iPhone Game Development

Level 3 Implementation

The third level is a puzzle. The main character is located in a room at the top of the level that contains three buttons. He will accomplish his goal or fail while staying in that room. The rest of the level consists of nine cells connected with gates that are controlled by the buttons in the upper room. Inside the cells are a mouse, a cat, and cheese. The cat is located in the upper-left cell, the mouse in the upper right, and the cheese in the bottom left.

The player must move the main character to press the buttons in a way that will open gates for the mouse, allowing it to reach the cheese while avoiding the cat. Each time the player opens a gate next to the cell occupied by the mouse, the mouse will move into the open cell. Afterward, the cat will move into a random cell as well. If the cat and mouse end up in the same cell, the cat will eat the mouse and the player will lose. If the mouse ends up in the cell with the cheese, the player will win.

This will require the following resources:

• A tile level showing the upper room and the nine cells, divided by walls. The walls between each cell should include an open space because the gates will be entities that are drawn on top of the walls, not a part of the tile level.

• The Tom sprite we used before.

• The button entities, with unpressed and pressed frames. There will be three buttons, each a different color.

• The gates (one vertically and one horizontally aligned), open and closed, with colored lights to indicate ...