Warning: This code is REALLY old, not really commented (and the comments added are in Swedish) and .. yeah that's it.
This is an implementation of Verlet itegration to achieve a nice cloth simulation with tearing as well. You can see it in action here: https://www.youtube.com/watch?v=G05M_Y6NQVM
- You need Allegro
- You need to create your own project (I only had an old one for VS and I no longer user Windows)
- Probably some more when you build it
- Everything is seemingly implemented in the .h files. I don't remember why.
- Jvector2.h is a 2D vector with some helper methods.
- JVerletPoint.h is simply a verlet point. Read the wiki to know about it.
- JVerletConstraint.h is the constraints between verlet points that keeps them together. It includes some different versions. JVerletFixedLengthConstraint should not allow for any elasticity, but actually looking at the code it seems like it can have that, oops. JVerletTearConstraint will remove one of its verlet points if the distance between them is too far, I think. This is used to make the tearing of the cloth later. JVerletFixedPositionConstraint is a constraints applied to ONE verlet point. You can apply this to make a point fixed in its position forever.
- Example_Verlet_Softbody.h and Example_Verlet_Cloth.h are sort of a "scenarios" where it only is used to setup a bunch of verlet points and constraints into nice visual examples.
- Main.cpp contains a bunch of helper methods for making strings from various types, I think it is used to display coordinates and so on on the screen. It also contains helper methods for drawing stuff on the screen, like dots and lines (linje = line in swedish). It then sets up allegro and creates the window and the "Example_x_xx" mentioned above and kicks off everything with a runloop. You can uncomment the stuff in the while loop to switch between the two examples.
Feel free to ask me for help about stuff (email is in profile)
If you use this code to make some new AAA title I will expect 10% of your profits.