# SimFire Fire Simulator
<p align="center">
<img src="https://raw.githubusercontent.com/mitrefireline/simfire/main/assets/icons/rl_logo_horizontal.png">
</p>
## Introduction
SimFire uses [PyGame](https://www.pygame.org/wiki/about) to display and simulate different fire spread models, including the Rothermel Surface fire spread model described in [this](https://www.fs.usda.gov/rm/pubs_series/rmrs/gtr/rmrs_gtr371.pdf) paper.
For more comprehensive documentation, go to our [docs page](https://mitrefireline.github.io/simfire).
## Running the Simulation
<figure>
<p align="center">
<img src="https://raw.githubusercontent.com/mitrefireline/simfire/main/assets/gifs/simulation_33.06N_116.58W.gif" width="225" />
<img src="https://raw.githubusercontent.com/mitrefireline/simfire/main/assets/gifs/simulation_39.67N_119.80W.gif" width="225" />
<br><b>Left: Fire simulated near Julian, CA. Right: Fire simulated near Reno, NV.
<br>Both fires have winds from the east at 20mph<b>
</p>
</figure>
Install `simfire` by following the [installation instructions](#installing-the-package). Then run the `run_game.py` script:
```shell
python run_game.py
```
### Running as a Python Module
```python
from simfire.sim.simulation import FireSimulation
from simfire.utils.config import Config
config = Config("configs/operational_config.yml")
sim = FireSimulation(config)
# Run a 1 hour simulation
sim.run("1h")
# Run the same simulation for 30 more minutes
sim.run("30m")
# Render the next 2 hours of simulation
sim.rendering = True
sim.run("2h")
# Now save a GIF and fire spread graph from the last 2 hours of simulation
sim.save_gif()
sim.save_spread_graph()
# Saved to the location specified in the config: simulation.sf_home
# Update agents for display
# (x, y, agent_id)
agent_0 = (5, 5, 0)
agent_1 = (5, 5, 1)
agents = [agent_0, agent_1]
# Create the agents on the display
sim.update_agent_positions(agents)
# Loop through to move agents
for i in range(5):
agent_0 = (5 + i, 5 + i, 0)
agent_1 = (5 + i, 5 + i, 1)
# Update the agent positions on the simulation
sim.update_agent_positions([agent_0, agent_1])
# Run for 1 update step
sim.run(1)
# Turn off rendering so the display disappears and the simulation continues to run in the
# background
sim.rendering = False
```
## Installing the Package
```shell
pip install simfire
```
## Contributing
For contributing, see the [Contribution Page](https://mitrefireline.github.io/simfire/contributing.html) in our [docs](https://mitrefireline.github.io/simfire).
## Citation
To cite this software, use the “Cite this repository” link built into GitHub on the right.
### Copyright
Copyright ©2023 The MITRE Corporation. ALL RIGHTS RESERVED. Approved for Public Release; Distribution Unlimited. Public Release Case Number 22-3261.
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