The presentation covers all the aspects that a game developer should keep in mind: gathering a team, planning a timeline, considering graphics, physics and sound of a future game, and more. This presentation by Vladyslav Kurmaz (Software Engineer, GlobalLogic) was delivered at ITEM conference on June 6, 2015, in Dnipropetrovsk. Details: http://item.dp.ua/en

1. VIDEO GAMES
TECHNOLOGY
how it’s made
by Vladyslav Kurmaz
June 2015, December 2014

2. about speaker
 6 years – GAME DEVELOPMENT
 4 years – INDUSTRIAL 3D
video

3. about speaker
AN-148 avia-simulator
Paintball editor
pet project

4. my top 3 games

5. INCEPTION

6. what is game. why do we play it.
based on
• curiosity
• entertainment
• escape from reality

7. non-entertainment domains
Achitectural visualization
Avia simulators
Industrial 3D
Medicine
Gamification

8. team, roles
Game publisher
Game designer
2D artist
Art director
Lead programmer
Graphic programmer
3D Modeler
Animator
FX artist
Sound programmer
Physics programmer
AI programmer
Script programmer
Network programmer
Game testerSound maker

9. roadmap / workflow
We were an “Agile” before it became main stream

10. DEEP DIVE

11. high-level structure
input
render one frame
network sync (client) update
network sync (server)
Game is an infinity loop

12. high-level structure
Finite State Machine
Main
menu
Loading
Game
Settings
Create
server
Connect
Single-
player

13. timing (FPS – frames per second)
input sync
update
physics sound
broadcast render
logic/ai
one frame
t1 t2

14. game entity
pbe demo

15. GRAPHICS

16. Renders
 DirectX
 OpenGL
 HTML canvas/WebGL
 Platform specific rendering
 Everything is triangles
 and Textures
 and Lightning
 and Shaders

17. Render - viewport

18. Render - input data
 float position[3]
 float normal[3]
 unsigned int color
 float texel [2]
 …

19. render - pipeline

20. shaders
 GLSL, HLSL
 vertex shader
 pixel shader
 geometry shader
 tessellation shader
Microprogram which runs directly on GPU

21. lightning
 ambient
 point
 spot
 directional
 self-illuminated

22. FX
 particle system
 motion trail
 decal

23. animation - mesh/morph
 high accuracy
 very expensive
data storing

24. animation - skeletal
 good for body
animation
 requires less data
storage

25. animation - motion capture
AoAdemo

26. LODs & MipMaps

27. user interface
left,top
right,bottom

28. PHYSICS

29. Object :
shape
position
orientation
velocity
mass
friction
elasticity
…
scene, static & dynamic

30. collision detection & collision response
Complexity :
O(n^2)
O(n log(n))

31. cloth simulation

32. spatial partitioning
havok, newton, bullet, physx, etc.
demo

33. SOUND

34. sound (music, ambient, 3d)

35. Listener :
position
orientation
velocity
Sound :
position
velocity
sound scene
OpenAL, Squall, BASS, Fmod, etc.

36. • Chorus
• Compression
• Distortion
• Echo
• Environmental
Reverberation
• Flange
• Gargle
• Parametric Equalizer
• Waves Reverberation
sound FX

37. NETWORK

38. c1
c2
c3
server
server
server
c1 c2 c3
c1
c2
c3
input
input
input
 collect info from clients
 update
 send new positions
build-in, standalone server

39. INPUT

40. input devices

41. pressed
released
toggle
swipe
two-fingerscroll
taptozoom
etc.
• Control state
• Message queue
button, axis, gesture
immediate vs buffered

42. SCRIPTING

43. game logic
Lua, Python, JS, C#, Cint, etc.
engine
scripts
• setup/test game without engine rebuild
• reuse engine
APIsupdate

44. AI
Should be repeatability
No neural networks
KISS
Path finding
Sensors
video

45. OVERVIEW

46. game engines, cross-platform
development
• Unreal
• Unity
• Popcap game engine
• …
• Editor
• Presets
• Scripting
• Debug

47. NEXT STEPS

48. resources, hacker space
gamedev.net
gamasutra.com
gamedev.ru
dtf.ru
siggraph.org

49. THANK YOU
questions