Physics Finger Ball Hit Example?
Posted on Mon, 2010-07-05 07:34
Hi, maybe this is a dumb question?, but I am very new to physics here...
I want to do something like the pool table game example, but I want to hit the white ball with my finger... :)
Is there an example on how to simulate a ball hit with the finger touch?
THANKS!!!
Replies
Posted on Mon, 2010-07-05 08:09
#2
Hi Mike, Yeah, Game Edition, I looked around but didn't found anything so yes I guess there's not...
Thanks.
Posted on Mon, 2010-07-05 08:55
#3
You didn't ask for a suggestion, but hey...
how about you create a circle, set its alpha value to 0, attach a circular physic body to it, and let this circle follow your touch event. With the correct collision filtering/masking you can then use your finger to hit the ball.
Posted on Mon, 2010-07-05 09:15
#4
Yeah I've been testing with a circle; the collision works, but still trying to figure the speed thing... I am thinking about maybe create a variable that collects the start and end point and using the collision use the applyForce somehow with the values of the start/end touch event variables... I'll test that later.
Thank for your suggestion!
Bob.
Posted on Mon, 2010-07-05 09:45
#5
Hmm.... recognizing and register the "touch begin" point... getTimer()... check "collision" with a simple distance to object-center - radius algorithm (on move events)... when hit... check for the time since start.. calculate the distance of the move... use the time to calculate the speed... and hence the force.. the direction (vector)... apply that to the center of the hit object.
Would be enough for simple "marble" rolling games (where you ignore where you hit the object).
Posted on Mon, 2010-07-05 11:31
#6
Hmmm, I'll need to read more about physic then... I though the box library will help a little more... :)
Thanks a lot for the comments and ideas!
iBob.
Example... not that I know off. You are talking about the physics in the game edition, right?