12 KiB
12 KiB
Infection
~avatar avatar
There is a disease outbreak! Will you find patient zero?!?
~
Infection is a distributed game which simulates the propagation of an illness. The goal is to stop the outbreak before every player dies!
- Number of players: 1 Master, 4 or more players. Each Master and players need a @boardname@ with battery pack.
In this game, a master @boardname@ infects a "patient zero" player with the sickness. The infected player will be contagious immediately but won't show any sign during the incubation time. The sickness gets transmitted when two @boardname@ get close to each other. After the incubation period, the sad face will appear on the screen. After the sickness period, the player will eventually die and a skull will display on the screen. Dead players are out of the game.
If any player survives the outbreak, the game is won. Otherwise try again!
~ hint
Infection is an engaging game that will get your students running around. We recommend playing it outside to give more space for the students.
~
How to play
Press A+B to enter master mode (1 per game).
Wait for players to be paired. The number of paired player will display on screen. A letter will appear on the player's screen, this letter is the player's identity.
Once all your players are registered, press A+B to start the infection game.
The game will pick a random player as patient zero.
A player will transmit the disease if close enough (RSSI) and with a certain probability (TRANSMISSIONPROB).
During the incudation phase (INCUBATION), the player does not show any sign of illness (happy face).
After that phase, the player gets sick and shows a sad face on the screen. After the sick face, the player dies and a skull shows up.
Once the game is over, the @boardname@ will show the player id (A,B,C...), health and who infected him. The master @boardname@ will show the identity of patient zero.
Icons used in the game:
- Pairing: IconNames.Ghost
- Paired: IconNames.Happy
- Dead: IconNames.Skull
- Sick: IconNames.Sad
- Incubating: IconNames.Confused
- Healthy: IconNames.Happy
https://pxt.microbit.org/_gymCJCWPbiDu
JavaScript code
/**
* Infection game
*
* Flash all micro:bit will this script
*
* Press A+B to enter master mode (1 per game)
*
* Wait for players to be paired. The number of paired player will display on screen.
* An icon will appear on player's screen.
*
* Press A+B to start the infection game. The master will pick a random
* player as patient zero.
*
* A player will transmit the disease if close enough (RSSI)
* and with a certain probability (TRANSMISSIONPROB).
* During the incudation phase (INCUBATION), the player does not show any sign
* of illness. After that phase, the sad face shows up.
*
* The game will automatically stop once all players are dead or healthy. The master can
* also press A+B again to stop the game.
*
* Once the game is over, the micro:bit will show the player id (A,B,C...), health and
* who infected him.
*
* Icons used in the game:
*
* Pairing: IconNames.Ghost
* Paired: IconNames.Happy
* Dead: IconNames.Skull
* Sick: IconNames.Sad
* Incubating: IconNames.Confused
* Healthy: IconNames.Happy
*
*/
const INCUBATION = 20000; // time before showing symptoms
const DEATH = 40000; // time before dying off the disease
const RSSI = -45; // db
const TRANSMISSIONPROB = 40; // % probability to transfer disease
enum GameState {
Stopped,
Pairing,
Running,
Over
}
enum HealthState {
Healthy,
Incubating,
Sick,
Dead
}
const GameIcons = {
Pairing: IconNames.Ghost,
Paired: IconNames.Happy,
Dead: IconNames.Skull,
Sick: IconNames.Sad,
Incubating: IconNames.Confused,
Healthy: IconNames.Happy
}
const playerIcons = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
class Player {
id: number;
icon: number;
health: HealthState;
show() {
basic.showString(playerIcons[this.icon]);
}
}
// common state
let state = GameState.Stopped;
// master state
let master = false;
let patientZero: Player;
const players: Player[] = [];
// player state
let paired = false;
let infectedBy = -1; // who infected (playerIcon)
let infectedTime = 0; // local time when infection happened
let playerIcon = -1; // player icon and identity
let health = HealthState.Healthy;
// get a player instance (creates one as needed)
function player(id: number): Player {
for (const p of players)
if (p.id == id) return p;
// add player to game
let p = new Player();
p.id = id;
p.icon = (players.length + 1) % playerIcons.length;
p.health = HealthState.Healthy;
players.push(p);
serial.writeLine(`player ==> ${p.id}`)
return p;
}
function allDead(): boolean {
for (const p of players)
if (p.health != HealthState.Dead) return false;
return true;
}
function gameOver() {
state = GameState.Over;
if (patientZero)
patientZero.show();
}
function gameFace() {
switch (state) {
case GameState.Stopped:
basic.showIcon(GameIcons.Pairing);
break;
case GameState.Pairing:
if (playerIcon > -1)
basic.showString(playerIcons[playerIcon]);
else
