/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program 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; either version 2, or (at your option)
   any later version.

### File Specific:
   main-programmer: Silvan Nellen
   co-programmer: ...
*/


#include "script_trigger.h"
#include "script.h"

#include "state.h"
#include "debug.h"
ObjectListDefinition(ScriptTrigger);


/**
 * Constructs a new ScriptTrigger.
 * @param root the xml element to load the parameters from.
 *
 */
ScriptTrigger::ScriptTrigger(const TiXmlElement* root)
{
  this->registerObject(this, ScriptTrigger::_objectList);
  this->toList(OM_COMMON);

  returnCount = 1;
  scriptFinished = false;
  doDebugDraw = false;

  scriptCalled = false;
  scriptIsOk = false;
  executionStopped = false; // true when something goes wrong and the trigger has to be stopped
  addToScript = false;

}

/**
 * Deletes the ScriptTrigger.
 *
 */
ScriptTrigger::~ScriptTrigger()
{

}

/**
 * Reads the values from the tml element and sets them.
 * @param root the xml element to load the parameters from.
 *
 */
void ScriptTrigger::loadParams(const TiXmlElement* root)
{

  WorldEntity ::loadParams(root);

  LoadParam(root, "file", this, ScriptTrigger, setScript)
      .describe("the fileName of the script, that should be triggered by this script trigger")
      .defaultValues("");
  LoadParam(root, "function", this, ScriptTrigger, setFunction)
      .describe("the function of the script, that should be triggered by this script trigger")
      .defaultValues("");
  LoadParam(root, "abs-coor", this, ScriptTrigger, setAbsCoor)
      .describe("where this script trigger should be located")
      .defaultValues("");
  LoadParam(root, "triggerparent", this, ScriptTrigger, setTriggerParent)
      .describe("The name of the parent as it is in the *.oxw file")
      .defaultValues("");
  LoadParam(root, "debugdraw", this, ScriptTrigger, setDebugDraw)
      .describe("")
      .defaultValues(false);
  LoadParam(root, "addtoscript", this, ScriptTrigger, setAddToScript)
      .describe("True if this scripttrigger should be aviable in the script")
      .defaultValues(false);
}


/**
 * Sets the parent of the trigger.
 * @param parent The parent.
 */
void ScriptTrigger::setTriggerParent(const std::string& parent)
{
  WorldEntity* parentEntity = WorldEntity::objectList().getObject(parent);

  if (parentEntity != NULL)
  {
    this->setParent(parentEntity);
    this->setParentMode(PNODE_MOVEMENT);
  }
  else
  {
    PRINTF(2)("ERROR SCRTIPTTRIGGER : Parent %s for %s::%s does not Exist\n", parent.c_str(), this->getClassCName(), this->getCName());
  }
}


void ScriptTrigger::executeScriptFunction(float timestep)
{
  if(executionStopped && scriptIsOk) // If the script has been loaded correctly but something is wrong with the settings of the trigger
  {
   PRINT(1)("ERROR SCRTIPTTRIGGER: Something went wrong while executing %s in %s . Execution stopped! \n", functionName.c_str(), script->getFileName().c_str());
   return;
  }

  if(scriptIsOk)
  {
    if(!(script->selectFunction(this->functionName,returnCount)) )
     {
      PRINT(1)("ERROR SCRTIPTTRIGGER : Selection of %s in %s failed.\n",functionName.c_str(), script->getFileName().c_str());
      executionStopped = true; //Since the triggersettings won't change on runtime, it makes no sense to call the function again.
      return;
     }

    if (! (script->pushParam( timestep, this->functionName)) )
     {
      executionStopped = true; //Since the triggersettings won't change on runtime, it makes no sense to call the function again.
      return;
     }
    if( !(script->executeFunction()) )
     {
      PRINT(1)("ERROR SCRTIPTTRIGGER : Execution of %s in %s failed.\n",functionName.c_str(), script->getFileName().c_str());
      executionStopped = true; //Since the triggersettings won't change on runtime, it makes no sense to call the function again.
      return;
     }
    scriptFinished = script->getReturnedBool();
  }
  else
  printf("ERROR SCRTIPTTRIGGER : Script could not be executed !\n");


}


void ScriptTrigger::setScript(const std::string& filename)
{

  std::string file = filename;

  unsigned int seperation =  filename.find_last_of('/');
  if (seperation != std::string::npos)
  {
    file = filename.substr( seperation+1 );
  }

  ScriptManager* scriptManager = State::getScriptManager();
  if (scriptManager != NULL)
  {

    script = scriptManager->getScriptByFile(file);
    if(script != NULL)
    {
      scriptIsOk = true;
    }
    else
    printf("ERROR SCRTIPTTRIGGER : Could not find the wrapperobject of %s , the script won't be executed ! \n", file.c_str());
  }
}