Froggy

This repository contains the example code to "Fly Me To The Moon".

Build and test

Install Conan according to the instructions at docs.conan.io. From the repository root run following commands to build and test.

# make build directory
mkdir build
cd build
# configure build system
cmake .. -DCMAKE_BUILD_TYPE=Debug|Release|... [ -DUSE_GTK=ON ]
# build
cmake --build .
# test
cmake --build . --target test

Usage

Take a look at test/unit_test.cpp for an example.

Example

A moon shot could look like this. The Earth is blue, the Rocket is orange and the Moon is gray. The lines show the body's trajectories.

Some flight stats are printed to std::out.

[2020-04-29 15:53:22.243] [info] Starting simulation ...
[2020-04-29 15:53:29.437] [info] Rendering orbits ...
[2020-04-29 15:53:29.437] [info] Please find the diagram at /home/.../froggy/build/moon_shot.png
[2020-04-29 15:53:29.706] [info] Flight stats:
Iterations               : 64026513 (8580342.133/s)
Simulation duration      : 7.462s
Flight duration          : 640265.13s (7.41d)
Lowest velocity          : 336.75m/s (1212.29km/h)
Hightest velocity        : 11114.93m/s (40013.76km/h)
Lowest acceleration      : 0.00m/s^2 (0.00g)
Hightest acceleration    : 33.20m/s^2 (3.38g)
Rocket trajectory length : 798481.650km
Earth trajectory length  : 7970.830km
Moon trajectory length   : 647870.251km

This picture shows take off and landing of the Rocket.

This picture shows the Moon at its closest to the Rocket's trajectory.