Source Engine Infosheet.pdf

LICENSING

information sheet

ENGINE

INTRODUCTION

The Source™ engine technology, the same used

to power Half-Life ® 2, is now available for

license by third party developers. Source

provides major enhancements in several key

areas including character animation, advanced

AI, real-world physics, and shader-based

rendering.

scripted events featured in previous generations

of games, and open the door for the creation of

completely new styles of play.

Source contains robust networking code,

providing support for 32-player LAN and

Internet games, and includes a complete toolset

for level design, character animation, demo

creation, and more.

Source's animation system brings expressive

characters to life with an unlimited palette of

facial expressions that allow them to convey a

message without having to say a word. In

addition, these characters possess the industry's

most advanced artificial intelligence, making

them extremely capable allies and foes.

Pricing

Source offers the most advanced features, tools,

and support at extremely competitively prices.

Discussed under NDA.

These characters populate beautifully rendered

and physically simulated worlds. Next

generation applications will require the use of a

physics simulation to provide realistic and

responsive environments. This will allow

developers to break from authoring the pre-

For more information, please contact

sourceengine@valvesoftware.com.

Water refraction, High-Dynamic Range lighting, and advanced AI greatly enhance visual fidelity and believeability in Source.

SOURCE ™

ENGINE FEATURES

RENDERER

Version 2.0b (and below) DirectX

shaders, bump mapping, LOD on

models and world

Author shaders with HLSL

Cube and environment mapping

Dynamic lights, vertex lighting and

light maps, many light types

including flickering, pulsing etc.

High-Dynamic Range lighting

Water with refraction and fresnel

effects

Advanced particle system that can

emit sprites or models

Projected shadows allow for a large

number of characters per scene

Intelligent graphics caching system

Occluder entities for visibility

blocking

Indoor/Outdoor environments

· Deformable terrain

· 3D skyboxes extend the horizon

and add parallax on distant

objects

· Dynamically rendered organics

(grass, trees etc)

Subdivision surfaces, diffuse &

specular bump maps

Real-time radiosity lighting

Effects include but are not limited

to: particles, beams, volumetric

smoke, sparks, blood, environmental

effects like fog and rain

Scalability

· Dx6-Dx9 hardware supported

MATERIALS SYSTEM

Instead of traditional textures,

Source defines sets of materials

that specify what the object is made

from and the texture used for that

object. A material specifies how an

object will fracture, sound when

dragged across another surface or

broken , as well as the object’s mass

and buoyancy. This system is much

more flexible than other texture

only based systems.

Materials can also interact with

objects or NPCs. For instance, mud

or ice can make sounds and cause

vehicles to slide/lose traction.

BUMPMAPPING

DISPLACEMENT

MAPS WITH

BUMPMAPPING

VOLUMETRIC

EFFECTS

MONITORS +

CAMERAS

STATIC

PROPS

REFLECTION +

REFRACTION

DETAIL

PROPS

PARTICLE

SYSTEM

Source enables DX9 shaders written in HLSL

Create expansive and highly-detailed outdoor environments.

SOURCE TM

ENGINE FEATURES (Cont’d)

Players and non-player characters are physically simulated, and possess the ability to interact with objects and vehicles.

MULTIPLAYER

NETWORK CODE

Time and gamer tested by millions

of gamers around the world

Support for both LAN based

multiplayer and Internet based

multiplayer games

Prediction analysis for

interpolating collision/hit detection

Optimizations for high-latency,

high-packet loss 56k connections

Simulated musculature provides

outstanding emotions, speech and

body language

Language independent speech,

characters can naturally speak in

many languages

Skeletal/bone system for animation

Layered animation system can

synthesize complex animations out

of several pieces

Can be controlled by level design

Kinematic animated bone followers

Custom procedural physics controllers

Vehicles

· Wheels slip and skid

· Realistic suspensions

· Tunable parameters:

Horsepower, gearing, max

speed, shift speed, tire material,

tire friction, spring

tension/dampening, etc.

· Multiple players in a vehicle

· Hovercraft

ADVANCED CHARACTERS

Detailed and believable characters

provide intelligent player

interaction

Realistic eyes

· Focus on player/object, not

simply parallel views

· Proper eye "bulge" for realistic

eye reflections

PHYSICS

More responsive world with

realistic interactions

Sounds & graphics follow from

physics

AI characters can interact with

physically simulated objects

World-class machines, constraint

systems and ragdoll physics

Ropes and cables move realistically

when bumped or hit by an object

SOURCE TM

ENGINE FEATURES (Cont’d)

Source’s advanced AI create intelligent, life-like characters.

Source includes a powerful suite of sound technologies.

ADVANCED AI

Graphical entity placement allows

level designers to quickly control

the interactive gaming environment.

Sophisticated navigation:

characters that run, fly, jump,

crouch, climb stairs and ladders,

and burrow underground

Senses things using sight, sound,

smell

Determines relationships such as

friend/foe status of other entities

Battle capabilities allow squads of

AI characters to operate together,

know when to advance, retreat, lay

cover fire, etc.

Provides for intelligent character

interaction during non-combat

scenes.

SOUND

5.1 surround sound, 4 speaker

surround

High-quality 3D spatialization

Custom software DSP

Automatic DSP based on

environmental geometry

ADPCM decompression

16-bit 44KHz, stereo wave data

with all features

MP3 decompression (requires Miles

license)

Support for audio streaming on any

wave

Real-time wave file stitching

Pre-authored Doppler effect

encoded waves

Pre-authored distance variant

encoded waves

Server browser - Displays all active

game servers and allows a player to

choose which one to participate on.

Players can filter and sort server

lists in order to speed up the display

and selection of a server.

Friends instant messenger - Allows

players to message each other both

in and out of the game as well as

join friends in existing games. No

more confusion about what server

your friends are on, you can easily

join with this feature.

VGUI - Valve's custom GUI

interface mimics most window

controls but is rendered using the

Source engine for both in-game and

out-of-game user interface

uniformity. It is platform

independent and is Unicode

compliant.

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