• Journal of Korea Game Society
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• v.8 no.4
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• pp.55-63
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• 2008

'Jump' control is one of several game controls using mainly in 2D game, and 'Jump' control is also very important in 3D game that has been developed steadily due to the advance of programing technology. 3D MMORPG among some kinds of 3D games is the most popular as on-line game in domestic game market these days. This study will give domestic game developers ideas and solutions through analyzing and testing problems caused by applying 'Jump' control technique as control interface of 3D MMORPG game.

• The KIPS Transactions:PartB
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• v.10B no.5
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• pp.567-574
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• 2003

Application field of third dimension graphic is becoming diversification by the fast development of hardware recently. Various theory of details technology necessary to design game such as 3D MMORPG (Massive Multi-play Online Role Flaying Game) that do with third dimension. Cyber city should be absorbed. It is the detection speed that this treatise is necessary in game engine design. 3D MMORPG game engine has much factor that influence to speed as well as rendering processing because it express huge third dimension city´s grate many building and individual fast effectively by real time. This treatise nay get concept about the collision in 3D MMORPG and detection speed elevation of game engine through improved detection method. Space division is need to process fast dynamically wide outside that is 3D MMORPG´s main detection target. 3D is constructed with tree construct individual that need collision using processing geometry dataset that is given through new graph. We may search individual that need in collision detection and improve the collision detection speed as using hierarchical bounding box that use it with detection volume. Octree that will use by division octree is used mainly to express rightly static object but this paper use limited OSP by limited space division structure to use this in dynamic environment. Limited OSP space use limited space with method that divide square to classify typically complicated 3D space´s object. Through this detection, this paper propose follow contents, first, this detection may judge collision detection at early time without doing all polygon´s collision examination. Second, this paper may improve detection efficiency of game engine through and then reduce detection time because detection time of bounding box´s collision detection.

• Journal of Information Technology Services
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• v.7 no.2
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• pp.137-148
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• 2008

This paper measures and compares the traffic of a series of Massively Multi-player On-line Role Playing Game (MMORPG). The purpose of this analysis is to characterize the MMORPG traffic and compare the traffic characteristics of those games caused by the game structure difference between 2D and 3D environment. The target game is 'Lineage I' and 'Lineage II' which represent world's largest MMORPGs in terms of the number of concurrent users. We collect about 280 giga bytes and 1 tera bytes of packet headers, respectively. We compare packet size, packet inter-arrival time and bandwidth usage of these two games. The MMORPG traffic consists of two kinds of packets: client-generated upstream packets and server-generated downstream packets. We observe that the upstream packet size of payload has grown from 9 bytes to 19 bytes, while the average payload size of downstream packets has grown from 37 bytes to 318 bytes. This asymmetry of growing rate is caused by 3D game structure. Packet inter-arrival time becomes shorter from average 2 milliseconds to 58 microseconds. Bandwidth consumption per client has grown from 4 kbps to 20 kbps. We find that there is a linear relationship between the number of users and the bandwidth usage in both case.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.706-708
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• 2005

MMORPG게임의 구현에 있어서 가장 큰 문제의 하나는 서버와 연결된 클라이언트들 사이의 동기화이다. 이를 위해서 MMORPG게임에서는 grid-based filtering을 적용하여 동기화 문제를 해결하고 있다. 그러나 MMORPG게임의 형태가 이인칭 관점 시점의 2D에서 일인칭 관점의 시점의 3D 게임으로 변함에 따라서 grid-based filtering으로 인한 동기화는 낭비적인 요소를 포함하게 되었다. 즉 일인칭 관점시점의 3D게임에서는 가까운 거리의 캐릭터 사이에도 주변 장애물의 영향으로 비 가시관계에 놓임에 따라서 동기화의 필요성이 없어지는 경우가 생기게 된다. 따라서 본 논문에서는 일인칭 관점 게임의 3D MMORPG게임에서 컴파일 시 각 셀을 중심으로 가시성 테스트를 수행하여 가시영역내의 셀들만을 동기화 대상으로 지정한 후 게임 진행 시 현재 셀 속의 캐릭터들에게 동기화 대상으로 설정된 셀 속의 클라이언트들만을 동기화 시켜줌으로서 통신량을 줄여주는 방법을 제안한다.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.149-150
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• 2016

컴퓨터 게임은 이미 현대 문명에서 중요한 미디어산업으로 성장하였다. 그 중 신화를 다루는 무협 MMORPG는 전세계적으로 게임 산업에서 많은 비중을 차지하고 있다. 본 논문은 동양과 서양의 대표적인 MMORPG 속 캐릭터를 분석해 중국 무협 문화 요소의 응용에 대한 연구를 통해 게임 속 중국 무협 캐릭터 디자인의 장점과 국한성을 이해하고, 현재 중국 무협 MMORPG 시장의 밝은 전망을 토대로 MMOPRG 캐릭터 속 중국 무협 캐릭터 디자인의 특징을 도출해 내고자 한다. 이는 중국 MMORPG 시장이 세계속으로 파고들기 위한 중요한 기준점이 될것으로 사료된다.

