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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file squirrel_class.hpp Defines templates for converting C++ classes to Squirrel classes */
#ifndef SQUIRREL_CLASS_HPP
#define SQUIRREL_CLASS_HPP
#include "squirrel_helper.hpp"
/**
* The template to define classes in Squirrel. It takes care of the creation
* and calling of such classes, to minimize the API layer.
*/
template <class CL, ScriptType ST>
class DefSQClass {
private:
const char *classname;
public:
DefSQClass(const char *_classname) :
classname(_classname)
{}
/**
* This defines a method inside a class for Squirrel.
*/
template <typename Func>
void DefSQMethod(Squirrel *engine, Func function_proc, const char *function_name)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQNonStaticCallback<CL, Func, ST>, 0, nullptr, &function_proc, sizeof(function_proc));
}
/**
* This defines a method inside a class for Squirrel, which has access to the 'engine' (experts only!).
*/
template <typename Func>
void DefSQAdvancedMethod(Squirrel *engine, Func function_proc, const char *function_name)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQAdvancedNonStaticCallback<CL, Func, ST>, 0, nullptr, &function_proc, sizeof(function_proc));
}
/**
* This defines a method inside a class for Squirrel with defined params.
* @note If you define nparam, make sure that the first param is always 'x',
* which is the 'this' inside the function. This is hidden from the rest
* of the code, but without it calling your function will fail!
*/
template <typename Func>
void DefSQMethod(Squirrel *engine, Func function_proc, const char *function_name, int nparam, const char *params)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQNonStaticCallback<CL, Func, ST>, nparam, params, &function_proc, sizeof(function_proc));
}
/**
* This defines a static method inside a class for Squirrel.
*/
template <typename Func>
void DefSQStaticMethod(Squirrel *engine, Func function_proc, const char *function_name)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQStaticCallback<CL, Func>, 0, nullptr, &function_proc, sizeof(function_proc));
}
/**
* This defines a static method inside a class for Squirrel, which has access to the 'engine' (experts only!).
*/
template <typename Func>
void DefSQAdvancedStaticMethod(Squirrel *engine, Func function_proc, const char *function_name)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQAdvancedStaticCallback<CL, Func>, 0, nullptr, &function_proc, sizeof(function_proc));
}
/**
* This defines a static method inside a class for Squirrel with defined params.
* @note If you define nparam, make sure that the first param is always 'x',
* which is the 'this' inside the function. This is hidden from the rest
* of the code, but without it calling your function will fail!
*/
template <typename Func>
void DefSQStaticMethod(Squirrel *engine, Func function_proc, const char *function_name, int nparam, const char *params)
{
using namespace SQConvert;
engine->AddMethod(function_name, DefSQStaticCallback<CL, Func>, nparam, params, &function_proc, sizeof(function_proc));
}
template <typename Var>
void DefSQConst(Squirrel *engine, Var value, const char *var_name)
{
engine->AddConst(var_name, value);
}
void PreRegister(Squirrel *engine)
{
engine->AddClassBegin(this->classname);
}
void PreRegister(Squirrel *engine, const char *parent_class)
{
engine->AddClassBegin(this->classname, parent_class);
}
template <typename Func, int Tnparam>
void AddConstructor(Squirrel *engine, const char *params)
{
using namespace SQConvert;
engine->AddMethod("constructor", DefSQConstructorCallback<CL, Func, Tnparam>, Tnparam, params);
}
void AddSQAdvancedConstructor(Squirrel *engine)
{
using namespace SQConvert;
engine->AddMethod("constructor", DefSQAdvancedConstructorCallback<CL>, 0, nullptr);
}
void PostRegister(Squirrel *engine)
{
engine->AddClassEnd();
}
};
#endif /* SQUIRREL_CLASS_HPP */
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