source: orxonox.OLD/trunk/src/world_entities/script_trigger.cc @ 8753

/*
   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 "class_list.h"
#include "script.h"

#include "state.h"



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

  returnCount = 1;
  actionFinished = false;
  doDebugDraw = false;
  invert = false;
  scriptCalled = false;
  scriptIsOk = false;
  triggerLasts = false;
  loadParams(root);

}

/**
 * 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)
{
  if(root != NULL)
  {
    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, "radius", this, ScriptTrigger, setRadius)
        .describe("the fileName of the script, that should be triggered by this script trigger")
        .defaultValues(0);
    LoadParam(root, "delay", this, ScriptTrigger, setDelay)
        .describe("the delay after which the funtion sould be triggered")
        .defaultValues(0);
    LoadParam(root, "worldentity", this, ScriptTrigger, setTarget)
        .describe("The name of the target as it is in the *.oxw file")
        .defaultValues("");
    LoadParam(root, "triggerparent", this, ScriptTrigger, setTriggerParent)
        .describe("The name of the parent as it is in the *.oxw file")
        .defaultValues("");
    LoadParam(root, "callonce", this, ScriptTrigger, setCallOnce)
        .describe("True if the script shoul only be called once")
        .defaultValues("");
    LoadParam(root, "invert", this, ScriptTrigger, setInvert)
        .describe("")
        .defaultValues("");
    LoadParam(root, "triggerlasts", this, ScriptTrigger, setTriggerLasts)
        .describe("")
        .defaultValues("");
    LoadParam(root, "debugdraw", this, ScriptTrigger, setDebugDraw)
        .describe("True if the script should only be called once")
        .defaultValues("");
  }

}


/**
 * Sets the target(a world entity) of the ScriptTrigger. If the distance between the target and this trigger is smaller than the radius, the script gets triggered.
 * @param target The worldentity that the script supervises.
 */
void ScriptTrigger::setTarget(const std::string& target)
{
  BaseObject* targetEntity = ClassList::getObject(target, CL_WORLD_ENTITY);

  if (targetEntity != NULL)
  {
    this->setTarget(dynamic_cast<WorldEntity*>(targetEntity));
  }
  else
  {
    PRINTF(2)("Target %s for %s::%s does not Exist\n", target.c_str(), this->getClassName(), this->getName());
  }
}

/**
 * Sets the parent of the trigger.
 * @param parent The parrent. 
 */
void ScriptTrigger::setTriggerParent(const std::string& parent)
{
  BaseObject* parentEntity = ClassList::getObject(parent, CL_WORLD_ENTITY);

  if (parentEntity != NULL)
  {
    this->setParent(dynamic_cast<WorldEntity*>(parentEntity));
    this->setParentMode(PNODE_MOVEMENT);
  }
  else
  {
    PRINTF(2)("Parent %s for %s::%s does not Exist\n", parent.c_str(), this->getClassName(), this->getName());
  }
}

void ScriptTrigger::tick(float timestep)
{
  if(actionFinished) return;

  if(triggerLasts && scriptCalled)
  {
    executeAction(timestep);
    return;
  }
  
  if( !invert && this->distance(target) < radius)
 {
  if(!callOnce)
   {
    executeAction(timestep);
    scriptCalled = true;
   }
  else if(callOnce && !scriptCalled)
  {
   executeAction(timestep);
   scriptCalled = true;
  }
  
 }
 else if( invert && this->distance(target) > radius)
 {
   if(!callOnce)
   {
     executeAction(timestep);
   }
   else if(callOnce && !scriptCalled)
   {
     executeAction(timestep);
     scriptCalled = true;
   }
   
 }
 //else
   //printf("SCRIPTTRIGGER: target out of range\n");

}


void ScriptTrigger::executeAction(float timestep)
{
     if(scriptIsOk)
     {
       //testScriptingFramework();
     if(!(script->selectFunction(this->functionName,returnCount)) )
       printf("Error ScriptTrigger: Selection of %s in %s failed.\n",functionName.c_str(), script->getFileName().c_str());
     
     script->pushParam( timestep, this->functionName);
     
     if( !(script->executeFunction()) )
       printf("Error ScriptTrigger: Execution of %s in %s failed.\n",functionName.c_str(), script->getFileName().c_str());
     
     actionFinished = script->getReturnedBool();
     }
     
     
}


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

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

    script = scriptManager->getScriptByFile(file);
    if(script != NULL)
    {
      scriptIsOk = true;
    }
  }
}

/*
 void ScriptTrigger::testScriptingFramework()
 {
   std::string file("lunartest2.lua");
   //get script
   Script* script = State::getScriptManager()->getScriptByFile(file);
   printf("-------------------------- top of the stack:%i\n",lua_gettop(script->getLuaState()));

      //execute a function
   printf("----------- main -----------\n");
   std::string main("main");
   if( script->selectFunction(main,3))
     printf("function %s selected\n",main.c_str());

   script->pushParam(3.14159,main);
   printf("-------------------------- top of the stack:%i\n",lua_gettop(script->getLuaState()));
   script->executeFunction();

   int ret = script->getReturnedInt();
   printf("main returned %i\n",ret);

   if(script->getReturnedBool())
     printf("main returned true\n");
   else
     printf("main returned false\n");

   float retf = script->getReturnedFloat();
   printf("main returned %f\n",retf);
   

   printf("-------------------------- top of the stack:%i\n",lua_gettop(script->getLuaState()));
      //execute a 2nd function
   printf("----------- test -----------\n");
   std::string test("test");
   if( script->selectFunction(test,0))
     printf("function %s selected\n",test.c_str());

   script->executeFunction();


      //if(argc>1) lua_dofile(script.getLuaState(), argv[1]);
   printf("-------------------------- top of the stack:%i\n",lua_gettop(script->getLuaState()));

}*/