package com.gota.demo.lj;

import org.keplerproject.luajava.LuaException;
import org.keplerproject.luajava.LuaObject;
import org.keplerproject.luajava.LuaState;
import org.keplerproject.luajava.LuaStateFactory;

public class LuaScriptLoader extends ScriptLoader {
	public static final String SCRIPT_FOLDER = System.getProperty("user.dir") + "\\scripts\\";
	
	public LuaState luaState;
	
	public LuaScriptLoader(final String fileName, long reloadTime) {
		super(SCRIPT_FOLDER + fileName, reloadTime);
	}

	@Override
	protected void onCreate() {
		luaState = LuaStateFactory.newLuaState();
		luaState.openLibs();
	}

	@Override
	protected void onLoadScript() {
		luaState.LdoFile(fileName);
	}

	@Override
	protected void onCloseScript() {
		luaState.close();
	}

	/**
	 * 调用无返回值的脚本函数
	 * @param functionName 脚本函数名
	 * @param params 脚本函数参数
	 */
	public void call(String functionName, Object... params) {
		LuaObject fun = this.luaState.getLuaObject(functionName);
		try {
			fun.call(params, 0);
		} catch (LuaException e) {
			System.out.println("error: " + functionName);
			e.printStackTrace();
		}
	}

	/**
	 * 调用有返回值的脚本函数
	 * @param functionName 脚本函数名
	 * @param retNum 脚本函数返回值个数
	 * @param params 脚本函数参数
	 * @return 脚本函数返回值
	 */
	public Object[] call(String functionName, int retNum, Object... params) {
		LuaObject fun = this.luaState.getLuaObject(functionName);
		try {
			return fun.call(params, retNum);
		} catch (LuaException e) {
			e.printStackTrace();
		}
		return null;
	}
}