fail

+ Code Snippet


//background infinite scrolling - good for jetpack joyride style of gameplay

//made for iphone resolution - change for your own prefered
SetVirtualResolution(960,640)

//background array
dim BG[10]

//set background sprite
for num = 1 to 9
	BG[num] = CreateSprite (0)
	SetSpriteSize(BG[num],64,64)
	SetSpriteColor(BG[num],random(1,255),random(2,255),random(1,255),255)
	SetSpritePosition(BG[num],random(0,960),random(0,640))
next num
//main loop

    AddVirtualButton(1,100,100,100)
Do


    if GetRawKeyState(37)
		x=x+1
	endif
	if GetRawKeyState(39)
		x=x-1
	endif
		
	if GetVirtualButtonState(1)
		Print("Button Works")
	endif		
    
    //offsetting
    SetViewOffset (x, 0)

    sync()
Loop

fubarpk
fubarpk on Itch...………...https://fubarpk.itch.io/
fubarpk on googleplay..https://play.google.com/store/apps/developer?id=fubarpk

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ruckertheron

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Posted: 6th Oct 2019 23:52 Edited at: 6th Oct 2019 23:53

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Actually the same thing happened for me.. The fix around is to do this to every button

+ Code Snippet

            SetVirtualButtonPosition( VBID, GetViewOffsetX() - vx#, GetViewOffsetY() - vy#)

if you have a button that you set like this:

+ Code Snippet

AddVirtualButton(1,100,100,100)

You have to put this every time you use SetViewOffset()

+ Code Snippet

SetVirtualButtonPosition(1,GetViewOffsetX()-100,GetViewOffsetY()-100)

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Hughbus

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Posted: 11th Oct 2019 14:38

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Ah cool, so its not just me - was thinking I was crazy. It does work without this code on my iPhone and mac, however the same project on android and windows needs this correction every time I use SetViewOffset(). I assume its a bug of some sort then since its behaving different on various platforms?

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ruckertheron

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Posted: 13th Oct 2019 04:05 Edited at: 24th Oct 2019 13:03

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Absolutely

Quote: "
Ah cool, so its not just me - was thinking I was crazy. It does work without this code on my iPhone and mac, however the same project on android and windows needs this correction every time I use SetViewOffset(). I assume its a bug of some sort then since its behaving different on various platform"

The controls do seem flawed in doing this work around.. They seemed much smoother before this bug.. Im hoping they fix this instead of pushing it to then backburner..

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