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# grav2ty :rocket:
![screenshot of grav2ty showing a spaceship, a planet, an asteroid orbiting and two projectiles](./doc/grav2ty-2019-05-24.png)
the most realistic asteroids-like game in existence.
## controls
* `up`/`down`: increase/decrease thruster power (ship acceleration)
* `left`/`right`: rotate ship (counter)-clockwise
* `c`: toggle centered view
* `+`/`-`: zoom in/out
* `space`: fire a projectile
## roadmap
- [x] simulation of gravity
- [x] controllable spaceship
- [x] collision detection
- [ ] make measurements more realistic
- [x] allow for zooming the viewport
- [x] ~~time scaling / fast forward~~
- [ ] performance improvements
- [ ] simplify RelGraph (ordered tuples as keys)
- [ ] don't calculate gravity to every little object
- [ ] don't do collision detection at a safe distance
- [x] multi player support
- [ ] Spawn ships for players
- [ ] Implement client
- [ ] Simulate in client
- [x] switch rendering engine
- [ ] only redraw if necessary
- [ ] trajectory smoothing?
- [ ] cosmetics (improved models, stars, …)
- [ ] Introduce a good HUD
- [ ] main menu, pause menu
- [ ] Free viewport (mouse moved)
- [ ] gameplay
- [ ] limit acceleration, fuel?
- [x] projectiles
- [ ] Limit firerate
- [x] make projectiles self-destruct
- [ ] reduce redundancy in projectile (cannon + object)
- [ ] mapping support
- [ ] orbit visualization / prediction
## history
* screenshot of [grav2ty at its first commit](./doc/grav2ty-first-commit.png)
* the previous attempt [grav1ty](https://github.com/sternenseemann/grav2ty/tree/grav1ty)
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