Universe Slapjack

A bunch of players connect to the server. (One player per window.) The screen is yellow for a random amount of time (say 1-10 seconds). When the screen turns green, the first window to hit a key gets a point. The others are locked out until the next time the screen turns green.

• Show points on screen.
• Any key hit in a window scores for that window.
• Only one point per green screen.
• No points can be earned when the screen is yellow.

Planning

• Model
• Message(s)
• What will happen when the message is received?

Images

The grey background and the line are not part of the animation; they just separate the active worlds.

Hints

• Show the time remaining until someone can score again. (The color gray is unobtrusive.)