I now have code for a grid-square class. Grid-square objects

• know where they are
• how many ogres, donkeys, parrots and snakes they contain (initially zero of each)
• can increment and decrement the numbers of these creatures (and will sing out if the numbers ever become negative or if there is more than 1 ogre)
• can report these numbers
• can decide whether the ogre overwhelms the other creatures or vice versa (and will sing out if I try to have a battle involving zero ogres)

Now I have to construct a row as a collection of grid-squares and create methods to

• add an ogre to a random square
• add donkeys, parrots and snakes at random to the first square in the grid
• move the denizens about at random
• provoke fights between the ogre and the others in whatever grid-square he’s in.

Then I have to construct a swamp as a collection of rows and develop 2-D versions of the random-movement methods.

Poor ogre – no matter what, eventually he’s going to be brayed, squawked or venomed (or combinations thereof) out of existence.