In this recipe, we will declare a local variable with an initial value to define the number of units that a bird must advance. Then we will pass this variable as a parameter for the
move procedure. The variable will allow us to use a descriptive name instead of a number as a parameter, and therefore it will be easier to understand the code.
Follow these steps to set a simple scene with four birds of different classes and a fence:
GrassyProject.a3pas the desired template for the new project and click OK. Alice will display a grassy ...