Introduction to Programming with Greenfoot: Object–Oriented Programming in Java™ with Games and Simulations, First Edition

Chapter 2. The first program: Little Crab

topics:	writing code: movement, turning, reacting to the screen edges
concepts:	source code, method call, parameter, sequence, if-statement

In the previous chapter, we discussed how to use existing Greenfoot scenarios: We have created objects, invoked methods, and played a game.

Now, we shall start to make our own game.

The Little Crab scenario

The scenario we use for this chapter is called little-crab. You will find this scenario in the book projects for this book.

The scenario you see should look similar to Figure 2.1.???

Figure 2.1. The Little Crab scenario

Example . 

Exercise 2.1. Start Greenfoot and open the ...