Chapter 2: One on one (101)

1. Chapter 2: One on one (101)

2. BOIDS

3. Three Forces Acting on a Boid Cohesion Alignment Separation

4. V’i Vi A P’i Pi One Time Step of a Boid At time t+t At time t

5. Simulation 1010100 1111001 0010101 0111101 1001...... Renderer Data Model Software Client

6. DISTRIBUTED BOIDS: CONCEPTS

7. Data-Push Client A Client B

8. Data-Sharing Client A Client B

9. Data-Coupled Client A Client B

10. DISTRIBUTED BOIDS: IMPLEMENTATION

11. Simulation 1010100 1111001 0010101 0111101 1001...... 1010100 1111001 0010101 0111101 1001...... Renderer Data Model Network Router Router Software Software Router Router Modem Modem Client Client

12. Boids Implementation Screen (Renderer Output) Data model Simulation Local Flock Router Remote Flock Network Router Internet Router Router

13. Create socket local port X _socket = DatagramSocket(); Create socket local port X _socket = DatagramSocket(); Create Datagram Packet to receive and send _packet = DatagramPacket(); Create Datagram Packet to receive and send _packet = DatagramPacket(); Read packet _packet = _socket.read() Write packet to remote address and port _socket .write(_packet) Write packet to remote address and port _socket .write(_packet) Read packet _packet = _socket.read() Close _socket Close _socket

14. Wait for incoming connection requests _connectionSocket = _listenSocket.accept(); Connect to remote address and port _clientSocket = _Socket(); Create socket to listen to requests on local port X _listenSocket = ServerSocket(); Setup streams _connectionSocket Setup streams _connectionSocket Read messages on _connectionSocket Write messages on _clientSocket Write messages on _connectionSocket Read messages on _clientSocket Close _connectionSocket Close _clientSocket

15. REFLECTION

16. X X Boidi Boidi t wall clock time t+tNetwork wall clock time ClientA ClientB

17. X X Boidj Boidi Boidi Boidi t t+tNetwork wall clock time wall clock time t t+tNetwork ClientA ClientB

18. X Boidj Boidi t wall clock time tNetwork ClientA X Boidj Boidi t wall clock time tNetwork ClientB

19. ClientA ClientB ClientA ClientB b) At time t+tNetwork a) At time t ClientA ClientB c) At time t+2.tNetwork