CoSECiVi'15 - Towards real-time procedural scene generation from a truncated icosidodecahedron

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Sociedad Española para las Ciencias del Videojuego

Abstract. The procedural method is cutting edge in gaming and virtual cities generation. This paper presents a novel technique for procedural real-time scene generation using a truncated icosidodecahedron as basic element and a custom physics system. This can generate a virtual museum in an interactive-way. For doing this, we have created a simple interface that enables creating a procedural scenario regarding the user-specified patterns, like number of pieces, connection mode, seed and constraints into the path. The scene is generated around three dimensional edges meaning a new point of view of hypermuseums. It has its own physics system to adapt the movement through the three dimensions of the scene. As a result, it allows the user to create a procedural scene in almost real-time where a user character can go over the 3D scene using a simple interactive interface.

Towards Real-time Procedural Scene
Generation from a Truncated
Icosidodecahedron
Francisco M Urea
Alberto Sánchez

Index
Introduction
Model Description
Selection of Useful Faces
Path Generator
Custom Physics
Spacial Division
Future Work & Conclusion

Introduction
Related Works
A survey on procedural modelling for virtual worlds
Ruben M. Smelik et al.
Aim: A complete survey with different procedural methods useful to generate features
of virtual worlds.
Real-time procedural generation of ‘pseudo infinite’ cities
Stefan Greuter et al.
Aim: Describe a generation of “pseudo infinite” procedural city.
Building virtual and augmented reality museum exhibitions
Rafal Wojciechowski et al.
Aim: Generates virtual content in which visitors can interact on a display
or via web.

Model description
Dodecahedron Icosahedron Icosidodecahedron
Icosidodecahedron Romb-Triacotahedron Icosidodecahedron
truncado
+ =
+ =

Selection of Useful Faces
Figure 1 Figure 3Figure 2
Useful faces: face selected
Border faces: faces connected to a face
Limit faces: face without all their border faces

Selection of Useful Faces
1 7 8 1
43 1 7 8
2 3 4
9 12
Avaible faces Limit face Border faces
All faces Face to add Inaccesible faces
3
1
78
3
42 4

Selection of Useful Faces
Connection mode
Full
Add all border faces, then change limit face.
Lineal
The new face is the new limit face.
Random
Random face selection.

Generation of a TI
+
Rotation
Traslation
=

Path generator
11 12 13 14 15
1 2 3 4 9 5 6 7 8 10 16 17
16 17 18 19
11 1616
Available TI TI to Check
Full TI Border TI TI to rebuild
Actual TI TI checked Delete

Path Generator
TIs Union
New center= 2 ∗ 𝑃𝑜𝑠 𝑐𝑜𝑟𝑟𝑖𝑑𝑜𝑟 − 𝐶𝑒𝑛𝑡𝑒𝑟𝑇𝐼

Path Generator
Union of TIs
Border face from
Inception face
Border face from
limit face
TI father
New TI

Path Generator
Collisions detection
Have
GhostLayer?
Mark to destroy Do nothing
Does the TI
belong to a lower
order?
Is the TI of
lower order?
Add collider TI to
collision list
No
Does it belong to
TI father?
No
Yes
Yes Yes
No
Yes
No

Path Generator
Collision Detection
Can be rebuild
Add collided face to block face list.
Generate new face selection.
Regenerate the TI
Check again collision

Path Generator
Collision Detection
Can not be rebuild
Delete the TI
Repair TI’s father

Custom Physics
The character controller is covered by spherical
gravitational field.
Force
Force

Space Division
Virtual space was voxelizated into cubes with the
same size as TI
A margin was created to avoid uncontroled collision
and limit the representation

Result
Children Rebuild Repair Check Move Total
FIREFOX -PLAYER- YOUTUBE-HIBERNATE 240,2 104,6 36,4 416 2,4 799
FIREFOX-PLAYER 228,6 99,8 35,4 397,4 2 769,2
UNITY-EXCEL 229,4 101,4 36 377,8 2 751,8
FIREFOX-CHROME-OPERA- ALL YOUTUBE 241 103,4 36 392,2 2 784,4
GTX660M 226,6 99,6 35,2 391,8 2 760,8
UNITY 226,8 100 35,4 399 2,2 769
RESTARTED 226,8 98,6 41,8 387,8 1,8 761,8
Average 231,34 101,06 36,60 394,57 2,06 770,86
Standar Deviation 5,94 2,04 2,16 10,87 0,18 14,77
0
100
200
300
400
500
600
700
800
900
children
rebuild
repair
check
move
total

Conclusion
This paper presents a new procedural technique to
generate a hypermuseum
from a TI. It could be adapted to generate any kind of
scene.

