Detecting RawTouch 'Pressed' - GameCreators Forum

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Funnell7

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Posted: 23rd Feb 2015 10:26

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I'm using the RawTouch commands as my application requires MultiTouch. The problem I am having is that there appears to be no way to detect when the touch is 'Pressed'.

I am using the GetRawTouchType() command, but this only returns the following;

- Returns 1 for a short touch (the length of touch is determined when you release)
- Returns 2 for a hold
- Returns 3 for dragging

I also see a command GetRawTouchReleased(), but no GetRawTouchPressed().

Does anyone have a workaround for this?

Many thanks...

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Markus

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Posted: 23rd Feb 2015 10:33

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GetRawTouchCount

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baxslash

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Posted: 23rd Feb 2015 12:03

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You have to loop through the tough events. Personally I store a value for each touch using SetRawTouchValue and GetRawTouchValue. If this value does not contain a value it is a new "press".

It's best if you try it and test the results yourself to get your head around how raw touch events work.

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Funnell7

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Posted: 23rd Feb 2015 14:52

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Quote: "It's best if you try it and test the results yourself to get your head around how raw touch events work."

Unfortunately, that's what I've been trying to do for some time now

I am only interested in max 2 touches, all other touches can be disregarded. Take this small code snippet for example;

+ Code Snippet

do
	Touch1 = GetRawFirstTouchEvent(0)
	Touch2 = GetRawNextTouchEvent()
	Touch1X = GetRawTouchCurrentX(Touch1)
	Touch1Y = GetRawTouchCurrentY(Touch1)
	Touch2X = GetRawTouchCurrentX(Touch2)
	Touch2Y = GetRawTouchCurrentY(Touch2)
	Touch1Type = GetRawTouchType(Touch1)
	Touch2Type = GetRawTouchType(Touch2)
	
	Print(Touch1)
	Print(Touch1Type)

        Sync()
loop

As I am only interested in 2 touches, the above works fine in detecting both. But the issue I have is that Touch1Type and Touch2Type only returns a value when I release the touch. I use the X/Y of the two 'touches' to see if either is within a particular area. But I wanted to do this in combination with the 'press' state so that the event is triggered immediately and not after the release... Where am I going wrong?

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BatVink

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Posted: 23rd Feb 2015 21:18

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What Baxslash is saying is to use the GetRawTouchValue() when you detect the touch. If it's zero (or blank I forget if it's numeric or string) then it is a brand new touch - i.e this is your pressed event.

Immediately after, SetRawTouchValue() to 1. Any subsequent check will not be empty, thus it is no longer a pressed event.

Quidquid latine dictum sit, altum sonatur

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Funnell7

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Posted: 23rd Feb 2015 22:31 Edited at: 24th Feb 2015 00:09

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Baxslash, BatVink, I appreciate the help... But there is clearly something I just cannot grasp... I'm going round and round in circles here lol...

I was playing with the Get and SetRawTouch commands, but the problem I still have is that I need to know when it is a press only... Much like how GetPointerPressed() works, as in, when you press, this command sets to 1 for a fraction of a second... All of the commands I have tried with RawTouch either do not change states until after a second, or the value remains...

Again, I appreciate the help, but I've managed to find a workaround which meets my needs. I am using GetRawTouchTime() < 0.000001 then invoking the action. This ensures the action is called only once... Maybe I'm not explaining it very well, so here's the test code I was working with...

SetWindowTitle("Test Project")
SetWindowSize(640, 1138, 0)
SetVirtualResolution(640, 1138)
SetPrintSize(32)

global Touch1
global Touch1X#
global Touch1Y#
global Touch1Time#

global Touch2
global Touch2X#
global Touch2Y#
global Touch2Time#

global Count

do
	Print("Touch 1 Time = " + Str(Touch1Time#))
	Print("Touch 1 X = " + Str(Touch1X#))
	Print("Touch 2 Time = " + Str(Touch2Time#))
	Print("Touch 2 X = " + Str(Touch2X#))
	Print("Count = " + Str(Count))
	
	Touch1 = GetRawFirstTouchEvent(1)
	Touch2 = GetRawNextTouchEvent()
	Touch1X# = GetRawTouchCurrentX(Touch1)
	Touch1Y# = GetRawTouchCurrentY(Touch1)
	Touch2X# = GetRawTouchCurrentX(Touch2)
	Touch2Y# = GetRawTouchCurrentY(Touch2)
	Touch1Time# = GetRawTouchTime(Touch1)
	Touch2Time# = GetRawTouchTime(Touch2)
	
	if (Touch1Time# < 0.000001 AND Touch1X# > 0) OR (Touch2Time# < 0.000001 AND Touch2X# > 0) // Checking to see if either of the touch events are in a particular area, in this case, for testing purposes, the whole screen
		inc Count // I only want to increment 'Count' when the device is pressed, and only pressed. A hold and/or a drag event should not continue to increment 'Count' 
	endif

Sync()
loop

+ Code Snippet

SetWindowTitle("Test Project")
SetWindowSize(640, 1138, 0)
SetVirtualResolution(640, 1138)
SetPrintSize(32)

global Touch1
global Touch1X#
global Touch1Y#
global Touch1Time#

global Touch2
global Touch2X#
global Touch2Y#
global Touch2Time#

global Count

do
	Print("Touch 1 Time = " + Str(Touch1Time#))
	Print("Touch 1 X = " + Str(Touch1X#))
	Print("Touch 2 Time = " + Str(Touch2Time#))
	Print("Touch 2 X = " + Str(Touch2X#))
	Print("Count = " + Str(Count))
	
	Touch1 = GetRawFirstTouchEvent(1)
	Touch2 = GetRawNextTouchEvent()
	Touch1X# = GetRawTouchCurrentX(Touch1)
	Touch1Y# = GetRawTouchCurrentY(Touch1)
	Touch2X# = GetRawTouchCurrentX(Touch2)
	Touch2Y# = GetRawTouchCurrentY(Touch2)
	Touch1Time# = GetRawTouchTime(Touch1)
	Touch2Time# = GetRawTouchTime(Touch2)
	
	if (Touch1Time# < 0.000001 AND Touch1X# > 0) OR (Touch2Time# < 0.000001 AND Touch2X# > 0) // Checking to see if either of the touch events are in a particular area, in this case, for testing purposes, the whole screen
		inc Count // I only want to increment 'Count' when the device is pressed, and only pressed. A hold and/or a drag event should not continue to increment 'Count' 
	endif

    Sync()
loop

EDIT: I think the penny has just dropped and I get what you are both suggesting. I'll give it a try tomorrow, for now though, this work around will have to do

Thanks again.

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Markus

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Posted: 24th Feb 2015 17:49

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you wrote u need Pressed,
that means GetRawTouchCount goto 2 entrys and back to zero.

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