VRML Speech-Enabled Game Duan Togner (togned1@fel.cvut.cz) David - - PowerPoint PPT Presentation

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Aug 10, 2023 443 likes •540 views

IBM - CVUT Student Research Projects VRML Speech-Enabled Game Duan Togner (togned1@fel.cvut.cz) David Vitou (vitoud1@fel.cvut.cz) Objectives Design and implement interface between VRML97 and CIMA toolkit Introduce this interface

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IBM - CVUT Student Research Projects

VRML Speech-Enabled Game

Dušan Togner (togned1@fel.cvut.cz) David Vitouš (vitoud1@fel.cvut.cz)

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IBM - CVUT Student Research Projects 2

Objectives

Design and implement interface between

VRML97 and CIMA toolkit

Introduce this interface in multimodal

game/edutainment software for preschool children

Evaluate proposed solution, offer

alternative approach

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IBM - CVUT Student Research Projects 3

(1) - VRML

Plug-in selection

– popularity x age (Cortona, Cosmo, Xj3D) – Java support (blaxxun, Octaga) – usability (Cybertown)

Caveats (Cortona)

– downgrading to v4.2 – MS VM, Java 1.1

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IBM - CVUT Student Research Projects 4

(contd.) - VRML

Static world architecture

– modular design (location independency) – multiple game modes

restrictive (challenge)
open (free mode)

– interactive guide (little robot)

Caveats

– Inline node limitations (referencing)

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IBM - CVUT Student Research Projects 5

(2) - VRML and Java

Java as the middleman between VRML and

CIMA (VRML constraints)

Accessing VRML

– JSIF, i.e. Script node (more VRML programming and MS VM headaches, less control over global scene, impossible policy) – Extended Authoring Interface (EAI) - applet

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IBM - CVUT Student Research Projects 6

(3) - Java Applet

VRML control via EAI
Event driven game engine (dual modal)

– mouse click or proximity (from VRML) – speech generated (from CIMA)

Caveats

– applet security (threads, sockets) – MS VM + old Java nightmare

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IBM - CVUT Student Research Projects 7

(4) – Java Applet and CIMA

Simple client/server model (TCP/IP)

– CIMA running as server, client browser parents the applet and VRML world

CIMA messages in JSON format (basic

client-side parser)

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IBM - CVUT Student Research Projects 8

Future Improvements

Gameplay

– improve interaction (priority) – enlarge game world, add locations and objects, enhance graphics

Ultimately, abandon applet approach in