This is the forth Video Tutorial from 4D frog.com. This one is a very simple animation scene using Motion Dynamics.
This time beside the you tube video, I have the step by step tutorial as well for those who do not have high speed internet. Hope you enjoy it.

1-Create an object or use an existing object. I my case I’m using a similar object to my Low Poly Octopus tutorial.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

2- Now I want to array my space octopus, go to Mo Graph in the top menu and click on Cloner Object. In your Object Window, drop you object inside of the Cloner Object.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

3-Go to Cloner Object attribute and change the Mode to Grid Array, by default it is set to Linear.

4-Have the Counts 3 in every direction, so It’ll create 27 objects. (If they are close to each other, you can change the size in all different directions.)

5-Now Create a Floor object, because we are trying to see how our group of octopuses will react to this object. I change the color attribute for the Floor Object to have better visibility.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

6-Hold on shift and click on both Cloner Object and Floor in your Object window. Now right click and under Mo Graph tags choose Rigid Body. This will assign the Rigid Body to both of the objects.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

7-Now click on play and watch it. It is pretty cool.  27 octopuses drop to the floor and act like the real life.
8-In the next step I add a box to the scene, make sure to assign the same Rigid Body tag to the box and play it again, this time they will all react to the box as well.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

9-In my last step, I convert my box to editable polygon and take out the top face and this time after hitting play, some of the octopuses will trap inside the box.

Cinema4D-AnimationTutorial-Basic

Cinema4D-AnimationTutorial-Basic

Hope you like it and with this simple technique you can create many different creative scenes. Just think about a nice story and create it. Originally my story was how my space octopus giving birth in the space and all the kids fell to the earth, but I thought that might be too much for a simple tutorial!