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