galvanic corrosion rewrite

commit this before something goes horribly wrong

src/server/instances/Instance.ts

@@ -0,0 +1,39 @@
+import type Profile from "../profiles/profile.ts";
+import { RoomLocation } from "./base.ts";
+
+export class Instance {
+
+    #createdAt = new Date();
+
+    #players: Set<Profile> = new Set();
+
+    #instanceId: number;
+    #location: RoomLocation;
+
+    constructor(options: {
+        id: number,
+        location: RoomLocation,
+    }
+    ) {
+        this.#instanceId = options.id;
+        this.#location = options.location;
+    }
+
+    getPlayers() {
+        return this.#players.values().toArray();
+    }
+    playerIsHere(profile: Profile) {
+        return this.getPlayers().find(prof => prof.same(profile)) ? true : false;
+    }
+    removePlayer(profile: Profile) {
+        this.#players.delete(profile);
+    }
+    addPlayer(profile: Profile) {
+        this.#players.add(profile);
+    }
+
+    getCreatedAt() {
+        return this.#createdAt;
+    }
+
+}