In this mini-programming-world a customer should be guided through a supermarket, solving problems in the process. The customer is controlled by a small set of simple instructions. With this program, the user should be able to learn simple programming concepts.
The landscape the actor can move around in, is a 2-dimensional overview of a supermarket, separated into single tiles. The structure of the supermarket can vary from each exercise. Additionally, the supermarket is surrounded by walls and cannot be exited. There can be a shelf on a tile. A tile with a shelf cannot be entered and no other object can be on the same tile as the shelf. Furthermore, a shopping cart can be on a tile. The customer can move the shopping cart by walking into it if the next tile is not occupied by a shelf or another cart. Finally, there can be a single present on a tile. A present is small, and therefore it can share the tile with a shopping cart. The customer can pick up the present if he stands on the same tile.
The customer who wants to buy presents in a supermarket. The customer is always on a tile in the supermarket and looks in one of the four directions.
The customer can interact with the environment by pushing shopping carts and picking up presents into his basket.
void forward()The customer walks a tile forwards. This will push away a shopping cart, if one is on that tile.void turnLeft()The customer turns 90° left.void turnRight()The customer turns 90° right.void pickUp()The customer picks up a present on the current tile and puts it in his basket.void putDown()The customer takes a present out of his basket and puts it onto the ground.boolean wallAhead()Checks whether there is a wall on the tile in front of the actor.boolean cartAhead()Checks whether there is a cart on the tile in front of the actor.boolean pushable()Checks whether the cart in front of the customer can be pushed one tile.boolean presentHere()Checks whether there is a present at the current location.boolean basketEmpty()Checks whether the customer's basket is empty.