How To Open a Door Script

Hello
I was wondering if someone could help me out. I have this door I made and would like for it to open when the train hits a trigger. I am using 3ds max. How would I script this? Do I create an animation? Thanks.

[Metazoanhaddock]

theres a sample door script included in the simulator

Awesome thanks!

Hey Jaynen i figured this out for you using the sample script included in NL!

Short video

Wow! how do that! Which's one you made these door with lights? Blender or 3dsobject?


Lyle

Can you teach us beginners how to do just that with scripting

@Lyle & Jaynen ..

I made the doors in 3D max, consisting of two objects. the left door and the right door. In 3D max you can Name the objects individually, so i named them "DoorLeft" & "DoorRight" and exported them as a 3d object (.3ds) and put it in my park folder.

I then copied the door script from the NL2 objects folder, and put it in my park folder, opened it up and renamed
This line, with my new objects names.

Code: Select all

leftDoor = sco.getElementForName("DoorLeft"); rightDoor = sco.getElementForName("DoorRight");

Then in the NL2 editor, in the Scenery section, I opened up the NL2SCO editor and added all the settings necessary. Then in the scripting tab attached the new script.

Added the NL scene file to the park, and it worked

As for lights, go to the lights tab and you can attach lights relative to the individual objects.

Casper,

Thanks, Does 3Ds max have freeware or payware? I didn't remember we talked last time by Jaynen.


Lyle

Hey thanks for the post. I got some time and right now I am trying to figure this out. Hopefully I will have something to post soon.

Tell me above about freeware or payware?

Lyle

Okay so I got this script to work and I must say its awesome. It detects where the train is so it wont hit it. You can adjust the angle and speed and trigger distance very easily as well. Also I know I have to work on the lighting.

Awesome! I telling you one thing. when train arrive near by Door and Train stop by 50 sec. or less then will doors open and trains to way.. What you think?

Lyle

Yup! That looks awesome Jaynen,

@lyle, no freeware. You could somehow obtain it.. or download numerous Free 3D programs like blender or sketchup

Thanks for the help I appreciate it.

Any updated yet?

Lyle

@Casper
I tried doing what you said, but when the doors open, they open around the centre of the object.
So as if in your video they opened around the centre of the door, and not the edges.
Could you upload a video/screenshots of the 3ds object you made.
(I am using sketchup if that could be the problem)

Heey all,

Im currently also trying to make a custom door and i would love to script it. I tried the giving method but I can't get it to work. I'm using sketchup and tried making two different objects (leftdoor and rightdoor) and combine them in one object and save as .dae but when I use it with the script it says "element not found: Left" (and Right probably too but it first encountered Left). This also happened when I tried to make the doors two different components in the sketchup model. Does anyone know a way to make the doors in sketchup so they can be used for the script? Would love to hear your answers

Thanks from Emperors Productions

[herman116]

If i'm right, you named the door "leftdoor"and "rightdoor". The names should be just "left" and "right". It's actually just what the error says, it can't find "left" because there isn't an object called just"left".

Yes thank you I found it. I tried it once with the name "Left" but now I see it's with a lowercase "l" instead. :p

Is there also a sliding door script? Or any way to make an object slide any direction on a trigger :P

[herman116]

There is no standard sliding door script but if you know a bit of scripting, it's not that hard to change the script so that the doors will slide.

This is the original door script with 6 lines of code changed so that the doors will slide.

Code: Select all

import com.nolimitscoaster.*;
import nlvm.math3d.*;

public class DoorScript extends Script implements TrackTriggerListener
{
  private SceneObject sco;
  private SceneObjectElement leftDoor;
  private SceneObjectElement rightDoor;
 
  private static final int STATE_IDLE = 0;
  private static final int STATE_OPENING = 1;
  private static final int STATE_OPENING_REVERSED = 2;
  private static final int STATE_CLOSING = 3;
 
  // rotate up to 90 degrees
  private static final float MAX_ANGLE = (float)(Math.PI / 2.0);
  private static final float SPEED = 1.6f;
 
  // rotate around Y-Axis
  private static final Vector3f AXIS = new Vector3f(0,1,0);
 
  private int state;
  private float rot;
 
  private TrackTrigger beforeDoorTrigger;
  private TrackTrigger behindDoorTrigger;
 
  private StaticSound doorSound;
 
  private static final String scriptName = "DoorScript";
 
  // must be constant string expression and marked as final so that the compiler will no complain with a warning when used for
  // StaticSound.loadFromFile
  private final static String doorSoundFile = "doorsound.ogg";
 
  public bool onInit()
  {
    sco = sim.getSceneObjectForEntityId(getParentEntityId());
    if (sco == null)
    {
      System.err.println(scriptName + ": the script is not part of a scene object");
      return false;
    }
   
    leftDoor = sco.getElementForName("left");
    if (leftDoor == null)
    {
      System.err.println(scriptName + ": element not found: left");
      return false;
    }   

    rightDoor = sco.getElementForName("right");
    if (rightDoor == null)
    {
      System.err.println(scriptName + ": element not found: right");
      return false;
    } 

    doorSound = StaticSound.loadFromFile(doorSoundFile, 0);
    if (doorSound == null)
    {
      System.err.println(scriptName + ": could not load sound '" + doorSoundFile + "'");
      return false;
    }

    Vector3f pos = new Vector3f();

    sco.getTranslation(pos);


    doorSound.setPosition(pos);

