Wrapping C++ in Swift via a C wrapper.

cppwrapper.cpp

#include "cppwrapper.h"
#include "buff.hpp"

extern "C" void buff_deinit( buff* _this )
{
	delete _this;
}

extern "C" buff* buff_init( int type, double amount, double max_amount, double start_angle, double relative_angle, double max_distance, double bleedthrough, bool permanent )
{
	return new buff(type,amount,max_amount,start_angle,relative_angle,max_distance,bleedthrough,permanent);
}

extern "C" int buff_get_type( buff* _this )
{
	return _this->get_type();
}

cppwrapper.h

#if __cplusplus
extern "C"
{
#endif /* __cplusplus */

typedef struct buff buff;

void buff_deinit( buff* _this );
buff* buff_init( int type, double amount, double max_amount, double start_angle, double relative_angle, double max_distance, double bleedthrough, bool permanent );
int buff_get_type( buff* _this );

#if __cplusplus
}
#endif /* __cplusplus */

cppwrapper.swift

public class buff
{
	let cppinstance : COpaquePointer

	deinit {
		buff_deinit(cppinstance)
	}

	public init(type : Int32,amount : Double,max_amount : Double,start_angle : Double,relative_angle : Double,max_distance : Double,bleedthrough : Double,permanent : Bool) {
		cppinstance = buff_init(type,amount,max_amount,start_angle,relative_angle,max_distance,bleedthrough,permanent)
	}

	public func get_type() -> Int32 {
		return buff_get_type(cppinstance)
	}
}