This program a simple dice roll simulator for the original version of the game Risk. It saves you having to roll dice. It can simulate single attacks (i.e., 3v2, 3v1, 2v2, 2v1, 1v2, and 1v1) or entire battles (e.g., 15v17) by repeatedly simulating single attacks.
It is meant to present a simplified view. If replacing having to tediously roll dice for each attack, just hitting the space bar will present a simulation for all six single attack configurations.
This program will also report statistics about single attacks and entire battles, if desired. Statistics are generated by simulation 10k attacks/battles. Expected losses, winners, and the win rate are reported.
Battle simulators assume that:
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The number of dice used by both attacker and defender are decided prior to rolling. (This rule is described as the 'original' and 'British' and 'American' and 'updated' rule, in contrast with the 'Dutch' rule in which the defender chooses to roll each die separately.)
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Both attacker and defender use the maximum number of dice they possibly can (which is advantageous given the prior assumption).
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Battles are not terminated early.
The accuracy of simulations has been compared with the following publication to ensure accuracy.
Osborne, Jason A. "Markov chains for the RISK board game revisited."
Mathematics magazine 76.2 (2003): 129-135.
https://doi.org/10.1080/0025570X.2003.11953165
However, the implementation should not be relied on without scrutiny.
All materials herein which may be copywrited, where applicable, are. Copyright 2019 Hal Clark. See [LICENSE.txt] for details about the license.
All liability is herefore disclaimed. The person(s) who use this source and/or software do so strictly under their own volition. They assume all associated liability for use and misuse, including but not limited to damages, harm, injury, and death which may result, including but not limited to that arising from unforeseen or unanticipated implementation defects.
SFML, CMake, and a C++ compiler.
This project uses CMake. Use the usual commands to compile:
$> cd /path/to/source/directory
$> mkdir build && cd build/
$> cmake -DCMAKE_INSTALL_PREFIX=/usr ../
then either
$> make
or
$> make && sudo make install
The script compile.sh will perform the above, but will not install anything.