This is a Mass Aggregate application where multiple anchors are created that hold the web in place. Use the mouse to grab the web at a certain point to move it around (the red dot in the middle represents the spider).
NOTE: the web doesn't always compile right. Sometimes open it multiple times to get the right result. I'm working on it!
Shoots a brick into a wall. Because of the way in which collisions are calculated and updated, the wall is made up of a single brick that is subdivided whenever the object hits it and the forces acting upon the wall are then distributed among those bricks (try setting the mass to 0 and then fire).
To reset the application, press 'R'. To fire the brick, press SPACEBAR. To toggle pause, press 'P' and to increase/decrease the mass of the brick, press +/- to change camera position, hold the right mouse-button.