10 replies to this topic

[peter879]

I am new to GML, using Gamemaker HTML5.

I found code online for creating virtual keys.

My main object moves up, down, left, right using arrow keys in its keyboard events.

I made an invisible object with this codes:

step event:

global.vkup = YoYo_AddVirtualKey(400, view_yview+320, 64, 64, vk_up );
YoYo_ShowVirtualKey( global.vkup );

global.vkright = YoYo_AddVirtualKey( 464, view_yview+340, 64, 64, vk_right );
YoYo_ShowVirtualKey( global.vkright );

global.vkdown = YoYo_AddVirtualKey( 400, view_yview+364, 64, 64, vk_down );
YoYo_ShowVirtualKey( global.vkdown );

global.vkleft = YoYo_AddVirtualKey( 336, view_yview+340, 64, 64, vk_left );
YoYo_ShowVirtualKey( global.vkleft );

Draw event:

draw_sprite(spr_Up,-1,400, view_yview+320);
draw_sprite(spr_Right,-1,464, view_yview+340);
draw_sprite(spr_Down,-1,400, view_yview+364);
draw_sprite(spr_Left,-1,336, view_yview+340);

The problem is that the arrows appear on screen, but touching them has no effect.

I have struggled with this problem for a whole week.

Thank you.

NB: I asked this question in the html forum but got no reply. Don’t know how to remove the topic from there to avoid double post.

[annihilator127]

Does it work if you click the virtual keys with a mouse?
Some touch screens don't send a click when you tap the screen; you have to double-tap or press a button.

[peter879]

Does it work if you click the virtual keys with a mouse?
Some touch screens don't send a click when you tap the screen; you have to double-tap or press a button.

Thank you for your reply.
No reaction to mouse either. I think something wrong with the code but can't figure what. Any ideas?

[peter879]

Does it work if you click the virtual keys with a mouse?
Some touch screens don't send a click when you tap the screen; you have to double-tap or press a button.

I have included a link to the file here.

Someone out there who can make the virtual keys work?

Thanks!

[Nocturne]

the virtual keys are defined as having an absolute position on the SCREEN not in the view. So, if your viewport is, for example, 640*480, then you should defien your virtual keys as being within that area, NOT using the relative coordinates as you are using just now. So, your code should probably be :

global.vkup = YoYo_AddVirtualKey(400, 320, 64, 64, vk_up );
global.vkright = YoYo_AddVirtualKey( 464, 340, 64, 64, vk_right );
global.vkdown = YoYo_AddVirtualKey( 400, 364, 64, 64, vk_down );
global.vkleft = YoYo_AddVirtualKey( 336, 340, 64, 64, vk_left );

[peter879]

the virtual keys are defined as having an absolute position on the SCREEN not in the view. So, if your viewport is, for example, 640*480, then you should defien your virtual keys as being within that area, NOT using the relative coordinates as you are using just now. So, your code should probably be :

global.vkup = YoYo_AddVirtualKey(400, 320, 64, 64, vk_up );
global.vkright = YoYo_AddVirtualKey( 464, 340, 64, 64, vk_right );
global.vkdown = YoYo_AddVirtualKey( 400, 364, 64, 64, vk_down );
global.vkleft = YoYo_AddVirtualKey( 336, 340, 64, 64, vk_left );

It works now. Your explanation has solved my problem.

Thank you.

You deserve +5.

[Javex]

hi, i'm with a problem with that


i used the same code, but, the buttons not show with a moviment of the views...
they are static

[peter879]

hi, i'm with a problem with that


i used the same code, but, the buttons not show with a moviment of the views...
they are static

I think the drawing part of the keys needs to be written differently.

ie: virtual key: global.vkup = YoYo_AddVirtualKey(400, 320, 64, 64, vk_up );

draw: draw_sprite(spr_Up,-1,400, view_yview+320);

[Nocturne]

No that's not it. They need to be drawn in the Draw GUI event with an ABSOLUTE value. They are no longer relative to the view, but rather static based on the screen/canvas size.

PS: This functionaility has changed since the topic was made!!!

[peter879]

No that's not it. They need to be drawn in the Draw GUI event with an ABSOLUTE value. They are no longer relative to the view, but rather static based on the screen/canvas size.

PS: This functionaility has changed since the topic was made!!!

Oh, didn't know that!
Because i haven't worked with views for quite some time, but when i did some months ago, it worked fine.

[Nocturne]

It would... But the last GM:S update has now removed the vk functions from the relative positioning in a room and made them have an absolute screen position based on the GUI size (as used by the draw gui event). You can find more information here: http://gmc.yoyogames...howtopic=561373