Tracing an onscreen line for touch devices

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Post » Thu May 02, 2013 5:21 pm

Hi everyone;

my team is making a Japanese language learning app for Android and iOS; and I would like the user to be able to draw a line onscreen to trace out a kanji character. There needs to be a line following the user's finger as he/she traces onscreen - the point being to learn how to write specific kanji characters.

Here is an example of what I mean in the second to last screenshot on this app:
https://play.google.com/store/apps/details?id=com.Obenkyo

Is this possible in Construct2? I cant find any documentation on how to do this and am currently stumped. Thank you for any help!
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Post » Thu May 02, 2013 6:50 pm

I've don simular things
have a invisible bullet with a very high speed
set angle toward touch.x & touch.y
have a 10 by 10 sprite and set position to touch.x and touch.y
have the bullet speed 0 if overlapping the 10 by 10 sprite
spawn a circle dot the size you want the line if bullet speed is greater than 0
this will spawn a dot every tick the bullet is moving making it appear as a line
sosensible2013-05-02 18:53:23
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Post » Tue May 07, 2013 5:28 pm

Thank you, I will give it a try!
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