Ophelia User-friendly Network Multi-player Game Engine Albert Öhrling

Project Goals To create a game engine for networked multiplayer games.

Project Goals To create a game engine for networked multiplayer games. It will be possible to program games as if they were local multiplayer titles.

Project Goals To create a game engine for networked multiplayer games. It will be possible to program games as if they were local multiplayer titles. The engine is accessed from a user-friendly interface.

Requirements A set of basic systems to create games from.

Requirements A set of basic systems to create games from. Object Management

Requirements A set of basic systems to create games from. Object Management Messaging

Requirements A set of basic systems to create games from. Object Management Messaging Graphics

Requirements A set of basic systems to create games from. Object Management Messaging Graphics Input

Requirements A set of basic systems to create games from. Object Management Messaging Graphics Input Movement

Requirements A set of basic systems to create games from. Object Management Messaging Graphics Input Movement Collision Detection

Requirements A set of basic systems to create games from. A suitable test environment

Requirements A set of basic systems to create games from. A suitable test environment A set of useful development tools

Development Tools

Architecture

Event-Driven Design Game modules communicate with events and callbacks.

Event-Driven Design Game modules communicate with events and callbacks. All custom scripts are invoked on events.

Objects Game Objects are modular

Objects Game Objects are modular

Objects Game Objects are modular Game Object are malleable

Objects Game Objects are modular Game Object are malleable Developers can define their own templates

Objects Game Objects are modular Game Object are malleable Developers can define their own templates Developers can define their own feature modules

Synchronization Game state synchronization is invisible

Synchronization Game state synchronization is invisible Achieved with custom setters

Synchronization Game state synchronization is invisible Achieved with custom setters

Synchronization Game state synchronization is invisible Achieved with custom setters Only update game state when the server notifies the client.

Synchronization Game state synchronization is invisible Achieved with custom setters Only update game state when the server notifies the client.

Problem Developers have to pay attention to on which machines their scripts execute.

Solution

Synchronization changes

Solution Synchronization changes

Problem Sending messages at the same time does not guarantee that they arrive simultaneously.

Solution Batch state changes that occur in the same update tick.

Solution Batch state changes that occur in the same update tick. Distribute them to the clients as a single message when the next tick begins.

Project Goals To create a game engine for networked multiplayer games.

Project Goals To create a game engine for networked multiplayer games. Success!

Project Goals To create a game engine for networked multiplayer games. Success! It will be possible to program games as if they were local multiplayer titles.

Project Goals To create a game engine for networked multiplayer games. Success! It will be possible to program games as if they were local multiplayer titles. Success!

Project Goals To create a game engine for networked multiplayer games. Success! It will be possible to program games as if they were local multiplayer titles. Success! The engine is accessed from a user-friendly interface.

Project Goals To create a game engine for networked multiplayer games. Success! It will be possible to program games as if they were local multiplayer titles. Success! The engine is accessed from a user-friendly interface. Success!

Example

Evaluation All design goals were met.

Evaluation All design goals were met. Most importantly; making games with the engine is easy.

Evaluation All design goals were met. Most importantly; making games with the engine is easy. When problems arose I was able to solve them with good tools.

Evaluation All design goals were met. Most importantly; making games with the engine is easy. When problems arose I was able to solve them with good tools. Testing in a real environment would have been nice.

Questions?