From 72c6c7de12e9833f52bf2d0718d70f044f8ab57e Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <elizabeth.hunt@simponic.xyz>
Date: Thu, 20 Jul 2023 20:47:32 -0700
Subject: a bit of refactoring; importing engine into bun for server

---
 engine/entities/Entity.ts | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 engine/entities/Entity.ts

(limited to 'engine/entities/Entity.ts')

diff --git a/engine/entities/Entity.ts b/engine/entities/Entity.ts
new file mode 100644
index 0000000..e57ccde
--- /dev/null
+++ b/engine/entities/Entity.ts
@@ -0,0 +1,33 @@
+import type { Component } from "../components";
+import { ComponentNotFoundError } from "../exceptions";
+
+export abstract class Entity {
+  private static ID = 0;
+
+  public readonly id: number;
+  public readonly components: Map<string, Component>;
+
+  constructor() {
+    this.id = Entity.ID++;
+    this.components = new Map();
+  }
+
+  public addComponent(component: Component) {
+    this.components.set(component.name, component);
+  }
+
+  public getComponent<T extends Component>(name: string): T {
+    if (!this.hasComponent(name)) {
+      throw new Error("Entity does not have component " + name);
+    }
+    return this.components.get(name) as T;
+  }
+
+  public getComponents(): Component[] {
+    return Array.from(this.components.values());
+  }
+
+  public hasComponent(name: string): boolean {
+    return this.components.has(name);
+  }
+}
-- 
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