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1. POP BALLOON IN CONTRAPTION MAKER DEAD MAN WALK FULL
2. POP BALLOON IN CONTRAPTION MAKER DEAD MAN WALK CODE

Maybe use the spring joint for all the points between the rope endpoints? So browsing through the available constraints, using a slide joint for the two ends of the rope seems obvious. It does have a whole bunch of different types of constraints though, so my first thought was to use those to implement ropes. The Chipmunk engine doesn't have built-in ropes – easy decision. I didn't use the built-in ropes in the Chipmunk physics engine. The relative sizes of the little guy, the dog, the mouse, and the soccer ball are game design decisions that bent reality for better game play possibilities. This is fairly typical in the craft of game design and development in that you are always making various trade-offs.

POP BALLOON IN CONTRAPTION MAKER DEAD MAN WALK CODE

The performance was better because the code didn't have to calculate all the collision and physics needed for the whole length of the rope cutting down drastically on the calculations needed. This was both a game design and a performance (speed of execution) decision. So their only game play function is to transfer forces between the parts attached to either end. For example, in their final incarnation, the ropes don't collide with anything. Deciding exactly what elements or rope behavior to implement involved trade-offs affecting both performance and also design. The first decision made was exactly how much of a rope's behavior I was going to model.

This is just a quick overview of how I went about implementing them in CM and some of the potholes I hit along the way. It was mostly traveling development paths that others have already blazed and then making whatever adjustments were needed for my specific needs. Getting realistic ropes working required tackling several different problems.

POP BALLOON IN CONTRAPTION MAKER DEAD MAN WALK FULL

After going through Steam's early access program, the full game was released on Steam in the summer of 2014. It was built using a modified version of the Loom Engine, along with a few different libraries/components including cocos2dx and Chipmunk. We were all pretty excited about the successful balloon-popping Rube Goldberg machine.Contraption Maker (CM) is a sandbox physics game that I developed along with Spotkin. They started right after school around 4 p.m., recorded the video shown above a little after 7 p.m., and when I got home from my meeting at 8 p.m. We had multiple devices capturing stills and video, and about 17 spectators. Once as a test run to make sure it worked, and once for filming so the video could be submitted to the teacher. (I’m sorry I wasn’t able to get good still shots of the chair-wrench combination by the time they were finishing this up and hadn’t even done a test run yet, I was running late for a meeting and I also didn’t want to make the crowd wait for me to take more pictures.)

N- Added bonus with popped balloon: children below it get soaked! M- Target arm swings to pierce water balloon L- Falling chair triggers wrench to hit target on Drenchinator J- Cardboard triggers mousetrap, which pulls string I- Ball releases spring-loaded cardboard, which flips H- Ball hits another ball at end of tube, which travels on ramp G- Wooden plate triggers ball to go down tube He just wanted to feel involved during the three hours of setup time.)Į- Ball triggers electric car, which drives along track (Ignore the child he was not part of the machine. (Check out our summertime soaking contraption here.) A Rube Goldberg machine is a “contraption, invention, device or apparatus that is deliberately over-engineered or overdone to perform a very simple task in a very complicated fashion, usually including a chain reaction.” (Thanks, Wikipedia!) She enlisted the help of her grandpa (an engineer), who asked to use our Drenchinator 3000. This was a super-deluxe school project that took 3 hours to set up yesterday afternoon in our garage/driveway, and the result was a very entertaining 17 seconds.įor a 4th grade project, my niece was required to create a Rube Goldberg machine that took at least 10 steps to pop a balloon. How do you pop a balloon? It takes 13 steps, if you do it Rube Goldberg style.