Conclusion
The user walks into an infinite 3D scene created at the
same time that it is gone over.

Conclusion
This kind of procedural generation presents a new
point of view to understand hypermuseums.

Future Works
Improvement of collision system
Creation of custom collision system
Adapt other kinds of figures to work, making more
complex scenes and better adapted to the user needs

Questions or Comments
Francisco M Urea Galán
franciscoMurea@gmail.com
@Black_malzar

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CoSECiVi 2020 - Entornos parcialmente no euclidianos en realidad virtual

Sociedad Española para las Ciencias del Videojuego

Artículo publicado en el reciente CoSECiVi 2020, celebrado online el 7 y 8 de octubre de 2020. RESUMEN: Actualmente los entornos de Realidad Virtual están limitados al espacio de trabajo del que disponen los usuarios, siendo necesario buscar nuevas formas de aprovechar al máximo este espacio disponible en los diseños de experiencias virtuales. En el presente artículo se plantea un método de generación de espacios geométricamente superpuestos mediante el uso de unos portales imperceptibles para el usuario. Gracias a estos portales es posible crear una ruptura momentánea en la geometría euclidiana convencional, logrando así la generación de infinitos mundos virtuales dentro de un ́unico espacio de trabajo físico. Pese a que esta clase de efectos se ha podido observar en videojuegos tradicionales, su aplicación en entornos virtuales tiene varias implicaciones técnicas, las cuales son detalladas y definidas en el presente artículo. Así mismo, en este artículo se discuten las implicaciones perceptuales que este efecto visual podría tener en los usuarios, abriendo la posibilidad a nuevos estudios asociados a este efecto de computación gráfica.

CoSECiVi 2020 - An Exploration on Automating Player Personality Identificatio...

Sociedad Española para las Ciencias del Videojuego

Artículo publicado en el reciente CoSECiVi 2020, celebrado online el 7 y 8 de octubre de 2020. RESUMEN: When creating videogames, designers adjust the game characteristics to optimize the experience of the target players. This design process is usually manual, and the amount of insight that videogame designers have over the player is limited. Identifying the psychological profile of a videogame user can lead to specific adaptation of videogame aspects like narrative, length or challenge. Additionally, performing this identification automatically can both leverage the game experience and reduce the amount of work needed for customizing the players’ experience. This research describes an emergent methodology to automatically create the personality profile of a player, and a prototype implementation. Additionally, a pilot study has been run, with preliminary but promising results.

CoSECiVi 2020 - Data mining of deck archetypes in Hearthstone

Sociedad Española para las Ciencias del Videojuego

Artículo publicado en el reciente CoSECiVi 2020, celebrado online el 7 y 8 de octubre de 2020. RESUMEN: Computer games have become a very interesting environment or testbed to develop new algorithms in many of the branches of Artificial Intelligence. In fact, collectible card games, such as Hearthstone, have recently attracted the attention of researchers because of their characteristics: uncertainty, randomness, or the infinite and unpredictable interactions that can occur in a game. In this game each playercomposes decks to face other players from a pool of more than 3,000 cards, each one with its own rules and statistics. This implies a great variability of decks and card combinations with rich effects. This paper proposes the use of clustering techniques to extract information from data provided by Hearthstone players, i.e. a Game Mining approach. Todo so, more than 500,000 decks created by game players (both experts and just enthusiasts) have been downloaded from Hearthpwn website.Thus, a descriptive analysis of this dataset, along with Data Mining techniques, have been carried out in order to understand which archetypes (or deck types) are the favourites among the community of players, and what relationships can be identified between them. The results show that it is possible to use clustering algorithms such as K-Means to automatically detect the archetypes used by the players.

