Hi Guys got another nerve-wrecking coursework at school, am suppose to create an application in Processing and reacTIVISION as usual, but this time a player moves the object along a predefined path, and if he's on the right path i send a tactile feedback to the Arduino Boarding or a Visual Feedback depending on the scenario. my issues is the best way to draw a path and detecting when object is outside the path, P.S: I will prefer not to get access to codes but an explanation, because i wud love to defend this in the future.

I do not know about the graphics framework you are using but I have worked extensively with qt c++'s graphics framework and I believe I can do this with it. the algorithm is probably the same. is that okay?

Sure i don't mind as long as i understand the algorithm i can port it to any language, because processing is still Java, and Java and C++ are not too different that much, i would appreciate it a lot.

After consulting my lecturer he said i could use Shapes and detect if the point is within those shapes, though yes this works, it feels a bit "hackish" what do you think ? its not about taking short-cuts, its about implementating it the right way, I was assuming i use co-ordinates and detect if the user is outside that co-ordinate. anyway I'm still open to more ideas.

okay, can the framework you are using locate items at certain positions an api like graphicsitem *itemAt(point).
qt C++ has events methods that are called when certain things are happening on the scene. does your framework have that too?

Actually its more of the same concept of HTML5 Canvas, you can't really detect an item at a certain position because everything is "painted", but I can create the Shapes as class and store it's offsets as vector, but i will have to traverse all the shapes to check if current location of user is within the any of those shapes. No it doesn't have

pc guru: use co-ordinates and detect if the user is outside that co-ordinate.

#Couldnt have said it better, this is what most games i have seen use

Javanian:

#Couldnt have said it better, this is what most games i have seen use

Thanks I will work on that tomorrow, now i feel confident enough to tackle this, i will post my feedback on the implementations after i have done it, thanks alot @javanian and @lordZouga

sounds like the bounding rectangle cases typical in intro to game programming books.

Thanks all, though had to settle for the bounding box collision, as trying the distance between the addition of the two radius was proving tough and accuracy is not really something being marked for.