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Index › Programming Questions & Help › Programs › Collision Detection
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Collision Detection (Read 985 times)
JScriptChan
Collision Detection
Jul 19th, 2009, 2:47am  
Hello everyone.I want to draw 3 circles,A B and C,where I can drag A with mouse,pull A to B to boost B and then make it push C.I tired a few times to design but failed.How to make a realistic collision detection model in achieving the effect?Could you show me some code or references?Thank you.
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more joy,more practice
JScriptChan 568009148  
PhiLho 
Re: Collision Detection
Reply #1 - Jul 19th, 2009, 2:56am  
Collision detection of circles is quite simple: you just check that dist() between two center of circles is below the sum of their radii.
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JScriptChan
Re: Collision Detection
Reply #2 - Jul 19th, 2009, 3:26am  
I used some physics principles learnt in high school,but in coveying the motivation energy of one circle to all its indirect neighbours(its neighbours's neighbour),it seemed not very easy in code implementation. SmileyThis problem is theoretically easy...And I think perhaps I need some tec of multiple threads... Could you show a reference?Thank you.
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more joy,more practice
JScriptChan 568009148  
PhiLho 
Re: Collision Detection
Reply #3 - Jul 19th, 2009, 3:31am  
You don't really need multiple threads there.
It depends if you want to do all the work yourself or are mostly interested by a result. In the latter case, you can check BoxWrap2D (search it in the forum), it would do all the energy/restitution stuff for you.
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