basic.showIcon(paired ? GameIcons.Paired : GameIcons.Pairing, 1);
break;
case GameState.Running:
switch (health) {
case HealthState.Dead:
basic.showIcon(GameIcons.Dead, 1);
break;
case HealthState.Sick:
basic.showIcon(GameIcons.Sick, 1);
break;
default:
basic.showIcon(GameIcons.Healthy, 1);
break;
}
break;
case GameState.Over:
// show id
basic.showString(playerIcons[playerIcon]);
basic.pause(2000);
// show health
switch (health) {
case HealthState.Dead:
basic.showIcon(GameIcons.Dead, 2000);
break;
case HealthState.Sick:
basic.showIcon(GameIcons.Sick, 2000);
break;
case HealthState.Incubating:
basic.showIcon(GameIcons.Incubating, 2000);
break;
default:
basic.showIcon(GameIcons.Healthy, 2000);
break;
}
// show how infected
if (infectedBy > -1) {
basic.showString(" INFECTED BY");
basic.showString(playerIcons[infectedBy]);
basic.pause(2000);
} else {
basic.showString(" PATIENT ZERO");
basic.pause(2000);
}
// show score
game.showScore();
basic.pause(1000);
break;
}
}
// master button controller
input.onButtonPressed(Button.AB, () => {
// register as master
if (state == GameState.Stopped && !master) {
master = true;
paired = true;
state = GameState.Pairing;
serial.writeLine("registered as master");
radio.setTransmitPower(7); // beef up master signal
basic.showString("0");
return;
}
if (!master) return; // master only beyond this
// launch game
if (state == GameState.Pairing) {
// pick 1 player and infect him
patientZero = players[Math.random(players.length)];
while (patientZero.health == HealthState.Healthy) {
radio.sendValue("infect", patientZero.id);
basic.pause(100);
}
// all ready
state = GameState.Running;
serial.writeLine(`game started ${players.length} players`);
// show startup
basic.showIcon(GameIcons.Dead);
} // end game
else if (state == GameState.Running) {
gameOver();
}
})
radio.setGroup(42);
radio.setTransmitSerialNumber(true)
radio.onDataPacketReceived(({ time, receivedNumber, receivedString, signal, serial: id }) => {
if (master) {
if (receivedString == "pair") {
// register player
let n = players.length;
let p = player(id);
// show player number if changed
if (n != players.length) {
led.stopAnimation();
basic.showNumber(players.length);
}
}
else if (receivedString == "health") {
let p = player(id);
p.health = receivedNumber;
// check if all infected
if (allDead())
gameOver();
}
} else {
if (receivedString == "state") {
// update game state
state = receivedNumber as GameState;
} else if (infectedBy < 0 &&
receivedString == "infect"
&& receivedNumber == control.deviceSerialNumber()) {
// infected by master
infectedBy = 0; // infected my master
infectedTime = input.runningTime();
health = HealthState.Incubating;
serial.writeLine(`infected ${control.deviceSerialNumber()}`);
}
if (receivedString == "h" + control.deviceSerialNumber().toString() &&
health < receivedNumber) {
health = receivedNumber;
}
switch (state) {
case GameState.Pairing:
// medium range in pairing mode
if (!paired &&
receivedString == "paired"
&& receivedNumber == control.deviceSerialNumber()) {
// paired!
serial.writeLine(`player paired ==> ${control.deviceSerialNumber()}`)
paired = true;
return;
}
else if (paired && receivedString == "i" + control.deviceSerialNumber().toString()) {
playerIcon = receivedNumber;
}
break;
case GameState.Running:
// broadcast infection status
if (health == HealthState.Healthy && receivedString == "transmit") {
serial.writeLine(`signal: ${signal}`);
if (signal > RSSI &&
Math.random(100) > TRANSMISSIONPROB) {
infectedBy = receivedNumber;
infectedTime = input.runningTime();
health = HealthState.Incubating;
}
} else if (health != HealthState.Dead
&& receivedString == "health" && signal > RSSI) {
game.addScore(1);
}
break;
}
}
})
// main game loop
basic.forever(() => {
if (master) {
switch (state) {
case GameState.Pairing:
// tell each player they are registered
for (const p of players) {
radio.sendValue("paired", p.id);
radio.sendValue("i" + p.id, p.icon);
}
serial.writeLine(`pairing ${players.length} players`);
basic.pause(500);
break;
case GameState.Running:
for (const p of players) {
radio.sendValue("h" + p.id, p.health);
}
break;
case GameState.Over:
if (patientZero)
patientZero.show();
break;
}
radio.sendValue("state", state); // keep broadcasting the game state
} else { // player loop
switch (state) {
case GameState.Pairing:
// broadcast player id
if (playerIcon < 0)
radio.sendValue("pair", control.deviceSerialNumber());
else if (infectedBy > -1)
radio.sendValue("health", health);
break;
case GameState.Running:
// update health status
if (health != HealthState.Healthy && input.runningTime() - infectedTime > DEATH)
health = HealthState.Dead;
else if (health != HealthState.Healthy && input.runningTime() - infectedTime > INCUBATION)
health = HealthState.Sick;
// transmit disease
if (health == HealthState.Incubating || health == HealthState.Sick)
radio.sendValue("transmit", playerIcon);
radio.sendValue("health", health);
break;
}
// show current animation
gameFace();
}
})
basic.showIcon(GameIcons.Pairing)