Game Engine Protocol

Each tick consists of 4 steps:

1. request_commands()

# pseudocode for request_commands()
for t in tanks:
    if t.commands.is_empty():
        t.commands = t.request_commands()

2. apply_commands()

# pseudocode for apply_commands()
for t in tanks:
    system.apply_command(t.commands.pop())

3. apply_physics()

# pseudocode for apply_physics()
for t in tanks:
    t.events = system.check_collisions(t)

4. publish_events()

# pseudocode for publish_events()
for t in tanks:
    for e in t.events:
        t.commands.extend_front(t.request_commands_by_event(e))