Feasibility of Integrating a C++ Library into Mod for Numerical Calculations

[minerva]

Hi everyone,

I am developing a realistic fusion reactor mod, based on MIT's SPARC reactor, using Monte Carlo Simulations to simulate the neutrons within the reactor to increase the realism of the mod and then use Green's function to simply model the heat transfer from the molten salt to the pipes, steam, turbines, magnets, etc. I was also planning on including radiation damage and methods to manufacture different materials with the ability to withstand high numbers of atom displacements. For those interested, pm me and I can nerd out more about the mod.

 

My plan was to write the numerical code in C++ (I have it written in Fortran already) and transfer it over to Java using JNI (probably with HawtJNI), but I wanted to ask the more experienced modders around here how they were able to integrate numerically intense mods (i.e things like ReactorCraft, Gregtech, AE2, EnderIO, etc). I am worried that if I try to create realistically scaled fusion reactors in Minecraft using Java for the numerical calculations that java could not handle it (Or rather my implementation of Java     ). I read that this forum is not a Java Class, but I was hoping to gain some insight as to how other modders here tackled numerically heavy problems in Java, or if they just wrapped C++ code into Java like I was planning to do. 

 

My programming background is in Fortran77/95, C++, and a little bit of Java (took 6.005 online at MIT's Opencourseware but I would say I am a beginner still )  Looking to forward to hear from you smart people!

 

Thanks everyone!

M

[Cadiboo]

Java is very fast, and the JNI has a lot of overhead. You also sacrifice Java's main benefit - being able to run on any system. I would try to find a port of the libraries to Java, or porting them yourself before you commit to using the JNI.