CoSECiVi 2020 - Descubrimiento de modelos de comportamiento de perfiles de ju...

Sociedad Española para las Ciencias del Videojuego

Artículo publicado en el reciente CoSECiVi 2020, celebrado online el 7 y 8 de octubre de 2020. RESUMEN: Los juegos serios facilitan el aprendizaje de capacidades enentornos educativos por su carácter lúdico. El desarrollo de juegos perso-nalizados facilita alinear la experiencia lúdica con los intereses de aprendizaje concretos, a la vez que permite el registro de la actividad de losjugadores. Sin embargo, la información que se genera puede ser demasiado voluminosa para analizarse con técnicas manuales. En este artículo proponemos aplicar minería de procesos a los datos resultantes de un juego serio. En concreto, se aplica descubrimiento de modelos a un juego serio desarrollado al efecto para aprender modelado conceptual de datos en un sistema informático. En el juego se registra información detallada de cada partida, incluyendo no solo el resultado final sino también cómo el jugador ha llegado a él. Los resultados preliminares en el contexto real de una asignatura del Grado en Ingeniería Informática permiten analizarde manera escalable la información producida por los estudiantes mediante los perfiles que se generan. De este modo, se obtienen evidencias del comportamiento de perfiles específicos de estudiantes para proporcionar retroalimentación o incluso evaluar a los alumnos.

CoSECiVi 2020 - Virtual Reality and Chess. A Video Game for Cognitive Trainin...

Sociedad Española para las Ciencias del Videojuego

Artículo publicado en el reciente CoSECiVi 2020, celebrado online el 7 y 8 de octubre de 2020. RESUMEN: Objective: The treatment of ADHD is multimodal: pharmacological, psychoeducational and cognitive. Currently, cognitive treatment is expensive and unattractive for most patients diagnosed with ADHD, which might lead to halting therapy. To alleviating this deficit, we have created a therapeutic video game, called The Secret Trail of Moon (TSTM), based on Virtual Reality allied with a gamified version of chess. The combination of Virtual Reality, video game and chess allows a greater immersion of training, adherence and transference to daily life. Materials and Methods: The video game is based on Thomas Brown's psychological theories on the executive dysfunction of ADHD patients and Barkley's model of Behavioral Inhibition. TSTM is composed of 6 different mechanics to work with: attention, memory, planning, visuospatial capacity, impulse control and reasoning. The technology used has been VR goggles, an actual gaming console and a standalone application. The software runs on a PlayStation 4 test device. Results: TSTM has been elaborated in three phases: 1) Theoretical foundation, design and programming; 2) Validation and proof of concept phase; 3) Clinical trial phase. The validation and proof of concept phase allowed us to improve TSTM according to the users' experience in order to achieve a more powerful cognitive training. Currently, TSTM is in the third phase. The main hypothesis is that TSTM training produces improvements in patients with ADHD. Conclusions:This article shows the development of the creation of TSTM. Currently, TSTM is undergoing its first clinical trial to demonstrate efficacy in the treatment of patients with ADHD.

CoSECiVi'16 - Hacia la generación automática de mecánicas de juego: un edito...

Sociedad Española para las Ciencias del Videojuego

RESUMEN. Este artículo es parte de un trabajo emergente dirigido a la creación automática de juegos de estrategia en tiempo real (RTS), lo cual incluye la generación de contenido, la creación de la inteligencia artificial del juego (es decir, de los jugadores virtuales) y de la propia mecánica del mismo. En este artículo se describe un editor que consta de múltiples parámetros que pueden configurarse para activar o desactivar decenas de reglas que pueden cambiar la mecánica de un juego RTS. El trabajo aquí descrito se realiza en el contexto del juego Eryna, una plataforma de experimentación implementada en la Universidad de Málaga. El editor de reglas es una herramienta que será usada en el futuro para permitir la evolución automática de las reglas de este videojuego y la creación de distintas mecánicas para el mismo. Lo que presentamos aquí debe ser evaluado como un trabajo emergente en el cual estamos trabajando.