    // Setting to 'Local' will enable environmental (reverb) effects if this sound's position should be e.g. in a tunnel
    doorSound.setEnvironmentMode(StaticSound.E_ENVMODE_LOCAL);

    // These parameters affect the distance attenuation
    doorSound.setDistanceParameters(2.0f, 0.8f);

    final float range = 10;

    // create triggers...
    TrackPos trackPos = sim.findNearestCoasterTrack(pos, range);
    if (trackPos == null)
    {
      System.err.println(scriptName + ": no coaster found within a range of "+ range + " meters");
      return false;
    }
    else
    {
      Coaster coaster = trackPos.getCoaster();
     
      System.out.println(scriptName + ": Coaster found: " + coaster);

      System.out.println("Coaster Style is: " + coaster.getCoasterStyleId());
     
      // create a trigger 5 meters in front of the track pos
      beforeDoorTrigger = TrackTrigger.createTrackTriggerAtOffset(trackPos, -5.0);
     
      // create a trigger 5 meters after the track pos
      behindDoorTrigger = TrackTrigger.createTrackTriggerAtOffset(trackPos, +5.0);
     
      // tell the triggers that they should call our onTrainEntering/onTrainLeaving methods
      // We have to implement the TrackTriggerListener interface
      beforeDoorTrigger.addTrackTriggerListener(this);
      behindDoorTrigger.addTrackTriggerListener(this);
    }
   
    state = STATE_IDLE;
    rot = 0;
   
    return true;
  }
 
  public void onNextFrame(float fTickTime)
  {
    switch (state)
    {
    case STATE_IDLE:
      // do nothing
      break;
    case STATE_OPENING:
      {
        rot += fTickTime * SPEED;
        if (rot >= MAX_ANGLE)
        {
          rot = MAX_ANGLE;
          state = STATE_IDLE;
        }
        //leftDoor.setRotation(rot, AXIS);
      leftDoor.setTranslation(new Vector3f(-rot, 0, 0));
        //rightDoor.setRotation(-rot, AXIS);
      rightDoor.setTranslation(new Vector3f(rot, 0, 0));
      }
      break;
    case STATE_OPENING_REVERSED:
      {
        rot -= fTickTime * SPEED;
        if (rot <= -MAX_ANGLE)
        {
          rot = -MAX_ANGLE;
          state = STATE_IDLE;
        }
        //leftDoor.setRotation(rot, AXIS);
      leftDoor.setTranslation(new Vector3f(-rot, 0, 0));
        //rightDoor.setRotation(-rot, AXIS);
      rightDoor.setTranslation(new Vector3f(rot, 0, 0));
      }
      break;     
    case STATE_CLOSING:
      {
        if (rot > 0)
        {
          rot -= fTickTime * SPEED;
          if (rot <= 0)
          {
            rot = 0;
            state = STATE_IDLE;
          }
        }
        else if (rot < 0)
        {
          rot += fTickTime * SPEED;
          if (rot >= 0)
          {
            rot = 0;
            state = STATE_IDLE;
          }
        }
        //leftDoor.setRotation(rot, AXIS);
      leftDoor.setTranslation(new Vector3f(-rot, 0, 0));
        //rightDoor.setRotation(-rot, AXIS);
      rightDoor.setTranslation(new Vector3f(rot, 0, 0));
      }
      break;
    }
  }
 
  /**
   * This method is part of the TrackTriggerListener Interface implementation
   *
   * It will be called if the interface is registered for a trigger using the
   * addTrackTriggerListener method.
   */
  public void onTrainEntering(TrackTrigger trigger, Train train)
  {
    if (trigger == beforeDoorTrigger)
    {
      if (train.getSpeed() > 0)
      {
        state = STATE_OPENING;
        doorSound.play();

        //printTrainPositionAndRotation(train);
      }
    }
    else if (trigger == behindDoorTrigger)
    {
      if (train.getSpeed() < 0)
      {
        state = STATE_OPENING_REVERSED;
        doorSound.play();
      }
    }
  }
 
  /**
   * This method is part of the TrackTriggerListener Interface implementation
   *
   * It will be called if the interface is registered for a trigger using the
   * addTrackTriggerListener method.
   */ 
  public void onTrainLeaving(TrackTrigger trigger, Train train)
  {
    if (trigger == beforeDoorTrigger)
    {
      if (train.getSpeed() < 0)
      {
        state = STATE_CLOSING;
        doorSound.play();
      }
    }
    else if (trigger == behindDoorTrigger)
    {
      if (train.getSpeed() > 0)
      {
        state = STATE_CLOSING;
        doorSound.play();
      }
    }
  }

  // This method demonstrates how to get the position and rotation of the first bogey
  private void printTrainPositionAndRotation(Train train)
  {
    if (train.getBogieCount() > 0)
    {
      Vector3f pos = new Vector3f();
      Vector3f front = new Vector3f();
     
      train.getBogieOrientationAndPosition(0, front, null, null, pos);

      System.out.println(scriptName + ": First bogey is at " + pos);

      double azimuthRad = Math.atan2(front.x, -front.z);
      double elevationRad = Math.atan2(front.y, Math.sqrt(front.x* front.x + front.z* front.z));

      System.out.println(scriptName + ": Yaw is " + Math.toDegrees(azimuthRad) + " degrees");
      System.out.println(scriptName + ": Pitch is " + Math.toDegrees(elevationRad) + " degrees");
    }
  }
}