https://github.com/makomweb/mars-rover
JAVA implementation of the mars-rover code kata
https://github.com/makomweb/mars-rover
java
Last synced: 11 months ago
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JAVA implementation of the mars-rover code kata
- Host: GitHub
- URL: https://github.com/makomweb/mars-rover
- Owner: makomweb
- Created: 2018-09-14T15:18:45.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2021-03-03T11:45:42.000Z (over 5 years ago)
- Last Synced: 2025-05-30T19:17:20.174Z (about 1 year ago)
- Topics: java
- Language: Java
- Homepage:
- Size: 121 KB
- Stars: 6
- Watchers: 0
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Mars Rover Code Kata
[](https://mkomischke.visualstudio.com/mars-rover-ci/_build/latest?definitionId=6)
[http://kata-log.rocks/mars-rover-kata](http://kata-log.rocks/mars-rover-kata)
## The Problem
A squad of robotic rovers are to be landed by NASA on a plateau on Mars.
This plateau, which is curiously rectangular, must be navigated by the rovers
so that their on-board cameras can get a complete view of the surrounding
terrain to send back to Earth.
A rover's position and location is represented by a combination of x and y
co-ordinates and a letter representing one of the four cardinal compass points.
The plateau is divided up into a grid to simplify navigation. An example position
might be 0, 0, N, which means the rover is in the bottom left corner and facing North.
In order to control a rover, NASA sends a simple string of letters. The possible
letters are 'L', 'R' and 'M'. 'L' and 'R' makes the rover spin 90 degrees left
or right respectively, without moving from its current spot. 'M' means move
forward one grid point, and maintain the same heading.
Assume that the square directly North from (x, y) is (x, y+1).
The first line of input is the upper-right coordinates of the plateau, the
lower-left coordinates are assumed to be 0,0. The rest of the input is information
pertaining to the rovers that have been deployed. Each rover has two lines of
input. The first line gives the rover's position, and the second line is a series
of instructions telling the rover how to explore the plateau.
The position is made up of two integers and a letter separated by spaces,
corresponding to the x and y coordinates and the rover's orientation.
Each rover will be finished sequentially, which means that the second rover
won't start to move until the first one has finished moving.
The output for each rover should be its final coordinates and heading.
**Input:**
5 5
1 2 N
LMLMLMLMM
3 3 E
MMRMMRMRRM
**Output:**
1 3 N
5 1 E
## The Solution
This has been created using gradle; to run the tests, just execute:
```
./gradlew test
```
or (on windows machines):
```
gradlew.bat test
```
## Use the commandline app
Package the app using:
```
gradlew.bat build
```
And then execute the app from the subfolder `build\libs`:
```
java -jar mars-rover.jar
```