JS SDK

javascript/demo.js

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+const sdk = require("./fh_sdk");
+
+const FAIRHOPPER_HOST = "http://127.0.0.1";
+const FAIRHOPPER_PORT = 8010;
+
+async function main() {
+    const fh = new sdk.FairHopper(FAIRHOPPER_HOST, FAIRHOPPER_PORT);
+    await fh.ping();
+
+    game = await fh.startGame("Mirko");
+    console.log("Board dimensions:", game.board);
+    console.log("Destination position:", game.destination.position);
+    console.log();
+
+    const playerUuid = game.player.uuid;
+
+    console.log("Current position is", game.player.position);
+
+    let moveResult;
+    try {
+        console.log("Trying to move right");
+        moveResult = await fh.move(playerUuid, "right");
+        console.log("Successfully moved to", moveResult.player.position);
+
+        console.log("Trying to move right");
+        moveResult = await fh.move(playerUuid, "right");
+        console.log("Successfully moved to", moveResult.player.position);
+
+        console.log("Trying to move right");
+        moveResult = await fh.move(playerUuid, "right");
+        console.log("Successfully moved to", moveResult.player.position);
+
+        console.log("Trying to move down");
+        moveResult = await fh.move(playerUuid, "down");
+        console.log("Successfully moved to", moveResult.player.position);
+    } catch (err) {
+        if (err instanceof sdk.PositionError) {
+            console.error("Cant't move in this direction");
+        }
+    }
+}
+
+main();

javascript/fh_sdk.js

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+class PlayerNotFoundError extends Error {
+    constructor(message) {
+        if (!message) {
+            message = "Player not found";
+        }
+        super(message);
+        this.name = "PlayerNotFoundError";
+    }
+}
+
+class PlayerInactiveError extends Error {
+    constructor(message) {
+        if (!message) {
+            message = "Player kicked out due to inactivity";
+        }
+        super(message);
+        this.name = "PlayerInactiveError";
+    }
+}
+
+class PositionError extends Error {
+    constructor(message) {
+        if (!message) {
+            message = "Position out of bounds or collision with an object";
+        }
+        super(message);
+        this.name = "PositionError";
+    }
+}
+
+class FairHopper {
+    constructor(host, port) {
+        this.host = host;
+        this.port = port;
+
+        this.defaultHeaders = {
+            Accept: "application/json",
+            "Content-Type": "application/json",
+        };
+    }
+
+    formatUrl(path) {
+        return `${this.host}:${this.port}${path}`;
+    }
+
+    async ping() {
+        const r = await fetch(this.formatUrl("/ping"), {
+            headers: this.defaultHeaders,
+        });
+        return await r.json();
+    }
+
+    async startGame(playerName) {
+        const payload = {
+            player_name: playerName,
+        };
+        const r = await fetch(this.formatUrl("/game"), {
+            method: "post",
+            headers: this.defaultHeaders,
+            body: JSON.stringify(payload),
+        });
+        return await r.json();
+    }
+
+    async getGameInfo() {
+        const r = await fetch(this.formatUrl("/game"), {
+            headers: this.defaultHeaders,
+        });
+        return await r.json();
+    }
+
+    async getPlayerInfo(playerUuid) {
+        const r = await fetch(this.formatUrl(`/player/${playerUuid}`), {
+            headers: this.defaultHeaders,
+        });
+        switch (r.status) {
+            case 403:
+                throw new PlayerInactiveError();
+            case 404:
+                throw new PlayerNotFoundError();
+        }
+        return await r.json();
+    }
+
+    async moveLeft(playerUuid) {
+        return await this.move(playerUuid, "left");
+    }
+
+    async moveRight(playerUuid) {
+        return await this.move(playerUuid, "right");
+    }
+
+    async moveUp(playerUuid) {
+        return await this.move(playerUuid, "up");
+    }
+
+    async moveDown(playerUuid) {
+        return await this.move(playerUuid, "down");
+    }
+
+    async move(playerUuid, direction) {
+        const url = this.formatUrl(`/player/${playerUuid}/move/${direction}`);
+        const r = await fetch(url, {
+            method: "post",
+            headers: this.defaultHeaders,
+        });
+        switch (r.status) {
+            case 403:
+                throw new PlayerInactiveError();
+            case 404:
+                throw new PlayerNotFoundError();
+            case 409:
+                throw new PositionError();
+        }
+        return await r.json();
+    }
+}
+
+module.exports = {
+    FairHopper,
+    PlayerNotFoundError,
+    PlayerInactiveError,
+    PositionError,
+};