using UnityEngine;
using System.Collections;
using System.IO;

public class HingeDoor : SavableStaticInstance
{
    public float m_fMotorForce = 10.0f;
    public float m_fTargetVelocity = 300.0f;
    public bool m_bUsable = true;
    public bool m_bStartOpen = false;

    JointMotor openMotor;
    JointMotor closeMotor;
    bool m_bOpen = false;

    public void Start()
    {
        openMotor = new JointMotor();
        openMotor.targetVelocity = -m_fTargetVelocity;
        openMotor.force = m_fMotorForce;
        openMotor.freeSpin = false;

        closeMotor = new JointMotor();
        closeMotor.targetVelocity = m_fTargetVelocity;
        closeMotor.force = m_fMotorForce;
        closeMotor.freeSpin = false;

        gameObject.hingeJoint.motor = m_bStartOpen ? openMotor : closeMotor;
        m_bOpen = m_bStartOpen;
    }

    public void Use()
    {
        if (m_bUsable)
        {
            Activate();
        }
    }

    void Activate()
    {
        if (m_bOpen)
        {
            gameObject.hingeJoint.motor = closeMotor;
            m_bOpen = false;
        }
        else
        {
            gameObject.hingeJoint.motor = openMotor;
            m_bOpen = true;
        }
    }

    override public void Serialize(FileStream file)
    {
        WriteBool(m_bOpen, file);
    }

    override public void Deserialize(FileStream file)
    {
        m_bOpen = ReadBool(file);
        gameObject.hingeJoint.motor = m_bOpen ? openMotor : closeMotor;
    }
}