The power and angel start at some default value. The screen shows where the cannonball hits with those values. As the user presses on the up/down angel or the more/less power button, the cannonball moves to a new place. If the cannonball ever hits the target, you win.If there is a fire button, the game works like this:
The power and angel start at some default value. As the user presses on the up/down angel or the more/less power button, the display of these numbers changes. When the fire button is pressed, the cannonball appears in flight. If the cannonball ever hits the target, you win.I will provide you with a cannonball class and a button class.
The points table
| Points | Task |
| 3 | Has at least one working button |
| 3 | Has more than one working button |
| 3 | Uses a class beyond the button class, the trebuchet class and the main class |
| 3 | Does something with the keyboard. |
| 3 | Displays values for angle and power |
| 3 | Those values change when the button or keyboard is pressed |
| 3 | Shows where the cannonball lands |
| 3 | Has an explosion or a message when the target is hit |
| 24 | Subtotal of all above. |
| 2 | Has a "fire" button |
| 2 | Insults the user at random times in a random way (three insult minimum) |
| 1 | The target wanders randomly. |
| 1 | It takes multiple hits to kill the target. |
| 2 | You can hit some part of the background (or any non-primary-target) |
| 2 | A bird or cloud moves or soemthing moves. |
| 1 | Keeps a count of shots taken |
| 3 | There are two players who shoot at each other. |
| 2 | Has a cheat button (sets the cannon to winning values) |
| 1 | Has a move button (the target moves when you press this) |
| -3 | Each day after Wed Apr 20th. |