extern crate libloading;

use libloading::{Library, Symbol};

use std::ops::Deref;

struct EngineInstance {}

struct Engine<'a> {

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

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

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

}

fn main() {

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

    unsafe {

        let engine = Engine {

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

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

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

        };

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

    }

}