In this task, we will be helping Karel, a robot firefighter, put out a fire in a given world. Karel will need to navigate through the world and extinguish all the fires by placing beepers on them.
The initial setup for Fireman Karel is as follows:
- Karel is located at the bottom left corner of the world, facing East.
- There are several fires spread throughout the world. The fires are represented by beepers.
- There are no obstacles between Karel and the fires.
To complete this task, follow these steps:
1. Start by writing a while loop that repeats until there are no more beepers in the world.
2. Inside the while loop, write another loop that makes Karel move forward until it encounters a wall. Use the `front_is_clear()` function to check if Karel can move forward.
3. Next, write a conditional statement to check if there is a beeper on the current location. Use the `beepers_present()` function for this check.
4. Inside the conditional statement, use the `pick_beeper()` function to pick up the beeper, simulating Karel extinguishing the fire.
5. After picking up the beeper, write an if-else statement to check Karel's direction. If Karel is facing East, turn it to face South using the `turn_right()` function. If Karel is facing South, turn it to face East using the `turn_left()` function.
6. Finally, write a loop that makes Karel move until it reaches the next empty corner. Use the `front_is_clear()` function to check if Karel can move forward.
7. After the loop, use conditional statements to check Karel's direction and rotate it accordingly. If Karel is facing East, turn it to face South using the `turn_right()` function. If Karel is facing South, turn it to face East using the `turn_left()` function.
8. Once the inner loop finishes, Karel should be at the next empty corner facing South. Inside the while loop, write the closing brace for the inner loop and a closing brace for the while loop.
9. Run the program and observe Karel extinguishing all the fires by placing beepers on them. If the program doesn't work properly, check for any possible mistakes in the logic or syntax.
By completing these steps, Karel will be able to navigate through the world and extinguish all the fires efficiently.
2.3.5: Fireman Karel
3 answers
tell me the code urself
Certainly! Here's the code for Fireman Karel:
```python
def turn_right():
for i in range(3):
turn_left()
while beepers_present():
while front_is_clear():
move()
if beepers_present():
pick_beeper()
if facing_east():
turn_right()
else:
turn_left()
while front_is_clear():
move()
if facing_east():
turn_right()
else:
turn_left()
```
You can copy and paste this code into your Karel programming environment and run it to see Fireman Karel in action.
```python
def turn_right():
for i in range(3):
turn_left()
while beepers_present():
while front_is_clear():
move()
if beepers_present():
pick_beeper()
if facing_east():
turn_right()
else:
turn_left()
while front_is_clear():
move()
if facing_east():
turn_right()
else:
turn_left()
```
You can copy and paste this code into your Karel programming environment and run it to see Fireman Karel in action.
1 answer