1. Framework for Realtime Ad-hoc Games
FRAG
Framework for Realtime Ad-hoc Games

2. Tutorial outline Motivation FRAG based game worlds FRAG structure
Core FRAG components
13 Nov 2002
ARENA Tutorial - FRAG

3. Problem Distributed games Ad-hoc networking
True Peer-To-Peer (no dedicated servers)
13 Nov 2002
ARENA Tutorial - FRAG

4. Solution FRAG Object management Network communication
Distributed control
Load balancing
Game state replication
Peer management
13 Nov 2002
ARENA Tutorial - FRAG

5. Peer-to-Peer network Peer 2 Peer 1 Peer 3 No dedicated server!
13 Nov 2002
ARENA Tutorial - FRAG

6. World overview Object A Peer 2 Focus Peer 1 Focus Object C Object B
13 Nov 2002
ARENA Tutorial - FRAG

7. State replication Peer 1 Object A Object A Peer 2 Object A Object B
Object C
Object C
Object C
13 Nov 2002
ARENA Tutorial - FRAG

8. FRAG structure Peer Game Manager Manager Remote Peer 2 Peer 1 Object
Connection
Peer 2
Local
Event
Dispatcher
Remote
Object
Manager
Object B
Object A
13 Nov 2002
ARENA Tutorial - FRAG

9. Game Manager Handles game creation and joining
Initializes the game world
Transmits initial world copies to joining peers
Serves as interface between FRAG and the underlying network/ARENA layer (peer discovery and connection)
13 Nov 2002
ARENA Tutorial - FRAG

10. Object Manager Maintains objects hashtable and object states
Handles incoming state updates
Generates state updates for controlled objects
Chooses which objects to control
Resolves controller conflicts between peers
Provides object lists for the visualization components
13 Nov 2002
ARENA Tutorial - FRAG

11. Information Sources
FRAG source code (still undocumented) in the ARENA CVS repository, module frag Me
13 Nov 2002
ARENA Tutorial - FRAG