using UnityEngine;
using System.Collections;
using UnityEditor;

[System.Serializable]
public struct tHealthMAnager
{
    public ActorBase tParent;

    public float fMaxHealth;
    public float fCurrentHealth;
    public bool bIsDead;

    public void InflictDamagePercentage( float fPercentage )
    {
        InflictDamage (fMaxHealth / 100 * fPercentage);
    }

    public void InflictDamage( float fDamage )
    {
        fCurrentHealth -= fDamage;
        if (CheckDeath ())
            OnDeath ();
        ClampHealth ();

        OnHit();
    }

    public void OnDeath()
    {
        tParent.OnDeath ();
    }

    public void HealDamage( float fHealAmount, bool bCanRevive = false )
    {
        fCurrentHealth += fHealAmount;
        if (bCanRevive && fCurrentHealth > 0)
        {
            bIsDead = false;
        }
        ClampHealth ();
    }

    public void OnHit()
    {
        tParent.OnHit ();
    }

    bool CheckDeath()
    {
        bool bIsDeadBeforeChange = bIsDead;
        bIsDead = ( fCurrentHealth <= 0 );
        if ((bIsDeadBeforeChange == false) && (bIsDead == true))
            return true;
        else
            return false;
    }

    void ClampHealth()
    {
        fCurrentHealth = Mathf.Clamp (fCurrentHealth, 0, fMaxHealth);
    }
}

[CustomEditor(typeof(ActorBase))]
public class ActorBase : Editor
{
    public tHealthMAnager HealthManager;

    public override void OnInspectorGUI()
    {
        DrawDefaultInspector();

        ActorBase myScript = (ActorBase)target;
        if(GUILayout.Button("Kill this"))
        {
            myScript.HealthManager.InflictDamagePercentage(150);
        }
    }

    virtual public void Start()
    {
        HealthManager.tParent = this;
    }

    virtual public void Update ()
    {

    }

    public virtual void OnDeath()
    {
        Debug.Log("A base actor has died.");
    }

    public virtual void OnHit()
    {
        Debug.Log("A base actor has been hit.");
    }
}