Animated Campus Vehicles: Difference between revisions
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- Build a program or script to have the vehicle follow a given path |
- Build a program or script to have the vehicle follow a given path |
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==EZScript |
==EZScript Usage== |
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===Our Implementation=== |
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The EZScript module is responsible for the vehicle movements within the world. EZScript cell-scripting allows for a JavaScript based script file to be executed on a cell. More documentation can be found [http://wiki.openwonderland.org/Wiki.jsp?page=JagWire here]. |
The EZScript module is responsible for the vehicle movements within the world. EZScript cell-scripting allows for a JavaScript based script file to be executed on a cell. More documentation can be found [http://wiki.openwonderland.org/Wiki.jsp?page=JagWire here]. |
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For this motion to function, the vehicle which is being moved must have the motion module attached to it and all way point objects must have EZScrpit enabled so that they can be interacted with using commands from the vehicle. It is further essential that the latest version of EZScript build be used which can be accessed from the googlecode repository. |
For this motion to function, the vehicle which is being moved must have the motion module attached to it and all way point objects must have EZScrpit enabled so that they can be interacted with using commands from the vehicle. It is further essential that the latest version of EZScript build be used which can be accessed from the googlecode repository. |
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Revision as of 06:46, 15 May 2012
This page describes how EZScript was used to animate campus vehicles
Project Description
The Animated Campus Vehicles project is a subproject of the Virtual BU project. This project's goals were to:
- Create a campus maintenance vehicle (Humvee golf cart)
- Build a program or script to have the vehicle follow a given path
EZScript Usage
Our Implementation
The EZScript module is responsible for the vehicle movements within the world. EZScript cell-scripting allows for a JavaScript based script file to be executed on a cell. More documentation can be found here. For this motion to function, the vehicle which is being moved must have the motion module attached to it and all way point objects must have EZScrpit enabled so that they can be interacted with using commands from the vehicle. It is further essential that the latest version of EZScript build be used which can be accessed from the googlecode repository.
To create a path the user must place down a series of objects in the world and name them given a the scheme <Group_Name>-<WayPoint_Number>. WayPoint Numbers also start at 1 and not 0 (as would be conventional for an array). Using this scheme one can use basic string concatenation and a loop to iterate through all of the way points in a given group.
Where to download
Professor Steflik has been given a copy of EZScript compatible with the script written. However, openwonderland can be checked out via subversion from googlecode and built on linux using ant. Instructions can be found here.
Future Development
If this project is to be continued in the future, make note that Jagwire has added EZScript functionality very recently (see rotate and GetCellRotation) that will help aid the addition of a smoother motion around corners. Unfortunately, these updates weren't pushed to subversion in time to make the stable final script.
Vehicle Development
The Binghamton University maintenance vehicle was developed using Google SketchUp 8. The vehicle was oriented in Sketchup such that positive motion on the Z-axis in OpenWonderland represents the vehicle driving straight (when there is no rotation on the Y-axis).
Bugs/Fixes
Bug found with EZScript when using the EZScript function GetCellRotation when used at a high rate. Jagwire, the creator of EZScript, continuously fixes and updates EZScript. All bugs and possible fixes we found have been reported to him.
