first commit! 🎉

common/log.js

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+export default class Log {
+    static info(message) {
+        console.log('[' + new Date().toISOString() + '] ' + message);
+    }
+
+    static warn(message) {
+        console.warn('[' + new Date().toISOString() + '] WARN: ' + message);
+    }
+
+    static error(message) {
+        console.error('[' + new Date().toISOString() + '] FATAL: ' + message);
+    }
+}

common/player.js

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+export default class Player {
+    static SPEED = 400.0;
+    static SIZE = 50.0;
+
+    constructor(name, x, y, colour) {
+        this.x = x;
+        this.y = y;
+        this.in_x = 0.0;
+        this.in_y = 0.0;
+        this.draw_x = x;
+        this.draw_y = y;
+        this.name = name;
+        this.colour = colour;
+    }
+
+    update(delta) {
+        if (this.in_x != 0) this.x += this.in_x * Player.SPEED * delta;
+        if (this.in_y != 0) this.y += this.in_y * Player.SPEED * delta;
+    }
+}

common/prop.js

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+import Player from "./player.js";
+import { WORLD_SIZE } from "./world.js";
+
+export default class Prop {
+    static SIZE = 50.0;
+
+    constructor(name, x, y, colour, sprite) {
+        this.x = x;
+        this.y = y;
+        this.xv = 0.0;
+        this.yv = 0.0;
+        this.draw_x = x;
+        this.draw_y = y;
+        this.name = name;
+        this.colour = colour;
+        this.sprite = sprite;
+    }
+
+    update(delta, players) {
+        players.forEach(player => {
+            if (this.x - Prop.SIZE / 2 < player.x + Player.SIZE / 2 &&
+                this.x + Prop.SIZE / 2 > player.x - Player.SIZE / 2 &&
+                this.y - Prop.SIZE / 2 < player.y + Player.SIZE / 2 &&
+                this.y + Prop.SIZE / 2 > player.y - Player.SIZE / 2) {
+                this.xv += player.in_x * Player.SPEED * delta * 20.0;
+                this.yv += player.in_y * Player.SPEED * delta * 20.0;
+            }
+        });
+
+        if (this.xv != 0) this.x += this.xv * delta;
+        if (this.yv != 0) this.y += this.yv * delta;
+
+        this.xv *= 0.95;
+        this.yv *= 0.95;
+
+        // bounce off walls
+        if (this.x + Prop.SIZE / 2 > WORLD_SIZE ||
+            this.x - Prop.SIZE / 2 < 0.0) {
+            this.x = Math.min(Math.max(this.x, 0.0), WORLD_SIZE);
+            this.xv *= -1;
+        }
+        if (this.y + Prop.SIZE / 2 > WORLD_SIZE ||
+            this.y - Prop.SIZE / 2 < 0.0) {
+            this.y = Math.min(Math.max(this.y, 0.0), WORLD_SIZE);
+            this.yv *= -1;
+        }
+    }
+}

common/world.js

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+export const WORLD_SIZE = 500;