CoSECiVi'16 - Computación Efímera: identiﬁcando retos para la investigación e...

Sociedad Española para las Ciencias del Videojuego

RESUMEN. La Computacion Efímera (Eph-C , por sus siglas en inglés, Ephemerical Computing) es un nuevo paradigma de computación de reciente creación que pretende sacar provecho de la naturaleza pasajera (o sea, asociada a un tiempo de vida limitado) de los recursos computacionales. En este trabajo se introduciría este nuevo paradigma Eph-C de forma general, y se irá poco a poco enfocando específicamente dentro del contexto del proceso de desarrollo de videojuegos, mostrando posibles aplicaciones y beneficios dentro de las principales líneas de investigación asociadas a la creacion de los mismos. Se trata de un trabajo preliminar que intenta indagar en las posibilidades de aplicar la computación efímera en la creacion de productos en la industria del videojuego. Lo que presentamos aquí debe ser valorado como un trabajo preliminar que intenta a su vez servir de inspiración para otros posibles investigadores o desarrolladores de videojuegos.

CoSECiVi'16 - Walking in VR. Measuring Presence and Simulator Sickness in Fir...

Sociedad Española para las Ciencias del Videojuego

ABSTRACT Presence is often used as a quality measure for virtual reality experiences. It refers to the sensation of "being there" that users feel while wearing a head-mounted display. In contrast, simulator sickness refers to the feeling of unease of some users while experiencing virtual motion. Nowadays, many virtual reality games do not allow the player to walk, trying to minimize the generation of unpleasant symptoms. This study explores how presence is affected by the ability to walk in VR games, as well as how simulator sickness actually grows when the player takes a virtual stroll. For this purpose, two prototypes of a small puzzle were built. In the first one, the player is able to walk, whereas the second one does not allow the user to move in any way. Presence and simulator sickness were measured using standard questionnaires while real players faced our puzzle. The results point to a strong correlation between the action of walking and an increment of the level of presence achieved by the subjects. However, there is no clear correspondence between walking and simulator sickness in our experiment. This last observation opens the way for further research and questioning of early studies about simulator sickness, as technical differences between current virtual reality devices and older ones may in uence how uncomfortable users feel while wearing them.

CoSECiVi'16 - Extensión de los grafos de dependencia para incrementar la reju...

Sociedad Española para las Ciencias del Videojuego

RESUMEN: Carlos, Rey Emperador es un juego de estrategia ambientado en la época de Carlos V. Además de la simulación del reino y de cómo las políticas utilizadas afectan a la fidelidad del pueblo, el juego presenta al usuario eventos históricos (reales o inventados para el juego) que debe intentar solucionar y cuyo resultado afecta a los siguientes sucesos en el juego. Para aumentar la rejugabilidad evitando caer en partidas repetidas con la misma sucesión de eventos, se han extendido los grafos de dependencias utilizados en otros juegos.

CoSECiVi'16 - Sólo puede quedar uno: Evolución de Bots para RTS basada en sup...

Sociedad Española para las Ciencias del Videojuego

RESUMEN: Este artículo propone un algoritmo evolutivo para optimizar el comportamiento de bots (NPCs) que no requiere de una función de fitness explícita, usando en su lugar combates por pares (a modo de "justa") en los que sólo uno de los contendientes sobrevivirá. Este proceso hará las veces de mecanismo de selección del algoritmo, en el que sólo los ganadores pasarán a la siguiente generación del mismo. Se ha utilizado un algoritmo de Programación Genética, diseñado para generar motores de comportamiento para bots del conocido RTS Planet Wars. Este método tiene dos objetivos principales: en primer lugar, paliar el efecto que la naturaleza "ruidosa" de la función de fitness añade a la evaluación y, en segundo lugar, generar bots más generales (menos especializados) que los que se obtienen mediante algoritmos evolutivos en los que se usa siempre un contendiente común para evaluar los individuos. Más aún, la omisión de un proceso de evaluación explícito reduce el número de combates necesarios para evolucionar, lo que reduce a su vez el tiempo de cómputo del algoritmo. Los resultados demuestran que el método converge y que es menos sensible al ruido que otros métodos más tradicionales. Además de esto, con este algoritmo se obtienen bots muy competitivos en comparación con otros bots de la literatura.

