Missiles
Battleships meets Minesweeper.
A game is played on an 8×8 grid of squares. Ten enemy military buildings each occupying one square and are hidden from the player. At the start of the game a UAV may reveal the location of a building. Either the building itself, or an adjacent square horizontally, vertically or diagonally. A player has 50 missiles (turns) to correctly target the ten installations by entering an x and y coordinate to fire at. The state of the board is shown to the player after each missile is launched as follows:
– “-” an unknown square.
– “H” a building that has been correctly targeted and hit.
– “x” a miss.
– “u” a UAV marker.
Make
Write a program to play the game, positioning the buildings randomly in the grid.
Use this boilerplate code as a starting point:
Success Criteria
Remember to add a comment before a subprogram, selection or iteration statement to explain its purpose.
Complete the subprogram called `get_target` that:
- Prompts the user to enter an x and y target.
- Returns a list of the x and y coordinates as integers.
Complete the subprogram called `place_buildings` that:
- Places ten buildings on the board, each occupying one square.
- Ensures that two buildings cannot occupy the same square.
Complete the subprogram called `uav` that:
- Scans the inside 7×7 area of the board (i.e. not the outside squares).
- If a building exists on that square a “u” is placed either on the square, or the square above, below, left or right randomly.
Complete the subprogram called `hit` that:
- Takes a paramter that is the list of x, y coordinates entered by the player.
- If the target square is a hidden building it sets the square to be a “H” (hit).
- If the target square is not a hidden building it sets the square to be a “x” (miss).
Complete the subprogram called `draw_board` that:
- Outputs the board to the player.
Complete the subprogram called `play_game` that:
- Calls `place_buildings` to place the buildings on the game board.
- Calls `uav` to place the uav markers on the game board.
- Plays the game until either the player runs out of missiles or the buildings are all hit.
- Calls the subprograms `get_target` and `hit` to get the player input and handle the result.
Complete the `main program` so that:
- A random seed is chosen.
- The board is initialised to be and 8×8 grid of strings.
- The subprogram `play_game` is called.
Typical inputs and outputs from the program would be:
10 military installations sighted. You have 50 cruise missiles to destroy them!
01234567
0——–
1——–
2–u—–
3——u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 1
Enter the y target: 2
Miss. Only 49 missiles left.
01234567
0——–
1——–
2-xu—–
3——u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 3
Enter the y target: 2
Miss. Only 48 missiles left.
01234567
0——–
1——–
2-xux—-
3——u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 2
Enter the y target: 1
Miss. Only 47 missiles left.
01234567
0——–
1–x—–
2-xux—-
3——u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 2
Enter the y target: 3
Miss. Only 46 missiles left.
01234567
0——–
1–x—–
2-xux—-
3–x—u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 3
Enter the y target: 1
That’s a hit! You have now scored 1
01234567
0——–
1–xH—-
2-xux—-
3–x—u-
4–u—–
5—-u—
6——–
7——–
Enter the x target: 1
Enter the y target: 3
That’s a hit! You have now scored 2
01234567
0——–
1–xH—-
2-xux—-
3-Hx—u-
4–u—–
5—-u—
6——–
7——–
Knowledge Organiser
Use these resources as a reference to help you meet the success criteria.
Programming guide:
Evaluate
Run the program and play the game to check that your program has met the success criteria.
Check that you have:
- Used comments within the code to describe the purpose of subprograms, conditions and iterations.
- Used meaningful identifier names. That means the names of subprograms and variables indicate what they are for.
