zombie

This is a more optimised version (created by Kin Fai Franco Chan and Zakaria Achouri) of the original MATLAB zombie apocalypse group project (https://github.com/UoMLegends/Zombie). This version uses vectorisation for movement increment, uses knnsearch for finding nearest enemy and preallocation for memory efficiency.

To run the simulation, do the following steps:

1. save all the m files from this repository
2. execute zombieBasic.m using MATLAB
3. enjoy watching the zombie apocalypse simulation
4. execute population.m to plot the graphs of zombie population and human population versus time

To simplify things, we modelled our zombie apocalypse based on a few simple behaviours of both zombies and humans.

Basic behaviours of zombies and humans:

• If human and zombie are far away from each other, they simply move randomly (Brownian motion).
• If human and zombie are relatively close to each other, then the zombie would chase after the human, and the human would run away.
• If a zombie is close to multiple humans, then the zombie would chase after the closest human.
• If human and zombie are very close to each other, then they will fight. Sometimes the human wins the fight, which results in killing the zombie. And sometimes the zombie wins the fight, which results in turning the human into a zombie.

Feel free to modify the parameters on zombieBasic.m:

Parameters	Descriptions
z0	the initial zombie population
h0	the initial human population
zSpeed	zombie movement top speed
hSpeed	human movement top speed
zSightRadius	maximum distance a zombie can sense the presence of a human (for chase)
hSightRadius	maximum distance a human can sense the presence of a zombie (for chase)
zAttackRadius	maximum distance a zombie can attack from (for fight)
hAttackRadius	maximum distance a human can attack from (for fight)
lim	the length and the width of the arena (square arena)
pz	the probability of zombie successfully converting a human to a zombie
ph	the probability of human successfully killing a zombie