• Journal of Korea Game Society
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• v.12 no.6
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• pp.33-46
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• 2012

This research aimed to analyze the way of how flying movement system and background graphic in MMORPG, which provides movement system, influences on users' psychological behavior in order to enhance user's participation and the completion level of 3D game. This research also analyzed the difference between the user's response to the flying movement and other movement structure in game such as things to board, summons, portal, chase, and etc. With this comparative analysis, this study could clarify the characteristics of the user's desire to fly according to the virtual world' topography in game, the necessity of flying movement for fast movement, the dependence of user on flying system, the immersion according to behavior in process of flying, and expression level of virtual world, and etc. The survey through the case research of MMORPG Aion selected for this research showed flying movement system can have suitable quality by applying users' playing time and absorption in flight process, users' impulse following game level, and users' need to fly as a convenience of flying properly.

• Journal of Korea Multimedia Society
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• v.7 no.12
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• pp.1729-1736
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• 2004

This paper proposes an efficient collision detection method in the dynamic spatial subdivisions for the MMORPG engine which requires realtime interactions. An octree is a suitable structure for static scenes or terrain processing. An octree spatial subdivision enhances rendering speed of scenes. Current spatial subdivisions tend to be highly optimized for efficient traversal, but are difficult to update quickly for a changing geometry. When an object moves to the outside extent for the spatial subdivisions, the acceleration structure would normally have to be rebuilt. The OSP based on a tree is used to divide dynamically wide outside which is the subject of 3D MMORPG. TBV does not reconstruct all tree nodes of OSP and has reduced rebuilding times by TBV information of a target node. A collision detection is restricted to those objects contained in the visibility range of sight by using the information established in TBV. We applied the HBV and ray tracing for an efficient collision detection.

• Journal of Korea Game Society
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• v.9 no.3
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• pp.35-42
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• 2009

Analyzing the aspects of pattern in MMORPG that has been leading our domestic game industry to the climax, our game industry might be thought to orient the space narrative storytelling method containing the leading life in the virtual sociality to the nature of society. It is essential to have the convergence and linkage between media in describing the lifestyle in the virtual society, which should be operated in a very flexible manner. It is, however, true that we are lacking of the quantification of designing process until now, although the designing process should have the vivid academic functions between media in advance. In addition, the designing crossing over the MMORPG genre along with the game patterns in the MMORPG genre has close correlations with the spectrum of crises emerging recently in our domestic online game industry. In other words, this essay aims at raising an issue that the selective method to the lifestyle in the virtual society being settled down as characteristics inherent to the methods of our domestic online games might deliver the improving effects through the establishment of game designing jobs and compliant plans.

• Journal of the Korea Computer Graphics Society
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• v.16 no.1
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• pp.21-27
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• 2010

Today the lectures are usually practiced in a teacher-led traditional classroom system or a student-led e-learning system. Students passively follow the teacher's lectures in both systems, though. Also due to the advances in 3D Computer Graphics and Game technologies, there are trials to exploit the positive effect of games in learning. The serious games, specifically designed games for an educational goal, or existing games for a special class have been used as lectures. Still these games have a great difficulty in being integrated into the educational system technically and economically. Therefore a new 3D MMORPG based lecturing system is presented in this paper. In our new lecturing system, the characteristics of a 3D MMORPG, achievement, sociality, and immersion, are provided to motivate students to participate actively in a lecture. A teacher and students interact with each other in realtime as 3D characters in a 3D virtual classroom on-line. An ordinary teacher can also easily apply our new system to existing classes since a teacher only needs to specify a slide file to prepare a lecture. For the future work, a user study and the effect of our new lecturing system will be performed.

• 한국IT서비스학회:학술대회논문집
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• 2006.05a
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• pp.233-240
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• 2006

This paper measures and compares the traffic of a series of Massively Multiplayer On-line Role Playing Games(MMORPG). The target games are 'Lineage' and 'Lineage II' developed by NCsoft, which are ones of the world's largest MMORPGs in terms of the number of concurrent users. We collected about 1 tera bytes of packets of 'Lineage II' for four days including a weekend. These packets are analyzed and compared with those of 'Lineage.' Packet size, packet inter-arrival time, and bandwidth usage are compared. The traffic of the two games shows much difference because original 'Lineage' is a kind of 2-D based MMORPG, while 'Lineage II' is 3-D based. By comparing the characteristics of the traffic of these games, we can anticipate future needs of network and game structure.