Algodoo

I think you need to learn more about Algodoo scripting because the blocks and the ground (plane) do not have any defined names in them. For example, you say "foodsource is in food blocks" but I do not see a variable named "foodsource" in any of the food blocks. Also, you say the ground has a custom material name, but it does not. The material name is "" (which is just an empty placeholder for text).

As a general rule, you should never not define a variable and then later check to see if it was defined. That is poor programming practice. You should define all variables, and give them some initial value such as 0 (zero). Then in the script, you can check to see if the variable's value is zero or some non-zero number.

If you have any technical questions about scripting, ask me here and I will try to answer them for you.

thats kind of strange, how the variables didnt appear, i swear i added them before posting the scene

You used [VarName] = [varValue] didn't you?
Do scene.my.[varName] = [varvalue] instead.
The first variable will not save with the scene.
The second is serialized (how do you spell that?!) and will save in the scene.