CoSECiVi'16 - Living-UGR: Una aventura gráfica geolocalizada para difundir el...

Sociedad Española para las Ciencias del Videojuego

RESUMEN: El presente artículo describe una aplicación para dispositivos móviles desarrollada en el marco de un proyecto de investigación cuyo objetivo es fomentar las visitas al patrimonio, tanto cultural como académico y científico, de la Universidad de Granada (España). Dicha aplicación se ha planteado como un juego serio que hace uso de mecanismos de geolocalización para ofrecer una experiencia gamificada que guiará la visita del usuario a través de varios centros del complejo universitario. El juego se desarrolla como una aventura gráca en la que el jugador/usuario es protagonista, y plantea una gran diversidad de desafíos que combinan aspectos físicos e intelectuales para incentivar al jugador a recopilar las "piezas" distribuidas por los distintos edificios con el n último de dar vida (o no) a un nuevo Frankenstein. Actualmente se dispone de un prototipo de la aplicación/juego que será probado próximamente en una experiencia organizada con varios grupos que competirán para crear el Frankenstein en menos tiempo. Esta experiencia permitirá analizar la efectividad del juego en el objetivo con el que fue diseñado: motivar a locales y turistas a visitar el patrimonio de la Universidad de Granada y adquirir conocimientos sobre el mismo.

CoSECiVi'16 - Desarrollo de una plataforma basada en Unity3D para la aplicaci...

Sociedad Española para las Ciencias del Videojuego

La utilización intensiva de diferentes técnicas relacionadas con la Inteligencia Artificial (IA) en el área de los videojuegos ha demostrado ser una necesidad para el campo. El uso de estas técnicas permite dotar de una mayor flexibilidad y adaptabilidad a los juegos que es muy apreciada por los jugadores. Temas como la generación procedimental de contenido, la creación de agentes que puedan jugar a un videojuego de forma competente, o de agentes cuya conducta sea indistinguible de la de un jugador humano atraen a una cantidad creciente de investigadores. El objetivo de este trabajo es la presentación de una plataforma basada en el motor Unity3D que permita de manera simple la integración y prueba de algoritmos de IA. La plataforma ofrecerá como nuevas características, adicionales a las ya disponibles en la actualidad, la utilización de un entorno 3D, el desarrollo de un juego innovador (basado en múltiples agentes), y la exploración de aspectos de juego como el análisis del terreno, la cooperación entre agentes independientes y heterogéneos, la comunicación de información entre los mismos y la formación de jerarquías.

CoSECiVi'16 - Educapiz: Una herramienta para educación infantil basada en ser...

Sociedad Española para las Ciencias del Videojuego

ABSTRACT: La tecnología está cada vez más presente en todos los aspectos de nuestra vida, la utilización de los videojuegos y las técnicas basadas en gamificación se están convirtiendo rápidamente en una necesidad en las aulas. Actualmente, la utilización de ordenadores, tablets o Pizarras Digitales Interactivas (PDIs) se ha convertido en una realidad en la mayoría de aulas de colegios de educación primaria o secundaria. Estos dispositivos son habitualmente utilizados por los educadores para facilitar el acceso a repositorios de datos online, para la exposición de temas, vídeos, etc. Este trabajo presenta una nueva aplicación, llamada Educapiz, que ha sido diseñada e implementada siguiendo principalmente factores de usabilidad y gamificación. Se ha diseñado una herramienta de autor enfocada a las necesidades de los docentes que permitirá: la creación de juegos para educación (inicialmente se han diseñado un conjunto de juegos para 6º de primaria), desarrollo de una arquitectura web que permita la compartición de los recursos generados, diseño de una arquitectura que permita el posterior análisis del sistema creado. Por último se han realizado un conjunto de pruebas con la herramienta sobre un total de 73 alumnos de 6º de primaria, obteniendo un análisis inicial de la usabilidad de la herramienta creada.

CoSECiVi'15 - Predicting the winner in two player StarCraft games

Sociedad Española para las Ciencias del Videojuego

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