game_theory_Euler

This is the code repository for the paper Lin, Y.-H., & Weitz, J. S. (2019). Spatial Interactions and Oscillatory Tragedies of the Commons. Physical Review Letters, 122(14), 148102.

main_code

C code for running spatial/non-spatial simulations.

• To compile, gcc game_theory.c -lm -O3 -o game_theory.out
  then ./game_theory.out 1 to execute the simulation.
  The first argument is the seed for random number generator and is required.

• To change simulation parameters, edit input.dat. The order of parameters are specified on the second line.

• create_fd.py helps create a batch of folders for different A0's systematically.

• To switch spatial/non-spatial, edit line 8 in header.h.
  #define spatial 1 for spatial simulations, #define spatial 0 for non-spatial simulations.
  After save the changes in header.h, recompile and run simulations.

• fxs_pbc.c constains most sub-routines specific to environment-depedent games, including randomly drawing players in a game, calculate environment-dependent payoffs, calculate change in environment using the Euler method, 2D diffusion, etc. "pbc" stands for [p]eriodic [b]oundary [c]onditions.

• innout.c, rand.c, initialization.c, alloc.c are general helper functions handling random number generator, file I/O, and array allocation.

• The folder outfile is for storage of simulation data. Make sure to have such a folder before running simulations, otherwise segmentation fault will occur.

data_collection

MATLAB scripts to collect simulation data and store as .mat file in batch for future analysis and visualization.

gr_calculation

MATLAB scripts to calculate pair correlation of spatial profiles.

script_for_figs

MATLAB scripts for plotting figures in the paper. Part of the data sets required for plotting figures exceed the file size limit of GitHub and are not included in this repository. Please make a request to [email protected] for large data files.

DOI

This code is archived at Zenodo