Peter Shankar CSE 497 – Topics on AI & Computer Game Programming

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Presentation transcript:

Peter Shankar CSE 497 – Topics on AI & Computer Game Programming Game Design Peter Shankar CSE 497 – Topics on AI & Computer Game Programming

Introduction – Game Design Rules of Play: Game Design Fundamentals Katie Salen & Eric Zimmerman Game Design: Theory & Practice Richard Rouse III

Introduction – Game Design Game design concepts have existed for some time, but recently gained much attention via computer technology Not standardized or process driven – like software engineering Broad conceptual definitions Design -> Game Design -> Computer Game Design

Outline Game Design Core Concepts Design Approaches What is Game Design? Successful Game Design “Meaningful play” Semiotics Systems Interactivity Choice Design Approaches Brainstorming What players want/expect? Sid Meier Interview

What is Design? Design is the process by which a designer creates a context to be encountered by a participant, from which meaning emerges. As it pertains to games: Designer: the individual game designer, or a whole culture Context: spaces, objects, narratives, and behaviors Participants: players Meaning: meaningful play

Successful Game Design The goal of a successful game design is the creation of meaningful play The intellectual dueling of two players in a well-met game of Chess The improvisational, team based coordination of Basketball The Dynamic shifting of individual and communal identities in the online role-playing game EverQuest The lifestyle-invading game Half-Life, played on a college campus

Meaningful Play Two Definitions Descriptive: Emerges from the relationship between player action and system outcome; it is the process by which a player takes action within the designed system of a game and system responds to the action. The meaning of an action in a game resides in the relationship between action and outcome. Evaluative: Occurs when the relationships between actions and outcomes in a game are both discernable and integrated into the larger context of the game. The two ways of defining meaningful play are closely related. Designing successful games requires understanding meaningful play in both senses.

Semiotics Study of meaning. It is primarily concerned with the question of how signs represent, or denote. People use signs to designate objects or ideas. Because a sign represents something other than itself, we take the representation as the meaning of the sign. Example: 6 points in football means a TD

4 Semiotic Concepts A sign represents something other than itself Signs are interpreted Meaning results when a sign is interpreted Context shapes interpretation Structure – Most smoogles have comcom

Systems Has many parts that interrelate to form a complex whole All systems have the following elements: Objects are the parts, elements, or variables within the system Attributes are qualities or properties of the system and its objects Internal relationships are relations among the objects Environment is the context that surrounds the system

Game Systems These four elements (objects, attributes, internal relationships, environment) of a system can be framed differently within a gaming system. Formal Experiential Cultural All three ‘frames’ exist simultaneously

Game Systems Cont. A game as a formal system is always embedded within an experiential system, and a game as a cultural system contains formal and experiential systems. Cultural System Experiential System Formal System

Chess as a Formal System Objects: pieces on the board, the board, etc. Attributes: characteristics given to the objects, defined by the rules Internal Relationships: spatial relationships, positions on the board Environment: the play itself

Chess as an Experiential System Objects: the players themselves Attributes: the pieces a player holds, state of the game Internal Relationships: player interaction, social, psychological, emotional communication Environment: board, pieces, immediate setting of the game -> anything that facilitated the play

Chess as a Cultural System Objects: the game of Chess itself, in its broadest cultural sense Attributes: the designed elements of the game, as well as information on how, when, where, why the game was made and used Internal relationships: linkages between the game and culture Environment: culture itself, in all of its forms

Interactivity 4 modes of interactivity Cognitive interactivity: interpretive participation Functional interactivity: utilitarian participation Explicit interactivity: participation with designed choices and procedures Beyond-the-object-interactivity: participation within the culture of the project

Interactivity in Game Design 3rd mode (explicit interactivity) comes closest to defining what we mean when we say games are interactive Interactivity and gameplay are often synonymous Designed interaction Rolling dice on a craps table vs. rolling an apple

Choice Micro level: each decision at it’s smallest level Macro level: the accumulated choices to form a larger choice/outcome Players should understand that their choices at the micro level influence choices at the macro level

Diagnosing Choice Ask these questions for every choice made: What happened before the player was given the choice? How is the possibility of a choice conveyed to the player? How did the player make the choice? What is the result of the choice? How will it affect future choices? How is the result of the choice conveyed to the player?

Diagnosing Choice – Failure States Feeling as if decisions are arbitrary Not knowing what to do next Losing a game without knowing why Not knowing if an action had an outcome

Putting Game Design Concepts Together Players look for “meaning” to their play. Want to interact in systems Formal, experiential, cultural Semiotics – meaning through representation Interactivity is gameplay Choice is tricky, we want a players choices to be meaningful on a macro/micro level

Game Design Procedures No standard procedures Understanding what players want/expect Brainstorming Sid Meier

Successful Computer Game Design – What do players want? Challenge Socialize Dynamic experiences Bragging rights Emotional experience Fantasize

Successful Computer Game Design -What do players expect? A consistent world Understand the world bounds Reasonable solutions to work Direction Accomplish incremental tasks Immersion

Successful Computer Game Design -What do players expect? (cont.) Fail Fair chance Not need to repeat themselves Not get hopelessly stuck Do, not watch Don’t know what they want, but know it when they see it

Brainstorming a Computer Game Starting Points Working with Limitations Established Technology

Starting Points Starting with Gameplay Starting with Technology Starting with Story

Working with Limitations Embrace Your Limitations Odyssey: The Legend of Nemesis Damage Incorporated Centipede 3D

Odyssey: The Legend of Nemesis Designed around the story Non-linear, very dynamic Author overtook design of this game Some technology already developed Added some AI features to make it work for him The technology and gameplay largely supported what he wanted to do with the story

Damage Incorporated Designed around technology Had games like Marathon and Marathon 2 in mind MacSoft obtained a sophisticated license to some technology that they wanted to implement in a game Crafted gameplay/story around the technology so the story would take full advantage

Damage Incorporated

Centipede 3D Game mechanics similar to original Started with gameplay Set out to look for an engine that could handle the game Not much of the story – they wanted to capture the simple playability of the original

Centipede 3D

Established Technology The Case of the Many Mushrooms Centipede 3D Escalating polygon counts – slowed down play The Time Allotted Project time considerations New technology developed

Sid Meier Interview Serves as both lead programmer and lead designer Personal decision Primary tool is the prototype History, story, behind the game 3-4 cool things that are going to happen in the game Giving the team a good sense of what the game should be Don’t make it complete Leave room for expansion/deviation

Sid Meier Interview Cont. Technology is ready for a certain type of game Topic before genre What makes games interesting is many interoperating systems Changing game state Dramatic changes from the beginning to the end of the game – Railroad Tycoon

Sid Meier Interview Cont. Addictive play “interesting decisions” Many things happening at the same time Figure out what is the interesting part about the theme Let the player use his own knowledge in making decisions Reward players, setup milestones

Sid Meier Interview Cont. Game design is a slow process Does not follow processor speed, video card advancements etc. Build on what’s been done before Games have a personal touch Development is largely done in big groups now But good games have some insight on the individual level

Conclusion Game Design is ultimately a creative process and everyone develops differently But there are some things successful games have in common People want to make meaningful choices They like to see the functioning of many systems They like dynamic states