1 extern crate libloading;

     2 

     3 use libloading::{Library, Symbol};

     4 use std::ops::Deref;

     5 

     6 struct EngineInstance {}

     7 

     8 struct Engine<'a> {

     9     protocol_version: Symbol<'a, unsafe fn() -> u32>,

    10     start_engine: Symbol<'a, unsafe fn() -> *mut EngineInstance>,

    11     cleanup: Symbol<'a, unsafe fn(engine_state: *mut EngineInstance)>,

    12 }

    13 

    14 fn main() {

    15     let hwlib = Library::new("libhedgewars_engine.so").unwrap();

    16 

    17     unsafe {

    18         let engine = Engine {

    19             protocol_version: hwlib.get(b"protocol_version").unwrap(),

    20             start_engine: hwlib.get(b"start_engine").unwrap(),

    21             cleanup: hwlib.get(b"cleanup").unwrap(),

    22         };

    23 

    24         println!("Hedgewars engine, protocol version {}", engine.protocol_version.deref()());

    25     }

    26 }